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Journal articles on the topic 'Support pillar'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Collins, RE, and AC Fischer-Cripps. "Design of Support Pillar Arrays in Flat Evacuated Windows." Australian Journal of Physics 44, no. 5 (1991): 545. http://dx.doi.org/10.1071/ph910545.

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Flat evacuated glazing consists of two plane sheets of glass separated by a narrow evacuated space. These structures must incorporate an array of support pillars in order to maintain the separation of the glass plates under the influence of atmospheric pressure forces. A design procedure is outlined for determining the dimensions of this pillar array. Two important constraints in the design process are the mechanical tensile stress on the outside of the glass plates near the pillar, and the thermal conductance through the array of support pillars. A third constraint arises because of stress co

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2

Esterhuyse, J. C., and D. F. Malan. "Simulating pillar reinforcement using a displacement discontinuity boundary element code." Journal of the Southern African Institute of Mining and Metallurgy 123, no. 5 (2023): 211–21. http://dx.doi.org/10.17159/2411-9717/2450/2023.

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In this study we explore the use of a novel numerical modelling approach to study the effect of pillar reinforcement on pillar stability. Case studies in the literature indicate that tendons, strapping of the pillars, and shotcrete or thin spray-on liners are commonly used to reinforce pillars. No clear methodology exists to select the type of support or to design the capacity of the support required, however. This has led to ongoing collapses in some mines in spite of heavy support being used to reinforce unstable pillars. A limit equilibrium model with confinement on the edge of the pillar w

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3

Yan, Baoxu, Hanwen Jia, Yuliang Liu, Penghao Liu, and Erol Yilmaz. "Revealing Cooperative Load-Bearing Mechanisms Between Mine Backfill and Rock Pillar Using a Bonded-Block Modeling Approach." Minerals 15, no. 3 (2025): 210. https://doi.org/10.3390/min15030210.

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This study investigates how mine backfill interacts with pillars to enhance load-bearing mechanisms in underground mining using the bonded-block modeling method. Through systematic numerical simulations of single- and three-pillar systems, we evaluate critical design parameters—backfill ratio, backfill’s cohesion, lateral confinement pressure, and pillar height-to-width ratio—to quantify their effects on cooperative load-bearing behavior. Key findings reveal that backfill provides essential horizontal passive support to pillars, with this stabilizing effect amplifying as the pillars fragment o

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4

Shan, Changhao, Shenggen Cao, Zeyu Zhang, Kewen Lin, and Jialong Sun. "Numerical Investigation on the Yield Pillar Bearing Capacity under the Two-End-Type Cable Reinforcement." Energies 16, no. 18 (2023): 6418. http://dx.doi.org/10.3390/en16186418.

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For underground coal mining techniques such as gob-side entry retaining (GER) or gob-side entry driving (GED), the stability of yield pillars is paramount. A well-designed yield pillar aims to withstand mining-induced stresses. This study delves into the impact of bi-terminal cable support on the stability of such pillars. Utilizing 30 distinct numerical models, each with varying pillar width/height (w/h) ratios and diverse cable support methodologies, our findings suggest an upward trend in both peak and residual strength in response to heightened support strength. Notably, pillars with a wid

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5

Pinckney, Jonathan, and Claire Trilling. "BREAKING DOWN PILLARS OF SUPPORT FOR DEMOCRATIC BACKSLIDING." Mobilization: An International Quarterly 30, no. 2 (2025): 171–88. https://doi.org/10.17813/1086-671x-30-2-171.

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Can civil resistance counter democratic backsliding? Civil resistance campaigns are most effective when they shift the loyalty of regimes’ “pillars of support.” Yet we know little about how loyalty shifts occur or the tactics that erstwhile pillars employ post-loyalty shift. And the literature has focused on civil resistance against autocracies rather than democratic backsliding. To fill these gaps, we collect and analyze data on actions by resistance campaigns and four key pillars of support in a random sample of democratic backsliding periods. We find that civil resistance is associated with

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6

Li, Ning, Masoud Zare, Congke Yi, and Rafael Jimenez. "Stability Risk Assessment of Underground Rock Pillars Using Logistic Model Trees." International Journal of Environmental Research and Public Health 19, no. 4 (2022): 2136. http://dx.doi.org/10.3390/ijerph19042136.

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Pillars are important structural elements that provide temporary or permanent support in underground spaces. Unstable pillars can result in rock sloughing leading to roof collapse, and they can also cause rock burst. Hence, the prediction of underground pillar stability is important. This paper presents a novel application of Logistic Model Trees (LMT) to predict underground pillar stability. Seven parameters—pillar width, pillar height, ratio of pillar width to height, uniaxial compressive strength of rock, average pillar stress, underground depth, and Bord width—are employed to construct LMT

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7

Le Quang, Phuc, Vladimir Zubov, and Thang Pham Duc. "Design a Reasonable Width of Coal Pillar Using a Numerical Model. A case study of Khe Cham basin, Vietnam." E3S Web of Conferences 174 (2020): 01043. http://dx.doi.org/10.1051/e3sconf/202017401043.

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Problems in surrounding rock displacement, roadway deformation and complex support are the hallmarks of the long wall mining system. Such problems seriously affect the safety and efficient production of coal mines. To control the deformation of the rocks around the roadway next to the goaf, to reduce the support pressure, in Vietnamese underground mines often leave supporting coal pillars. Identification of a reasonable design for roadway supporting pillars by a numerical simulation study was conducted under the geological and technical foundation of I-10- 2 working faces at the Khe Cham coal

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8

Huang, Wanpeng, Shilei Liu, Mingtao Gao, et al. "Improvement of Reinforcement Performance and Engineering Application of Small Coal Pillars Arranged in Double Roadways." Sustainability 15, no. 1 (2022): 292. http://dx.doi.org/10.3390/su15010292.

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The supporting technology of retaining small coal pillars in a double roadway layout can effectively relieve the tension of mining and excavation replacement and improve the coal recovery rate. The critical difficulty is that the supporting structure on both sides of the small coal pillar has not established an effective mechanical connection, and the improvement of the bearing capacity of the coal pillar is limited, so it is difficult to achieve long-term stability control of the small coal pillar. Taking the 301 and 302 working faces of Gaojiapu Coal Mine as the engineering background, this

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9

Krukovskyi, Oleksandr, Yurii Bulich, Serhii Kurnosov, Oleksii Yanzhula, and Vladimir Demin. "Substantiating the parameters for selecting a pillar width to protect permanent mine workings at great depths." IOP Conference Series: Earth and Environmental Science 970, no. 1 (2022): 012049. http://dx.doi.org/10.1088/1755-1315/970/1/012049.

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Abstract Application of a method to protect permanent mine workings by large pillars requires thorough analysis of geomechanical processes aimed at providing stability for a mine working during its long-term operation. The purpose of the paper is to study the processes of coal rock mass deformation to substantiate the selection of the protective pillar width. The examples to be considered are represented by mining-geological conditions of a central panel of PJSC Colliery Group “Pokrovske” where four permanent mine workings are planned to be driven. To substantiate the width of protective pilla

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10

Orenstein, Evan W., Naveen Muthu, Asli O. Weitkamp, et al. "Towards a Maturity Model for Clinical Decision Support Operations." Applied Clinical Informatics 10, no. 05 (2019): 810–19. http://dx.doi.org/10.1055/s-0039-1697905.

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AbstractClinical decision support (CDS) systems delivered through the electronic health record are an important element of quality and safety initiatives within a health care system. However, managing a large CDS knowledge base can be an overwhelming task for informatics teams. Additionally, it can be difficult for these informatics teams to communicate their goals with external operational stakeholders and define concrete steps for improvement. We aimed to develop a maturity model that describes a roadmap toward organizational functions and processes that help health care systems use CDS more

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11

Chen, Yunsheng, Jian Sun, Di Pang, and Ruofei Zhang. "Deformation and Failure Law of Roadway along Goaf and Reserve Width of Section Coal Pillar." Geofluids 2022 (July 7, 2022): 1–15. http://dx.doi.org/10.1155/2022/9947113.

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It was a non-negligible problem in the reserve of section coal pillar in coal mining. Reasonable section coal pillar width and support parameters can not only ensure the stability of surrounding rock of roadway but also produce more coal resources and save support cost. In this paper, the mining of 9106 workface of Linfen Tianyu Hengsheng Coal Industry of Wanbei Coal Power Group was taken as the research engineering background. FLAC3D numerical simulation software was used to simulate and analyze the laws of deformation failure of 6 m, 7 m, 8 m, 9 m, and 10 m coal pillars and surrounding rock

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12

Tian, Jinzhou, Hongpu Kang, Dongsheng Zhang, Gangwei Fan, and Xiaodong Zheng. "Study of the Constraint Pillar Test and the Application in Gob-Side Entry Retaining." Applied Sciences 14, no. 19 (2024): 8673. http://dx.doi.org/10.3390/app14198673.

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Firmly, the bearing capacity test of 1:1 equal ratio pillar under different constraint forms and different filling medium conditions was carried out. The results show that the binding pillar-forming effect is relatively good. The constraint ability of unconstrained, metal mesh, polyester mesh, hooked iron flat-hoop bushing, bellows, and spiral iron pipe is enhanced, in turn, and the carrying capacity is improved successfully. The homogeneity of high-water materials is better than concrete, and they have better compressibility, but their carrying capacity is relatively weak. The carrying capaci

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13

He, Yanpeng, Qingxiang Huang, Yehao Wei, and Junwu Du. "Research on Roof Load Transfer by Passing Coal Pillar of Working Face in Shallow Buried Closely Multiple-Seam." Minerals 13, no. 1 (2023): 118. http://dx.doi.org/10.3390/min13010118.

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The dynamic load effect of supports is mainly caused by the movement of the roof structure and the load transfer of overburden. In view of the practice issue that the phenomenon of strong ground pressure is easy to happen, when the working face of the lower coal seam passes the inclined coal pillar in shallow buried closely multiple-seam, it will lead to supprot damaged. This paper takes the mining of over-inclined coal pillars in the 22410 working face of the Bulianta Coal Mine as the background, based on the research method combining the field measurement, physical simulation experiment, and

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14

Xie, Xuebin, and Huaxi Zhang. "Research on Hard Rock Pillar Stability Prediction Based on SABO-LSSVM Model." Applied Sciences 14, no. 17 (2024): 7733. http://dx.doi.org/10.3390/app14177733.

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The increase in mining depth necessitates higher strength requirements for hard rock pillars, making mine pillar stability analysis crucial for pillar design and underground safety operations. To enhance the accuracy of predicting the stability state of mine pillars, a prediction model based on the subtraction-average-based optimizer (SABO) for hyperparameter optimization of the least-squares support vector machine (LSSVM) is proposed. First, by analyzing the redundancy of features in the mine pillar dataset and conducting feature selection, five parameter combinations were constructed to exam

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15

Liu, Peng Liang. "Stowing and Mining Interval Width and Stowing Body Strength Index in Tool Pillar Stowing Faces." Advanced Materials Research 962-965 (June 2014): 1189–94. http://dx.doi.org/10.4028/www.scientific.net/amr.962-965.1189.

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This paper put forward the technical ideas of tool pillar mining with stowing that is dividing mining and stowing into two stages and recycling pillars based on the first stage stowing body support roof by analyzing tool pillar faces characteristic with pillar and goaf septal arrangement. Due to the stope drift and pillar size are both small, the goaf should be timely stowing in order to ensure stability of pillars and stowing body, author introduced stowing and mining interval width and stowing body strength determined method in two stages. This paper calculated pillar load of the first stage

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16

Cano Nunez, Alcides Eloy, Carlos Enrique Arroyo Ortiz, and José Margarida da Silva. "Effect of Dynamic Stress Produced by Rock Blasting on the Optimal Dimensioning of Room and Pillars in Horizontal Layers." Advances in Materials Science and Engineering 2022 (July 31, 2022): 1–13. http://dx.doi.org/10.1155/2022/7826557.

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An optimal dimensioning of the room and pillars of the square or rectangular section is finding adequate transversal section support for the pillar; in that sense, all forces acting on the pillar must be evaluated. The pillar has its ends subjected to normal (σ) and shear stresses (τ). In addition, the pillar can also be subjected to dynamic stresses from the seismic waves generated by rock blasting. Thus, when calculating the dimensions of a mine pillar, the stresses imposed by seismic waves must be considered. The combination of lithostatic and dynamic stresses generated by blasting can affe

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17

Chang, Qingliang, Shiguo Ge, Xianyuan Shi, et al. "Determination of Narrow Coal Pillar Width and Roadway Surrounding Rock Support Technology in Gob Driving Roadway." Sustainability 14, no. 8 (2022): 4848. http://dx.doi.org/10.3390/su14084848.

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In order to determine the rational width of coal pillars and study the surrounding rock control technology of gob side entry driving with a narrow coal pillar, this paper first calculates the width of narrow coal pillar according to limit equilibrium theory; after that, the lateral support pressure and plastic zone development of the goaf is analyzed by numerical simulation to determine the rational width of reserved coal pillar; finally, through the ring breaking deformation regulation of surrounding rock of the gob side entry, the deformation and failure characteristics of the gob-side roadw

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18

Feng, Fan, Jiqing Zhang, Zhikai Yan, et al. "Safe and Efficient Recovery Technique of Horizontal Isolated Pillar under Loose Tailings Backfill; A Case Study in a Zinc-Lead Mine." Minerals 12, no. 9 (2022): 1066. http://dx.doi.org/10.3390/min12091066.

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The presence of loose medium backfill above the horizontal pillar will technically hinder the efficient recovery of the pillar since the improper design and preserved roof protection layer height will potentially lead to casualties and equipment damage caused by large area collapse of filled tailings as well as roof fall accidents. In this study, a safe and efficient technique for the recovery of isolated pillars under loose tailings backfill was carried out via field investigation, theoretical analysis, numerical simulation, and analytic hierarchy process using the isolated pillars in the 855

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19

Xu, Qingyun, Jian-Biao Bai, Shuai Yan, Rui Wang, and Shaoxu Wu. "Numerical Study on Soft Coal Pillar Stability in an Island Longwall Panel." Advances in Civil Engineering 2021 (January 29, 2021): 1–13. http://dx.doi.org/10.1155/2021/8831778.

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Roadway support and management of longwall panels in an island soft coal panel are always difficult work. In a test mine, stress distribution, deformation characteristic, and plastic zone distribution around the roadway and coal pillars in the development and mining periods were investigated with respect to the widths of different coal pillars using theoretical and simulation methods. The most reasonable width of coal pillars was comprehensively determined, and the field test was conducted successfully. The results show that a reasonable width of coal pillars is 7.0–8.2 m using the analytical

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20

Ma, Lu, Luyi Xing, Chang Liu, et al. "Research on the Instability Mechanism and Control Technology of Gob-Side Entry in Deep Mines with Soft Rock." Buildings 15, no. 1 (2024): 19. https://doi.org/10.3390/buildings15010019.

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The gob-side entry driving in deep mines with soft rock exhibits a complex deformation and instability mechanism. This complexity leads to challenges in roadway stability control which greatly affects the coal mine production succession and safe and efficient mining. This paper takes the gob-side entry in Liuzhuang Coal Mine as the background. By adopting the method of theoretical analysis, a dynamic model of the roof subsidence in the goaf is established. The calculation indicates that achieving the stable subsidence of the basic roof and the equilibrium of the lateral abutment stress within

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21

Ngwenyama, P. L., and WW de Graaf. "Risks and challenges affecting opencast pillar mining in previously mined underground bord and pillar workings." Journal of the Southern African Institute of Mining and Metallurgy 121, no. 12 (2021): 1–9. http://dx.doi.org/10.17159/2411-9717/1675/2021.

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South Africa is one of the leading producers and exporters of coal globally. A significant amount of the country's production is obtained from previously mined underground bord and pillar workings. This coal is in the form of pillars and remnants on the roof and floor of the old workings. The good quality coal pillars were left behind as primary support during underground bord and pillar mining operations. Due to the depletion of virgin coal reserves, the pillars and remnant coal are now removed using opencast mining rather than underground methods. However, the secondary extraction of pillars

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22

He, Fulian, Wenli Zhai, Jiayu Song, Xuhui Xu, Deqiu Wang, and Yanhao Wu. "Reasonable Coal Pillar Width and Surrounding Rock Control of Gob-Side Entry Driving in Inclined Short-Distance Coal Seams." Applied Sciences 13, no. 11 (2023): 6578. http://dx.doi.org/10.3390/app13116578.

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During gob-side entry driving under complex conditions in inclined short-distance coal seams, the roadway loses stability and deforms seriously, which affects the safety and efficiency of mine production. In this study, a reasonable coal pillar width was explored by means of on-site investigation, theoretical analysis, numerical simulation, and engineering tests. The following research results were obtained: (1) In selecting a reasonable coal pillar width, the influences of the position of residual coal pillars, stratum spacing, main roof breakage, roadway section in the upper coal seam should

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23

Sun, Lijun, Yicheng Ye, Binyu Luo, Nanyan Hu, and Pengcheng Li. "Theoretical Analysis for Stability Evaluation of Rock Mass Engineering Structure under Combined Compression-Shear Loading: A Case Study of Inclined Pillar." Applied Sciences 11, no. 23 (2021): 11439. http://dx.doi.org/10.3390/app112311439.

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An inclined pillar is a typical support structure under compression and shear loads for underground mining. The shear load caused by the inclination of the ore-body affects the bearing capacity of the pillar. At present, there is no systematic investigation on the influence of shear load on the stress state evolution and bearing capacity of the inclined pillar. Additionally, there is still a lack of effective evaluation of the bearing capacity of the inclined pillar in the presence of additional shear load. In this research, the theoretical analysis method is used to solve these problems. Firs

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24

Jiang, Zaisheng, Wenke Guo, and Shengrong Xie. "Coal Pillar Size Determination and Surrounding Rock Control for Gob-Side Entry Driving in Deep Soft Coal Seams." Processes 11, no. 8 (2023): 2331. http://dx.doi.org/10.3390/pr11082331.

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In response to the large-scale instability failure problem of designing coal pillars and support systems for gob-side entry driving (GSED) in high-stress soft coal seams in deep mines, the main difficulties in the surrounding rock control of GSED were analyzed. The relationship between the position of the main roof breaking line, together with the width of the limit equilibrium zone and a reasonable size for the coal pillar, were quantified through theoretical calculations. The theoretical calculations showed that the maximum and minimum widths of the coal pillar are 8.40 m and 5.47 m, respect

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25

Xu, Huawei, Derek B. Apel, Jun Wang, Chong Wei, and Krzysztof Skrzypkowski. "Investigation and Stability Assessment of Three Sill Pillar Recovery Schemes in a Hard Rock Mine." Energies 15, no. 10 (2022): 3797. http://dx.doi.org/10.3390/en15103797.

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In Canada, many mines have adopted the sublevel stoping method, such a blasthole stoping (BHS), to extract steeply deposited minerals. Sill pillars are usually kept in place in this mining method to support the weight of the overburden in underground mining. To prolong the mine’s life, sill pillars will be recovered, and sill pillar recovery could cause failures, fatality, and equipment loss in the stopes. In this paper, three sill pillar recovery schemes—SBS, SS1, and SS2—were proposed and conducted to assess the feasibility of recovering two sill pillars in a hard rock mine by developing a f

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26

Hertono, Gatot Fatwanto, Ridho Kresna Wattimena, Gabriella Aileen Mendrofa, and Bevina Desjwiandra Handari. "Classifying Coal Mine Pillar Stability Areas with Multiclass SVM on Ensemble Learning Models." Journal of Engineering and Technological Sciences 56, no. 1 (2024): 95–109. http://dx.doi.org/10.5614/j.eng.technol.sci.2024.56.1.8.

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Pillars are key structural components in coal mining. The safety requirements of underground coal mines are non-negotiable. Accurately classifying the areas of pillar stability helps ensure safety in coal mines. This study aimed to classify new pillar stability categories and their stability areas. The multiclass support vector machine (SVM) method was implemented with two types of kernel functions (polynomial and radial basis function (RBF) kernels) on pillar stability data with four new categories: failed or intact, either with or without an appropriate safety factor. This classification use

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27

Xue, Chengchun, Anye Cao, Wenhao Guo, Songwei Wang, Yaoqi Liu, and Zhiping Shen. "Mechanism of Coal Burst and Prevention Practice in Deep Asymmetric Isolated Coal Pillar: A Case Study from YaoQiao Coal Mine." Shock and Vibration 2021 (December 29, 2021): 1–19. http://dx.doi.org/10.1155/2021/3751146.

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Coal pillar bursts continue to be a severe dynamic hazard. Understanding its mechanism is of paramount importance and crucial in preventing and controlling its occurrence. The extreme roadway deformations from the asymmetric isolated coal pillars in the central mining district of YaoQiao Coal Mine have responded with frequent intense tremors, with risky isolated coal pillar bursts. The theoretical analysis, numerical simulation, and field measurements were done to research the impact of spatial overburden structure and stress distribution characteristics on the isolated coal pillar area, aimin

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28

Collins, RE, L. Poladian, BA Pailthorpe, and RC McPhedran. "Heat Conduction through Support Pillars in Evacuated Windows." Australian Journal of Physics 44, no. 1 (1991): 73. http://dx.doi.org/10.1071/ph910073.

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A study has been made of the rate of heat transport through a short pillar connecting two separated plates. Three separate approaches to the problem are discussed-analytic, numerical and experimental. The results of the different methods are in good agreement, and confirm the classical result for heat flow through a short, circular contact between semi-infinite bodies. These results are of particular relevance to the design of flat evacuated glazings incorporating short support pillars.

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Yang, Shang, Xuehui Li, Jun Wang, Shuhao Yang, Zhen Shen, and Guangzheng Xu. "Study on Pressure Relief Technology of High-Pressure Water Jet of Residual Coal Pillar in Overlying Goaf in Close Seam Mining." Shock and Vibration 2022 (January 13, 2022): 1–19. http://dx.doi.org/10.1155/2022/7842921.

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To solve the problem of strong ground pressure behaviour under a residual coal pillar in the overlying goaf of a close-distance coal seam, this paper proposes the technology of weakening and relieving the residual coal pillar in the overlying goaf by a high-pressure water jet. Based on the geological occurrence of the No. 3 coal seam and mountain No. 4 coal seam in the Yanzishan coal mine, the high-pressure water jet pressure relief technology of residual coal pillars in the overlying goaf of close-distance coal seams was studied by theoretical analysis and field industrial tests. First, the e

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30

Ngoy, Nsenga, Ishata Nannie Conteh, Boniface Oyugi, et al. "Coordination and Management of COVID-19 in Africa through Health Operations and Technical Expertise Pillar: A Case Study from WHO AFRO One Year into Response." Tropical Medicine and Infectious Disease 7, no. 8 (2022): 183. http://dx.doi.org/10.3390/tropicalmed7080183.

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Background: following the importation of the first Coronavirus disease 2019 (COVID-19) case into Africa on 14 February 2020 in Egypt, the World Health Organisation (WHO) regional office for Africa (AFRO) activated a three-level incident management support team (IMST), with technical pillars, to coordinate planning, implementing, supervision, and monitoring of the situation and progress of implementation as well as response to the pandemic in the region. At WHO AFRO, one of the pillars was the health operations and technical expertise (HOTE) pillar with five sub-pillars: case management, infect

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Fu, Qiang, Ke Yang, Xiang He, Qinjie Liu, Zhen Wei, and Yu Wang. "Destabilization Mechanism and Stability Control of the Surrounding Rock in Stope Mining Roadways below Remaining Coal Pillars: A Case Study in Buertai Coal Mine." Processes 10, no. 11 (2022): 2192. http://dx.doi.org/10.3390/pr10112192.

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To study the stability control of stope mining roadways below remaining coal pillars, the present study investigates the destabilization mechanism of coal pillars and roadways in sections under the dual action of supporting pressure on the floor of the remaining coal pillar in the overlying coal seam and the mining at the working face of the lower coal seam and clarify the principle of surrounding rock stability control based on theoretical analysis, numerical simulation, and industrial testing. The results yielded the following findings. After the stope mining of the overlying coal seam worki

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32

Petriş, Antoniu Octavian, Călin Pop, and Diana Carmen Cimpoeşu. "The Five Pillars of Acute Right Ventricular Heart Failure Therapy: Can We Keep the Pediment in Balance?" Journal of Clinical Medicine 13, no. 22 (2024): 6949. http://dx.doi.org/10.3390/jcm13226949.

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Acute right ventricular heart failure (aRHF), a long-neglected aspect of heart disease, has recently gained attention due to an improved understanding of its pathophysiology and the development of tailored therapeutic strategies. The therapeutic approach is now built on several pillars that aim to support the stable clinical condition of the patient, starting with the central pillar of etiological or specific therapy and extending to various aspects related to hemodynamic support, ventilation support, fluid optimization, and, when necessary, advanced resources such as right ventricular assist

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Mu, Hongwei, Yongsheng Bao, Dazhao Song, and Dongfang Su. "Investigation of Strong Strata Behaviors in the Close-Distance Multiseam Coal Pillar Mining." Shock and Vibration 2021 (February 4, 2021): 1–14. http://dx.doi.org/10.1155/2021/1263275.

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According to the new stress distribution pattern and the strong strata behaviors as the characteristics of the coal pillars in the close-distance multiseam coal pillar mining, the common characteristics of different types of overlying coal pillars were summarized and analyzed. Moreover, a theoretical model for the mechanism of strong strata behaviors in the close-distance multiseam coal pillar mining was established, which was validated by the monitoring data of seismic computed tomography CT, microseism, and electromagnetic radiation (EMR). Furthermore, the results of the study indicated that

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34

Lei, Zhu, Lifeng Wang, Jiwei Li, et al. "Formation Mechanism of Laser-driven Magnetized “Pillars of Creation”." Astrophysical Journal 954, no. 2 (2023): 130. http://dx.doi.org/10.3847/1538-4357/ace7b6.

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Abstract The Pillars of Creation, one of the most recognized objects in the sky, are believed to be associated with the formation of young stars. However, so far, the formation and maintenance mechanism of the pillars are still not fully understood due to the complexity of the nonlinear radiation magnetohydrodynamics (RMHD). Here, assuming laboratory laser-driven conditions, we studied the self-consistent dynamics of pillar structures in magnetic fields by means of two-dimensional and three-dimensional (3D) RMHD simulations, and the results support our proposed experimental scheme. We find tha

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35

Yan, Hong, Teng Fei Xu, and Yang Li. "Experimental Study on Double Truss Cable Supporting System of Coal Roadways in the Isolated Coal Pillar and Fold Region." Applied Mechanics and Materials 214 (November 2012): 296–300. http://dx.doi.org/10.4028/www.scientific.net/amm.214.296.

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The gangue in parts of underground coal mines in China is not to be hoisted to ground for direct accumulation but replace the coal resource in larger residual coal pillars. In order to solve the supporting problem of roadways in the isolated coal pillar and tectonic region, we firstly research the relationship between the supporting effect and fold or isolated coal pillar factor. Based on the analyzing results, the double truss cable support system (DTCSS) is proposed, and then the corresponding support structure and superiority are studied. Finally, a typical complex coal roadway affected by

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Wiharja, Poppy, Bambang Supriyono, Abdullah Said, and Hermawan. "Collaboration Among Stakeholders in Efforts to Control Peatland Ecosystem Damage to Support Sustainable Development Goals (SDGS)." Revista de Gestão Social e Ambiental 18, no. 7 (2024): e06999. http://dx.doi.org/10.24857/rgsa.v18n7-117.

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Introduction: The government's efforts to control peatland ecosystem damage are a corrective measure to improve management systems in peatland areas. This case study focuses on the KHG Kampar River – Gaung River and KHG Gaung River – Batangtuaka River in Riau Province. These locations were chosen due to their representation of peatland ecosystem restoration activities from 2017 to 2022. Theoretical Review: Hajer and Wagenaar (2003: 33-37) explain in more detail that deliberative policy is an approach in the public decision-making process that focuses on deep discussion and reflection of variou

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AMIR, ANWAR. "The Influence The Five Pillars of STBM Against Stunting Incidence." Jurnal Kesehatan Delima Pelamonia 7, no. 1 (2023): 43–59. http://dx.doi.org/10.37337/jkdp.v7i1.362.

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Stunting is defined as a growth and child development disorder caused by repeated infections and sustainable nutritional deprivation. Maros Regency is in the third highest level of prevalence in South Sulawesi with 42.3%. In Camba District the case of Stunting by 20.8% in 2022. The purpose of this study was to know the effect of five CBTS pillars against the stunting incidence in Camba District of Maros Regency. This research uses Case Control research method with quantitative approach. This study was conducted on May 24 - June 28, 2023, with a population of 855 family card. The sample used in

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Pilková, Anna, Michal Munk, Ľubomír Benko, Petra Blažeková, and Jozef Kapusta. "Pillar 3: Does banking regulation support stakeholders’ interest in banks financial and risk profile?" PLOS ONE 16, no. 10 (2021): e0258449. http://dx.doi.org/10.1371/journal.pone.0258449.

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The paper examines the interest of the commercial banks’ stakeholders in Pillar 3 disclosures and their behaviour during the timing of serious market turbulence. The aim is to discover to which extent current banking regulation supports stakeholders’ interest in the information required by regulators to be disclosed. The examined data consists of log files that were pre-processed using web mining techniques and from which were extracted frequent item sets by quarters and evaluated in terms of quantity. The authors have proposed a methodology to evaluate frequent item sets of web parts over a d

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Zuber, Robert, and Ana Carolina Barry Laso. "Trust but Verify: Building Cultures of Support for the Responsibility to Protect Norm." Global Responsibility to Protect 3, no. 3 (2011): 286–300. http://dx.doi.org/10.1163/187598411x586043.

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AbstractWhether we wish to acknowledge it or not, trust issues permeate all security policy deliberations, including recent discussions at United Nations headquarters focused on building acceptance of the Responsibility to Protect (RtoP) norm and laying out plans for the full implementation of all three of its programmatic 'pillars.' This paper assesses resources for and commitments to trust building in three core areas – trust in the viability of the norm itself, trust in the persons most closely associated with the norm, and trust in the institutions (UN and Regional Bodies) projected to 'ho

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Nguyen, V. N., T. N. Pham, P. Osinski, T. C. Nguyen, and L. H. Trinh. "Substantiation of pillar parameters in mining of inclined coal seams in Quang Ninh Province, Vietnam." Gornye nauki i tekhnologii = Mining Science and Technology (Russia) 7, no. 2 (2022): 93–99. http://dx.doi.org/10.17073/2500-0632-2022-2-93-99.

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Design and operation of auxiliary underground workings in coal mines involves substantiation of parameters of coal pillars and requires development of new approaches to substantiate their geometrics. On the one hand, sufficient stability of a “rock mass – working – coal pillar” system should be ensured. On the other hand, the parameters of “frozen” coal reserves in the pillars should be justified. The joint solution of these two problems requires accurate forecasting based on modern digital models of a rock mass. In this study, a model of rock mass and mine workings with different dimensions o

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Magfirawaty, Magfirawaty, Mohamad Syahral, Dion Ogi, et al. "Measurement of Digital Literacy Index of High School Students or Equivalent in Bogor Regency." Jurnal Abdimas 28, no. 2 (2024): 208–14. https://doi.org/10.15294/26fmrt40.

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The digitalization era is developing rapidly in Indonesia. The pandemic that occurred accelerated digital transformation in various fields. Various digital platforms were developed to support the continuity of education during the pandemic so that they could develop digital skills and improve the status of digital literacy in Indonesia. In addition to the positive impacts, there are also negative impacts from the development of digital transformation. The National Cyber and Crypto Polytechnic which focuses on information security is committed to encouraging increased digital skills and literac

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Wattiheluw, Nur ‘Ain Unsari, and Linda Grace Loupatty. "ANALISIS PERAN BADAN USAHA MILIK DESA (BUMDes) DALAM MEWUJUDKAN SUSTAINABLE DEVELOPMENT GOALS (SDGs) DESA DI KOTA AMBON." Jurnal Akuntansi Kompetif 8, no. 2 (2025): 410–19. https://doi.org/10.35446/akuntansikompetif.v8i2.2179.

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This study aims to analyze the role of Village-Owned Enterprises (BUMDes) in achieving the Village Sustainable Development Goals (SDGs) in Ambon City, with a focus on four main pillars: social development, economisdevelopment, environmental sustainability, and legal and governance systems. The research employs a descriptive qualitative approach, with data collocted through in-depth interviews, observation, and documentation of five BUMDes across five districts in Ambon City: Nusaniwe District (BUMDes Gideon Nusaniwe Sakti), Sirimau District (BUMDes Rurehe), Leitimur Selatan District (BUMDes Ra

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Liu, Chao, Fangtian Wang, Zhenyu Zhang, et al. "Surrounding Rock Deformation Mechanism and Control Technology for the Roadway in the Fault-Disturbed Zone under Special-Shaped Coal Pillars." Processes 11, no. 12 (2023): 3264. http://dx.doi.org/10.3390/pr11123264.

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In order to explore the impact of residual special-shaped coal pillars and fault disturbances on the lower layered roadway, this study takes the short-distance coal seam mining in Luwa Coal Mine as the engineering background to explore the surrounding rock deformation mechanism along the mining roadway in the fault-disturbed zone under special-shaped coal pillars, it presents the roadway surrounding rock control technology and it conducts on-site industrial test verification. The study shows that the abutment pressures on the floor of special-shaped coal pillars are distributed as “three peaks

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Yu, Yang, Jin Ma, Shenen Chen, et al. "Modified Tributary Area and Pressure Arch Theories for Mine Pillar Stress Estimation in Mountainous Areas." Minerals 13, no. 1 (2023): 117. http://dx.doi.org/10.3390/min13010117.

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This paper describes a parametric study using discrete element modeling (DEM) of partial mining in a mountain terrain with in situ pillars for overburden support. For room and pillar mining or strip pillar mining, the accurate estimation of pillar stress is essential to ensure pillar stability and mine safety. Classical mine design methods such as the tributary area theory (TAT) and the pressure arch theory (PAT) are commonly used to calculate the pillar stress for mines under a relatively flat terrain. However, mine sites with uneven terrains can result in nonuniform stress distributions in t

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Suhifatullah, M. I. "Learning to find the meaning of life as educational pillar innovation beyond the unesco concept." Educenter : Jurnal Ilmiah Pendidikan 1, no. 12 (2022): 822–28. http://dx.doi.org/10.55904/educenter.v1i12.522.

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Education is essentially an effort to actualize and develop various potential student personalities, both related to physical and mental aspects. In order for education to produce outputs that have superior competence in dealing with various problems and realities of life, UNESCO formulates 4 (four) pillars of education as a support for the education system, namely: (1) learning to know; (2) learning to do; (3) learning to be; and 4) learning to live together. However, according to the author, these pillars are not sufficient to support one's personality in achieving happiness. Because happine

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Černý, Jan, Anna Černá, and Bohdan Linda. "SUPPORT OF DECISION-MAKING ON ECONOMIC AND SOCIAL SUSTAINABILITY OF PUBLIC TRANSPORT." TRANSPORT 29, no. 1 (2014): 59–68. http://dx.doi.org/10.3846/16484142.2014.897645.

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The main purpose of the paper is to present theoretical findings suitable as a support of decision-making on economic sustainability and accessibility of public transport. Czech experience with solving this problem is taken into account. The paper focuses on the relationship between two of three pillars of public transport sustainability – social and economic. Accessibility of public transport service for the clients is considered the main feature of the social pillar. Three types of accessibility are taken into account: spatial, time and economic. Indicators of all three types are presented a

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Syuhada, Wira. "AL-QUR'AN DAN KEHEBATAN KONSEP LANGIT TANPA TIANG." Al Burhan: Jurnal Kajian Ilmu dan Pengembangan Budaya Al-Qur'an 23, no. 01 (2023): 93–112. http://dx.doi.org/10.53828/alburhan.v23i01.1274.

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The article also explores the concept of pillars in the Quran and their differences from the Western view. In the Quran, pillars are often used as a symbol of stability and strength, representing the steadfastness of believers in their faith. This concept is different from the Western view, where pillars are often seen as mere structural elements that provide support. The philosophical implications of a pillar-less sky in the Quran are also discussed in the article. The symbolism of a pillar-less sky represents the idea of unity and impartiality in Islam, which emphasizes the importance of a u

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Yang, Tao, Yiming Zhang, Jie Zhang, et al. "Study on the Stability and Reasonable Width of Coal Pillars in “Three Soft” Coal Seams Based on a Physical Similarity Simulation Experiment." Applied Sciences 14, no. 14 (2024): 6127. http://dx.doi.org/10.3390/app14146127.

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As the depth of coal seams increases and the demand for coal grows, the deformation and failure of roadways and coal pillars also intensify. To address the instability of roadways, it is crucial to study the appropriate dimensions for coal pillars. This paper focuses on the 1513 working face of the No. 5 coal seam at Anyang Coal Mine to address the issue of insufficient basis for determining coal pillar width. Through field observations and physical similarity simulations, this study examines the overlying strata failure patterns above coal pillars post-mining and the bearing structure formed

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CHEN, B., Q. YUAN, J. H. FAN, J. G. WANG, and J. LUO. "FIBER-CONTINUOUS PILLAR-BOARD BIOCOMPOSITE STRUCTURE IN TUMBLEBUG ELYTRA." International Journal of Modern Physics B 24, no. 01n02 (2010): 191–200. http://dx.doi.org/10.1142/s0217979210064125.

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The observation of scanning electron microscope (SEM) showed that Tumblebug elytra consist of almost parallel upper and lower cuticles. Both of which are a kind of chitin-fiber-reinforced composite. There is a kind of chitin-fiber-reinforced composite pillars between the upper and lower cuticles, which support and connect the upper and lower cuticles uprightly. More careful observation showed that the chitin fibers in the pillars smoothly extend to the upper and lower composite cuticles forming a kind of fiber-continuous pillar-board composite (FCPBC) structure. Based on the observation, two k

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Olalekan, Olawuyi Seyi, and Mushunje, Abbyssinia. "Access to special support grants and relative impact of resilience pillars on households’ resilience capacity in the Eastern Cape, South Africa: Application of FAO’s Shiny RIMA tool." International Journal of Innovative Research and Scientific Studies 6, no. 4 (2023): 868–87. http://dx.doi.org/10.53894/ijirss.v6i4.2086.

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The endowments of resources, institutional management and a household's capacity to handle challenges and unexpected events all contribute to their resilience and well-being. Unfortunately, many people in developing countries are vulnerable to episodes of shock and trapped in a vicious cycle of deprivations that hinder their ability to recover from shocks. This study examined how households’ resilience capability was affected by different resilience pillars and indicators, the pattern of resilience heterogeneity and the relative impact of those pillars on households’ resilience capability in t

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