Effects of Coal Mining Height and Width on Overburden Subsidence in Longwall Pier-Column Backfilling

被引：13

作者：

Wang, Xiaozhen ^{[1
,2
]}

Xie, Jianlin ^{[1
]}

Xu, Jialin ^{[1
]}

Zhu, Weibing ^{[2
]}

Wang, Limin ^{[1
,2
]}

机构：

[1] China Univ Min & Technol, State Key Lab Coal Resources & Safe Min, Xuzhou 221116, Jiangsu, Peoples R China

[2] China Univ Min & Technol, Sch Mines, Xuzhou 221116, Jiangsu, Peoples R China

来源：

APPLIED SCIENCES-BASEL | 2021年 / 11卷 / 07期

基金：

中国国家自然科学基金;

关键词：

mining height; mining width; longwall mining; pier-column backfilling; overburden subsidence;

D O I：

10.3390/app11073105

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Longwall pier-column backfilling is a partial backfilling technique initially designed in thin coal seam mines. With the increase of mining intensity, the mining height and width of the backfilling working face will also increase. It is necessary to analyze how changes in working face dimensions influence the control effect of overburden subsidence in pier-column backfilling. In this study, a mining model with a combination of 25 conditions (five different mining heights (1 similar to 3 m) x five different mining widths (80 similar to 240 m)) was designed using a FLAC3D (Vision 5.0) numerical simulation. The simulation was used to analyze the control effect of overburden subsidence with varying mining heights and widths. In addition, according to the field working face conditions, two physical similarity models were performed to explore the overburden subsidence law in pier-column backfilling with different mining heights and widths. It was observed from the above study that mining heights and widths will have a different influence on the overburden subsidence in longwall pier-column backfilling. The result of this study provides strong theoretical support for evaluating the control effect of overburden subsidence in longwall pier-column backfilling.

引用

页数：11

共 21 条

[1] Numerical Analysis of Backfill Face Stability [J].

Bagde, Manoj N. ;

Mitri, Hani S. .

GLOBAL CHALLENGES, POLICY FRAMEWORK & SUSTAINABLE DEVELOPMENT FOR MINING OF MINERAL AND FOSSIL ENERGY RESOURCES (GCPF2015), 2015, 11 :173-179

[2] Implementation of Paste Backfill Mining Technology in Chinese Coal Mines [J].

Chang, Qingliang ;

Chen, Jianhang ;

Zhou, Huaqiang ;

Bai, Jianbiao .

SCIENTIFIC WORLD JOURNAL, 2014,

[3]

[冯光明 Feng Guangming], 2010, [煤炭学报, Journal of China Coal Society], V35, P1963

[4] MANAGEMENT OF HARD COAL MINING AND PROCESSING WASTES IN POLAND [J].

Galos, Krzysztof ;

Szlugaj, Jaroslaw .

GOSPODARKA SUROWCAMI MINERALNYMI-MINERAL RESOURCES MANAGEMENT, 2014, 30 (04) :51-63

[5] Coal pillar safety and surface deformation characteristics of wide strip pillar mining in deep mine [J].

Guo, Weijia ;

Wang, Hailong ;

Chen, Shaojie .

ARABIAN JOURNAL OF GEOSCIENCES, 2016, 9 (02) :1-9

[6]

Koob M, 2015, GEFAHRST REINHALT L, V75, P443

[7] Validation of Rational Backfill Technology for Sekisovskoe Deposit [J].

Krupnik, L. A. ;

Bitimbaev, M. Zh ;

Shaposhnik, S. N. ;

Shaposhnik, Yu N. ;

Demin, V. F. .

JOURNAL OF MINING SCIENCE, 2015, 51 (03) :522-528

[8]

[刘建功 Liu Jiangong], 2010, [煤炭学报, Journal of China Coal Society], V35, P1413

[9] A novel short-wall caving zone backfilling technique for controlling mining subsidence [J].

Liu, Wenbing ;

Xu, Jingmin ;

Zhu, Weibing ;

Wang, Sihua .

ENERGY SCIENCE & ENGINEERING, 2019, 7 (05) :2124-2137

[10]

[缪协兴 MIAO Xie-xing], 2010, [煤炭学报, Journal of China Coal Society], V35, P1

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