Similar material and numerical simulation of strata movement laws with long wall fully mechanized gangue backfilling

被引：30

作者：

Guo Guang-li ^{[1
,2
]}

Zha Jian-feng ^{[1
,2
]}

Miao Xie-xing ^{[3
]}

Wang Qiang ^{[1
,2
]}

Zhang Xian-ni ^{[1
,2
]}

机构：

[1] China Univ Min & Technol, Jiangsu Key Lab Resources & Environm Informat Eng, Xuzhou 221116, Peoples R China

[2] China Univ Min & Technol, Sch Environm Sci & Spatial Informat, Inst Min Damage & Protect, Xuzhou 221008, Peoples R China

[3] China Univ Min Technol, State Key Lab Geomech & Deep Underground Engn, Xuzhou 221116, Peoples R China

来源：

PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON MINING SCIENCE & TECHNOLOGY (ICMST2009) | 2009年 / 1卷 / 01期

基金：

中国国家自然科学基金;

关键词：

coal mining with gangue backfilling; subsidence coefficient; density; control effect;

D O I：

10.1016/j.proeps.2009.09.167

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

This paper studies on strata and surface movement laws with long wall fully mechanized gangue backfilling technology by similar material simulation and numerical simulation method. The results indicate that 1) the overlying strata under the situation of mining with long wall fully mechanized gangue backfilling mainly shows a slow bending and subsidence, characterized by bending, fracturing, and bed separating, while the overlying strata develops fractured zone and bending zone only; and 2) if the compression rate of backfill is about 30%, the surface subsidence coefficient is around 0.22. In addition, this paper points out that improving the filling rate of gangue backfilling in goaf and the initial density of filling body are the main technological way to enhance the controlling effect of strata movement. Based on this point of view, four technical measures are proposed at the end.

引用

页码：1089 / 1094

页数：6