采矿与安全工程学报Issue(1)：35-41,7.DOI:10.13545/j.cnki.jmse.2016.01.006
上下盘开采顺序对断层煤柱采动应力的影响
Influence of mining sequence of hanging wall and foot wall on mining-induced stress of fault coal pillar
摘要
Abstract
The laws and differences of the load transmission of the basic roof over the gob area of the fault’s two sides have been studied under the condition of different mining sequence of hanging wall and foot wall, based on the articulated balance theory of the fracture rock mass, with the roadway being arranged along the boundary of the fault. And the characteristics of ground pressure of fault coal pillar and the mining gateway nearby have been studied with the method of field test. The study has shown that the load transmitting coefficient of fault is relatively higher, the hanging wall of coal pillar abut-ment pressure is low and that the foot wall coal pressure is relatively higher when the hanging wall of fault is firstly mined. However, the load of transmitting coefficient of fault is related with the angle of fault when the foot wall is firstly mined. When the angle of fault is larger, the load of the gob area over-lying strata can be transmitted to the hanging wall, so the foot wall of coal pillar abutment pressure is low and the hanging wall coal pressure is higher;while the angle of fault is smaller, the load of the gob area overlying strata can hardly be transmitted to the hanging wall, so the foot wall of coal pillar pres-sure is higher and the hanging wall coal pressure is relatively lower. Therefore, different widths of the fault coal pillar should be considered according to different mining sequences.关键词
基本顶/断层/开采顺序/压力传递/煤柱压力Key words
main roof/fault/mining sequence/pressure transmission/pillar pressure分类
矿业与冶金引用本文复制引用
代进,蒋金泉..上下盘开采顺序对断层煤柱采动应力的影响[J].采矿与安全工程学报,2016,(1):35-41,7.基金项目
国家自然科学基金项目(51574155，51344009)；山东省自然科学基金项目(ZR2013EEM018) （51574155，51344009）
