摘要
针对阳泉矿区15~#煤顶板破坏进行研究,可以为煤矿的安全生产提供有效信息。通过对研究区15~#煤顶板样品进行力学性质试验研究,得出15~#煤顶板不同岩性岩石的力学参数,再结合数值模拟计算15~#煤开采顶板破坏高度及其对上覆老空积水区的影响。结果表明:15~#煤上方岩层主要为K_2灰岩及泥岩,其抗剪强度为1.18～1.21MPa;综合数值模拟的结果,15~#煤层开采片区在平均采厚为6.8m时,覆岩层垮落带的最大高度应取为31m,导水裂隙带的最大高度取76m。
The research on roof failure of 15#coal in Yangquan mining area can provide effective information for safe production of coal mine. The mechanical properties of 15#coal roof samples in the study area were experimentally studied. The mechanical parameters of different lithologic rocks in 15#coal roof were obtained. Then the failure height of 15#coal roof and its influence on the overlying old goaf water accumulation area were calculated by numerical simulation. The results showed that the strata above 15#coal were mainly K2 limestone and mudstone, and their shear strength was between 1.18 and 1.21 MPa. Comprehensive numerical simulation results showed that when the average mining thickness of 15# coal mining area was 6.8 m, the maximum height of overburden caving zone should be31 m, and the maximum height of water-conducting fracture zone should be 76 m.
作者
袭俸加
张海涛
司凤霞
XI Fengjia;ZHANG Haitao;SI Fengxia(School of Resources and Civil Engineering, Suzhou University,Suzhou Anhui 234000)
出处
《河南科技》
2019年第4期112-114,共3页
Henan Science and Technology
基金
宿州学院第十二届大学生科研项目(KYLXLKYB18-27)资助
宿州学院安徽省煤矿勘探工程技术研究中心科研平台开放课题(2016ykf02)资助
关键词
阳泉
15#煤顶板
岩石力学性质
数值模拟
Yangquan
15# coal roof
rock mechanical properties
numerical simulation
