济宁2#煤深部回采巷道变形破坏规律及对策研究  

STUDY OF DEFORMATION AND FAILURE LAWS OF DEEP ROADWAY AND COUNTERMEASURES IN JINING COAL MINE NO.2

作　　者：杨军[1,2] 孙晓明[1,2] 王树仁[3] 

机构地区：[1]中国矿业大学力学与建筑工程学院,北京100083 [2]中国矿业大学深部岩石力学与地下工程国家重点实验室,北京100083 [3]燕山大学岩土工程研究所,河北秦皇岛066000

出　　处：《岩石力学与工程学报》2009年第11期2280-2285,共6页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家重点基础研究发展计划(973)项目(2006CB202200);国家自然科学基金重大项目(50490270);长江学者和创新团队发展计划(IRT0656)

摘　　要：随着深部地质环境的不断恶化,深部资源开采中重大灾害事故增多,巷道支护出现冒顶、底臌、顶板下沉等破坏现象。以济宁2#煤矿九采区93上06回采巷道为研究对象,通过数值模拟手段再现变形破坏过程,分别对顶板下沉、底臌变形、轴向楔体破坏和沿结构面冒顶4种变形破坏规律进行分析。针对破坏特征,提出巷道支护的优化方案。工程实践表明,通过改变巷道的断面形式、挖掉直接底泥岩和打底角锚杆可以有效地控制巷道的底臌,调整支护参数可以有效控制巷道的顶沉和冒顶。With the deterioration of geological environment, serious disasters increase in deep mining, and many failure phenomena occur in the roadway support, such as caving, floor heave, roof crush and so on. Taking roadway 93up06 in the 9th mining area in Jining coal mine No.2 for example, numerical simulation is used to represent the process of deformation and failure; and four conditions including roof crush, floor heave, axial wedge failure and caving along the structural planes are analyzed. Based on these failure characteristics, an optimized roadway support design is provided. The practice shows that the floor heave can be controlled effectively by changing the cross-section of the roadway, digging out the mudstone in the bottom and using bolts in floor; and then the roof crush and caving can be controlled effectively by modulating the support parameters.

关 键 词：采矿工程 回采巷道 破坏过程 底臌 冒顶 

分 类 号：TD263[矿业工程—矿井建设]