水库坝体下厚煤层工作面开采顺序合理性分析  

Rationality Analysis of Mining Sequence in Thick Coal Seam Working Face Under Dam

作　　者：李永武[1] 

机构地区：[1]新疆工程学院,新疆乌鲁木齐830000

出　　处：《煤矿安全》2018年第2期211-213,218,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51304118)

摘　　要：坝体是地表的一种重要水工建筑物,为解决保护坝体与采煤这一矛盾,运用绿色开采机理及导水断裂带高度对水库坝体下采煤可行性进行论证。为减轻开采对坝体及地表破坏的影响,对已确定的工作面开采顺序进行研究,利用数值模拟对坝体受到的拉应力进行分析,并利用概率积分法预计坝体处地表的水平变形程度,得到相应的应力云图及变形数据。通过现场实测及回采过程中采取的加固措施,进一步确定坝体的稳定性。The dam body is an important hydraulic structure. In order to solve the contradiction between the protection of dam and mining, the feasibility of coal mining under the reservoir is demonstrated by using the mechanism of green mining and the height of water-flowing fractured zone. The determined mining sequence of working face was studied to achieve the purpose of reducing the damage to the dam and surface. The numerical simulation method was used to analyze the tensile stress of dam. By means of probabilistic integration method, the horizontal deformation of the surface of the dam is predicted and the corresponding stress cloud and deformation data are obtained. The stability of the dam is further determined through the field measurement and the reinforcement measures taken during the recovery process.

关 键 词：坝体 开采顺序 厚煤层 协调开采 保水开采 

分 类 号：TD822.1[矿业工程—煤矿开采]