西部矿区首采工作面主控岩层见方破断诱发动压风险研究  

Study on Risk of Dynamic Pressure Induced by Key Strata Fracture in Square Area of the First Face in Western Mining Area

作　　者：张成武 付兴玉 石永生 ZHANG Chengwu;FU Xingyu;SHI Yongsheng(No.3 Coal Mine o f Yongquan Coal Industry(Group)Co.,Ltd.,Yangquan 045000,China;School of Energy and Mining Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;China Coal Research Institute,Beijing 100013,China;China Coal Technology and Engineering Group Shenyang Research Institute,Fushun 113122,China;State Key Laboratory of Coal Mine Safety Technology,Fiishun 113122,China)

机构地区：[1]阳泉煤业(集团)有限责任公司三矿,山西阳泉045000 [2]中国矿业大学(北京)能源与矿业学院,北京100083 [3]煤炭科学技术研究院有限公司,北京100013 [4]煤科集团沈阳研究院有限公司,辽宁抚顺113122 [5]煤矿安全技术国家重点实验室,辽宁抚顺113122

出　　处：《煤矿安全》2020年第6期207-211,共5页Safety in Coal Mines

基　　金：天地科技股份有限公司科技创新创业资金资助项目(2019-TD-QN018,2018-TD-QN004);国家自然科学基金资助项目(51674143)。

摘　　要：针对西部矿区首采工作面见方期间覆岩破断诱发动压问题,利用理论分析方法,通过分析见方区域主控岩层破断概率及见方破断形成的动压力,研究了不同宽度工作面见方区域发生动压的风险。结果表明:西部矿区不同埋深矿井赋存的主控岩层数目不同,各主控岩层破断准距符合随机、均匀分布,且均具有见方破断的可能性,宽度为100、200、300 m的首采工作面主控岩层发生见方破断的概率分别为18.2%、9.1%、6.1%;由损失期望值法发现,随着工作面宽度的增加,见方诱发动压风险增大,并认为需加强西部矿区首采工作面见方动压防护工作,提出了调斜工作面、加强支护及高位定向水力致裂相关措施。Aiming at the problem of dynamic pressure induced by overburden fracture in the square area of the first face in western mining area, based on theoretical analysis, we studied the risk of dynamic pressure in the square area of faces of different widths by analyzing the probability of overburden fracture and the dynamic pressure. The results show that, the number of key strata differs in different buried mines, breaking interval of each key strata distributes randomly and uniformly. Each key layer has the possibility of breaking in the square area. When the width the first mining face are 100 m, 200 m and 300 m, the probabilities of strata breaking in the square area are 18.2%, 9.1% and 6.1%. With the expectation loss method, it is found that the risk of dynamic pressure in the square increases with face width increases. To strengthen the protections of dynamic pressure in the square area is needed, and the measures of adjusting face, strengthening support, and directional hydraulic crack in high strata are given.

关 键 词：西部矿区 首采工作面 见方区域 主控岩层破断 动压风险 

分 类 号：TD323[矿业工程—矿井建设]