摘要
为有效防治断层夹持不规则工作面冲击地压,建立断层诱发冲击力学模型分析断层冲击地压成因,得到不规则工作面的侧向的支承压力表达式分析其冲击地压成因;采用数值模拟和理论分析原岩应力、构造应力、采动应力对冲击地压发生诱发机制,得到断层夹持与不规则双因素耦合工作面冲击地压成因和断层与工作面冲击地压显现特征。提出断层夹持型不规则工作面冲击地压耦合防控原理与技术体系。针对具体煤层地质和开采条件,采用以硐室为基础,以注水和爆破钻孔为主要措施形成连续缺陷体的整体防控技术,以断层区和不规则区和不规则煤柱区防控措施为主的局部防控技术的缺陷防控的整体防控技术进行了现场实践,验证了缺陷防控技术体系的有效性。
In order to prevent and control the mine rock burst of the irregular face clamped with the fault,a mechanics model of the fault-induced rock burst was established and was applied to analyze the cause of the rock burst.An expression formula of the lateral support pressure of the irregular face was obtained and applied to analyze the causes of the rock burst.The numerical simulation and theory were applied to analyze the in-situ stress,structure stress and mining stress affected to the induction mechanism of the rock burst.The rock burst causes of the coupling face with the fault and irregular double factors as well as the rock burst behavior features were obtained.The rock burst coupling prevention principle and technical system of the fault clamped irregular face was provided.According to the geology and mining condition of the certain seam,based on the chamber,the water injection and blasting boreholes as the principal measures were applied to form the completed prevention and control technology of the continued defect mass.A site practices were conducted on the completed prevention technology of with the defect prevention and control of the local prevention technology with the fault zone and irregular zone as well as the irregular coal pillar zone as the principal prevention measures.The affectivity of the defect prevention and control technology system was approved.
作者
潘立友
李彩荣
陈理强
PAN Liyou;LI Cairong;CHEN Liqiang(Mining Engineering of Research Institute,Shandong University of Science and Technology,Taian 271019,China;College of Mining and Safety Engineering,Shandong University of Science and Technology,Qingdao 266590,China)
出处
《煤炭科学技术》
CAS
北大核心
2018年第10期45-50,共6页
Coal Science and Technology
基金
国家重点研发计划资助项目(2017YFC0804201)
国家自然科学基金资助项目(51674159
51804186)
关键词
断层夹持型
不规则工作面
应力集中
冲击地压防控
clamped fault
irregular mining face
stress concentrated
rock burst prevention and control
