顶板疏水快速回采工作面冲击地压机理及防治措施  

Mechanism and Prevention Measures of Rock Burst in Rapid Mining Face of Roof Drainage Area

作　　者：王博 朱斯陶 魏全德[1,2] 顾颖诗 李占成 张斌 WANG Bo;ZHU Sitao;WEI Quande;GU Yingshi;LI Zhancheng;ZHANG Bin(School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;Beijing Anke Xingye Science and Technology Co.,Ltd.,Beijing 100083,China;Yanzhou Coal Mining Ordos Energy Chemical Co.,Ltd.,Ordos 017010,China)

机构地区：[1]北京科技大学土木与资源工程学院,北京100083 [2]北京安科兴业科技股份有限公司,北京100083 [3]兖州煤业鄂尔多斯能化有限公司,内蒙古鄂尔多斯017010

出　　处：《煤矿安全》2020年第7期205-209,共5页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51904017,51674014,51634001);山东省重大科技创新工程资助项目(2019SDZY02)。

摘　　要：以某矿顶板疏水区下快速回采工作面冲击地压显现为工程背景,采用理论分析、数值模拟和现场监测等方法,研究不同回采速度下过顶板疏水区域时的超前支承压力分布规律,揭示顶板疏水快速回采工作面冲击地压发生机理:顶板富水区疏水后形成增压区与卸压区,当工作面快速回采经过疏水形成的增压区时,应力叠加易超过发生冲击地压的临界值,诱发回采工作面发生冲击。在此基础上提出了疏水增压区针对性的卸压措施以及疏水区域前后回采速度阶段调整的防冲方法。Taking the rock burst occurred in the rapid mining face under roof drainage area of a mine as the engineering background,the methods of the theoretical analysis,numerical simulation and field monitoring are used to study the distribution law of lead abutment pressure during passing through the drainage area of the roof at different mining speeds,and the occurrence mechanism of rock bursts in the rapid mining face of roof drainage area is also discovered.The pressure increase area and pressure relief area are formed after drainage in the roof rich-water area.When the working face is rapidly mined through the pressure increase area formed by drainage,the stress superposition easily exceeds the critical value of rock burst occurrence,thus induces the rock burst.On this basis,the targeted pressure relief measures for the drainage-caused pressure increase area and the rock burst prevention method for stage adjustment of mining speed in the drainage area are proposed.

关 键 词：顶板疏水 回采速度 冲击地压 数值模拟 微震监测 

分 类 号：TD324[矿业工程—矿井建设]