梁北煤矿11141工作面采动应力分布规律  

Disturbance Stress Distribution Law of Working Face 11141 of Liangbei Coal Mine

作　　者：王嗣衡[1,2] 王恩元[1,2] 沈荣喜[1,2] 张敬民[1,2] 金佩剑[1,2] 董超[1,2] 

机构地区：[1]中国矿业大学安全工程学院,江苏徐州221116 [2]煤炭资源与安全开采国家重点实验室,江苏徐州221116

出　　处：《煤矿安全》2014年第9期226-228,231,共4页Safety in Coal Mines

基　　金："十二五"国家科技支撑计划资助项目(2012BAK04B07)

摘　　要：采用自主研发的采动应力监测系统对梁北煤矿11141工作面进行采动应力实时监测,通过数值模拟及工程实践相结合的方法分析了工作面前方煤体采动应力的变化特征及规律。结果表明,梁北煤矿11141工作面前方煤体内部采动应力变化经过原始稳定期、缓慢增长期、快速增长期以及卸压期4个阶段;采动影响距离为100 m左右,应力峰值为35 MPa左右,应力集中区范围为10~30 m。The disturbance stress of working face 11141 of Liangbei Coal Mine was monitored by independent developing real- time monitoring system. By combining engineering practice method with numerical simulation,the change characteristics and laws of the disturbance stress of the coal ahead of the working face were analyzed specifically. The results showed that there were four changing phases of the coal disturbance stress ahead of the working face11141 in Liangbei Coal Mine- original stable phase,slowly increasing phase,quickly increasing phase and stress relief phase; The disturbance influence range was about 100 m,the peak stress value was about 35 MPa and the stress concentration area was about 10 to 30 m.

关 键 词：采动应力 冲击矿压 现场实测 数值模拟 卸压钻孔 

分 类 号：TD323[矿业工程—矿井建设]