煤岩三向应力监测系统研发及在冲击矿井中的应用  

Research of three-dimensional stress monitoring system for coal-rock and its application in rockburst mine

作　　者：沈荣喜 袁子晨 王恩元 陈同庆 李跃文 侯振海 陈海亮 谷雨 SHEN Rongxi;YUAN Zichen;WANG Enyuan;CHEN Tongqing;LI Yaowen;HOU Zhenhai;CHEN Hailiang;GU Yu(School of Safety Engineering,Key Laboratory of Gas and Fire Control for Coal Mines Ministry of Education,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China;Xuzhuang Coal Mine,Datun Coal Power Company of China National Coal Group Corporation,Xuzhou,Jiangsu221600)

机构地区：[1]中国矿业大学安全工程学院,煤矿瓦斯与火灾防治教育部重点实验室,江苏徐州221116 [2]中煤集团大屯煤电公司徐庄煤矿,江苏东徐州221600

出　　处：《采矿与安全工程学报》2023年第1期155-163,共9页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(52074276,51104156);中央高校基本科研业务费专项项目(2019XKQYMS55);国家重点研发计划项目(2022YFC3004702)。

摘　　要：为了及时准确获取煤岩体应力参数,研究工作面地应力分布规律及三向采动应力演化特征,对自主研发的基于静压传递原理的三向应力监测系统进行应力传感性能测试,并将该系统应用于徐庄煤矿7335工作面。测试结果表明:三向应力监测系统传感器工作性能良好,可满足实际工程需求;徐庄煤矿7335工作面的最大主应力σ_(1)为14.36 MPa,倾角为76.44°,以垂直应力为主;工作面三向采动应力超前影响范围约为125 m,应力峰值区约为5~46 m,可将应力突增作为冲击地压危险前兆特征。三向应力监测系统可实现应力感应弹片与煤岩体的主动耦合,能够实时、连续、定向监测煤岩体三向应力的动态变化,为煤岩动力灾害监测预警提供有效手段及方法。In order to obtain the stress parameters of coal-rock mass timely and accurately, which contributes to understand the distribution laws of in-situ stress and the evolution characteristics of three-dimensional mining stress, the stress sensing performance of the self-developed three-dimensional stress monitoring system based on the principle of static pressure transfer was tested, where the system was applied to the 7335 working face of Xuzhuang Coal Mine. The test results showed that the sensor of the three-dimensional stress monitoring system had good working performance and met the actual engineering requirements. The maximum principal stress σ_(1) of 7335 working face in Xuzhuang Coal Mine was 14.36 MPa, the dip angle was 76.44 °, and the vertical stress was dominant. The advance influence range of three-dimensional mining stress in this working face was about 125 m, and the peak stress area was about 5-46 m. The sudden increase of stress was regarded as a dangerous precursor of rock burst. The monitoring system realized the active coupling between stress-sensing sensor chips and coal-rock mass, and monitored the dynamic change of three-dimensional stress of coal-rock mass in real time, that continuously and directionally, provided effective means and methods for monitoring and early warning of coal-rock dynamic disasters.

关 键 词：三向应力 采动煤岩 冲击地压 监测系统 灾害预警 

分 类 号：TD32[矿业工程—矿井建设]