采动应力监测传感装置及应用研究  

On the application of sensing device in mining stress monitoring

作　　者：徐文全[1,2] 王恩元[3] 沈荣喜[3] 王苏健[1,2] 侯恩科[2] 高勤琼 

机构地区：[1]陕西煤业化工技术研究院有限责任公司现代煤炭开采技术研究所,陕西西安710065 [2]西安科技大学地质与环境学院,陕西西安710054 [3]中国矿业大学煤矿瓦斯与火灾防治教育部重点实验室,江苏徐州221116

出　　处：《采矿与安全工程学报》2016年第6期1123-1129,1137,共8页Journal of Mining & Safety Engineering

基　　金：教育部科学技术研究项目(113031A);江苏高校优势学科建设工程项目;中国博士后科学基金项目(2013M541982,2014T70678)

摘　　要：为研究矿山采动空间围岩应力演化规律以及其导致煤岩失稳问题,基于静水压原理开发了采动应力监测传感装置,在实验室对装置进行了弹性及弹塑性介质条件下的加载试验,并利用该装置在神火集团梁北煤矿进行了现场采动应力实测。结果表明:开发的采动应力监测传感装置在完全弹性条件下,监测结果可真实反映煤岩体应力;随着煤岩破碎程度增大,塑性增强,监测结果仍旧能够准确反映采动应力变化趋势。现场实测表明:孤岛工作面走向上,风巷与机巷各测点的垂直应力随工作面的推进逐步升高到峰值后急剧降低,倾向10 m范围内垂直应力增长幅度随测点距巷帮距离的增加呈增大的趋势。To understand mining spatial rock stress evolution and to solve the problem of coal and rock instability, based on the principle of hydrostatic, a real-time stress monitoring device for surrounding rock in mining spatial has been developed. Loading test was conducted onto the device under elastic and elastic-plastic conditions, and field trial was also performed with the device in Liangbei mine, Shenhuo Group. It can be seen that the developed device reflects the actual stress under elastic condition, and that with the increasing degree of coal/rock fragmentation and plastic, the observed results can still accurately reflect the growth trend of mining stress. Field measurement shows that along the Liangbei coal island face, the vertical stress increased and reached its peak value with mining progress in the beginning, and then reduced drastically; within 10 m from the roadway, the farther the distance, the higher the growth rate of vertical stress.

关 键 词：采动应力 应力监测 煤岩失稳 动力灾害预警 

分 类 号：TD324[矿业工程—矿井建设]