摘要
使用锚杆应力监测仪对现有巷道在回采过程中的应力变化进行监测,共设置了7个监测站,共14个测点,分布于车场以及回采巷道中。通过分析监测数据得到了各测点围岩随采动过程的应力变化规律,并根据应力的大小变化来反映回采工作面的推进对围岩的影响程度,同时验证了在斜巷上方煤层中保护煤柱的临界法线距离的留设,在煤层和受护巷道高差大于15倍的煤厚时,可以忽略采煤工作面回采时对斜井的采动影响。
The bolt stress monitor is used to monitor the stress change of the existing roadway in the mining process.A total of 7 monitoring stations and 14 measuring points are set up,which are distributed in the parking lot and mining roadway.By analyzing the monitoring data,the stress change law of the surrounding rock of each measuring point with the mining process is obtained,and the influence degree of the advance of the mining face on the surrounding rock is reflected according to the change of the stress.At the same time,it is verified that the critical normal distance of the protective coal pillar in the coal seam above the inclined roadway is reserved.When the height difference between the coal seam and the protected roadway is greater than 15 times the coal thickness,and the influence of mining face on inclined shaft can be ignored.
作者
王康健
唐金宝
时宁宁
侯聪聪
洪雯
WANG Kang-jian;TANG Jin-bao;SHI Ning-ning;HOU Cong-cong;HONG Wen(Zhangji Coal Mine,Huainan Mining Industry(Group)Co.,Ltd.,Huainan 232174,China;State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,China;Wuhan Electric Power Technical College,Wuhan 430072,China)
出处
《煤炭科技》
2021年第5期100-104,113,共6页
Coal Science & Technology Magazine
基金
国家自然科学基金面上项目(51774267)。
关键词
锚杆应力检测仪
应力状态
煤柱留设
anchor rod stress detector
stress state
coal pillar set aside
作者简介
王康健(1983-),男,安徽芜湖人,高级工程师,硕士,2005年毕业于安徽理工大学地质工程专业,现任淮南矿业(集团)有限责任公司张集煤矿地测副总工程师,主要从事煤矿地质测量技术管理工作。
