扰动应力监测系统的研发及在马鞍山矿的应用  

Research and development of disturbance stress monitoring system and its application in Maanshan mine

作　　者：李子林 孙歆硕[2] 李远 刘子斌 LI Zilin;SUN Xinshuo;LI Yuan;LIU Zibin(School of Civil and Resource Engineering,Beijing University of Science and Technology Beijing,Beijing 100083,China;Patent Examination Cooperation (Beijing) Center of the Patent Office,CNIPA,Beijing 100083,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]国家知识产权局专利局专利审查协作北京中心,北京100083

出　　处：《中国矿业》2019年第9期74-79,共6页China Mining Magazine

基　　金：国家重点研发计划-深部地应力环境与灾害动力学项目资助(编号:2016YFC0600703)

摘　　要：为进一步提高和改进通过消除温度误差以提升测量精度的空心包体应变计应力监测系统的实用性能,检验其在边坡工程中能否实现长期监测的应用效力,2017年4月在安徽省东部马鞍山市南山矿凹山露天采场安装了应力监测系统。在持续40d的监测中,受到当地雨水等气候条件的干扰以及矿坑坡顶废渣倾倒的影响,监测系统所监测得到的应力变化仍然趋于稳定。从温度通道中得到一天中气温数据存在波动,但应力计温度呈明显上升趋势,各通道经温度补偿后,轴向应力变化不大,环向应力变化为1.09~2.53MPa。2018年10月底,在2017年测点处对监测系统修缮后进行二次测量,得到环向应力变化为4.52~8.11MPa,以及轴向应力变化为10.40~11.55MPa,与施工情况及理论值预期范围吻合。该系统实现长期无人值守监测,所采用的传输方式为无线数传电台转换并传输无线信号,这套传输系统能实现中远距离信号传输,并在基站读取及存储监测数据。In order to further improve the practical performance of the temperature compensation-based hollow inclusion strain cell monitoring system,and to test its application effectiveness in the long-term monitoring of slope engineering,a stress monitoring system was installed in the open pit of the Nanshan mine in Maanshan city,eastern Anhui province in April 2017.During the monitoring for about 40 days,the stress changes monitored by the monitoring system were still stable due to the disturbance of climatic conditions such as local rainwater and the dumping of the top of the mine slope.From the temperature channel,the temperature data of the day is fluctuating but the temperature of the stress meter is rising.After the temperature compensation of each channel,the axial stress does not change too much,and the hoop stress changes about 1.09 MPa to 2.53 MPa.At the end of October 2018,the monitoring system was re-measured at the measuring point last year,and we obtained the hoop stress about 4.52 MPa to 8.11 MPa and the axial stress of 10.40 MPa to 11.55 MPa which are consistent with the construction situation and the expected range of theoretical values.The transmission mode adopted by the system for long-term unattended monitoring is to convert and transmit wireless signals through wireless digital radio stations.This transmission system can meet the transmission of medium and long distance signals and we can read and store data at the base station.

关 键 词：空心包体应变计 边坡工程 应力监测系统 无线数传电台 

分 类 号：TU459[建筑科学—岩土工程]