多次破裂立井井壁竖直附加力实测及演化特征分析  

Analysis on the actual measurement and evolution characteristics of vertical additional force on multiple fracturing vertical shaft lining

作　　者：刘勇 周国庆[1] 况联飞[1] 赵光思[1] 梁恒昌[1] LIU Yong;ZHOU Guo-qing;KUANG Lian-fei;ZHAO Guang.si;LIANG Heng-chang(State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221116

出　　处：《煤炭工程》2018年第10期37-40,共4页Coal Engineering

摘　　要：对历经多次破裂治理的华东地区张双楼矿新增的两层传感器的竖直应变进行了监测,分析了立井井壁多次破裂段竖向应变的演化规律,将其历时变化情况与相关文献数据进行对比分析,发现多次破裂段应变波动年均值比一般井壁应变波动大;指出井壁多次破裂治理段只有附加力累积特征,几乎没有季节温度应力的波动特征;发现老副井累积的大量的附加应变主导的竖向应变,与厚表土层的不断疏水沉降密切相关,且发现矿井附近地面应变值比井壁总体应变值小。The vertical strain of the new two-layer sensor in a mine in East China was monitored,which has undergone multiple fracturing. The evolution law of vertical strain in multiple fracturing sections of vertical shaft lining was analyzed.Through comparing its diachronic changes with relevant literature data,it is found that： the annual mean value of strain undulation of multiple fracturing segments is larger than that of general shaft lining strain; there are only vertical additional force accumulation characteristics in the multi fracturing treatment section of the shaft lining,while there is almost no fluctuation characteristic of seasonal temperature stress; the large amount of additional strain-dominated vertical strain accumulated in the old auxiliary shaft is closely related to the continuous hydrophobic settlement of the thick topsoil; the ground strain value around the mine is smaller than the overall strain value of the shaft lining.

关 键 词：立井 井壁破裂 竖直附加力 现场监测 

分 类 号：TD262.1[矿业工程—矿井建设]