摘要
自20世纪90年代以来,东欢坨矿副井井架出现下沉,累积下沉量已超过100mm。井架下沉已影响副井提升系统的正常运行与安全,虽然经过两次调整但并未从根本上解决问题。依据变形观测数据,论文对工业广场周边煤层开采情况、地下水位变化情况、副井井架承受荷载情况进行分析,发现井下疏水作用、地面工业广场及周边地区水源井取水导致第四系地下水位逐年下降,逐步引起地面沉降,最终导致了井架下沉。最后,文章对东欢坨矿副井井架下沉提出了具体的防治措施。
Headframe of Donghuantuo Coal Mine auxiliary shaft has been subsiding since the 1990＇s, for over 100mm, affecting the operation and security of the hoisting system. According to the data of deformation observation, the paper analyzed the situation of coal mining surrounding the industrial square, the changes of the underground water level, and the load of the auxiliary shaft headframe, indicating that the decline of quaternary system underground water level was caused by the underground mine water drainage and water intaking from water source well at surface plant and surrounding area, leading to surface subsidence, and headframe consequently. And prevention measures against headframe subsidence were proposed for Donghuantuo Coal Mine auxiliary shaft.
出处
《煤炭工程》
北大核心
2014年第10期140-142,共3页
Coal Engineering
关键词
井架沉降
地下水位
下沉机理
防治措施
headframe subsidence
groundwater level
subsidence mechanism
prevention measures
