摘要
根据淮南板集煤矿副井的水文地质条件,建立了井筒涌水的计算模型,分析了井筒涌水突变过程中围岩位移场和流场的变化情况。研究表明,井筒涌水过程中,首先在二含和三含交界处出现压缩变形,随着含水层水头不断损失,涌水量由大变小,地表沉降速度加快,最终主副井间松散层形成沉降盆地结构,相邻含水层的强补给造成井筒涌水发生突变。
According to the hydrogeological conditions of auxiliary shaft of Banji Coal Mine in Huainan City,the calculation model of shaft water inrush was simulated and the changes of surrounding rock displacement and flow fields were analyzed.The results show that the compressive deformation of loose aquifer during shaft water inrush,appears in the juncture of the second and third aquifers first.Then with the head loss of aquifer,water inflow changes from big to small,the surface settlement velocity accelerates.Ultimately,the loose layer between main shaft and auxiliary shaft forms subsidence basin.The main reason of an abrupt change of water inrush is strong supply from adjacent aquifers.
出处
《煤炭科技》
2010年第3期1-4,共4页
Coal Science & Technology Magazine
基金
国家重点基础研究发展规划(973)项目(2007CB209400)
国家自然科学基金重点项目(50834005
50834004)
教育部新世纪优秀人才支持计划项目(NCET-08-0837)
江苏省自然科学基金(BK2009092)
"青蓝工程"优秀青年骨干教师计划
国土资源部公益性项目(200811050)
关键词
井筒
涌水
突变
松散含水层
shaft
water inrush
saltation
loose aquifer
