摘要
为了分析高阳矿9-11#煤层带压开采的安全性,依据水文地质勘探成果,对奥陶系峰峰组和上马家沟组用运抽水试验、流量测井试验和水化学分析实验进行了研究。研究表明峰峰组含水层岩溶裂隙不发育,富水性差,矿化度高;上马家沟组含水层富水性较好,矿化度低;且二者水化学成分差异显著,二者不存在水力联系。峰峰组上部岩溶裂隙不发育且被充填,组成平均厚约17.5 m的隔水层。突水系数分析表明,井田内突水系数小于0.1 MPa/m,大部分区域突水系数小于0.06 MPa/m,具备带压开采条件。但井田中部突水系数大于0.06 MPa/m,且断裂较发育,属突水危险区,应采取措施预防突水灾害发生。
To analyze the safety of mining above confined aquifer in Gaoyang Mine,according to the achievement of hydrogeologic prospecting,we research Ordovician upper Majiagou formation and Fengfeng formation aquifers by pumping tests,flow well logging tests,hydrochemical anlysis tests. The results show that undeveloped Karst fissures of aquifer,poor water-rich and high degree of mineralization are characters of Fengfeng formation; well water-rich and low degree of mineralization are charactered in aquifer of upper Majiagou formation. There is dramatical difference in the hydrochemical constituents between Fengfeng formation and upper Majiagou formation,and there is no hydraulic connection between them. Undeveloped and filled Karst fissures in upper Fengfeng formation form water-resisting layer with about average thickness of 17. 5 m. Water bursting coefficient analysis reveals that water bursting coefficient is less than 0. 1 MPa/m,and most of area is less than 0. 06 MPa/m with conditions of mining above confined aquifer. However,the water coefficient is greater than 0. 06 MPa/m in central section of mine and fault structures are commonly developed,which belongs to water bursting dangerous area. Measures should be taken to prevent water inrush disaster.
出处
《煤矿安全》
CAS
北大核心
2016年第10期187-190,共4页
Safety in Coal Mines
关键词
峰峰组
矿化度
隔水层
带压开采
突水系数
Fengfeng formation
degree of mineralization
water-resisting layer
mining above confined aquifer
water bursting coefficient
