摘要
根据王家岭井田地质、水文地质条件,提出了井田内上马家沟组岩溶含水层应属富水性中等-强含水层。采用关键层理论及突水系数法,研究了王家岭煤矿开采2号煤层时的充水因素及顶底板突水危险性。通过对煤层顶板的基岩风化裂隙水及采空积水的分析,对2号煤层底板太原组和上马家沟组灰岩岩溶水突水系数进行了计算。结果表明:井田南部2号煤层,雨季时基岩风化裂隙水对煤层开采有较大影响;201、202、204、206采区南部为采空积水透水危险区;201、202采区为太灰突水危险区和奥灰突水相对危险区,其他采区为相对安全区或安全区。
According to the geological and hydrological conditions of Wangjialing Minefield,the karst aquifer in the Up Majiagou Group within the minefield would be a watery middle and high aquifer.The key stratum theory and the water inrush coefficient method was applied to study the water filling factors and the water inrush danger during the No.2 seam mining in Wangjialing Mine.With the analysis on the weathered crack water of the base rock in the roof above seam and the water accumulated in goaf,a calculation was conducted on the water inrush coefficient of the karst water in the limestone of the seam floor in Taiyuan Group and Up Majiagou Group.The results showed that in No.2 seam at the south part of the minefield,the weathered crack water in the base rock in the raining season would have large influences to the seam mining.No.201,No.202,No.204 and No.206 mining blocks in the south part of the minefield would be the water inrush danger zone due to the water accumulated in the goaf.No.201 and No.202 mining blocks would be the water inrush danger zones of Taiyuan limestone and the water inrush danger zones of the Ordovician limestone.Other mining blocks would be relative safety zones and safety zones.
出处
《煤炭科学技术》
CAS
北大核心
2011年第12期120-124,共5页
Coal Science and Technology
关键词
王家岭煤矿
充水因素
突水系数法
关键层理论
突水危险性
Wangjialing Mine； water filling factor； water inrush coefficient method； key stratum theory； water inrush danger
