摘要
以渭北煤田桑树坪煤矿为例,通过对11~#煤充水因素和底板有效隔水层阻水性能进行分析,采用突水系数修正公式对煤层底板突水危险性进行预测和分区。结果表明:井田北部区域突水系数均小于0.06 MPa/m,属于带压开采安全区;井田中南部大部分区域突水系数大于0.06 MPa/m,其中突水系数介于0.06~0.1 MPa/m的正常块段,属于带压开采过渡区;突水系数介于0.06~0.1 MPa/m的构造破坏块段、大于0.1 MPa/m的地段,属于带压开采危险区。
Taking Sangshuping coal mine in Weibei coal field as an example,by analyzes the water filling factors of 11# coal seam and the water-proof capability of the effective barrier in the bottom plate, using water inrush coefficient correction formula to forecast and partition the water-bursting risk of coal seam floor. The results show that the water inrush coefficient in the northern part of the well is under 0.06 MPa/m,which belongs to the safe area of the pressure mining. The water inrush coefficient in the central and southern part of the field is greater than 0.06 MPa/m,the water burst coefficient is from 0.06 MPa/m to 0.1 MPa/m, which belongs to the belt mining transition zone. The tectonic failure block is from 0.06 MPa/m to 0.1 MPa/m,with a water burst coefficient greater than 0.1 MPa/m, belongs to the danger area of pressure mining.
作者
郝长胜
赵冉
柴敏
HAO Chang-sheng, ZHAO Ran, CHAI Min(School of Mining and Coal, Inner Mongolia University of Science and Technology, Baotou 014010, Chin)
出处
《煤炭技术》
CAS
2018年第4期117-119,共3页
Coal Technology
关键词
带压开采
充水因素
突水系数
安全评价
pressure mining
water filling factors
water burst coefficient
safety evaluation
