煤层顶板砂岩含水层疏放水效果评价  

Evaluation of Drainage Effect of Roof Sandstone Aquifer of Coal Seam

作　　者：赵宝峰[1,2] 

机构地区：[1]中煤科工集团西安研究院,陕西西安710054 [2]中国地质大学(武汉)环境学院,湖北武汉430074

出　　处：《矿业安全与环保》2013年第6期36-38,共3页Mining Safety & Environmental Protection

基　　金：国家科技支撑计划项目(2012BAC10B00);中煤科工集团西安研究院青年基金项目(2013XAYQN004)

摘　　要：为了科学合理地评价煤层顶板砂岩含水层疏放水效果,在工作面涌水量预测方面,采用含水层静储量和动态补给量联合预测的方法,结合钻孔疏放水总量和残余水量进行分析:当钻孔疏放水总量等于或大于含水层静储量,且钻孔残余水量等于或小于含水层动态补给量时,即可判断煤层顶板砂岩含水层疏放水效果良好。实例分析表明,含水层静储量和动态补给量联合预测的结果与实际情况较为吻合,并且当钻孔疏放水总量大于含水层静储量、钻孔残余水量小于含水层动态补给量时,实现了工作面的安全回采。利用工作面涌水量预测结合钻孔疏放水观测资料的方法评价煤层顶板砂岩含水层疏放水效果科学合理,可以应用到类似工作面采前的水文地质条件安全评价中。In order to scientifically evaluate the drainage effect of roof sandstone aquifer of coal seams, a prediction method combining the static reserves amount with the dynamic supply amount was adopted for the prediction of water inrush in the working face, the analysis on the total drainage amount from the borehole and the residual water amount indicated that when the total drainage amount from the borehole was greater than the static reserves amount in the aquifer and the residual water amount in the borehole was equal to or less than the dynamic supply amount, the drainage effect of the roof sandstone aquifer was good. The case analysis showed that the prediction method combining the static reserves amount with the dynamic supply amount was tallied with the actual situation. When the total drainage amount from the borehole was greater than the static reserves amount in aquifer and the residual water in the borehole was less than the dynamic supply amount, the safe mining of the working face can be realized. The method by combining the prediction of water inrush in the working face with the observation data of borehole drainage was scientific and reasonable for evaluating the drainage effect of the roof sandstone aquifer of coal seams, and can be applied in safety evaluation of the hydrogeological conditions of similar working faces before mining.

关 键 词：砂岩含水层 疏放水总量 残余水量 静储量 动态补给量 效果评价 

分 类 号：TD743[矿业工程—矿井通风与安全] X913.4[环境科学与工程—安全科学]