摘要
为了探查掘进巷道前方顶板含水层的富水异常区,给矿井防治水工作提供依据。结合掘进巷道顶板隔水层较薄和含水层较厚的特点,并且复合含水层之间存在水力联系,采用长距离定向钻探结合瞬变电磁法进行掘进巷道超前探查,利用长距离定向钻孔对巷道上方进行全覆盖,根据钻孔在钻进过程中水量的增加幅度绘制富水性指数等值线图,用来定量表征巷道顶板含水层的富水性情况。在巷道掘进过程中采用瞬变电磁法对顶板含水层的富水性进行探查,圈定富水异常区。利用工作面构造及疏放水情况对富水异常区圈定结果进行验证,结果表明,含水层在断层发育区域的富水性较强,并且富水异常区范围内的疏放水钻孔水量较大,说明长距离定向钻孔和瞬变电磁探查可以作为掘进巷道顶板含水层富水异常区圈定方法。
In order to explore the water-abundance area of aquifer in the front roof of driving roadway,and provied basis for water disaster prenvention and control.Combined with the characteristics of thin aquiclude and thick aquifer on roadway roof,and there is a hydraulic connection between the composite aquifers,long-distance directional drilling technology combined with transient electromagnetic method were used to carry out advanced exploration of roadway driving.Long-distance directional drilling was used to cover the rock on the roadway,and the water-abundance index contour map was drawn according to the increase of water inflow during drilling,which was used to represent the water-abundance condition of the aquifer on the roadway.Transient electromagnetic method was used to detect the water-abundance of the aquifer on the roadway and delineate the water-abundance area.The working face structure and water draining situation were used to test the water-abundance area.The results showed that the water-abundance of aquifer around the fault is stronger,and the water drainage inflow in the scope of water-abundance area is larger.The method of long-distance directional drilling combined with transient electromagnetic exploration can be used to detect the water-abundance area of aquifer on the roadway.
作者
黄忠正
赵宝峰
HUANG Zhongzheng;ZHAO Baofeng(Ningxia Coal Industry Co.,Ltd.,CHN Energy,Yinchuan 750011,China;CCTEG Xi′an Research Institute(Group)Co.,Ltd.,Xi′an 710054,China;Shaanxi Key Laboratory of Preventing and Controlling Coal Mine Water Hazard,Xi′an 710077,China)
出处
《煤炭技术》
CAS
北大核心
2023年第7期108-111,共4页
Coal Technology
基金
国家自然科学青年基金项目(41807221)
陕西省自然科学基础研究计划(2018JQ5150
2022JQ-320)
宁夏人才小高地项目(2018727-8)。
关键词
复合砂岩含水层
掘进巷道
长距离定向钻探
瞬变电磁法
矿井防治水
compound sandstone aquifer
driving roadway
long-distance directional drilling
transient electromagnetic method
water disaster prevention and control in coal mine
