浅谈流速流量测井在水文地质勘探中的实用性

Discussion on the practicability of velocity and flow logging in hydrogeological exploration

煤田地质勘探要求对矿区内的水文地质情况进行查明,不仅对地表水系、河流、湖泊、水井、泉眼做出标注和评价,还要对地下岩层富水性强弱、含水层数量、埋深、厚度、涌水量等做到准确的评述,指导后期矿井井筒施工、矿井生产水排放、矿井生活用水合理利用、矿井安全生产和生态环境保护等息息相关的问题。水文抽水试验仅能提供某一个地层段的综合水文地质参数,而对含、隔水层段划分不清楚。流量测井不仅能够准确地划分出钻孔内各含水层、隔水层的深度、厚度、层数,还能评价出各含水层的强弱及单层涌水量、各含水层间的相互关系是吸水还是涌水、各含水层对所要开采的煤层给水大小,是一种比较准确、快捷、经济的物探方法。

Coal mine geological exploration requires to find out the hydrogeological conditions in the mining area,not only mark and evaluate the surface water system,rivers,lakes,wells,springs,but also make accurate comments on the water abundance of underground strata and the number,buried depth,thickness,water inflow of aquifer,so as to guide the later mine shaft construction,mine water discharge,mine water utilization,mine safety production and ecological environment protection.Hydrological pumping test can only provide comprehensive hydrogeological parameters of a certain stratum section,but the division of aquifer and aquiclude section is not clear.Flow logging is a more accurate,fast and economic geophysical method,which can not only accurately divide the depth,thickness and number of layers of each aquifer and aquifuge in the borehole,but also evaluate the water abundance and single layer water inflow of each aquifer,the relationship between each aquifer and the influence of each aquifer on the coal seam mining.