煤层顶板巨厚砂砾岩含水层可疏放性评价  

Drainage Feasibility Evaluation of Thick Glutenite Aquifer on Coal Seam Roof

作　　者：赵宝峰 曹海东 马莲净[2,3] 李耿 ZHAO Baofeng;CAO Haidong;MA Lianjing;LI Geng(CCTEG Xi＇an Research Institute,Xi＇an 710077,China;School of Environmental Science and Engineering,Chang＇ an University,Xi＇ an 710064,China;Ky Laboratory of Subsurface ttydrology and Ecological Effects in Arid Region of Ministry of Education,Chang＇ an University,Xi＇ an 710064,China)

机构地区：[1]中煤科工集团西安研究院有限公司,陕西西安710077 [2]长安大学环境科学与工程学院,陕西西安710064 [3]长安大学旱区地下水文与生态效应教育部重点实验室,陕西西安710064

出　　处：《矿业安全与环保》2018年第4期102-105,共4页Mining Safety & Environmental Protection

基　　金：国家重点研发计划项目(2016YFC0501104;2016YFC0600708);中煤科工集团西安研究院面上项目(2016XAYMS10)

摘　　要：为了论证煤层顶板巨厚砂砾岩含水层疏放的可行性,结合含水层的水文地质条件和井下涌水量数据,分析了含水层水位对井下集中和持续涌水的响应,利用放水试验对含水层的可疏放性进行了研究。结果表明:巨厚砂砾岩含水层渗透性较好,具有充沛的补给水源,无论是井下集中涌水还是持续涌水,含水层水位均大幅降低,井下出水点涌水量也显著减小并趋于稳定,可以通过大流量长时间疏放降低含水层水位和消耗静态储存量,在工作面回采前对含水层进行顶板水疏放具有可行性。In order to demonstrate the drainage feasibility of thick glutenite aquifer on coal seam roof,combined with hydrogeological conditions of aquifer and data of downhole water inflow. The response of aquifer water level to concentrated and continuous upwelling of water underground was analyzed,and drainage feasibility of aquifer was studied based on dewatering test.The result showed that the thick glutenite aquifer has good permeability and abundant water supply. The aquifer water level is reduced greatly whether it is a concentrated upwelling or a continuous upwelling,and water inrush at downhole outlet points is significantly reduced and tends to be stable. High flow drainage for a long time can be used to reduce aquifer water level and consume static storage of groundwater. It is feasible to drainage groundwater of aquifer on coal seam roof before working face mining.

关 键 词：煤层顶板 砂砾岩含水层 可疏放性 放水试验 水文地质条件 水害防治 

分 类 号：TD745[矿业工程—矿井通风与安全] X913.4[环境科学与工程—安全科学]