摘要
为了减轻顶板砂岩水对矿井安全生产的威胁,以台格庙矿区各井田为例,结合专项水文地质勘查成果,采用层次结构分析法,深入分析了地质构造、裂隙特征、含水层厚度、岩心采取率、单位涌水量、渗透系数、冲洗液消耗量等,进行了煤层顶板砂岩孔隙裂隙发育特征研究和富水性分区预测。结果表明:煤层顶板砂岩孔隙裂隙发育不均匀,勘查区西北部、一井田南部为孔隙裂隙发育区,中部孔隙裂隙发育相对较弱;首采煤层顶板含水层勘查区中部的富水性强-较强,周边的富水性较弱-弱。提出了建设井下排水系统、超前疏排地下水、探放采空区积水、启封封闭不良钻孔、隐伏构造探查等的防治水措施。
In order to reduce the threat of roof sandstone water to the mine safety production,taking each mine field in Taigemiao mining area as an example,combining with the results of special hydrogeological exploration,adopted the analytic hierarchy process,the geological structure,fracture characteristics,aquifer thickness,core recovery rate,water inflow per unit,permeability coefficient and flushing fluid consumption are deeply analyzed,the characteristics of pore and fissure development of sandstone in the roof of coal seam are studied and the water-rich zoning prediction is made.The results show that the development of pores and fissures in the sandstone of the coal seam roof is not uniform.The northwest of the exploration area and the south of Well-field system are the areas with pores and fissures,while the middle is relatively weak.The water-rich property in the middle of the exploration area of the first coal seam roof aquifer is strong,while the water-rich property in the periphery is weak.The water prevention and control measures are put forward,such as constructing underground drainage system,draining groundwater ahead of time,exploring and releasing water in mined-out area,opening and sealing bad borehole,and exploring hidden structure,etc.
作者
马红卫
MA Hongwei(The Fourth Hydrogeological Exploration Team,CNACG,Handan 056001,China)
出处
《煤》
2023年第12期27-31,40,共6页
Coal
关键词
顶板水害
层次结构分析法
归一化
裂隙发育指数
富水性指数
roof water disaster
analytic hierarchy process
normalization
fracture development index
water-rich index
作者简介
马红卫(1971-),男,河南洛阳人,高级工程师,从事水文地质等工作。
