台格庙矿区基岩孔隙裂隙发育规律及富水性分区研究  

Study on Development Law of Bedrock Pores and Fissures and Water-rich Zoning in Taigemiao Mining Area

作　　者：马红卫[1] MA Hongwei(The Fourth Hydrogeological Exploration Team,CNACG,Handan 056001,China)

机构地区：[1]中国煤炭地质总局第四水文地质队,河北邯郸056001

出　　处：《煤》2023年第12期27-31,40,共6页Coal

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.

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 

分 类 号：TD745[矿业工程—矿井通风与安全]