工作面底板奥灰水综合探查与评价技术

Comprehensive exploration and evaluation technique of Ordovician limestone water under floor of working face

针对奥陶系灰岩含水层水害威胁问题,提出了工作面采掘前底板奥灰水综合探查与评价技术体系,并对保德煤矿81505工作面进行了综合探查与评价实例研究。结果表明,81505工作面在采取物探、地震和钻探等一系列防治水措施后,未发现奥灰水源及垂向导水构造,同时工作面排水能力能够满足正常排水需要,从防治水安全角度出发认为工作面具备安全回采条件。

Aiming at the water hazard problem of ordovician limestone aquifer,this paper came up with a comprehensive exploration and evaluation system of Ordovician limestone aquifer water under floor before working face excavation,and did further research on 81505 working face of Baode Coal Mine. The results showed that after a series of water control measures,such as geophysical prospecting,seismological and drilling exploration,were adopted on 81505 working face,no Ordovician limestone aquifer water and vertical water-conducting structure were found,meanwhile,the drainage capacity of the working face can meet the normal needs. Therefore,81505 working face can reach the safe recovering conditions from the perspective of water hazards prevention.