Safety evaluation of pre-mining water prevention and control on 814 working face of Huangling No.1 Coal Mine
In order to further improve the pre-mining water safety evaluation system of the working face and highlight its im-portant theoretical support and guiding role in ensuring the safe mining of the working face,the 814 working face of Huan-gling No.1 coal mine is taken as the research object.Firstly,based on the hydrogeological conditions of the mine,the objec-tive analysis of the sandstone fissure water in the lower section of the Zhiluo Formation of the roof is conducted,which is the main water hazard factor affecting the safety of the mining of the working face.Secondly,according to the disaster control concept of geophysical exploration and drilling verification,a targeted treatment design scheme combining underground geo-physical exploration and drilling was proposed,and the water inflow during the mining stage of the working face was analyzed and predicted using the"dynamic and static water structure method",providing a reference basis for further improving the drainage system of the working face.Finally,an evaluation was conducted on the effectiveness of water prevention and con-trol measures such as underground geophysical exploration,drilling drainage,and drainage system construction that have al-ready been carried out.Under the premise of dynamic monitoring and control of water inflow in the goaf during the mining process,the normal and effective operation of the drainage system on the working face,and preparation of emergency plans for water hazards,the working face has the hydrogeological conditions for mining.Based on the actual mining situation,there is basically no water during the mining pe-riod of the working face,which strongly supports the feasibility and effectiveness of the pre mining water prevention and con-trol evaluation of the working face.Our study provides reference for the evaluation of water hazard control effects in coal mines and other production and construction enterprises.
mine water hazards prevention and controlhydrogeologyprediction of water inflowwater-rich anomaly zonewater exploration and discharge effect
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