三道沟煤矿地表水害治理工程设计研究
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摘要
随着陕北神府矿区煤层开采面积及深度逐渐增加,煤矿地表变形日趋严重,矿区地表水害已愈演愈烈。结合三道沟煤矿85201和85203两工作面地表水害治理工程进行研究,通过对矿区地质环境条件、采矿条件进行分析,矿区岩移参数确定,以及矿区"三带"发育特征的分析,确定该矿区地表水害主要采用袖阀管注浆工艺进行工程治理。注浆钻孔分为帷幕孔、注浆孔两类,治理深度为地表下15～25 m,治理宽度为沟底过水断面的全部范围,该研究为我国陕北神府矿区地表水害治理提供了有力依据。
With the increase of mining area and depth in Shenfu mining area,surface deformation and surface water hazards of coal mines are becoming more and more serious. Combining with the surface water hazard treatment engineering of No.85201 and No. 85203 working face in Sandaogou coal mine,by analyzing the geological conditions,mining conditions and the characteristics of"three zones",the sleeve valve pipe grouting technology was proposed to treat surface water hazards.The grouting boreholes are divided into curtain boreholes and grouting boreholes. The treatment depth is 15-25 m below the surface,and the treatment width is the whole range of the water-crossing section at the bottom of the gully. The study provides basis for surface water hazard control in Shenfu mining area.
With the increase of mining area and depth in Shenfu mining area,surface deformation and surface water hazards of coal mines are becoming more and more serious. Combining with the surface water hazard treatment engineering of No.85201 and No. 85203 working face in Sandaogou coal mine,by analyzing the geological conditions,mining conditions and the characteristics of"three zones",the sleeve valve pipe grouting technology was proposed to treat surface water hazards.The grouting boreholes are divided into curtain boreholes and grouting boreholes. The treatment depth is 15-25 m below the surface,and the treatment width is the whole range of the water-crossing section at the bottom of the gully. The study provides basis for surface water hazard control in Shenfu mining area.
引文
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