陈四楼煤矿底板注浆改造钻孔偏斜及防治技术研究  

Study on Borehole Deflection and Prevention Technology of Grouting Transformation of Floor in Chensilou Coal Mine

作　　者：马广兴 段李宏 高俊 MA Guangxing;DUAN Lihong;GAO Jun(Yongcheng Yongan Mine Safety Technology Engineering Co.,Ltd.,Yongcheng 476600,China)

机构地区：[1]永城永安矿山安全技术工程有限公司,河南永城476600

出　　处：《煤炭技术》2023年第2期158-162,共5页Coal Technology

基　　金：国家自然科学基金资助项目(U1710253)。

摘　　要：为了提高矿井水害防治技术,在总结陈四楼煤矿多年底板注浆技术的基础上,通过对地面勘探钻孔、井下底板注浆改造钻孔进行偏斜规律统计分析,结果表明,注浆孔垂向倾角和终孔点垂深误差最大,注浆孔揭露灰岩层位多数延伸至L_(6)~L_(7)灰岩含水层,“过度”注浆影响了降底整体注浆效果,增加了水害治理成本。为了有效控制陈四楼煤矿底板注浆恶化形势,提出了L_(11)~L_(10)灰岩含水层底板为“主要改造层”的层位控制及控制底板注浆孔孔斜的措施,为矿井下一步水害防治技术提供了依据,指导矿井安全生产。In order to improve the mine water disaster prevention and control technology,through the summary of floor grouting technology in Chensilou coal mine for many years,and through the analysis of the deviation law of surface exploration drilling and underground floor grouting transformation drilling,the results show that the vertical inclination of grouting hole and the vertical depth of final hole point have the largest error,and most of the limestone layers exposed by grouting hole extend to L_(6)-L_(7)limestone aquifer,"excessive"grouting affects the overall grouting effect of bottom lowering and increases the cost of water disaster control.In order to effectively control the deterioration of floor grouting in Chensilou coal mine,the horizon control of L_(11)to L_(10)limestone aquifer floor as the"main transformation layer"and the measures to control the inclination of floor grouting holes are put forward which provides a basis for the next water disaster prevention technology of the mine and guides the safe production of the mine.

关 键 词：水害防治 底板注浆 钻孔偏斜 层位控制 

分 类 号：TD745[矿业工程—矿井通风与安全]