废弃井筒老空水探测及疏放技术研究
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摘要
废弃井筒由于位置难以确定、积水空间小,探测及疏放难度极大,一直是老空水防治的难点。针对四川达州某煤矿废弃井筒水患治理过程中由于井筒位置发生偏移导致钻探放水屡次失败的工程实例,研究分析了钻探失败原因,通过采用物探、钻探等综合探测技术并调整原施工方案及施工工艺,成功地对井筒老空水进行了疏放。
The discarded wellbore is difficult to determine because of its location, and the space of water accumulation is small. Detection and drainage is extremely difficult, has always been a difficult problem in goaf water prevention and control. Aiming at the engineering failures of drilling and water discharge caused by the deviation of wellbore position during the process of abandoning wellbore in a coal mine in Dazhou, Sichuan, the reasons for drilling failure were studied and analyzed. The comprehensive exploration technology such as geophysical exploration and drilling was used to adjust the original construction plan and construction process. Successfully drained the old goaf water in the wellbore.
The discarded wellbore is difficult to determine because of its location, and the space of water accumulation is small. Detection and drainage is extremely difficult, has always been a difficult problem in goaf water prevention and control. Aiming at the engineering failures of drilling and water discharge caused by the deviation of wellbore position during the process of abandoning wellbore in a coal mine in Dazhou, Sichuan, the reasons for drilling failure were studied and analyzed. The comprehensive exploration technology such as geophysical exploration and drilling was used to adjust the original construction plan and construction process. Successfully drained the old goaf water in the wellbore.
引文
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[2]乔宁,丁亮斌.上覆不明采空区突水危险性分析及积水范围探测[J].煤炭科学技术,2017,45(8):48-54.
[3]方军.废弃小窑掩埋井井筒探测及封堵技术探讨[J].金属矿山,2015(4):216-219.
[4]袁东锋,周禹良,邵晨霞,等.碾子沟煤矿副斜井老空水突水预测及注浆治理技术[J].煤炭技术,2015,34(12):192-194.
[5]张本军,段晓平,尹尚先.老空水综合探查预防技术研究[J].华北科技学院学报,2016,13(2):10-14.
[6]陈善乐,汪华君,李雨成.基于瞬变电磁法探测工作面底板含水性研究[J].煤炭科学技术,2014,42(3):96-98.
[7]李林贵,黄胜昔,杨柱,等.综合物探技术在金属矿山水害防治中的应用[J].采矿技术,2015,15(2):71-73.
[8]杨忠,段会军,白刚,等.定向钻进技术在煤矿采空区疏放水中的应用[J].中州煤炭,2015(6):16-18.
[9]许峰,杨茂林.定向钻探技术在神东矿区防治水中的应用[J].矿业安全与环保,2017,44(1):70-73.
[10]石浩,张杰.煤矿井下精确定向探放水技术[J].煤矿安全,2015,46(2):64-67.