定向长钻孔技术在煤矿井下防治水钻孔施工中的应用
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摘要
针对煤矿井下水害防治钻孔施工中采用传统回转钻进工艺施工存在钻探工作量大、钻孔轨迹不可控、探测盲区等难题,总结了定向长钻孔施工技术在探测老空区、顶板疏放水及底板加固注浆施工中的优势。现场实践表明,采用定向长钻孔技术能够实现钻孔轨迹精确控制,保证钻孔轨迹沿预定探测区域延伸,提高探测精度,为煤矿井下防治水钻孔施工提供了实践经验。
In view of the problem of drilling workload and borehole trajectory is not controllable,detection of blind spots in the coal mine water disaster prevention drill in the traditional rotary drilling techniques in construction, summarizes technology of directional drilling in the detection of goaf,roof drainage and floor reinforcement grouting construction advantages. The practice shows that the directional drilling technology can achieve precise drilling trajectory control,ensure the drilling track extending along the predetermined detection area,improve detection precision, providing practical experience for coal mine water prevention drilling.
In view of the problem of drilling workload and borehole trajectory is not controllable,detection of blind spots in the coal mine water disaster prevention drill in the traditional rotary drilling techniques in construction, summarizes technology of directional drilling in the detection of goaf,roof drainage and floor reinforcement grouting construction advantages. The practice shows that the directional drilling technology can achieve precise drilling trajectory control,ensure the drilling track extending along the predetermined detection area,improve detection precision, providing practical experience for coal mine water prevention drilling.
引文
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[2]虎维岳.矿山水害防治理论与方法[M].北京:煤炭工业出版社,2005.
[3]靳德武.我国煤矿水害防治技术新进展及其方法论思考[J].煤炭科学技术,2017,45(5):141-147.
[4]赵庆彪.奥灰岩溶水害区域超前治理技术研究及应用[J].煤炭学报,2014,39(6):1 112-1 117.
[5]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.
[6]王庆,刘卫卫,崔岩波,等.定向钻进技术在煤层顶板软弱岩层疏放水中的应用[J].煤矿安全,2017,48(5):152-154.
[7]方俊,张杰.定向长钻孔超前疏放顶板水技术在枣泉煤矿的应用[J].煤炭工程,2016,48(7):56-59.
[8]赵祥龙,金鑫.水平定向孔探放煤层顶板砂岩水技术及其应用[J].煤矿机械,2016,37(5):135-137.
[9]董昌乐,牟培英,李泉新,等.煤层底板注浆加固钻孔施工技术及发展趋势[J].煤炭科学技术,2014,42(12):27-31.
[10]张立辉,李伟,范文胜.长距离定向钻探技术在补连塔煤矿的应用[J].煤炭工程,2016,48(S1):30-32+36.