摘要
顾北煤矿A组煤受到灰岩水害严重威胁。采用顺层定向长钻孔工艺技术对工作面底板灰岩含水层进行探查,依据地层特征,对定向钻孔套管孔段、回转钻进孔段、定向造斜孔段、定向稳斜孔段的施工方法及关键技术进行分析研究,并选取13321工作面及13121工作面实施定向探查钻孔进行实践验证。结果表明,定向长钻孔技术实现了对工作面底板含水层全覆盖探查,目标层钻遇率高,一次性探放距离远,减少常规钻孔工程量,经济效益显著。该技术的成功实施解决了顾北煤矿区水害探查难题。
Group A of coal seam in Gubei Coal Mine is seriously threatened by limestone water hazards.Used the technology of directional long drilling along the seam to explore the limestone aquifer in the floor of the working face.According to formation characteristics,studied the construction methods and key technologies of directional drilling opening section,directional inclination section and directional stable unloading section.And directional exploration drilling was carried out in 13321 and 13121 working faces for practical verification.The results show that directional long drilling technology can realize the exploration of full coverage of aquifer in working face floor,with high rate of drilling in the target horizon and long distance in one exploration,which can reduce the amount of routine drilling work and bring significant economic benefits.The successful implementation of the technology solved the problem of limestone water hazards in Gubei Coal Mine.
作者
孙阳
赵永哲
朱昌淮
彭旭
缪长军
杨忠
SUN Yang;ZHAO Yongzhe;ZHU Changhuai;PENG Xu;MIAO Changjun;YANG Zhong(Xi’an Research Institute Co.Ltd.,China Coal Technology and Engineering Group Corp.,Xi’an 710077,China;Huaizhe Coal and Electricity Co.Ltd.,Huainan 232100,China)
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2019年第S01期117-121,共5页
Coal Geology & Exploration
关键词
底板防治水
探查疏放
定向钻进
顾北煤矿
安徽淮南
water prevention in coal floor
exploration and drainage
directional drilling
Gubei coal mine
作者简介
第一作者:孙阳,1991年生,男,河南信阳人,硕士研究生,助理工程师,从事煤矿井下定向钻进技术研究与推广工作.E-mail:sunyang@cctegxian.com
