煤矿井下精确定向探放水技术

发布时间：2018-07-01 20:00

本文选题：精确定向钻孔 + 钻孔轨迹控制　；参考：《煤矿安全》2015年02期

【摘要】：针对传统煤矿井顶板、采空区的探放水孔距离短、精度低易造成探测盲区等难题,以煤矿井下螺杆马达造斜定向钻技术为基础,开展定向探放水孔开孔及孔口装置安装、定向探放水钻钻进、终孔排水等技术研究,形成了一套煤矿井下精确定向探放水施工方法,可精确控制长定向钻孔轨迹的命中探测区域、一孔多分支孔增加探测区域,实现对采空区积水、富水层中水有效排放。利用其技术在宁煤石炭井顺利施工采空区放水孔7个,共排水300万m3,在中煤母杜柴登矿施工富水层探水孔3个,最大孔深708 m,实例表明本技术可以施工钻孔深度700 m以上的探放水孔,提高钻孔探放水范围和精度,有效保障煤矿生产安全。
[Abstract]:In view of the problems of the traditional roof of coal mine, such as the short distance of the water detecting hole in the goaf and the low precision, which can easily lead to the blind area of detection, and based on the technology of making inclined directional drill by screw motor in the underground coal mine, the installation of the opening and opening device of the directional water detecting and discharging hole is carried out. Based on the research of directional drilling and drainage, a set of construction methods of directional drilling and discharging in coal mine has been formed, which can accurately control the hit detection area of long directional drilling trajectory, and increase the detection area by one hole with multiple branch holes. The water in goaf can be discharged effectively. By using its technology, 7 drainage holes in the goaf in the smooth construction of Ning coal Carboniferous well, 3 million m3 drainage, and 3 water exploration holes in water-rich strata in Moduchaiden Mine, Zhongshan Coal Mine, have been constructed. The maximum hole depth is 708 m. The example shows that this technique can be used to construct the drilling hole with a depth of more than 700 m, improve the range and precision of drilling water exploration and discharge, and effectively guarantee the safety of coal mine production.
【作者单位】：中煤科工集团西安研究院有限公司;
【基金】：“十二五”国家科技重大专项基金资助项目(2011ZX05040-001-004)
【分类号】：TD745.22

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