抽水蓄能电站斜井导孔施工关键技术研究  

Study on Key Technology of Pilot Hole Construction in Inclined Shaft of Pumped-storage Power Station

作　　者：王志晓 陈振国 陈龙[3,4] WANG Zhixiao;CHEN Zhenguo;CHEN Long(CCTEG Coal Mining Research Institute,Beijing 100013,China;Coal Mining Branch,China Coal Research Institute,Beijing 100013,China;Beijing China Coal Mine Engineering Co.,Ltd.,Beijing 100013,China;Mine Construction Branch,China Coal Research Institute,Beijing 100013,China)

机构地区：[1]中煤科工开采研究院有限公司,北京100013 [2]煤炭科学研究总院开采研究分院,北京100013 [3]北京中煤矿山工程有限公司,北京100013 [4]煤炭科学研究总院建井研究分院,北京100013

出　　处：《水力发电》2021年第4期84-87,101,共5页Water Power

摘　　要：抽水蓄能电站斜井开挖多采用反井钻井法,而导孔钻进作为反井钻井施工的第一道工序,钻孔的精度、成孔质量直接影响后续斜井工程的成败。通过引用煤炭行业斜井专用钻机、优化调整不同钻进层段钻具组合、无线随钻测线仪+螺杆钻具的高精度轨迹控制技术及钻井液护壁技术,成功完成一条斜长295.6 m、终孔偏斜率仅为0.45%的导孔,导孔轨迹平滑且精确入靶,为后续抽水蓄能电站斜井工程施工提供了宝贵经验。The raise boring method is often used in inclined shaft excavation of pumped-storage power station,and the pilot hole drilling is the first procedure of raise boring construction.The accuracy and quality of pilot hole drilling directly affects subsequent inclined shaft construction.A pilot hole with an inclined length of 295.6 m and a deviation rate of only 0.45%is successfully completed by using the special drilling rig for inclined shaft in coal industry,optimizing and adjusting the BHA of different drilling intervals,high-precision trajectory control technology of wireless line while drilling instrument and screw drilling tool,and drilling fluid wall protection technology.The trajectory of pilot hole is smooth and accurate,which provides valuable experience for the construction of inclined shaft of pumped-storage power station.

关 键 词：抽水蓄能电站 反井钻井法 导孔 斜井钻机 无线随钻测斜仪 

分 类 号：TD262.6[矿业工程—矿井建设] TV743[水利工程—水利水电工程]