钻探工程2025，Vol.52Issue(4)：139-145,7.DOI:10.12143/j.ztgc.2025.04.018
彬长矿区高家堡矿井大直径排水钻孔施工技术
Construction technology for large diameter drainage drilling in Gaojiabu Minefield,Binchang mining area
摘要
Abstract
The Gaojiabu Mine in the Binchang mining area is located in the middle of the Huanglong Jurassic Coalfield.The main coal seam is overlaid by the Luohe Formation sandstone aquifer,which is characterized by great thickness,low permeability and uneven water abundance.As the mining depth increases,water hazards in the mine seriously threaten safe production.The existing drainage system is unable to meet the demand and needs to be expanded.Therefore,a centralized drainage system was constructed,in which large-diameter drainage boreholes were implemented,with a borehole diameter of Ø950mm and a depth of 810m.A novel method was adopted to fabricate the casing cement buoyancy plug using"casing inner diameter reducer+welded threaded steel ring+prefabricated steel hook",and 378.8t of drainage pipelines were installed.During the construction in this area,complex geological conditions were encountered,and accidents such as borehole collapse,and stuck pipe due to hole shrinkage were prone to occur.The construction passed through the thick Luohe Formation sandstone aquifer with poor rock drillability in some sections,resulting in low drilling efficiency and high overall project difficulty.To address these issues,this paper proposed targeted solutions such as controlling drilling fluid loss,optimizing drilling assembly,and maintaining drilling fluid performance,which achieved good practical application results and provided a feasible solution for water hazard prevention and control in the mining area.关键词
大直径排水孔/浮力塞/下管/固井/洛河组Key words
large diameter drainage hole/buoyancy plug/casing/cementation/Luohe Formation分类
矿业与冶金引用本文复制引用
李源汇..彬长矿区高家堡矿井大直径排水钻孔施工技术[J].钻探工程,2025,52(4):139-145,7.基金项目
河南省自然资源厅科技攻关项目"矿产资源综合利用重载设备研发与关键技术研究"(编号:2023-10) （编号:2023-10）
河南省豫地科技集团科技项目"绿色矿山灾害防治特大直径超大吨位管道井工程钻井关键技术研究及应用"(编号:JTZDKY202403) （编号:JTZDKY202403）
