钻探工程2024，Vol.51Issue(z1)：411-414,4.DOI:10.12143/j.ztgc.2024.S1.066
北徐楼煤矿超大口径投料孔施工技术
Construction technology of super-large diameter feed hole in Beixulou coal mine
石天峰 1王凯 1罗庆银 1赵元强1
作者信息
- 1. 山东省煤田地质局第二勘探队,山东 济宁 272100||国家矿山应急救援山东特勘队,山东 济宁 272100
- 折叠
摘要
Abstract
During the mining process,coal mining enterprises dump a large amount of coal gangue on the ground.Through the construction of a super-large bore hole near the ground coal gangue bin to the underground roadway,the solid waste of coal gangue produced can be transported to the underground gob,which can not only solve the environmental pollution of coal gangue on the ground,but also effectively control the movement and deformation of the surface,so as to realize the green and sustainable development of coal mines.In the construction practice of large diameter feeding hole in Beixulou coal mine,Tengbei mining area,Shandong Province,small diameter pilot hole is pre-constructed,5-stage re-expanding hole is opened in one stage,and 4-stage re-expanding hole is opened in the second stage,and a large diameter feeding hole is drilled in a coal mine with positive circulation of mud and air lift reverse circulation of cone bit.Its mature construction scheme has certain guiding significance for the large diameter drilling project.关键词
超大口径钻孔/投料孔/分级扩孔/煤矸石处理Key words
super-large diameter drilling/feeding hole/stage reaming/coal gangue treatment分类
矿业与冶金引用本文复制引用
石天峰,王凯,罗庆银,赵元强..北徐楼煤矿超大口径投料孔施工技术[J].钻探工程,2024,51(z1):411-414,4.
