陕西煤炭2025，Vol.44Issue(9)：42-46,5.DOI:10.20120/j.cnki.issn.1671-749x.2025.0908
薄煤层"110工法"密集钻孔切顶参数优化设计研究
Parameter optimization design of intensive drilling roof cutting in thin coal seams using"110 construction method"
马驰 1何岭1
作者信息
- 1. 吕梁东义集团煤气化有限公司鑫岩煤矿,山西 吕梁 033000
- 折叠
摘要
Abstract
Based on the geological conditions of the 506 working face in Xinyan Mine,we reveal the key mechanism of dense drilling to cut roof and pressure relief through numerical simulation and field test.The study shows that intensive drilling with hole spacing of 250 mm and hole diameter of 43 mm can effectively guide the roof to fracture along the predetermined cutting line,form a self-stabilizing structure,prompt the transfer of stress to the depth and release the accumulated elastic energy,and significantly reduce the stress of the surrounding rock in the roadway.Field application shows that under the op-timized parameters,the amount of roof subsidence is controllable,the axial force of the anchor cable is lower than the design threshold,the deformation of the surrounding rock tends to be stable after 40 days of the roadway formation,and the overall stability of the remaining section of the roadway reaches the expected goal.关键词
密集钻孔/切顶卸压/薄煤层/参数优化Key words
dense drilling/roof-cutting pressure relief/thin coal seam/parameter optimization分类
矿业与冶金引用本文复制引用
马驰,何岭..薄煤层"110工法"密集钻孔切顶参数优化设计研究[J].陕西煤炭,2025,44(9):42-46,5.
