煤矿安全2025，Vol.56Issue(1)：137-145,9.DOI:10.13347/j.cnki.mkaq.20231106
千米深井松软厚煤层沿空煤巷卸压控制技术
Pressure relief and control technology for gob-side roadway in soft and thick coal seam in kilometer-deep coal mine
摘要
Abstract
In order to solve the control problems of deformation and failure in soft and thick coal seam in kilometer-deep coal mine,the gob-side roadway in deep loose and weak thick coal seam is taken as the object.Based on on-site investigation and measurement,the obtained the mechanical strength and structural distribution of coal roadway surrounding rock reveal the deformation and failure characteristics of surrounding rock of high stress coal roadway in deep mine;through a constructed three-dimensional numerical model for surrounding rock of a kilometer deep soft coal roadway,and the the effect of pressure relief hole length and spacing on the pressure relief control of coal roadway were analyzed.A reasonable spacing of 1.0 m and a depth of 10.0 m for pressure relief holes are obtained.Key control technical parameters such as strong support for surrounding rock of gob-side roadway and drilling pressure relief are proposed.The rationality of pressure relief control technology and parameters is verified through combined observation methods such as surrounding rock displacement and anchor cable stress.关键词
千米深井/沿空巷道/卸压控制/松软厚煤层/失稳特征/巷道支护Key words
kilometer-deep coal mine/gob-side roadway/pressure relief and control/soft and thick coal seam/instability character-istic/roadway support分类
矿业与冶金引用本文复制引用
马文伟,梁文勖..千米深井松软厚煤层沿空煤巷卸压控制技术[J].煤矿安全,2025,56(1):137-145,9.基金项目
国家科技重大专项资助项目(2016ZX05045-004-001) （2016ZX05045-004-001）
