煤炭与化工2026，Vol.49Issue(7)：1-8,21,9.DOI:10.19286/j.cnki.cci.2026.07.001
坚硬顶板切顶留巷参数优化与围岩非对称支护技术研究
Research on parameter optimization of roof cutting retaining roadway with hard roof and asymmetric support technology of surrounding rock
袁树豪 1吕晓磊 2徐波 3赵松涛4
作者信息
- 1. 山东科技大学,能源与矿业工程学院,山东青岛 266590
- 2. 国网能源哈密煤电有限公司大南湖一矿,新疆哈密 839000
- 3. 鄂托克前旗长城六号矿业有限公司,内蒙古鄂托克前旗 016200
- 4. 山东矿机集团股份有限公司,山东潍坊 261000
- 折叠
摘要
Abstract
The problems of strong dynamic pressure and asymmetric large deformation control faced by gob-side entry retaining under hard roof were studied.The optimization of roof cutting and pressure relief parameters was conducted by combining theoretical analysis,numerical simulation and field tests.The optimal parameter combination with a roof cutting height of 15 m and a roof cutting angle of 15° was determined.Two evaluation indicators,namely height pressure relief efficiency(ηH)and angle pressure relief efficiency(ηω),were established,and the critical thresholds for parameter optimization were quantitatively identified.Sensitivity analysis was performed,and it was revealed that the roof cutting height was the dominant factor controlling the stress redistribution of surrounding rock after roof cutting.The rotation path of rock blocks was optimized by the roof cutting angle,and the stability of surrounding rock was finely adjusted accordingly.A collaborative support system was proposed according to characteristics of asymmetric stress field formed after roof cutting.Theoretical basis engineering demonstration were provided for gob-side entry retaining under similar geological conditions.关键词
坚硬顶板/切顶留巷/数值模拟/切顶高度/切顶角度/卸压效率Key words
hard roof/roof-cutting entry retaining/numerical simulation/roof cutting height/roof cutting angle/pressure relief efficiency分类
矿业与冶金引用本文复制引用
袁树豪,吕晓磊,徐波,赵松涛..坚硬顶板切顶留巷参数优化与围岩非对称支护技术研究[J].煤炭与化工,2026,49(7):1-8,21,9.
