巷旁开掘卸压巷技术研究与应用  

Technology of Digging Stress-Relax Entry by the Roadside and Its Application

作　　者：鲁岩[1] 邹喜正[1] 刘长友[1] 邢士军 

机构地区：[1]中国矿业大学能源与安全工程学院,江苏徐州221008 [2]兖州煤业集团兴隆庄煤矿,山东兖州272100

出　　处：《采矿与安全工程学报》2006年第3期329-332,336,共5页Journal of Mining & Safety Engineering

摘　　要：为了安全高效的进行地下煤炭资源的开采,根据巷旁卸压基本原理,结合兖州矿区兴隆庄煤矿4324孤岛工作面的实际地质情况,采用理论计算方法,确定卸压巷的合理位置.然后建立数值分析模型,模拟大煤柱中卸压巷开掘前后,运巷的变形情况及其周围的应力分布状态.在现场回采过程中,采用收敛法分别实测有无卸压巷段的运巷表面位移,采用KSE-Ⅱ-1型钻孔应力计分别实测有无卸压巷段的运巷周边应力分布状态.结果表明,卸压巷的开掘,既减小了运巷的表面位移量,又转移了运巷周围的集中应力,改善了运巷的稳定性,有利于回采巷道的维护.Based on the theory of stress-relaxing by the roadside and on the geological situation of No. 4324 working face in Xinglongzhuang coal mine of Yanzhou mining area, the reasonable position of stress-relaxing entry was determined in order to exploit the coal resource safely and efficiently. Then a numeric analytic model was set up to simulate the distortion of the headentry surface and the stress distribution around the headentry before and after digging the stressrelaxing entry in huge coal pillar. In the process of coal extraction, the convergence method was used to measure the surface displacement of the headentry with or without any stress-relaxing entry. And the device KSE-Ⅱ-1 bore stress meter was used to measure the stress distribution of the headentry with or without stress-relaxing entry. The results show that the stress-relaxing entry not only decreases the surface displacement of the headentry, but also transfers the stress concentration around the headentry, thus the stability of the headentry is Improved, making the entry much easier to be maintained.

关 键 词：卸压巷 应力分布 数值模型 煤柱 

分 类 号：TD322.5[矿业工程—矿井建设]