论文部分内容阅读
本文是我国急倾斜薄矿脉矿床的一篇综合性地压研究资料。经综合性观测和试验,测定了岩石、岩体物理力学性质,岩体的应力状态,进行了工程地质分析。观测结果表明,本矿区地压活动的特点表现为:受结构弱面控制;不稳定岩体沿结构弱面向空区崩滑;岩移与时间的关系曲线(l～t曲线)遵循一定的规律;地压活动过程呈现明显的阶段性;经矸石充填处理空区后,大范围地压活动过程持续时间长,破坏不剧烈。本文还简述了矿区上部中段的空区处理方法;地压活动区矿量的回采情况;以及下部中段的空区处理方法。
This article is a comprehensive study of ground pressure in the steeply dipping thin vein deposits in China. After comprehensive observation and experiment, the physical and mechanical properties of rock and rock mass and the stress state of rock mass were measured, and the engineering geological analysis was carried out. The observation results show that the characteristics of the underground pressure in this mining area are as follows: controlled by the weak surface of the structure; unstable rock mass collapse along the weak surface of the structure; the curve of rock displacement and time (l ~ t curve) follows a certain rule ; The process of ground pressure activity shows a distinct stage; after the empty area is filled with waste rock, the process of large-scale ground pressure activation has a long duration and the destruction is not severe. This article also briefly describes the treatment of the empty area in the upper middle part of the mining area, the recovery of the ore mass in the area under the pressure-activated area, and the treatment of the empty area in the middle part of the lower part.