论文部分内容阅读
本文介绍了采用光弹性方法模拟湘西金矿沃溪矿区薄至中厚矿体开采中长锚索和短锚杆联合护顶的试验研究结果。采用环氧树脂模型研究了三种不同跨度(8米、16米、24米)采场,在支护网度为1×0.8米~2及无锚杆护顶时顶板应力分布状况,同时也研了在相同条件下,锚杆支护网度为0.8×0.8米~2、1.6×0.8米~2时顶板应力分布状况,从而阐明了锚杆支护的实际效果。此外,还研究了长锚索和采场充填料对改善顶板应力状态的作用。
In this paper, the experimental results of using photoelastic method to simulate the combined action of medium and long cable and short anchor in the thin to medium thick orebody in the Woxi mining area in the Xiangxi gold deposit are presented. Three kinds of stopes with different span (8m, 16m, 24m) were studied by using epoxy resin model. The stress distribution of the roof when the supporting degree was 1 × 0.8m ~ 2 and without anchor roof was studied. Under the same conditions, under the same conditions, the roof stress distribution of the bolt supporting network is 0.8 × 0.8m ~ 2,1.6 × 0.8m ~ 2, so as to clarify the actual effect of bolt support. In addition, the effect of long cables and stope filling materials on the improvement of roof stress state was also studied.