摘要
Abstract
In order to show the failing mechanics of No.14 ventilation shaft in Jinchuan mine district, ifrstly, according to the geological conditions of shaft, three-dimension model was established to integrate No. 1 ore body and No.14 ventilation shaft. Then, the effect of mining on the stability of No.14 ventilation shaft was evaluated numerically based on the ubiquitous joint model, the displacement and stress distribution of shaft were obtained to predict the failing location and time, which shows that the direct reason of failure of No.14 ventilation shaft is the sliding of surrounding rock mass induced by mining. Besides, complex geological conditions and low-strength supporting type are also the factors causing the damage of shaft, which offer some basis for the repairing of shaft.关键词
遍布节理模型/岩体移动/破坏机理/安全系数Key words
Ubiquitous joint model/Rock mass movement/Failing mechanics/Safety factor分类
矿业与冶金
