不同位置斜井井筒围岩变形破坏规律的数值分析

Surrounding Rock Deformation and Failure Rules Numerical Analysis of Inclined Shaft in Different Position

采用理论分析及数值模拟对伊泰集团塔拉壕矿副斜井穿软弱岩层的井筒破坏规律及支护对策进行了研究,获得以下主要成果:(1)分析得出了塔拉壕煤矿副斜井掘进过程中巷道围岩破坏规律及其形态,并对其破坏形成的分区分类进行探讨;(2)数值模拟在无支护、长锚杆和拱形U型钢支护条件下斜井不同位置变形情况,通过分析不同支护条件下的塑性区分布、水平应力分布、垂直应力分布及垂直位移分布等支护效果,以确定不同形势下合理的支护方案。

Theoretical analysis and numerical simulation are used to study Talahao coal mine vice inclined shaft damage law of soft rock and supporting measures. The conclusions are as follows： （1） analyzes and abtains the destruction rule of surrounding rock of roadway in coal mine auxiliary slope excavation process and its morphology, and discusses the damage formation of the zoning classification; （2）numerical simulation in the absence of support and long and U steel arch anchor suppmting position of slope under the condition of different deformation conditions. Through the analysis of the plastic zone distribution of different supporting conditions, horizontal stress and vertical stress distribution and vertical displacement distribution of supporting effect to determine the reasonable supporting scheme under different situation.