文献类型：期刊文献

中文题名：直墙半圆拱形巷道变形破坏影响因素分析

英文题名：Analysis of Influence Factors on Deformation and Failure of Straight Wall Semi-circular Arched Tunnel

作者：廖志恒

第一作者：廖志恒

机构：[1]贵州理工学院矿业工程学院

第一机构：贵州理工学院矿业工程学院

年份：2018

卷号：49

期号：3

起止页码：187-189

中文期刊名：煤矿安全

外文期刊名：Safety in Coal Mines

收录：CSTPCD;;北大核心:【北大核心2017】；

语种：中文

中文关键词：正交试验;数值模拟;巷道综合变形量;评价指标;拱形巷道

外文关键词：orthogonal test; numerical simulation; comprehensive deformation of roadway; evaluation index; arched tunnel

摘要：通过对巷道变形破坏特征进行分析,选取侧压系数λ、围岩垂直压力p、岩体的黏聚力C、岩体的内摩擦角φ、岩体的单轴抗拉强度σ_t等5个主控因素,经过正交试验设计,研究它们对直墙半圆拱形巷道的变形破坏影响程度。试验结果表明:对直墙半圆拱形巷道围岩塑性区体积的影响大小为内摩擦角>侧压系数>垂直应力>黏聚力>抗拉强度;对直墙半圆拱形巷道综合变形量影响大小为抗拉强度>内摩擦角>侧压系数>黏聚力>垂直应力。
Through analyzing the deformation characteristics of the tunnel, five main controlling factors, including the lateral pressure coefficient A, the vertical pressure p of the surrounding rock, the cohesion C of the rock mass, the internal friction angle of the rock mass and the uniaxial tensile strength of were selected. The orthogonal experiment was designed to study the influence of these five factors on the deformation and failure of the straight wall arch tunnel. The experimental results show that： the influence degree on plastic zone volume of the surrounding rock in straight wall semicircle arch tunnel is internal friction angle 〉 lateral pressure coefficient 〉 vertical stress 〉 cohesion 〉 tensile strength; the influence degree of the comprehensive deformation in the straight wall semi-circular arched tunnel is as follows, tensile strength 〉 internal friction angle 〉 lateral pressure coefficient 〉 cohesion 〉 vertical stress.