DOI: 10.11799/ce201701012
Study on cross-section form and support optimization in weakly consolidated soft rock roadway
HE Guang-liang
WANG Wei-ming
ZHANG Wei-she
LV Xian-zhou
Abstract：In order to study the best form of cross-section structure and corresponding support measures in weakly consolidated soft rock roadway, based on the engineering background of weakly consolidated soft rock roadway of Yili No. 4 Mine, the special working conditions was analyzed with various cross-section forms and difficulty in support measure determination. The paper used FLAC3D numerical software to analyze the surrounding rock deformation and rock plastic zone distribution in weakly consolidated soft rock roadway under complicated geological conditions in different cross-section forms and corresponding support measures. The results show that different cross-section forms has great impact on the surrounding rock deformation and rock plastic zone distribution, and surrounding rock deformation of rectangular section is the largest. According to the comparison of the surrounding rock deformation amount and rock plastic zone distribution in five cross-sections, horseshoe section was selected for further analysis of surrounding rock deformation and rock plastic zone distribution under different support measures. The result was compared with site monitoring data, according to which a supporting measure was proposed for weakly consolidated soft rock roadway, applying secondary bolt-mesh-grouting and pre-stressed cable.
Keywords：weakly consolidated soft rockcross-section formsupporting measuresurrounding rock deformation
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 38-41 )