文献类型：期刊文献

英文题名：Investigation on mechanical properties and dilatancy behavior of deeply buried mudstone: A comprehensive study

作者：Yu, Weijian Pan, Bao Li, Ke Wu, Genshui

第一作者：Yu, Weijian

通信作者：Yu, WJ[1];Li, K[2]

机构：[1]Hunan Univ Sci & Technol, Sch Resource Environm & Safety Engn, Xiangtan 411201, Hunan, Peoples R China;[2]Hunan Prov Key Lab Coal Resources Clean Utilizat &, Xiangtan 411201, Peoples R China;[3]Liupanshui Normal Univ, Sch Min & Mech Engn, Shuicheng 553004, Guizhou, Peoples R China;[4]Guizhou Inst Technol, Sch Min Engn, Guiyang 550003, Guizhou, Peoples R China

第一机构：Hunan Univ Sci & Technol, Sch Resource Environm & Safety Engn, Xiangtan 411201, Hunan, Peoples R China

通信机构：corresponding author), Taoyuan Rd, Xiangtan 411201, Hunan, Peoples R China;corresponding author), Minghu Rd, Liupanshui 553004, Guizhou, Peoples R China.

年份：2025

卷号：466

外文期刊名：CONSTRUCTION AND BUILDING MATERIALS

收录：;EI(收录号：20250617835486);Scopus(收录号：2-s2.0-85217025826);WOS:【SCI-EXPANDED(收录号:WOS:001425133900001)】；

基金：This research was financially supported by the National Natural Science Foundation of China (Nos. 52174076, 52474096) , the Science and Technology Innovation Program of Hunan Province (No. 2024RC1065) , the Natural Science Fund of Hunan Province (2023JJ30261) , the Guizhou Provincial Science and Technology Plan (Qiankehejichu-ZK [2022] General 176) and Open Fund of Work Safety Key Lab on Prevention and Control of Gas and Roof Disasters for Southern Coal Mines, China (E22320) .

语种：英文

外文关键词：Triaxial compression; Deeply buried mudstone; Mechanical strength; Dilatancy characteristics

摘要：The dilatancy and deformation of the roadway surrounding rock exert a substantial influence on the mining activities. To obtain the dilatancy characteristics of mudstone, triaxial compression tests (TCT) under different stress loading rates were carried out on mudstone specimens with a depth of nearly 1300 m drilled in the mine site. The one-way analysis of variance method was used to test the significance of the differences in each analysis item's data. As the stress loading rate (Vload) increases, the uniaxial compressive strength (6F) and elastic modulus (E) increase, maximum axial strain (epsilon a.max), maximum radial strain (epsilon d.max), the initial dilatancy strength (f*), and the ratio of the initial dilatancy strength to the maximum strength (f*/6F) decrease. Based on the rock fracture criterion, the calculation method for the dilatancy range of roadway was proposed. The dilatancy range of roadway under different conditions is also studied. Then the dilatancy deformation of the roadway after rupture was calculated through numerical simulation. These results indicate that the dilatancy range of the roadway is roughly consistent with the theoretical calculation. However, the rupture on the surface of the tunnel has a certain guiding effect on the dilatancy range.