成果归属机构：

工程技术学院

作者：

Shi, Mengjia ; Wang, Dong ; Jiang, Yujing ; Sun, Xiaoming ; Zhang, Yong ; Miao, Chengyu

单位：

Shandong Univ Sci & Technol, State Key Lab Disaster Prevent & Ecol Protect Open, Qingdao 266590, Peoples R China;Nagasaki Univ, Grad Sch Engn, Nagasaki 8528521, Japan;China Univ Min & Technol Beijing, State Key Lab Tunnel Engn, Beijing 100083, Peoples R China;China Univ Min & Technol Beijing, Sch Mech & Civil Engn, Beijing 100083, Peoples R China;China Univ Geosci Beijing, Sch Engn & Technol, Beijing 100083, Peoples R China

摘要：

In the intricate geological milieu of deep mining areas, the interplay of water and fractures profoundly diminishes the stability of the surrounding rock, rendering it more susceptible to disturbances engendered by mining operations. This process triggers cumulative damage and initiates dynamic hazard failures, thereby compromising the stability of mine tunnels. The present study investigates the mechanical properties, energy dissipation, and evolution of failure modes of water-bearing single-fractured sandstone under dynamic disturbances of different amplitudes. The results indicate that: (1) Increased water content significantly reduces the compressive strength of sandstone, heightening its sensitivity to disturbances. (2) Across increasing disturbance amplitudes (1-5 MPa), sandstone exhibits significantly higher dissipation energy density and accelerated damage accumulation. While its failure mode transitions from tensile to mixed shear-tensile failure. These results provide fundamental insights into instability mechanisms and dynamic hazard control strategies for deep water-rich soft rock mines.

基金：

National Natural Science Foun-dation of China [52204101, 52304110, U24A2085]; Natural Science Foundation of Shandong Province [ZR2024ME014]

语种：

英文

DOI：

10.1016/j.tafmec.2025.105242

来源：

THEORETICAL AND APPLIED FRACTURE MECHANICS,2026():.

出版日期：

2026-02

提交日期：

2025-10-19

引用参考：

Shi, Mengjia; Wang, Dong; Jiang, Yujing; Sun, Xiaoming; Zhang, Yong; Miao, Chengyu. Analysis of mechanical properties and failure modes of single-fracture water-bearing sandstone under different dynamic disturbances[J]. THEORETICAL AND APPLIED FRACTURE MECHANICS,2026():.