Dynamic tensile strength and fracture evolution of characteristic shale with bedding and hole using linear regression theory
Yabo Chai, Ning Luo, Jianan Zhou, Haohao Zhang, Penglong Li, Yu Wang, Cheng Zhai, Tianran Ma
发布时间：2026-09-02
关键词：Dynamic tensile strength and fracture evolution of characteristic shale with bedding hole using linear regression theory
摘要：AbstractIn methane in situ explosion fracturing technology, it is critical to investigate the effects of bedding characteristics and perforation holes on the dynamic mechanical properties and fracture behavior of shale reservoirs. Dynamic Brazilian splitting experiments were conducted to investigate the effects of the bedding angle and the central aperture on the dynamic mechanical properties a...
阅读全文 PDF 引用Study on the failure mechanism of the shield excavation face in the sandy cobble stratum under different buried depths
Hua Jiang, Chongyang Liu, Ao Zhang, Xiaoyan Zhang, Yuhang Li
发布时间：2026-09-02
Probability prediction of true-triaxial compressive strength of intact rocks based on the improved PSO-RVM model
Qi Zhang, Maohui Wang, Ning Wang, Yixin Shen, Xuzhen He
发布时间：2026-09-01
关键词：Probability prediction of truetriaxial compressive strength intact rocks based on the improved PSORVM model
摘要：AbstractIn deep underground engineering design, the true-triaxial compressive strength of intact rocks is a critical evaluation index. Traditional methods for acquiring true-triaxial strength data are hampered by labor-intensive manual operations. To mitigate the time-consuming nature of true-triaxial experiments, this study leverages the unique capabilities of the relevance vector machine (RVM...
阅读全文 PDF 引用Creep properties and constitutive model of diabase in deep water conveyance tunnels
Zhigang Tao, Pengxiao Guan, Xiaojie Yang, Keyuan Liu, Mingjiu Cai, Hong Yang
发布时间：2026-09-01
关键词：Creep properties and constitutive model of diabase in deep water conveyance tunnels
摘要：AbstractAiming at the creep characteristics of the surrounding rock of the Haidong water conveyance tunnel of the Central Yunnan water diversion project and taking the diabase at the tunnel fault zone as the research object, compression creep tests were conducted under a range of confining pressures, revealing the axial and lateral creep characteristics of diabase. Based on the theory of fracti...
阅读全文 PDF 引用Optimization of cut-hole layout under high in situ stress based on numerical simulation and field tests
Junjie Zhao, Diyuan Li, P. G. Ranjith, Xinxin Lü, Yanliang Li, Xiaoli Su
发布时间：2026-07-06
关键词：Optimization of cuthole layout under high in situ stress based on numerical simulation and field tests
摘要：AbstractA well-designed cut-hole layout is crucial for improving drilling and blasting efficiency in deep underground engineering. For this purpose, this study investigates the patterns of blast-induced rock damage under various cut-hole layouts and ground stress conditions through numerical simulations and field tests. The key cut-hole parameters include uncoupling coefficients (K), the empty ...
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