Dynamic tensile strength and fracture evolution of characteristic shale with bedding and hole using linear regression theory
发布时间：2026-03-18
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Numerical and experimental study on P-wave propagation across a rock joint with different orientations
Yaghoob Zarei, Mojtaba D. fallahi, Ali Uromeihy, Mohammad R. Nikoodel, Mohammad Fathollahy
发布时间：2026-03-18
关键词：Numerical and experimental study on Pwave propagation across a rock joint with different orientations
摘要：AbstractDetermination of the required parameters in different science contexts using the ultrasonic wave velocity (UWV) has been one of the favorite topics of researchers in recent years. This paper presents numerical and experimental studies to investigate the effect of joint orientation on longitudinal wave (P-wave) velocity. The study started with a numerical simulation, in which a cylindric...
阅读全文 PDF 引用Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie
发布时间：2026-03-18
关键词：Multiple injection techniques to stimulate complex fracture networks in coal reservoirs A case study on gas disaster reduction of subsurface mine southwest China
摘要：AbstractThe development and utilization of coalbed methane or coal mine gas has been a key way to ensure safe production and solve gas disaster reduction issues in coal mines. As an effective method, the hydraulic fracturing technique can increase both the number of fractures and their degree of connectivity, thereby improving the gas permeability in coal reservoirs. This study concentrates on ...
阅读全文 PDF 引用Semi-analytical solution for the stability of deep vertical shaft considering time-dependent rock-structure interaction
Bin Chen, Pinqiang Mo, Zhao Lu, Lianfei Kuang, Qiang Zhang, Abolfazl Eslami
发布时间：2026-03-18
关键词：Semianalytical solution for the stability of deep vertical shaft considering timedependent rockstructure interaction
摘要：AbstractThis study focuses on the stability of deep vertical shafts in underground construction, addressing critical concerns in mining and geotechnical engineering. A semi-analytical approach is proposed to capture the time-dependent ground response during shaft excavation in an elasto-visco-brittle-plastic medium. This solution accounts for variations in internal cavity pressure and the time ...
阅读全文 PDF 引用A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard rock
Biao Wang, Zaobao Liu, Jing Xue, Bo Lu, Wei Zeng, Dengke Zhang
发布时间：2026-03-18
关键词：A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard
摘要：AbstractRock brittleness is an important mechanical property that describes damage of rocks. This study proposes a rock brittleness evaluation index considering the postpeak energy release rate and damage surface morphology parameters. The accuracy of the brittleness index is verified by the triaxial direct shear test of granite under different confining pressures. By comparing the accuracy and...
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