An analytical solution of direction evolution of crack growth during progressive failure in brittle rocks
Xiaozhao Li, Lianjie Li, Fayuan Yan, Chengzhi Qi, Mikhail A. Guzev, Evgenii V. Kozhevnikov, Artem A.
发布时间：2024-09-30
关键词：An analytical solution of direction evolution crack growth during progressive failure in brittle rocks
摘要：AbstractMicrocrack growth during progressive compressive failure in brittle rocks strongly influences the safety of deep underground engineering. The external shear stress τxy on brittle rocks greatly affects microcrack growth and progressive failure. However, the theoretical mechanism of the growth direction evolution of the newly generated wing crack during progressive failure has rarely bee...
阅读全文 PDF 引用The influence of the disturbing effect of roadways through faults on the faults' stability and slip characteristics
Shuaifeng Lu, Andrew Chan, Xiaolin Wang, Shanyong Wang, Zhijun Wan, Jingyi Cheng
发布时间：2024-09-30
关键词：The influence of the disturbing effect roadways through faults on stability and slip characteristics
摘要：AbstractIn order to mitigate the risk of geological disasters induced by fault activation when roadways intersect reverse faults in coal mining, this paper uses a combination of mechanical models with PFC2D software. A mechanical model is introduced to represent various fault angles, followed by a series of PFC2D loading and unloading tests to validate the model and investigate fault instabilit...
阅读全文 PDF 引用A comprehensive study on in situ stress field characteristics and changes in rock mechanical properties in deep mines in northeastern Yunnan, China
Hui Wang, Bangtao Sun, Cong Cao, Shibo Yu, He Wang, Ye Yuan, Hua Zhong
发布时间：2024-09-30
关键词：A comprehensive study on in situ stress field characteristics and changes rock mechanical properties deep mines northeastern Yunnan China
摘要：AbstractThe Maoping lead–zinc mining area is a significant metal mine site in northeastern Yunnan. In this study, both hydraulic fracturing in situ stress testing and ultrasonic imaging logging were first carried out in the mining area. Second, 930 focal mechanism solutions and 231 sets of stress data near the mining area were collected. Then, the variations in the type of in situ stress field...
阅读全文 PDF 引用Seismic performance of concrete tunnel–sand–pile interaction by the shake table test
Md. Foisal Haque, Mehedi A. Ansary
发布时间：2024-09-30
关键词：Seismic performance of concrete tunnelsandpile interaction by the shake table test
摘要：AbstractThis research presents the square root sum of squares response of displacements and tunnel moments under the Kobe and Loma Prieta seismic excitations with a peak ground acceleration of 0.05 g for various dry relative densities of local sand in Bangladesh. For this reason, a one-dimensional gravitational shake table test was performed after calibration to determine the seismic performan...
阅读全文 PDF 引用A review of mechanical deformation and seepage mechanism of rock with filled joints
Lei Yue, Wei Li, Yu Liu, Shuncai Li, Jintao Wang
发布时间：2024-09-30
关键词：A review of mechanical deformation and seepage mechanism rock with filled joints
摘要：AbstractVarious defects exist in natural rock masses, with filled joints being a vital factor complicating both the mechanical characteristics and seepage mechanisms of the rock mass. Filled jointed rocks usually show mechanical properties that are weaker than those of intact rocks but stronger than those of rocks with fractures. The shape of the rock, filling material, prefabricated fissure ge...
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