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Experimental Study On The Stress Wave Attenuation Effect Of Filled Cracks In Rocks Under Confining Pressure, Xin Liu, Hong-Fa Xu, Peng-Xian Fan, Han-Sheng Geng, Jia-Quan Mo, De-Rong Wang
Experimental Study On The Stress Wave Attenuation Effect Of Filled Cracks In Rocks Under Confining Pressure, Xin Liu, Hong-Fa Xu, Peng-Xian Fan, Han-Sheng Geng, Jia-Quan Mo, De-Rong Wang
Rock and Soil Mechanics
To study the effectiveness of filled cracks as a means of anti-blasting and wave-elimination for underground protective structures, 36 one-dimensional impact tests were carried out on the intact rock specimens and rock specimens with filled cracks using the SHPB apparatus. The transmittance, stress wave velocity and peak stress value of the specimen under different working conditions were obtained. The impacts of confining pressure level, filling thickness and filling material types on stress wave attenuation were analyzed. The results show that, with the increase of the thickness of the filled cracks, the transmittance of the specimen, stress wave velocity, and stress …
Experimental Study On The Mechanical Behavior And Particle Breakage Characteristics Of Hydraulic Filled Coral Sand On A Coral Reef Island In The South China Sea, Yang Wu, Jie Cui, Neng Li, Xing Wang, Yi-Hang Wu, Shu-Yang Guo
Experimental Study On The Mechanical Behavior And Particle Breakage Characteristics Of Hydraulic Filled Coral Sand On A Coral Reef Island In The South China Sea, Yang Wu, Jie Cui, Neng Li, Xing Wang, Yi-Hang Wu, Shu-Yang Guo
Rock and Soil Mechanics
Coral sand is the only material for island land reclamation. Due to its special marine biogenesis and porosity structure, coral sand particles are easily crushed at normal level of engineering stress. In this study, drained triaxial shear tests were carried out on coral sand retrieved from a reclamation reef in the South China Sea to study the evolution law of the strength, deformation and particle breakage properties of coral sand with different levels of compaction and confining pressure. The comparative analysis of shear strength index is made between current study and previous investigations. The results show that strain softening and …