Results 1 to 10 of about 2,475 (118)

Study on the influence of fracture geometric characteristics on the microscopic crack propagation and energy release mechanism in granite. [PDF]

Sci Rep
Rockburst is a major safety risk in deep tunnel engineering, closely related to the propagation of fractures and energy release in rock masses. Therefore, a thorough understanding of the laws governing fracture propagation, energy release mechanisms, and
Qin T, Li L, Nie C, Zhou J, Liu Q, Cheng L.   +5 more
europepmc   +2 more sources

Effects of high temperature and thermal cycles on fracture surface's roughness of granite: An insight on 3D morphology

Journal of Rock Mechanics and Geotechnical Engineering
The roughness of the fracture surface directly affects the strength, deformation, and permeability of the surrounding rock in deep underground engineering.
Kui Zhao, Xiaozhao Li
exaly   +3 more sources

Thermal effects on fracture toughness of cracked straight-through Brazilian disk green sandstone and granite

Journal of Rock Mechanics and Geotechnical Engineering, 2022
Cracked straight-through Brazilian disc (CSTBD) samples prepared using two rock materials were used for thermal treatment from room temperature to 700 °C.
Lei Zhou, Weiting Gao, Liyuan Yu, Zheming Zhu, Jianxing Chen, Xingkai Wang   +5 more
doaj   +1 more source

The Size Effect and Microstructure Changes of Granite after Heat Treatment

Advances in Materials Science and Engineering, 2021
High temperature can change the mechanical properties of granite, with significant nonlinear characteristics, and at the same time change its microstructure.
Zhongping Guo, Jian Li, Yongqi Song, Chengqian He, Fuyu Zhang   +4 more
doaj   +1 more source

Fracture behavior and thermal cracking evolution law of granite specimens after high-temperature treatment

Yantu gongcheng xuebao, 2023
During the exploitation of deep geothermal energy, the thermal rocks will cool with different cooling rates. A comprehensive understanding of mechanical behavior of the thermal-treated rock is very important for deep underground engineering. However, the
HUANG Yanhua 1, 2, TAO Ran 1, CHEN Xiao 3, LUO Yiming 1, HAN Yuanyuan 1
doaj   +1 more source

Prediction model and variation law of P-wave velocity of single fracture granite in an underground water-sealed storage cavern

地质科技通报, 2023
Objective Revealing the variation behavior of P-wave velocity in fractured rock masses is of great significance for the quality grading and stability evaluation of rock masses for engineering purposes. Methods The nonfilling single fracture granite of an
Yangbing Cao, Yang Wu, Peng Zhang, Zhihao Jiang, Siyi Zhang, Zhenping Huang   +5 more
doaj   +1 more source

Study on Deterioration Effect of Dynamic Mechanical Properties of Granite at Subzero Temperatures

Geofluids, 2022
In the present work, through the dynamic impact test of frozen granite, the effect of temperature on the dynamic mechanical performances of granite at high strain rates were investigated.
Yang Yang, Jianguo Wang
doaj   +1 more source

Influence of Confining Pressure Unloading Rate on the Strength Characteristics and Fracture Process of Granite Using Lab Tests

Advances in Materials Science and Engineering, 2021
In order to study the mechanical behaviors and fracture process properties of granite under confining pressure unloading with constant axial pressure, RMT-150B rock mechanics test system and acoustic emission detector were used to study the mechanical ...
Jiaqi Guo, Pengfei Liu, Junqi Fan, Xiaoyan Shi, Xin Huang   +4 more
doaj   +1 more source

Study on mechanical properties and damage characteristics of granite under thermal shock based on CT scanning

Meitan kexue jishu, 2023
During the exploitation of deep geothermal resources, the thermal fractures of high-temperature rocks are usually induced by the impact of low-temperature fluids to improve the permeability of reservoir rocks.
Jiamin WANG, Shouguang WANG, Xiangshang LI, Mohua BU, Zhaolong LUAN, Peng ZHANG   +5 more
doaj   +1 more source

Experimental Study on the Fracture Toughness of Granite Affected by Coupled Mechanical-Thermo

Lithosphere, 2022
Hot dry rock geothermal energy is deep geological energy. Its ability to resist fracture is an important basis for effective reconstruction and scientific evaluation of the stability of geothermal reservoirs.
Gan Feng, Chen-Bo Liu, Ji-Lan Wang, Ye Tao, Zhi-Pan Duan, Wei-Ning Xiang   +5 more
doaj   +1 more source