Results 101 to 110 of about 3,077,132 (240)

Pore-fracture evolution and damage constitutive model of coals under hydro-mechanical coupling

Meitan kexue jishu
The evolution of pore-fracture structures in coal under high stress and high seepage pressure conditions is recognized as the fundamental cause of damage to its physical and mechanical properties. To ensure safe coal mining, the evolution characteristics
Jun WANG, Hongwei ZHOU, Dongjie XUE, Huigui LI, Mingyuan LU, Xiaohai ZHANG, Tingting MAO   +6 more
doaj   +1 more source

Mechanical Damage to Coal and Increased Coal Permeability Caused by Water-Based Ultrasonic Cavitation

Energies
Coalbed methane (CBM), recognized as a sustainable and environmentally friendly energy source, plays a crucial role in mitigating global climate change and advancing low-carbon energy solutions. However, the prevalence of low-permeability coal seams poses a significant challenge to effective CBM extraction.
Xiaoyang Guo, Yijia Liu, Yanfeng Li, Cunbao Deng, Lemei Zhang, Yu Zhang   +5 more
openaire   +2 more sources

Damage Deformation and Acoustic Emission Characteristics of Raw Coal under Different Moisture Contents

, 2020
Coal seam with different moisture contents considerably affects coal mining and gas extraction. The coal seam with moisture contents has unique damage deformation characteristics that differ from dry coal.
Ren, Fengyu, Dong Xia, Huiqiang Wu, Fengyu Ren, Wu, Huiqiang, Xia, Dong   +5 more
core   +1 more source

Experimental and analytical investigation on the coupled elastoplastic damage model of coal-rock: The investigation on damage model of coal-rock

, 2020
In this paper, a novel coupled elastoplastic damage model for coal-rock is proposed to predict the deformation and potential disaster in coal mining. The conditions of small deformation and thermodynamic potential are considered, as well as the coupling ...
Berto, Filippo, Zhang, Jianwei, Shou, Yundong   +2 more
core  

Research on coal-geothermal collaborative exploration system in deep mines [PDF]

Under the trend of deep mining of coal resources, the problem of high temperature heat damage in mines is becoming increasingly serious, the heat source that causes high temperature heat damage in mines is actually sustainably used geothermal energy ...
Yanpeng LI, Wei SU, Xu FENG, Ruiying ZHANG, Liang YANG, Qi LIU   +5 more
core   +1 more source

Experimental Study on Failure Characteristics and Energy Release Evolution of Coal Under Microwave Irradiation

Applied Sciences
In order to reveal the failure characteristics and burst tendency of coal after microwave irradiation, the microstructure damage effect of microwave irradiation on coal was explored.
Chuanhong Ding, Anye Cao, Haonan Liu, Yingyuan Wen, Wenhao Guo, Yang Shi   +5 more
doaj   +1 more source

Seismic Monitoring of Coal-Rock Mass Damage Under Static and Dynamic Loads and Its Application in Coal Burst Forecast

Applied Sciences
Precise monitoring of damage evolution in coal-rock mass during mining emerges as a paramount requirement for developing accurate early warning systems for coal burst hazards.
Changbin Wang, Anye Cao, Yifan Zang, Hui Li, Yang Yue   +4 more
doaj   +1 more source

Dynamics analysis and damage constitute equation of triaxial coal mass under impact load 冲击载荷下三轴煤体动力学分析及损伤本构方程

, 2019
To study the dynamics characteristics of triaxial coal mass under impact load, the triaxial separated hopkinson pressure bar (SHPB) experiment system was built, and the dynamic impact tests were carried out under the random combination of axial static ...
Ju, Yunqiang, Kong, Xiangguo, Wang, Enyuan, Feng, Junjun, He, Xueqiu, Li, Jinduo   +5 more
core   +1 more source

Research in the development of finite element software for creep damage analysis

, 2013
This paper reports the development of finite element software for creep damage analysis. Creep damage deformation and failure of high temperature structure is a serious problem for power generation and it is even more technically demanding under the ...
Xu, Qiang, Liu, Dezheng, Lu, Zhongyu
core  

Deformation mechanism and damage energy evolution of coal body under different gas pressures based on the energy principle

Scientific Reports
With increasing mining depth, the coal pillars of a coal mine will be in a stressful environment characterized by high gas pressures and unidirectional loading.
Yongjiang Yu, Xu Dong, Jiaming Liu, Zhiyuan Song, Zhiqiang Wu, Wenjing Guo   +5 more
doaj   +1 more source