Results 31 to 40 of about 53,166 (212)

Multi-scale analysis of stress-corrosion failure and anti-corrosion strategies for anchor bolts in Tashan coal mine

Scientific Reports
Frequent failures of roadway anchor bolts in the roof-dripping zones of the Tashan coal mine endanger roadway stability and safety. To clarify the stress-corrosion cracking (SCC) mechanism and identify mitigation strategies, we combined water-chemistry ...
Lei Wang, Zhongwei Li, Yukai Fu, Xiang Xu, Xiaowei Chu   +4 more
doaj   +1 more source

Study on Overburden Structure Characteristics and Induced Scour Mechanisms of Horizontal Sublevel Mining in Steep and Extra-Thick Coal Seams [PDF]

, 2022
Shiguo Ge, Chongliang Yuan, Qingliang Chang, Yongzhong Wang, Biao Zhang   +4 more
openalex   +1 more source

Synthesis and Properties of Moisture-Crosslinkable Poly(Urethane-Urea) With Intrinsic Flame Retardancy

Advances in Polymer Technology
To improve the deteriorated performance caused by CO2 release during the curing process of traditional moisture-crosslinked polyurethane or polyurea and poor flame retardancy, this work realized an effective in situ crosslinking technique triggered by ...
Zongke He, Pengfei Jiang, Ziyue Wang, Yangfeng Gao, Jichang Guo, Yaozhong Wei, Chang Liu   +6 more
doaj   +1 more source

Experimental study on mechanical and fracture-seepage characteristics of sandstone under hydro-mechanical coupling

Meikuang Anquan
In order to explore the fluid-solid coupling feedback characteristics of rock under the action of hydro-mechanical coupling, the triaxial and pore water pressure loading tests of saturated sandstone were carried out by using the rock mechanics ...
Jiawei LI, Yujun ZHANG, Jie XIAO, Youwei LI, Zhiwei ZHANG   +4 more
doaj   +1 more source

Grouting theories and technologies for the reinforcement of fractured rocks surrounding deep roadways

Deep Underground Science and Engineering, 2023
Grouting is an effective method to improve the integrity and stability of fractured rocks that surround deep roadways. After years of research and practice, various theories and a complete set of grouting technologies for deep roadways with fractured ...
Hongpu Kang, Wenzhou Li, Fuqiang Gao, Jianwei Yang   +3 more
doaj   +1 more source

Development and application of coal burst experiment system based on local mine stiffness theory

Meitan xuebao, 2023
The loading mine stiffness and the post-peak stiffness of a coal pillar are important factors affecting the occurrence of coal bursts. In order to systematically study the mechanism of coal bursts and pillar bursts based on local mine stiffness theory, a
Fuqiang GAO, Guiyang YUAN, Jinfu LOU, Zhiguo LU, Jianzhong LI   +4 more
doaj   +1 more source

Investigation of nanoindentation for evaluating the cyclic loading-unloading mechanical properties of heterogeneous coal

Rock Mechanics Bulletin
Exploring the meso-mechanical response of heterogeneous coal is crucial for understanding its macro mechanical behavior in coal mining, CO2 storage, and coal bed methane production.
YuKai Fu, Yongzheng Wu, Sifeng He, Penghe Zhou, Junchen Li, Jie He   +5 more
doaj   +1 more source

Failure Characteristics and Deformation Control Methods of the Bottom Drum of Roadways during Repeated Mining of Multiple Coal Seams

Geofluids, 2022
As the problems of serious bottom drum and roadway broken surrounding rock are influenced by repeated mining in multiple coal seams, the factors affecting the surrounding rock deformation of a +980 m roadway in Faer coal mine by analyzing the rock ...
Changzheng Zhao, Shenggen Cao, Shuyu Du, Chiyuan Che, Xingyao Wang   +4 more
doaj   +1 more source

Case study of hydraulic fracturing for coal burst risk mitigation

International Journal of Coal Science & Technology
Coal bursts pose significant safety and operational challenges in deep mining environments, necessitating effective mitigation strategies to address high-stress concentrations and dynamic failure risks.
Hongpu Kang, Yongxue Xia, Meihua Feng, Chuang Lu, Fuqiang Gao   +4 more
doaj   +1 more source

Theory of coal wall spalling and cooperative control by “support-destressing” in 10 m ultra-large mining height working face

Meitan xuebao
Coal wall spalling is one of the main factors restricting the safe production of 10 m ultra-large mining height working face.In response to the problem of unclear mechanism of coal wall spalling and difficult control of surrounding rock in the 10 m ultra-
Jiangbin LIU, Zhizeng HUANG, Qianjin LIU, Zhen ZHANG, Cundi HAN, Xingyu LIN, Rongshan MA, Zhen ZHAO   +7 more
doaj   +1 more source