Results 111 to 120 of about 765,751 (280)

Creep instability rock burst mechanism of high-stress isolated coal immersed in water

Based on the rock burst occurrence of the south water sump connecting roadway in the seventh mining area of Zhaolou Coal Mine, the mechanism of creep instability rock burst of high stress isolated coal immersed in water was studied by means of ...
Sitao ZHU, Leilei ZHONG, Lue FANG, Guanglin PENG, Shidong LI, Guangfei ZHOU, Tengfei YUAN, Fangfang WANG, Zhen KONG   +8 more
core   +1 more source

Research on Optimal Width of Coal Pillars in Both Sides of Abandoned Mining Areas and Tunnel Control Technology

Energy Science &Engineering, EarlyView.
This study primarily investigates the optimal width for coal pillar retention in both sides of the worked‐out face section. Taking the 42201 haulage roadway of the 42201 working face at Shengxin Coal Mine as the primary research target, it analyses the optimum width for coal pillar retention through theoretical calculations, numerical simulations, and ...
Shuaifeng Yin, Kanglei Han, En Wang, Yitao Yan, Xubo Zhao   +4 more
wiley   +1 more source

Study on Monitoring Rock Burst through Drill Pipe Torque

Shock and Vibration, 2015
This paper presents a new method to identify the danger of rock burst from the response of drill pipe torque during drilling process to overcome many defects of the conventional volume of drilled coal rubble method.
Zhonghua Li, Liyuan Zhu, Wanlei Yin, Yanfang Song   +3 more
doaj   +1 more source

How to realize safe-efficient-intelligent mining of rock burst coal seam

How to realize safe and efficient intelligent mining of rock burst coal seam is an important industrial technical problem. This paper systematically analyzes the distribution characteristics, mining status and development trend of rock burst mine in ...
Yishan PAN, Guofa WANG, Yonghua HE, Yihui PANG, Wenyan WEI, Shankun ZHAO   +5 more
core   +1 more source

Coal burst induced by rock wedge parting slip: a case study in Zhaolou coal mine

, 2017
Rock wedge parting is an important factor that can induce coal burst. In this study, a physical model for the stick-slip model was developed to investigate coal burst induced by rock wedge parting.
Karakus, M., Guangjian Liu, Liu, G., Zonglong Mu, Mu, Z., Murat Karakus   +5 more
core   +1 more source

Analysis and Optimization of Early‐Warning Indicators for Impact Critical Stress in Deep Soft Coal Seams

Energy Science &Engineering, EarlyView.
This study determines the impact critical stress early‐warning indicators for deep soft coal seams: 18 MPa (shallow holes), 20 MPa (deep holes), and 3 MPa/d daily stress change rate, via theoretical, experimental and simulation methods. ABSTRACT The accurate determination of early‐warning indicators for critical impact stress in deep soft coal seams is
Haichen Yin, Xiufeng Zhang, Atao Li, Yanliang Wang, Long Yuan, Chaohong Shi, Yang Chen, Caiping Lu, Liangjin Jiang   +8 more
wiley   +1 more source

Mechanism and Prevention of Rock Burst Induced by Multi-key Layer Fracture of High Stress Coal Pillar

, 2020
Aiming at the technical problem of preventing and controlling the large section coal pillar rock burst of high-strength mining under the control condition of overlying multi-key strata, the mechanism and prevention and control methods of coal pillar rock
XIA Fangqian, QU Xiaocheng, WEI Quande, WANG Yanliang, KONG He
core   +1 more source

Iron Energy Carrier: Experimental Characterisation, Combustion Diagnostic and Benchmarking with Other Clean Metal Fuels

Energy Science &Engineering, EarlyView.
This study investigates how iron particles burn across a wide size range, revealing late‐stage nanoparticle release and a previously unrecognised shift in combustion behaviour near 118 µm. High‐speed imaging, PMT diagnostics and SEM analyses have been conducted.
Zakaria Mansouri
wiley   +1 more source

Evidence From Microscopy and U–Pb Geochronology as a Clue to the Influence of the Cretaceous Magmatism in the Diagenesis of Pre‐Salt Carbonate Reservoirs in the Santos Basin (Brazil)

Geological Journal, EarlyView.
Carbonates from Santos Basin revealed U–Pb ages correlated with basalt ages (A), suggesting that they were formed during magmatic events. These events placed hot CO2 in the reservoir, which, when mixed with carbonate‐rich cold water (B), led to thermal convection, enabling the formation of the U contained in the carbonates.
Marco António Ruivo de Castro e Brito, Cristiano Leite Sombra, Davy Raeder Brandão, Cleverson Guizan Silva, Sidney Luiz de Matos Mello, Eugênio Vaz dos Santos Neto, Rui Jorge Fernandes Baptista, Ramsés Capilla, Luiz Antônio Pierantoni Gambôa   +8 more
wiley   +1 more source

Fractures characterization in mining field considering seismic location accuracy and its application on pre-warning coal burst hazards

Meitan kexue jishu
Due to high-intensity mining and complex geological conditions, frequent occurrence of rock burst disasters in deep coal mines in China is posing serious threats to mine safety and efficiency.
Anye CAO, Changbin WANG, Xu YANG, Bing WANG, Ning ZHANG, Weiwei ZHAO   +5 more
doaj   +1 more source