Results 31 to 40 of about 1,327 (178)

Study of the multi-index coupling forecasting model of coal and gas outburst and its application

工程科学学报, 2018
Coal and gas outburst seriously threatens the safety of underground coal mining. With the increase in coal mining depth, the geological conditions of coal mines become complicated, which adversely affects the safety of coal mining production.
ZHANG You-yi, CUI Jin-lei, JIAO Xiang-dong   +2 more
doaj   +1 more source

Recent advances on mechanism and prevention technology of coal and gas outburst disasters in China

Meitan kexue jishu
Coal and gas outburst is a kind of mine dynamic disaster that occurs in underground coal mines, often causing mass casualties and seriously restricting the safe and efficient production of coal mines.
Chaojun FAN, Xiaofeng JIANG, Ting LIU, Mingkun LUO, Jun HAN, Tianwei LAN, Lei YANG, Ce JIA   +7 more
doaj   +1 more source

Joint ground and underground gas extraction mode and its key technology for outburst coal seam group

Meitan xuebao, 2023
China’s coal seams are characterized by high ground stress, low permeability, high gas pressure, and high gas content, and their gas outburst hazards are serious. Therefore, some effective gas extraction measures must be taken for coal seams.
Yongjiang ZHANG, Quanle ZOU, Huiming YANG, Zihan CHEN, Jianjun CAO, Zhiheng CHENG   +5 more
doaj   +1 more source

Dynamic cracking properties and generating conditions of coal under rapid gas release

Deep Underground Science and Engineering, EarlyView.
Gas release tests revealed that crack initiation and propagation are jointly controlled by initial crack length, residual strength, and gas release velocity. A new outburst risk coefficient was thus developed from a fracture mechanics perspective, offering a novel predictive approach.
Bing Zhang, Hanpeng Wang, Liang Yuan, Guofeng Yu, Wei Wang, Benliang Chen, Bo Ren   +6 more
wiley   +1 more source

Study on the impact force evolution law of coal and gas outburst under high ground stress

Meitan kexue jishu, 2023
With the increase of mining depth and intensity, the dynamic disaster of coal and gas outburst was frequent. The disaster-causing mechanism of impact force has become the main direction of current research.
Jupeng TANG, Lingran REN, Yishan PAN, Xin ZHANG, Honghao YU   +4 more
doaj   +1 more source

Risk prediction of coal and gas outburst

Gong-kuang zidonghua, 2022
In order to solve the problems of low accuracy and slow response speed of existing support vector machine (SVM)-based coal and gas outburst prediction methods, a risk prediction method of coal and gas outburst based on improved grey wolf optimizer (IGWO) optimized SVM is proposed. The influence degree of each influencing factor on coal and gas outburst
LI Yan, NAN Xinyuan, LIN Wanke
openaire   +1 more source

Study on Early Warning System of Coal and Gas Outburst [PDF]

The Open Electrical & Electronic Engineering Journal, 2013
Coal and gas outburst is an extremely complex and serious gas dynamic phenomenon. Therefore, building an early warning system based on computer system, safety monitoring systems of coal mines and local area network is a precondition for effectively preventing coal and gas outburst.
Xiang Lan Liu, Xu Sheng Zhao, Gui Gang Dong   +2 more
openaire   +1 more source

Advances in vital‐sign prediction and early‐warning models for underground coal mine workers integrating environmental factors

Deep Underground Science and Engineering, EarlyView.
This review synthesizes advances in predicting miners' vital signs by integrating environmental monitoring (dust, temperature, and gas) with physiological data. It highlights multi‐source data fusion techniques and early‐warning models for enhanced occupational safety in underground coal mines.
Junji Zhu, Dawei Cui, Yingjie Liu, Yuntao Liang, Yue Zhang   +4 more
wiley   +1 more source

Energy principle of simulation experiments on coal and gas outburst

Meitan xuebao, 2023
Coal and gas outburst is an extremely destructive gas dynamic disaster in mines. Since such dynamic disasters are usually difficult to observe directly, physical similarity simulation of coal and gas outburst has become an important method for collecting
Yuanping CHENG, Yang LEI, Sijie YANG
doaj   +1 more source

The Effect of a Tectonic Stress Field on Coal and Gas Outbursts [PDF]

The Scientific World Journal, 2014
Coal and gas outbursts have always been a serious threat to the safe and efficient mining of coal resources. Ground stress (especially the tectonic stress) has a notable effect on the occurrence and distribution of outbursts in the field practice. A numerical model considering the effect of coal gas was established to analyze the outburst danger from ...
Fenghua An, Yuanping Cheng
openaire   +3 more sources