Results 101 to 110 of about 765,751 (280)

Mechanism and disaster control new technology of strong ground pressure manifestation in ultra‐large mining face

Deep Underground Science and Engineering, EarlyView.
In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu, Manchao He, Jun Yang, Yubing Gao, Qiang Fu, Qing Ma, Yajun Wang   +6 more
wiley   +1 more source

Static and dynamic mechanical properties and macro-micro coalburst prevention mechanisms of water-immersed coal

Meitan kexue jishu
Hydration weakens the macro-mesoscopic mechanical properties of burst-prone coal, enhances the stress wave energy reflection-refraction capability of the coal, and reduces the risk of impact energy release in water-injected roadways.
Aiwen WANG, Dewei FAN, Yishan PAN, Lianpeng DAI, Chaoran LI, Kailei YANG, Wei ZHANG, Xingfa LIU, Hanqi LIU, Chuang LU   +9 more
doaj   +1 more source

Dynamic geo‐hydrogeological monitoring‐driven situational awareness for real‐time floor water inrush risk prediction in deep mining

Deep Underground Science and Engineering, EarlyView.
The fused data extracted from the distributed monitoring system as the data basis, combined with dynamic geological data, are imported into a deep learning model. As the geological conditions of mining and excavation change, the risk of water inrush at the working face is retrieved in real time.
Yongjie Li, Huiyong Yin, Fangying Dong, Tao Wu, Chao Zhang   +4 more
wiley   +1 more source

Coal pillar burst mechanism and prevention based on local mine stiffness (LMS) criterion [PDF]

The frequent occurrence of coal burst seriously threatens the safe and efficient recovery of coal resources. The research on the mechanism of coal burst is the basis of prediction and disaster prevention.
Xiaoqing WANG, Chuang LU, Shuwen CAO, Lei YANG, Xiangyuan PENG, Zhiguo LU, Fuqiang GAO, Jinfu LOU   +7 more
core   +1 more source

Occurrence Mechanism and Prevention Technology of Rock Burst in Middle Layer Mining of Steeply Inclined Thick Coal Seam

, 2020
In view of the frequent occurrence of rock burst in the middle layer of the steeply inclined thick coal seam in Dongxia Coal Mine, based on the three-dimensional microseismic monitoring network and the seismic source space precise positioning method, the
DING Xiaomin, NIU Jiasheng, XUE Zaijun, GONG Siyuan, SHEN Wei, LIU Jianxiao, YU Lei
core   +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

Coal burst risk monitoring method based on the drilling powder of destressing drilling in coal seam and its application [PDF]

The drilling powder monitoring method is one commonly used method for coal burst risk evaluation in coal mines. The construction method of large-diameter destressing drilling is similar to that of the drilling powder monitoring method.
Wentao REN, Tongbin ZHAO, Jiuguo GAO, Zhigang ZHAO, Yanchun YIN, Qingzhi ZHANG   +5 more
core   +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

Solar Fuels Via Methane Valorization: Thermochemical Pathways, Unified Metrics, and Techno‐Economic Perspectives

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A first‐of‐its‐kind review benchmarks three solar methane valorization pathways with unified performance metrics for clean fuel production. Meeting global climate targets and sustainable energy demands requires carbon‐neutral fuels and innovative conversion pathways.
Muhammad Abdulmoez, Amjad Othman, Majid Linjawi, Amro Al‐Qutub   +3 more
wiley   +1 more source

Burst Failure Characteristics and Energy Evolution Law of Coal with Prefabricated Cracks at Different Angles

Shock and Vibration
In order to study the influence of fissures on the burst tendency of coal, the test and numerical simulation of the burst tendency of coal with different burst angles were carried out.
Xiufeng Zhang, Yueyong Han, Yang Chen, Xingyin Ma, Xinrong Zhang, Cao Man, Yanchun Yin   +6 more
doaj   +1 more source