Results 61 to 70 of about 5,124 (199)

Study on Surrounding Rock Control Technology of Gob‐Gob Roadway Driven by Fully Mechanized Caving With Large Mining Height and Small Coal Pillar in Extra Thick Coal Seam

Energy Science & Engineering
To investigate the ground pressure control in gob‐side roadways with small coal pillars in deep and high fully mechanized caving faces, a study was conducted based on the return airway of the 2‐2 coal seam in the 130203 face of Zao Quan Coal Mine of Guo ...
Linjun Peng, Dong Chen, Weidong Liu, Chengyuan Peng, Fenghua Cai, Dazhi Hui, Huanhuan Yan   +6 more
semanticscholar   +1 more source

Research on the intelligent coordinated top-coal caving model and key technologies in extra-thick coal seams

河南理工大学学报. 自然科学版
ObjectivesFully mechanized top-coal caving is a safe and efficient mining method for extra-thick coal seams. However， the complexity of the caving environment， the challenges in coordinating mining and caving， and the numerous factors influencing caving ...
LI Dongyin, WANG Zuguang, WANG Shen, LI Huamin, PENG Weiping, LI Hongbin, ZHANG Guopeng, ZHANG Xuhe   +7 more
doaj   +1 more source

Mine Pressure Observation and Support Adaptability Analysis of Fully Mechanized Caving Face in Soft Rock Mine

IOP Conference Series: Earth and Environmental Science, 2019
Abstract According to the data monitored by the top pressure gauge of the I0128204 fully mechanized caving face in Yannan Mine, the statistical analysis method is used to analyze the adaptability of the hydraulic support. The results show that the ZFS6400-15.7/31 bracket support strength is suitable for soft rock fully mechanized caving.
Li Wang, Zhao Guibin, Song Baichao
openaire   +1 more source

Study on Failure Law of Mining Process of Narrow Coal Pillars in Fully Mechanized Caving Roadway [PDF]

E3S Web of Conferences, 2019
In order to determine the damage law of narrow coal pillars in the roadway along the goaf, taking the 4-5(06) working face of a mine in Xinjiang as the research object, the 3D finite difference software FLAC3D is used to analyse the stress and displacement distribution characteristics of narrow coal pillars in the mining process.
Ren Haifeng, Zhao Xuewen, Cao Peng
openaire   +2 more sources

Study on Surrounding Rock Control of Withdrawal Space in Fully Mechanized Caving Mining of a 19 m Extra-Thick Coal Seam

Applied Sciences
The section span of the withdrawal space of fully mechanized top coal caving in an extra-thick coal seam is large, and with the gradual withdrawal of the hydraulic support, a series of strong dynamic pressure disasters occur in the withdrawal space, and ...
Dongdong Chen, Zhiqiang Wang, Shuaishuai Yue, S. Xie, F. He, Chunyang Tian, Zaisheng Jiang, Dawei Liang, Bohao Qi   +8 more
semanticscholar   +1 more source

Geochemical Characterization and Prediction of Water Accumulation in the Goaf under Extra-Thick Fully Mechanized Top-Coal-Caving Mining

Water
In multi-seam coal mining, the water accumulation in the goaf of the upper coal seam will seriously threaten the safety of the lower coal-seam recovery.
Jianghong Wang, Hongwei Wang, Shaobo Yin, Qingfa Liao, Qi-Ping Ju, Kai Chen   +5 more
semanticscholar   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

Deep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu, Wei Qiao, Xianggang Cheng, Xiangsheng Meng, Peichao Feng   +4 more
wiley   +1 more source

Study on Caving Property of Top Coal in Fully Mechanized Caving Face with Double Inclined and Large Dip Angle

Meikuang Anquan, 2020
In order to study the influence of different incline angles on the shape of top coal caving body, and the influence of different strike angles and different caving styles on the top coal caving rate of large angle fully mechanized top coal caving face ...
ZHANG Bei, YANG Yuanzhong
doaj   +1 more source

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

Interpretable Tree‐Based Models for Predicting Short‐Term Rockburst Risk Considering Multiple Factors

Energy Science &Engineering, Volume 14, Issue 6, Page 2941-2960, June 2026.
Interpretable tree‐based models integrate microseismic, geological, and mining indicators to predict short‐term rockburst risk. SHAP analysis reveals the dominant role of energy‐related features and clarifies nonlinear factor interactions, enabling transparent and reliable early‐warning in deep coal mines.
Shuai Chen, Linming Dou, Atao Li, Wu Cai, Lei Zhang   +4 more
wiley   +1 more source