Results 51 to 60 of about 536 (168)

Optimization of Blasting‑Induced Roof Cutting Parameters in Key Stratum and Its Application in Gob‑Side Entry Retention Technology

Energy Science &Engineering, EarlyView.
This study addresses hard roof coal seam conditions by optimizing key stratum blasting‐cutting parameters through theoretical analysis, numerical simulation, and field tests. It proposes calculation methods for blast hole spacing and delay timing based on stress wave theory, controlling roadway deformation within 35 mm, thereby enhancing resource ...
Qiong Liu, Duanxiang Fu, Hongbin Li
wiley   +1 more source

Mechanism and control of large deformation of coal wall in fully mechanized top-coal caving face with weak interlayer

Meikuang Anquan, 2023
Large deformation often occurs in the coal wall with weak interlayer, which affects the normal use of the roadway. Based on the research background of the track channel of 3308 working face in Dongtan Coal Mine, the large deformation characteristics of the side of the roadway with weak interlayer are analyzed by means of field measurement, numerical ...
Fanguang HUI, Xingsong PAN, Xiangyu KONG, Ge WANG, Qiguo SUN, Baolong ZHOU   +5 more
openaire   +1 more source

Numerical Simulation Study on Optimization of Horizontal Sublevel Top‐Coal Caving Mining Technique for Steeply Inclined Extra‐Thick Coal Seam

Energy Science &Engineering, EarlyView.
As the sublevel height increases, the top‐coal recovery amount gradually increases, but both the top‐coal recovery rate and the thickened top‐coal recovery rate show a downward trend, and the decline in the top‐coal recovery rate is gradually increasing. The comparison indicates that the optimal sublevel height is 20 m.
Hongsheng Tu, Dingyi Hao, Wenhong Xiao, Fuhao Jiang, Shikun Xu   +4 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

Theory and key technologies for intelligent fully-mechanized top-coal caving faces of annual production of millions of tons

Meitan kexue jishu
The research focused on addressing various challenges in intelligent top caving theory, intelligent perception and recognition key technology, intelligent caving comprehensive decision-making technology, and remote caving intelligent control technology ...
Bin YU, Yang TAI, Gang XU, Yong LI, Dongyin LI, Shibo WANG, Tiejun KUANG, Ercun MENG   +7 more
doaj   +1 more source

Design of Initial Mining Pressure Relief Scheme for Large‐Size Mining Face: A Case Study

Engineering Reports, Volume 8, Issue 4, April 2026.
The numerical simulation analysis method is used to compare the actual mining face (315 m) with the designed mining face (200 m). The results show that the large mining height working face has larger abutment pressure peak and stress concentration factor than the general mining height working face.
Qinghu Wei, Ming Ji, Biao Huang, Kang Guo   +3 more
wiley   +1 more source

Similar Material Simulation Study on Dam Movement and Deformation Law of Deep Coal Seam Mining Under Dam

Energy Science &Engineering, Volume 14, Issue 4, Page 1808-1821, April 2026.
Aiming at the difficulties in accurately calculating the movement and deformation of small‐sized, deep‐buried dams with a significant height‐to‐depth ratio in deep fully mechanized caving mining, this study proposes to separate the analysis of surface and dam deformation.
Zhang Feng, Qin Hong‐yan, Hu Shou‐bin, Xu Xiao‐yu, Ti Zheng‐yi, Zheng Zhuo‐yan, Yang Shuai, Li Yang   +7 more
wiley   +1 more source

A Case Study of Cyclic Top Coal Weakening Process Based on Highly Tough Coal Seam with Partings

Shock and Vibration, 2021
The top coal weakening process is an effective mean to increase the coal output, reduce the coal resource waste, and promote the sustainable development in a mine.
Zhaopeng Wu, Junhui Wang, Zhijun Wan, Jingyi Cheng, Luchang Xiong, Lizhu Zhao, Xiaogang Liu   +6 more
doaj   +1 more source

Research on the Laws of Destructive Patterns and Control Measures of Overlying Rock in High‐Efficiency Large‐Scale Mining Faces

Energy Science &Engineering, Volume 14, Issue 4, Page 1851-1863, April 2026.
With the advancement of coal mining technology driving the development of working faces toward increased mining heights and extended lengths, the enlargement of face dimensions has led to expanded overlying strata failure zones and intensified ground pressure manifestations. Consequently, traditional methods for determining hydraulic support resistance
Chen Gong, Peilin Gong, Kang Yi, Kaijie Duan, Lizhu Liu, Peng Li   +5 more
wiley   +1 more source

Current status and prospects of surrounding rock control and intelligent coal drawing technology in fully mechanized caving face

Gong-kuang zidonghua
This paper analyzes the current status and existing issues in the control technology of surrounding rock and intelligent top coal caving technology for thick and ultra-thick coal seams in fully mechanized caving faces.
PANG Yihui, GUAN Shufang, JIANG Zhigang, BAI Yun, LI Peng   +4 more
doaj   +1 more source