Results 71 to 80 of about 934 (182)

Asymmetric deformation mechanism of mining roadways and unloading and supporting integrated full-space support technology

Meikuang Anquan
Aiming at the problems such as asymmetric deformation of deep close distance coal seams mining roadway, taking the close distance coal seam dynamic pressure roadways of 1640 and 1620 railway transportation lanes in a coal mine as the engineering ...
Bo ZHOU, Ze ZHOU, Youlin XU, Peng LI, Chuanjiu ZHANG, Peng LI, Xuanliang LI   +6 more
doaj   +1 more source

Study on the law of stress distribution in the presence of remaining coal pillar in a close-distance coal seam and the reasonable location of the roadway

Scientific Reports
Abstract In order to reveal the impact of remaining coal pillar on roadway layout of the lower seam after the upper part of the close coal seam is reversely mined, theoretical analysis and numerical simulation are conducted in this paper. With the roadway to be excavated in a mine located in Shanxi as the research object, theoretical analysis ...
Xiao-Xiang Wei, Zhi-Qiang Zhao, Yin-Wei Wang, Xiao-He Wang, Zi-Long Hui   +4 more
openaire   +3 more sources

Experimental and smoothed particle hydrodynamics‐finite element method simulation investigation of synergistic erosion mechanism of gangue‐based abrasive water jets

Deep Underground Science and Engineering, EarlyView.
This study proposes an eco‐friendly coal permeability enhancement technique by utilizing mine waste gangue as an abrasive in high‐pressure water jets. Integrating erosion experiments with smoothed particle hydrodynamics‐finite element method coupled simulations, the research study elucidates the flow field dynamics and a nonlinear solid–liquid ...
Qingxiang Wang, Jiaxu Tang, Qiheng Ren, Ding Wang, Tong Wang   +4 more
wiley   +1 more source

Mine Pressure Manifestation Under the Coupled Disturbance of Mining Movement and Impact in Close-Range Coal Seams

Applied Sciences
To address severe mine pressure disasters induced by the coupling of mining-induced dynamic stress and impact disturbance during close-distance coal seam mining, this paper takes the No. 8 and No.
Chuanbo Hao, Qiang Ren, Guoqing Wei, Yonglong Zan, Gang Liu   +4 more
doaj   +1 more source

Integrated numerical simulation and source‐sink matching methodology for Basin‐Wide CO2 storage assessment in depleted reservoirs: A Cambay Basin case study

Deep Underground Science and Engineering, EarlyView.
This study presents an integrated workflow to evaluate secure and large‐scale CO2 storage in depleted oil reservoirs of the Cambay Basin, India. Industrial CO2 sources are systematically matched with mature oil fields using a quantitative source–sink framework to minimize transport distance and cost.
Bhaskarjyoti Khanikar
wiley   +1 more source

Study on the Migration Laws of Overlying Strata in Backfill Mining of Close-Distance Coal Seams

Processes
To clarify the migration characteristics of overlying strata during backfill mining of close-distance coal seams, the 3306 working face of Chaili Coal Mine was taken as the engineering background, and similar-material simulation, fracture-fractal analysis, and FLAC3D numerical simulation were carried out under an 85% backfill ratio.
Peisen Zhang, Zelin Xu, Xingang Deng, Yong Zhang, Xin Hu   +4 more
openaire   +1 more source

Mechanism of “seesaw‐type” rock burst in coal seam mining beneath mountainous areas

Deep Underground Science and Engineering, EarlyView.
This study reveals the mechanism of “seesaw‐type” rock bursts during coal mining beneath mountainous areas. The advancing working face induces nonuniform fracturing of the overburden. The detached mountain mass then undergoes a seesaw‐type rotational movement around a shifting pivot, driving the primary fracture through a characteristic “open‐close ...
Chao Zhou, Xueqiu He, Zhenlei Li, Ping Wang, Dazhao Song, Fuxing Jiang, Shan Yin, Anliang Lü, Menghan Wei, Taoping Zhong   +9 more
wiley   +1 more source

Study on overlying rock movement and mine pressure behavior in shallow-buried close coal multi-seam mining

Alexandria Engineering Journal
In order to reveal the failure morphology and mine pressure behavior of overlying strata during shallow buried close multi-coal seam mining, this research takes the Shenmu Zhangjiamao mining area as the engineering background, the study of overlying rock
Shaoping Hu, Tianbiao Yu
doaj   +1 more source

Exponentially‐constrained Gaussian mixture model for quantifying vertical development of water‐conducting fracture zones in lithologically stratified mining roofs

Deep Underground Science and Engineering, EarlyView.
This study proposes an exponentially‐constrained Gaussian mixture model (EcGMM) to quantify vertical fracture heterogeneity in stratified roof strata. The model integrates a piecewise exponential decay term capturing global stress dissipation with Gaussian components representing localized fracture intensification at lithological interfaces.
Huiqing Yuan, Zhimin Xu, Weixiao Chen, Chenghang Zhang, Shijie Xiong, Yajun Sun   +5 more
wiley   +1 more source

Carbon Anodes for Low‐Temperature Nonaqueous Alkali Metal‐Ion Batteries

EcoEnergy, EarlyView.
This review summarizes recent progress in carbon anodes for low‐temperature nonaqueous alkali‐metal ion batteries. Fundamental thermodynamic and kinetic limitations are examined, alongside a systematic discussion of graphite, hard carbon, and emerging carbon architectures.
Zhichun Miao, Dandan Yu, Guojie Liu, Yuyang Qin, Jingyun Mou, Wenlong Song, Lu Shi, Zengqin Xiao, Xin Yuan, Huayu Chen, Laishun Qin, Da Chen   +11 more
wiley   +1 more source