Results 61 to 70 of about 2,391,241 (156)

Fracture Distribution Characteristics of Mining-induced Overburden in Thick Coal Seam and Pressure Relief Gas Extraction Technology

Meikuang Anquan, 2020
Aiming at the safety problem of high gas emission in 2303 fully mechanized caving face of Cuijiagou Coal Mine, the evolution law of “three zons” in goaf is studied by using physical similarity simulation and UDEC numerical simulation experiment on the ...
XU Gang, WANG Yunlong, ZHANG Tianjun, PAN Hongyu
doaj   +1 more source

Characteristics of Deformation and Damage of Multi‐Thin Composite Oil Shale Top Plate Under the Influence of Different Factors

Energy Science &Engineering, Volume 14, Issue 4, Page 2118-2136, April 2026.
In this study, the key control mechanism of surrounding rock stability is revealed by theoretical analysis and UDEC‐Trigon numerical simulation method, aiming at the problem that oil shale roof is prone to separation and slip deformation under complex stress.
Jiang Xiao, Yujiang Liu, Yihui Wang, Boyuan Zhang, Yulin Wang, Tongxiaoyu Wang   +5 more
wiley   +1 more source

Failure mechanism of the coal wall at the working face based on an eccentric compression mechanical model

Deep Underground Science and Engineering, Volume 5, Issue 1, Page 127-143, March 2026.
In this study, the nonuniform distribution of the bearing pressure in front of the coal wall has been revealed based on in situ monitoring data and numerical simulation results. Therefore, an eccentric compression mechanical model of the coal wall was established to study the deformation and failure characteristics of a coal wall. The slenderness ratio
Maolin Tian, Jiabao Wang, Changsheng Wang, Shijie Sun, Lijun Han, Qingbin Meng, Sunhao Zhang   +6 more
wiley   +1 more source

Cutting-Caving Ratio Optimization of Fully Mechanized Caving Mining with Large Mining Height of Extremely Thick Coal Seam

, 2019
Serious rib spalling and low recovery rate problems caused by the poor top-coal caving property (TCCP) were investigated in fully mechanized caving mining with large mining height (FMCMLMH) of extremely thick coal seam.
Zhao, Tong, Kaan Yetilmezsoy, Zhang, Xiaoqiang, Tong Zhao, Xiaoqiang Zhang, Wang, Kai, Kai Wang, YETİLMEZSOY, Kaan   +7 more
core   +1 more source

Development Law of Water-Conducting Fracture Zone in the Fully Mechanized Caving Face of Gob-Side Entry Driving: A Case Study

, 2022
This study is aimed at exploring the influence of narrow coal pillars in gob-side entry driving (GSED) on the development height of the water-conducting fracture zone (WCFZ) in the fully mechanized caving face.
Xiao Liu, Xiaofei Jing, Sijiang Wei, Qi Sun, Yi Tan, Weitao Yan, Wenbing Guo, Dawei Yin, Yujiang Zhang, Xiaoqiang Zhang, Han Xu, Xiaoshuang Li   +11 more
core   +1 more source

Failure Mechanism of Asymmetric Large Deformations Under Repeated Mining in Roadways

Energy Science &Engineering, Volume 14, Issue 3, Page 1195-1212, March 2026.
Principal stress‐evolution diagram at different advance positions of 42205 working face. ABSTRACT To address the challenge of controlling severe asymmetrical deformation in roadways subjected to repeated mining, this study (i.e., based on the engineering context of the Buertai Coal Mine) investigated the characteristics of the regional stress field in ...
Ai‐Rong Wang, Tao Peng, Kang Zhou, Chong‐Yu Song   +3 more
wiley   +1 more source

“The Actual Harm Was Worse Than What Was Being Recorded”: Accounts of State Violence and Elite Capture in Fossil Energy Infrastructure Construction in a Sacrifice Zone

Antipode, Volume 58, Issue 2, March 2026.
ABSTRACT Construction of the Mountain Valley Pipeline (MVP), a 42‐in. diameter, 303‐mile fracked gas pipeline through Appalachia, was mandated by the US Congress in the Fiscal Responsibility Act of 2023. The pipeline was completed despite numerous legal and regulatory challenges.
Alaina Kinol
wiley   +1 more source

Electrical and Mechanical Technology Research of Fully Mechanized Coal Caving under Aquifer

, 2011
In this paper, We studied the technical issues of fully mechanized caving under aquifer in Tiebei mine of Zhalainuoer mining company，carry on analysis and studies from the electrical and mechanical equipment to the technical management and gave the ...
Gui Ling Bu, Li Wang, Bai Chao Song
core   +1 more source

Technology Research on the Fourth Panel Mining Large Height Fully-mechanized Caving Mining in Shangwan Coal Mine

, 2015
According to the characteristics of the 1-2 coal seam of Shangwan coal mine 4th panel, this research analyzed the feasibility of sublevel caving hydraulic support in the fully-mechanized mining face through estimation method and numerical simulation ...
Liu Yingjie, Wang Xiaomou
core   +2 more sources

Agricultural System Resilience of Industrial Hemp: An Exploratory Value Web Analysis in the Swabian Alb

GCB Bioenergy, Volume 18, Issue 2, February 2026.
This study assessed the industrial hemp value web resilience in the Swabian Alb, Southern Germany, where regional implementation remains limited despite hemp's bioeconomy potential. Using an indicator framework and stakeholder interviews, the research found the small, fluctuating cultivation area (e.g., 25 ha in 2024) focuses on hemp seed valorisation;
Lena‐Sophie Loew, Moritz von Cossel
wiley   +1 more source