Results 51 to 60 of about 13,620,505 (264)

Pressure Control Technology at the Hard Thick Sandstone Roof in an Island Mining Face with a Large Mining Height [PDF]

, 2020
Fracture of a critical stratum on a coal seam roof may cause strong strata pressure behaviours. In particular, a large-scale sudden fracture of the critical stratum, which is formed by hard thick sandstones on a mining face with a large mining height ...
Min Tu, Tu, Min, Fu*, Baojie, Qingchong Zhao, Baojie Fu*, Zhao, Qingchong   +5 more
core   +1 more source

Numerical simulation study on the evolution characteristics of the stress induced by mining in deep adjacent working faces

Geoenvironmental Disasters, 2023
Background The mining-induced stress in the surrounding rock after coal seam mining is the primary cause of damage and failure of the surrounding rock in the mining area.
Shoulong Ma, Mingwei Zhang, Lu Ma, Zhuangcai Tian, Xue Li, Zhenhao Su   +5 more
doaj   +1 more source

Plastic zone distribution and main controlling factors analysis of large mining height face in steeply dipping coal seam [PDF]

, 2023
Coal wall of large mining height face in steeply dipping coal seam has large free height, wide free movement space and poor self-stabilization balance, coal wall is not an isolated body in the face, it can form a load-bearing structure with the ...
Yongping WU, Panshi XIE, Hao ZHANG
core   +1 more source

Present situation of support technology and equipment in fully mechanized mining face with supermining height

Meikuang Anquan
One-time full-thickness mining with ultra-high mining height has the characteristics of high mining efficiency and high resource recovery rate. In order to explore the further breakthrough of ultra-high mining height fully mechanized mining technology ...
Huijun HAN, Guofa WANG, Mingzhong LI, Jinhu ZHANG, Yanpeng LI   +4 more
doaj   +1 more source

Overlying rock movement and mining pressure in a fully mechanized caving face with a large dip angle

Frontiers in Earth Science, 2022
The overlying rock movement and mining pressure in the fully mechanized caving face with a large dip angle were systematically investigated according to theoretical analysis, similar material simulation, numerical calculation, and field monitoring.
Ying Chen, Ying Chen, Zhiwen Wang, Qianjia Hui, Zhijie Zhu, Dequan Sun, Dequan Sun, Yang Chen, Xiufeng Zhang, Zhaoyi Wang, Jian Wang, Jian Zhao   +11 more
doaj   +1 more source

Research on overburden structure of large mining height working face in shallow seam

Meitan xuebao
Based on the overburden conditions of Shendong and Northern Shaanxi coal bases, through the statistical analysis of the measured roof weighting characteristics and overburden caving height in large mining height working faces, combined with physical ...
Qingxiang HUANG, Jinlong GAO, Yehao WEI
doaj   +1 more source

Analysis of Influencing Factors and Prevention of Coal Wall Deformation and Failure of Coal Wall in Caving Face with Large Mining Height: Case Study

Applied Sciences, 2023
The coal walls in a caving face with a tall mining height are prone to rib spalling, which leads to the phased cessation of the mining of the working face, causes heavy losses, and endangers the safety of underground workers.
Guohao Meng, Jixiong Zhang, Chong-jing Wang, N. Zhou, Meng Li   +4 more
semanticscholar   +1 more source

Field Report from Collaborative Research Center 1625: Heterogeneous Research Data Management Using Ontology Representations

Advanced Engineering Materials, EarlyView.
A unified research data management framework for heterogeneous materials data is presented. The system integrates multimodal datasets using ontologies and knowledge graphs, enabling interoperability and FAIR (findable, accessible, interoperable, reusable) data principles. By linking data across scales and workflows, it supports reproducible, Artifitial
Doaa Mohamed, Samuel García Vázquez, Behnam Mardani, Victor Dudarev, Alfred Ludwig, Maribel Acosta, Markus Stricker   +6 more
wiley   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

Advanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch, Maximilian Holland, Klaus Drechsler, Johannes Schilp   +3 more
wiley   +1 more source

Analysis of Key Safety Factors Mining Large Section Working Face to Steep Seams

, 2011
As a scientific method, the mining method of horizontal section top coal caving [1-3] has been widely used at Urumqi coal mine in Xinjiang autonomous region.
Ping Wu Shi, Yu Cheng Xia, Xiao Ping Shao   +2 more
core   +1 more source