Results 41 to 50 of about 10,848,381 (289)

New Technology of Pressure Relief Control in Soft Coal Roadways with Deep, Violent Mining and Large Deformation: A Key Study

open access: yesEnergies, 2022
Previous studies have shown that the influence of deep dynamic pressure on the surrounding rock control of a coal roadway is one of the difficulties in mine roadway support.
Shengrong Xie   +6 more
doaj   +1 more source

Research on the stability control of surrounding rock in the roadway with dynamic pressure and high slope

open access: yesGong-kuang zidonghua, 2021
The roadway with dynamic pressure and high slope refers to the roadway which is seriously affected by dynamic pressure and has a high slope. This type of roadway not only experiences disturbances in the excavation process, but also has to experience the ...
SHEN Binxue   +5 more
doaj   +1 more source

Buckling failure of highly-stressed hard rocks surrounding deep underground openings and confining effects of backfilling material

open access: yes, 2012
The buckling failure of highly-stressed hard rocks surrounding deep underground openings is analyzed in this paper. The effects of the eccentricity of maximum tangential stress and the radial stress gradient are considered in the analysis.
Li, X. B.   +5 more
core   +1 more source

Mechanism of rock burst in deep coal tunnel surroundings due to three-way stress difference gradient

open access: yesMeitan xuebao, 2023
With the deep coal tunnel surrounding rock as the research object, in view of the serious rock burst hazards, incomplete rock burst mechanism research, and the lack of more targeted guidance on the prevention and control of rock burst engineering, indoor
Guolei LIU   +5 more
doaj   +1 more source

Deformation mechanism and optimum supporting structures in fault-bearing biased tunnels

open access: yesZhongguo dizhi zaihai yu fangzhi xuebao
To explore the deformation mechanisms of tunnel surrounding rock under complex geological conditions and develop appropriate technologies for controlling surrounding rock deformation, this study analyzes the deformation of surrounding rock at the mouth ...
Xiaolong LIU   +5 more
doaj   +1 more source

Evaluation and Application of Surrounding Rock Stability Based on an Improved Fuzzy Comprehensive Evaluation Method

open access: yes, 2023
Ensuring the stability of surrounding rock is crucial for the safety of underground engineering projects. In this study, an improved fuzzy comprehensive evaluation method is proposed to accurately predict the stability of surrounding rock.
Rui Zhao   +4 more
core   +1 more source

Coordinated control technology for anti-impact pressure relief of mining roadway and large deformation of surrounding rock

open access: yesMeikuang Anquan, 2023
The mining roadway under complex conditions was taken as the project background in No.3305 working face of Yiqiao Coal Mine, and the research on the coordinated control was carried out for anti-impact pressure relief and surrounding rock deformation on ...
GU Shitan, CHEN Changpeng, HAN Chuanlei, RONG Weitao
doaj   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Control techniques for creep deformation of surrounding rock in deep underground roadways

open access: yesPLOS One
As resource extraction extends to greater depths, surrounding rock in deep underground roadways exhibits pronounced creep deformation due to the coupled effects of high in-situ stress and time-dependent behavior. Conventional support systems face significant challenges in maintaining long-term stability under such conditions.
Lijie Ge   +5 more
openaire   +2 more sources

Latest progress on study of stability control of roadway surrounding rocks subjected to rock burst

open access: yesProcedia Earth and Planetary Science, 2009
AbstractRock burst has caused tremendous hazards in coal mining. Usually, it can cause roof falling suddenly, sometimes even closing and jamming abruptly; so it has become one of the three most difficult problems of deep mining in the world. The authors discussed the present study in this field at home and abroad and introduced the latest progress ...
Gao, Ming-shi   +4 more
openaire   +1 more source

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