Results 71 to 80 of about 1,653 (136)

Analysis and Optimization of Early‐Warning Indicators for Impact Critical Stress in Deep Soft Coal Seams

Energy Science &Engineering, Volume 14, Issue 8, Page 3726-3740, August 2026.
This study determines the impact critical stress early‐warning indicators for deep soft coal seams: 18 MPa (shallow holes), 20 MPa (deep holes), and 3 MPa/d daily stress change rate, via theoretical, experimental and simulation methods. ABSTRACT The accurate determination of early‐warning indicators for critical impact stress in deep soft coal seams is
Haichen Yin, Xiufeng Zhang, Atao Li, Yanliang Wang, Long Yuan, Chaohong Shi, Yang Chen, Caiping Lu, Liangjin Jiang   +8 more
wiley   +1 more source

Research on Displacement Failure Characteristics of Deep Roadway Surrounding Rock

IOP Conference Series: Earth and Environmental Science, 2020
Abstract In order to explore the displacement failure characteristics of deep roadway surrounding rock, the surrounding rock stress field model of the uniform stress field in the circular tunnel is simplified. It analyzes the stress evolution features of deep coal rock and discusses the mechanism of zonal disintegration.
openaire   +1 more source

Research on the Critical Mechanical Criterion for Stick‐Slip Instability of Mining‐Affected Normal Faults Based on the Rate‐and‐State Friction Law

Energy Science &Engineering, Volume 14, Issue 8, Page 3935-3947, August 2026.
Mining disturbance tends to trigger fault stick‐slip instability and induce disasters. This paper establishes a mechanical model to propose a critical criterion, which is verified to be reliable via FLAC3D, providing a theoretical basis for early warning of fault slip disasters.
Bowen Wu, Yanhui Li
wiley   +1 more source

Research on energy evolution law and control method of deformation of high stress roadway surrounding rock

Meitan xuebao
Aiming at the problem of deformation and damage of surrounding rock in the roadway of coal mine back to mining, the study is carried out from the perspective of plastic dissipation generated by surrounding rock, so as to form a stable system in terms of ...
Hongtao LIU, Zhou HAN, Zihan CHEN, Zijun HAN, Qingyu LIU, Hongkai ZHANG, Dandan ZHANG, Jialu LIANG   +7 more
doaj   +1 more source

Identifying priority areas to guide management planning of a protected area network to support snow leopard (Panthera uncia) in Asia

Ecological Solutions and Evidence, Volume 7, Issue 3, July–September 2026.
We analysed a total of 512 protected areas (PAs) across 13 snow leopard range countries, utilizing graph theory coupled with resistant kernels, to rank and prioritize PAs for management decisions. We found that protection status often did not correspond with PA importance for connectivity, critical PAs tended to be clustered at international borders ...
Aliana Norris, Luciano Atzeni, Samuel A. Cushman, Kun Shi, Philip Riordan   +4 more
wiley   +1 more source

Principle and technology of step strengthening control of soft rock argillization roadway in coal mine

Meitan xuebao
The sedimentary rock strata of the coal measure are generally characterised by significant argillity, high water content and weak lithology. The problem of controlling the stability of the surrounding rock in soft rock argillation roadways has become ...
Guichen LI, Haoran HAO, Yuantian SUN, Jinghua LI, Sen YANG, Zeyu SHAO, Xiaofang WO   +6 more
doaj   +1 more source

Revisiting a long‐overlooked skull: Implications for the distribution of Dinodontosaurus brevirostris (Kannemeyeriiformes) in the Brazilian Triassic

The Anatomical Record, Volume 309, Issue 7, Page 1749-1765, July 2026.
Abstract Dicynodonts (Anomodontia: Dicynodontia) were one of the main groups of terrestrial tetrapods in Permian and Triassic faunas. In Brazil, the genus Dinodontosaurus is one of the most common tetrapod taxon in the Triassic Santa Maria Supersequence. This genus has a complex taxonomic history and is represented in the Triassic of both Argentina and
Julia Lara Rodrigues de Souza, João Lucas Da Silva, Voltaire D. P. Neto, Arielli Fabrício Machado, Juan A. Escobar, Felipe L. Pinheiro   +5 more
wiley   +1 more source

Study on fracture parameter calibration and failure characteristics of rock with hole and crack

Deep Underground Science and Engineering, Volume 5, Issue 2, Page 597-614, June 2026.
The SIF and plastic zone equations for a single hole and crack have been derived. The model's failure state leads to the identification of four types of cracks. The plastic zone increases with increased brittleness and decreased crack length. Abstract Cracks within the surrounding rock of roadways significantly affect their stability and failure ...
Shaochi Peng, Wensong Wang
wiley   +1 more source

Research on dissimilation characteristics and control method of failure of surrounding rock in the roadway with repeated mining of steep and ultra-close multiple coal seam

Meitan kexue jishu
During the process of mining of the steep and ultra-close multiple coal seam groups, the roadway is affected by multiple mining, the regional stress environment is complex, the deformation and failure of the roadway is severe and the non-uniform ...
Housheng JIA, Zhiming ZHANG, Shaowei LIU, Bo PENG, Hui YU, Shuaiqin SHAO, Yibo WANG   +6 more
doaj   +1 more source

Research on large deformation mechanism of deep roadway with dynamic pressure

Energy Science & Engineering, 2020
In this paper, the large deformation mechanism of deep dynamic pressure roadway is studied from the perspective of the formation and development of plastic zone, and creep and damage of rock mass.
Lei Fan, Weijun Wang, Chao Yuan, Wenqing Peng   +3 more
doaj   +1 more source