Results 51 to 60 of about 1,470,376 (107)

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

Instability Mode and Control Technology of Surrounding Rock in Composite Roof Coal Roadway under Multiple Dynamic Pressure Disturbances

Geofluids, 2022
In view of the problems of composite roof coal roadway under multiple dynamic pressure disturbances such as strong stratification, large deformation of the roadway surrounding rock, and poor safety and reliability, this paper analyzed the deformation and
Peng Wang, Nong Zhang, Jiaguang Kan, Xingliang Xu, Guangzhen Cui   +4 more
doaj   +1 more source

Study on Deformation Law of Crossing Layer Drilling Superimposed Floor Roadway

Energy Science &Engineering, Volume 14, Issue 6, Page 2752-2771, June 2026.
Based on deformation law of crossing layer drilling superimposed floor roadway, low dip angle drilling is particularly susceptible to complications such as borehole blockage and collapse. ABSTRACT Floor extraction roadway crossing layer drilling is a pivotal strategy for gas control in areas prone to coal and gas outbursts.
Xiao Liu, Bo Li, Jiawei Xie, Xiaoming Ni, Shaoren Wei, Chengtao Yang, Yubo Zhang, Haixiao Lin, Wei Zhao, Tao Wang   +9 more
wiley   +1 more source

Experimental Investigation of Sensitivity for Coal and Gas Outburst Risk Prediction Indexes in Raw and Tectonic Composite Coal Seams

Energy Science &Engineering, Volume 14, Issue 6, Page 2772-2784, June 2026.
A comparative study was conducted on gas desorption laws of raw and tectonic coals. The sensitivity of regional and local outburst prediction indexes was compared. Gas content is more sensitive than gas pressure for composite coal seams. K1 can more accurately predict the outburst danger than Δ h 2 in composite coal seams.
Haijun Guo, Xi Xi, Kai Wang, Liang Wang, Yulin Li   +4 more
wiley   +1 more source

Stability mechanisms of soft rock mining roadways through roof cutting and pressure relief: an exploratory model experiment

Frontiers in Ecology and Evolution, 2023
IntroductionSoft rock mining roadways are severely deformed and damaged during coal mining. Blindly increasing the support strength not only has little effect but also wastes material resources.MethodsMaintaining the original support parameters, model ...
Qingwen Zhu, Tingchun Li, Qingnan Lou, Yishuai Liu, Chunping Li, Jiangang Chen   +5 more
doaj   +1 more source

Anti‐Slip Material‐Based Strategies and Approaches

Advanced Materials Technologies, Volume 11, Issue 10, 22 May 2026.
This review highlights the principle mechanisms of slipping at the microscale, linking contact mechanics with a friction behavior model for surface interfaces. Main strategies to develop anti‐slip properties to the surfaces are discussed alongside standardized testing approaches.
Sogand Abbaspoor‐Zanjani, Carlo Antonini, Teresa Gatti, Mengjiao Wang   +3 more
wiley   +1 more source

Study on the Upper Limit of Roof Failure in Soft Rock Roadway

, 2023
This study addresses the issue of large deformation in soft rock roadways, using the 50213 tailgate of Guantun Coal Mine as a case study. Field investigations were conducted to assess the condition of roadway bolts, anchor cables, and the internal damage
Shoushi Gao, Jie Zhang, Tao Yang, Tong Li, Yifeng He, Yihui Yan, Jianping Sun   +6 more
core   +1 more source

Pressure relief for drilling (trenching) and support technology in deep soft rock tunnels

Frontiers in Earth Science
Controlling surrounding rock stability in deep soft rock tunnels solely by increasing the support strength is challenging. The key areas where the surrounding rock of a roadway is prone to “instability” should be treated with comprehensive measures, such
Yang Ling, Xu Ying
doaj   +1 more source

Assessing Post‐Earthquake Emergency Healthcare Accessibility Considering Damage to Hospital Buildings and Transportation Infrastructure

Earthquake Spectra, Volume 42, Issue 2, May 2026.
This article presents a framework for performing a regional assessment of the accessibility of emergency healthcare facilities after a major earthquake. Accessibility is assessed by applying the enhanced two‐step floating catchment area method to a regional road network, implemented in ArcGIS.
Kiranjot Kaur, Carlos Molina Hutt, Amy M. Kim   +2 more
wiley   +1 more source

Similar Material Simulation Study on Dam Movement and Deformation Law of Deep Coal Seam Mining Under Dam

Energy Science &Engineering, Volume 14, Issue 4, Page 1808-1821, April 2026.
Aiming at the difficulties in accurately calculating the movement and deformation of small‐sized, deep‐buried dams with a significant height‐to‐depth ratio in deep fully mechanized caving mining, this study proposes to separate the analysis of surface and dam deformation.
Zhang Feng, Qin Hong‐yan, Hu Shou‐bin, Xu Xiao‐yu, Ti Zheng‐yi, Zheng Zhuo‐yan, Yang Shuai, Li Yang   +7 more
wiley   +1 more source