Results 41 to 50 of about 1,488 (167)

A Composite Pressure Relief Method Based on Roof Cutting and Fracturing Expansion for Thick Hard Roofs in Large Mining Heights

International Journal of Geomechanics
Abstract In coal mining, thick and hard roof strata are widely distributed, posing significant hazards that easily lead to various issues such as extensive deformations of the surrounding rock and failure of support systems due to strong mining pressure, resulting in frequent safety incidents.
Jun Yang, Hongxu Song, Yubing Gao, Qiang Fu, Jianning Liu, Yuxuan Liu, Hongyu Jin   +6 more
openaire   +1 more source

Advances in vital‐sign prediction and early‐warning models for underground coal mine workers integrating environmental factors

Deep Underground Science and Engineering, EarlyView.
This review synthesizes advances in predicting miners' vital signs by integrating environmental monitoring (dust, temperature, and gas) with physiological data. It highlights multi‐source data fusion techniques and early‐warning models for enhanced occupational safety in underground coal mines.
Junji Zhu, Dawei Cui, Yingjie Liu, Yuntao Liang, Yue Zhang   +4 more
wiley   +1 more source

Carbon emission assessment of tunnel infrastructures: From construction to operation

Deep Underground Science and Engineering, EarlyView.
This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long, Wout Broere, Xuehui Zhang, Tian Xia, Richard de Nijs   +4 more
wiley   +1 more source

Large deformation control methods for roadways in thick coal seams with high mining height and hard roof

Gong-kuang zidonghua
For the control of surrounding rock in thick coal seams with high mining heights and hard roofs, the traditional roadway layouts employing coal pillars often induce strong strata behavior, resulting in large deformations, rock bursts, and other ...
WANG Shaowei, NI Xuening, XU Jingshuai, LI Yayun, WANG Yunfeng, LI Yahui   +5 more
doaj   +1 more source

Influence of roof cutting parameters on stability of surrounding rock of gob-side entry retaining

矿业科学学报, 2022
As one of the core issues of roof cutting pressure relief gob-side entry retaining technology, roof cutting parameters have a great influence on the stability of surrounding rock.Taking the 1226 working face of Shuguang Mine as the engineering background,
Sheng Fengtian, Zhang Yong, Wei Wensheng, Duan Yuqing, Mao Kaibin   +4 more
doaj   +1 more source

Investigation on tunnel stability considering pipe‐roof support with transparent soil technology

Deep Underground Science and Engineering, EarlyView.
This study integrates transparent soil technology, 3D reconstruction and numerical simulation to captures the full‐field deformation of shield tunnel instability. Results demonstrate that pipe‐roof support enhances stability via the “soil‐arching barrier effect,” effectively restraining failure wedge development by extending stress transfer paths ...
Zhi Jia, Yunpeng Ji, Zhao Lu, Honghua Zhao, Limin Zhang   +4 more
wiley   +1 more source

Study on roof-cutting pressure relief technology for roadways with three-directional free surfaces and full anchor-cable support

Gong-kuang zidonghua
Current studies on surrounding rock control in dynamic pressure roadways mainly focus on roadways under single- or two-directional free-surface conditions, while relatively few studies have applied the combined control technology of roof-cutting pressure
NIU Jizhan, YANG Zhanbiao, LIU Benteng, WANG Xiangyu, XIE Han, XU Changtao   +5 more
doaj   +1 more source

Nested Carbon Governance in Southeast Asia: Towards Just Nature‐Based Solutions?

Environmental Policy and Governance, EarlyView.
ABSTRACT Nature‐based solutions (NbS) have gained prominence as an integrated approach to addressing climate change and biodiversity loss while supporting sustainable development. Yet, their implementation across Southeast Asia remains fragmented and often contested.
Helena Varkkey, Michelle Ann Miller, David Taylor   +2 more
wiley   +1 more source

Roadway Protection by Roof-Cutting in the Support Removing Channel of the Long-Wall Mining Face

Shock and Vibration, 2022
Aiming at strong mining pressure and large deformation of surrounding rock in the main roadway, a mechanical model of the advanced abutment pressure distribution in the long-wall mining face was established.
Xingyun Ren, Bingyuan Hao, Hongwei Wang, Junjie Zhao, Ji Zhang, Chen Zhang   +5 more
doaj   +1 more source

Research and application of breaking length of lateral cantilever roof cutting in goaf

Meikuang Anquan, 2023
The goaf at the side of the roadway pillar (lateral roof) often encounters thick and hard roof, which will not collapse naturally in a short period of time, and is easy to cause mine earthquake and roof fall.
Gaoming ZHAO, Min TU, Xiangyang ZHANG, Qingwei BU, Qingchong ZHAO, Jiaxin DANG   +5 more
doaj   +1 more source