Results 51 to 60 of about 689,431 (233)

Study on floor disaster-causing mechanism of fully-mechanized mining face crossing drainage roadway in water-rich area

Meikuang Anquan
To prevent delayed water inrush accidents during the fully-mechanized mining face crossing the intermediate roadway, this study takes the water inrush incident occurring in 1293 mining face of the east well in Gequan Coal Mine passing through the ...
Guoju WANG, Lisong ZHAO, Yinbo LIU, Ze ZHOU, Bo YANG   +4 more
doaj   +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

Investigation on the failure evolution characteristics of surrounding rock in deep cross‐fault roadway: Based on physical model test and numerical simulation

Deep Underground Science and Engineering, EarlyView.
This study reveals the failure evolution characteristics of deep cross‐fault roadway surrounding rock under excavation support and periodic weighting. Periodic weighting readily induces fault activation, with the spatial distribution of failed rock masses being controlled by the fault strike and dip.
Tiezhu Li, Suping Peng, Jing Zheng, Zhanhua Yang, Qijun Tian   +4 more
wiley   +1 more source

Research on regional anti-burst and pressure relief technology of roadway group affected by mining in thick and hard roof working face

Gong-kuang zidonghua, 2021
Under the impact of special geological and mining technology conditions, the roadway group area near the working face of the mine threatened by the rock-burst disasters is often in the high stress environment with a high impact risk.
DOU Guidong1, JIA Zenglin1, GAO Yonggang1, ZHANG Ying2   +3 more
doaj   +1 more source

Mechanism of “seesaw‐type” rock burst in coal seam mining beneath mountainous areas

Deep Underground Science and Engineering, EarlyView.
This study reveals the mechanism of “seesaw‐type” rock bursts during coal mining beneath mountainous areas. The advancing working face induces nonuniform fracturing of the overburden. The detached mountain mass then undergoes a seesaw‐type rotational movement around a shifting pivot, driving the primary fracture through a characteristic “open‐close ...
Chao Zhou, Xueqiu He, Zhenlei Li, Ping Wang, Dazhao Song, Fuxing Jiang, Shan Yin, Anliang Lü, Menghan Wei, Taoping Zhong   +9 more
wiley   +1 more source

Dynamic prediction of coal and gas outburst risk based on quantitative analysis of stress–energy evolution and adaptive correction

Deep Underground Science and Engineering, EarlyView.
This study quantitatively analyzed the spatiotemporal evolution of stress redistribution ahead of the working face by integrating coal seam distribution, tectonic stress anomalies, gas pressure, and mining‐induced disturbances. An R‐value criterion for coal and gas outburst (CGO) risk assessment was established based on energy principles.
Yingjie Zhao, Xueqiu He, Dazhao Song, Liming Qiu, Minggong Guo, Jie Liu, Qiang Liu, Yi Zhu   +7 more
wiley   +1 more source

Developing a universal tunnel span classification from global tunnel databases

Deep Underground Science and Engineering, EarlyView.
A universal tunnel span classification system is introduced that incorporates tunnel span, cross‐sectional area, typical tunnel types, and intended uses. Representative flatness ratio values are also provided for each span class. The classification is derived from a comprehensive database of 450 tunnel profiles from 47 countries.
Simon Heru Prassetyo, Inzagi Suhendar, Semmy Andrew Anugerah Djawa Tagi, Bonifacio Bondan Satryojati, Dzakwan Naufal Pratama, Yeremia Sintong Damero, Yudhidya Wicaksana, Erwin Lim, Ridho Kresna Wattimena   +8 more
wiley   +1 more source

Perceptions of Governance (Il)Legitimacy Mediate Climate Change Adaptation in the Lake Victoria Basin, Uganda

Environmental Policy and Governance, EarlyView.
ABSTRACT Governance is a well‐known dimension of adaptive capacity across various frameworks, however specific links between perceptions of governance (il)legitimacy and adaptive capacity remain relatively unexplored. In this study, we investigate connections between climate change adaptation and perceptions of governance (il)legitimacy using focus ...
Emma D. Rice, Jonathan G. Low, Molly Atkins, Bwambale Mbilingi, Veronica Mpomwenda, Laban Musinguzi, Vianny Natugonza, Fiona Nunan, Elizabeth A. Nyboer   +8 more
wiley   +1 more source

Study on the Stress Variation Law of Inclined Surrounding Rock Roadway under the Influence of Mining

, 2022
This study takes three roadways with similar burial depths in different strata in Xieqiao Mine of Huainan as its research object. This study involves the observation and analysis of borehole stress gauge data under the influence of mining pressure.
Tao Ling, Weiwei Peng, Qian Jia, Xu Gao, Hai Wu, Kai Liu, Yanlin Zhao   +6 more
core   +1 more source

Short-wall roadway backfill method for sustainable mining

Scientific Reports
It is crucial to control surface subsidence and utilize solid wastes for sustainable mining. This paper proposes a short-wall roadway backfill mining method with advantages in avoiding surface subsidence and utilizing solid wastes. A mechanical model is developed to predict roof fractures based on tensile stress. The impact of mining parameters-such as
Zhang, Leiming, Pan, Jiliang, Shan, Pengfei, Miao, Shengjun, Zhang, Ying, Zhang, Yun, Xu, Huicong, Cai, Meifeng, Xi, Xun   +8 more
openaire   +4 more sources