Results 41 to 50 of about 13,578 (224)
Research on Single Tube Inverter Wireless Power Supply System for LED Lamp Inroadway
Journal of Harbin University of Science and Technology, 2020 In view of the inconvenient replacement of lamps and existing safety problems when using wired way to supply power to LED lamps in the roadway, this paper focuses on a wireless power supply device for LED lamps in the roadway.
WANG Songbai +3 more
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Research progress on bolt support theory and technology of coal mine roadway in China
Meikuang Anquan, 2023 With the increasing depth of roadway and the complexity of mine environment in China, the challenge of roadway bolt support will be more serious. Based on the investigation of relevant literature, the related theories of roadway bolt support were ...
TANG Jinzhao, FAN Lidan, ZHANG Jiyun, XU Feng, YU Liwei, YANG Jie, ZHAO Wei
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Deep Underground Science and Engineering, EarlyView.The fused data extracted from the distributed monitoring system as the data basis, combined with dynamic geological data, are imported into a deep learning model. As the geological conditions of mining and excavation change, the risk of water inrush at the working face is retrieved in real time.
Yongjie Li +4 more
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AtmosphereThis study analyzes changes in NOx concentrations due to the aerodynamic and dry deposition effects of roadside trees in the Jongno area, a central business district of Seoul, Republic of Korea, using a computational fluid dynamics (CFD) model.
Yeon-Uk Kim +4 more
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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 +4 more
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Deep Underground Science and Engineering, EarlyView.For the roof of coral reef limestone caverns, a novel tension‐shear composite failure mechanism was developed. The most critical tensile crack model was identified using a hybrid optimization algorithm, and the stability of the cavern roof was analyzed accordingly.
Dongsheng Xu, Chenxu Li, Chuantan Hou
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Meitan kexue jishuRock burst is one of the disasters that seriously affect the safe and effective mining of coal in mine mining. It is of great significance and value to study the principle and technology of bolt anti-impact support to prevent and control the rock burst ...
Jun HAN +4 more
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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 +4 more
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Advances in Civil Engineering, 2019 Cable system construction is one of the most risky construction stages of long-span suspension bridges, and a reliable risk assessment is an important means to ensure the construction safety.
Zhifang Lu +3 more
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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 +9 more
wiley +1 more source