Results 61 to 70 of about 3,284,104 (188)

Carbon emission assessment of tunnel infrastructures: From construction to operation

open access: yesDeep 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
wiley   +1 more source

Intelligent Fault Diagnosis of Rolling Bearing Based on the Depth Feature Fusion Network

open access: yesIEEE Access
An intelligent fault diagnosis method of rolling bearings based on a depth feature fusion network was proposed to solve the problems of a single original signal, large noise interference and difficult diagnosis of varying working conditions of rolling ...
Zihan Feng   +4 more
doaj   +1 more source

Fully mechanized mining system and the suspended buffer.

open access: yes, 2019
Fully mechanized mining system and the suspended buffer.
Baifu An (6240206)   +3 more
core   +1 more source

Systematic analysis of production and efficiency factors of fully-mechanized mining in steeply dipping seam and research on precise strategy of promoting production and efficiency

open access: yesMeitan kexue jishu, 2023
Steeply dipping seam is still internationally recognized as a complex and difficult coal seam. There are many and extensive coal seams in China with excellent coal quality.
Dongfeng YUN   +4 more
doaj   +1 more source

Optimization of Blasting‑Induced Roof Cutting Parameters in Key Stratum and Its Application in Gob‑Side Entry Retention Technology

open access: yesEnergy Science &Engineering, EarlyView.
This study addresses hard roof coal seam conditions by optimizing key stratum blasting‐cutting parameters through theoretical analysis, numerical simulation, and field tests. It proposes calculation methods for blast hole spacing and delay timing based on stress wave theory, controlling roadway deformation within 35 mm, thereby enhancing resource ...
Qiong Liu, Duanxiang Fu, Hongbin Li
wiley   +1 more source

Research on key technologies of intelligent large mining height fully mechanized mining equipments

open access: yesGong-kuang zidonghua, 2019
In order to ensure safe and high-efficient operation of intelligent fully mechanized mining equipments and normalized application of intelligent fully mechanized mining technologies, for fully mechanized mining equipments such as shearer, hydraulic ...
ZHANG Yuliang
doaj   +1 more source

Numerical Simulation Study on Optimization of Horizontal Sublevel Top‐Coal Caving Mining Technique for Steeply Inclined Extra‐Thick Coal Seam

open access: yesEnergy Science &Engineering, EarlyView.
As the sublevel height increases, the top‐coal recovery amount gradually increases, but both the top‐coal recovery rate and the thickened top‐coal recovery rate show a downward trend, and the decline in the top‐coal recovery rate is gradually increasing. The comparison indicates that the optimal sublevel height is 20 m.
Hongsheng Tu   +4 more
wiley   +1 more source

Co‐Evolution of Humans, AI, and Robotics in Autonomous Materials Manufacturing

open access: yesNational Materials, EarlyView.
ABSTRACT Materials manufacturing has entered into a new era with the rapid development of technologies. The convergence of artificial intelligence (AI) and robotics technologies is transforming materials manufacturing from a traditional human‐centered practice into a human, AI, and robotics co‐evolution paradigm.
Yixuan Zhao, Wenlong Li, Xiaodong Chen
wiley   +1 more source

Numerical Simulation Study on the Coupled Transport Law of Airflow and Dust in Fully Mechanized Top Coal Mining Face

open access: yesScientific Journal of Technology
At present, with the large-scale of fully mechanized mining equipment, the air flow and dust transport law in fully mechanized caving face has become more complex. In order to systematically study the dust diffusion characteristics under the influence of
Jiyu Zhao
semanticscholar   +1 more source

Target behavior recognition of fully mechanized mining face based on multi-information self-attention [PDF]

open access: yes
Recognizing the behavior of key equipment and personnel in fully mechanized mining faces is the foundation and core of intelligent sensing of mining environment information.
Yi YANG   +3 more
core   +1 more source

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