Results 71 to 80 of about 792 (177)

A Review on Composite Railway Sleepers: Global View, Life‐Cycle Sustainability, and Regional Gaps in West Africa

Advances in Materials Science and Engineering, Volume 2026, Issue 1, 2026.
Composite railway sleepers encompass a diverse range of material systems, including polymer‐based composites manufactured from virgin and recycled polymers, as well as hybrid formulations tailored for structural and environmental performance. They withstand deterioration, insect infestations, and humidity, resulting in enhanced durability and prolonged
Ekow Quansah, Acheampong Antwi Afari, Sullaiman Alhassan, Ebenezer Adu Kyeremeh, Ezekiel Sakitey Nanor, Yakubu Issaka, Mohammad Rezwan Habib   +6 more
wiley   +1 more source

Digital twin: meeting the technical challenges of intelligent fully mechanized working face

, 2022
The goal and task of intelligent fully mechanized working face are to independently complete the reliable coal cutting of the fully mechanized working face, maintain the geometric relationship of the working face and reliable roof support.
WANG Xuesong, AN Wenlong, GE Shirong, CHEN Shuhang, WANG Shibo, GUAN Zenglun, LYU Yuanbo   +6 more
core   +1 more source

Study on the Evolution of Concentrated Stress Distribution in Close‐Proximity Coal Seam Residual Pillars

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
Closely spaced coal seams are extensively distributed across China. As shallow coal resources face increasing depletion, coal mining is gradually extending to deeper zones. Deciphering the stress distribution pattern of the residual coal pillar floor in closely spaced coal seams is of profound importance to the safe and efficient mining operations of ...
Dengyan Gao, Chenyang Ma, Wen Luo, Kuiying Gao, Jing Chai, Zhicheng Han, Jianhua Chen, Yinsu Tian, Meilu Yu   +8 more
wiley   +1 more source

Discussions on Some Security Mining Problems of Fully-Mechanized Top Coal Mining in “Three Soft” Large Inclined Angle Working Face

, 2011
This paper studies insecure factors of fully-mechanized top coal mining in “three soft” large inclined angle working face, which have impacted the normal generation badly, including rib spalling, roof fall and equipment slide, etc.
Yanli, Zhu, Dongming, Guo, Xianlei, Zhu, Guihe, Li, Renshu, Yang   +4 more
core   +1 more source

Stability Analysis of Long‐Span Temporary Support Roofs in Coal Mine Roadways Using Multistation Parallel Excavation Technology

Geofluids, Volume 2026, Issue 1, 2026.
The parallelisation of excavation and support operations remains a significant challenge for the rapid advancement of coal mine roadways. This study proposes an excavation technology incorporating multistation parallel operations. The roof stability of the large‐span temporary support system, a core of the multistation parallel excavation system, was ...
Yunzhu Wang, Fenghui Li, Yunhai Cheng, Xin Yu, Hao Wu, Guandong Wang, HE YONGLIANG   +6 more
wiley   +1 more source

Modeling the Speed‐Induced Key Block Motion and Support Resistance in Longwall Mining With a Multilayer Hard Roof: Insights From the Xiaojihan Coal Mine

Geofluids, Volume 2026, Issue 1, 2026.
To theoretically explain and quantify the effect of advancing speed (ADS) on ground pressure (GP) behavior, the 13,218 working face of the Xiaojihan Coal Mine (XCM) was taken as the engineering case. Field measurements and theoretical analysis were combined to examine how changes in ADS influence the roof structure and the support resistance ...
Hui Gao, Xiaopeng Duan, Xufeng Wang, Yuanman Xie, Enqiang Liu, Xuyang Chen, Chenlong Qian, Pramita Mishra   +7 more
wiley   +1 more source

Corrosive protection mechanism of Zinc-rich coatings and application in coal mining equipment

矿业科学学报, 2016
Corrosive protection performance of self-made inorganic Zinc-rich primer coating (KD) and different corrosion protection coating systems [KD+intermediate+finish paint (KDZY)，commercial primer+intermediate+finish paint (ZYQT)，KD+water based intermediate ...
Chen Huahui, Pan Junyan, Ma Feng, Xie Bo, Jin Fengtian   +4 more
doaj  

Analysis and Research on Control Technology of Large Mining Height Fully Mechanized Face and Roadway Surrounding Rock

, 2018
Coal is important basic energy and important raw materials, the development of coal industry to support the rapid development of the national economy.
Liu Yang, Kaiyi Xue
core   +1 more source

Research on key technologies of intelligent fully mechanized mining on working face with large mining height

, 2018
In order to solve problems of large number of workers and high labor intensity on fully mechanized mining face with large mining height, according to actual situation of No.2 Coal Mine of Huangling Mining Group Co., Ltd., technical difficulties such as ...
FAN Jingdao
core   +1 more source

Electrical and Mechanical Technology Research of Fully Mechanized Coal Caving under Aquifer

, 2011
In this paper, We studied the technical issues of fully mechanized caving under aquifer in Tiebei mine of Zhalainuoer mining company，carry on analysis and studies from the electrical and mechanical equipment to the technical management and gave the ...
Gui Ling Bu, Li Wang, Bai Chao Song
core   +1 more source