Results 51 to 60 of about 2,304 (177)

Mechanism and disaster control new technology of strong ground pressure manifestation in ultra‐large mining face

Deep Underground Science and Engineering, EarlyView.
In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu, Manchao He, Jun Yang, Yubing Gao, Qiang Fu, Qing Ma, Yajun Wang   +6 more
wiley   +1 more source

Phase Planning for Open Pit Coal Mines through Nested Pit Generation and Dynamic Programming

Mathematical Problems in Engineering, 2021
This paper presents a phase planning method specially designed for coal deposits with nearly horizontal, bedded coal seams. The geology of this type of deposit is modeled into a column model, instead of a block model, to avoid coal-rock mixing in blocks.
X. Gu, Qing Wang, Xiaochuan Xu, Xiaoqian Ma   +3 more
semanticscholar   +1 more source

Management plan of geological hazard threats in the fault zone of adjacent open-pit mines

Meitan kexue jishu
In the development of large-scale open-pit coal fields in China, there are often several Coal companies entering the same coal field, and each Coal company is a main body of development, mining coal resources in the state-allocated strip area, and ...
Guangwei LIU, Junxiong TU, Xianshuai MA, Yong YAO, Liang WANG, Meiling ZHAO   +5 more
doaj   +1 more source

Dynamic geo‐hydrogeological monitoring‐driven situational awareness for real‐time floor water inrush risk prediction in deep mining

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, Huiyong Yin, Fangying Dong, Tao Wu, Chao Zhang   +4 more
wiley   +1 more source

Spatial and Temporal Distribution of Groundwater in Open-Pit Coal Mining: A Case Study from Baorixile Coal Mine, Hailaer Basin, China

Geofluids, 2022
Groundwater distribution influenced by mining activities is hard to be tracked due to the lack of accurate and real-time monitoring data. To address the groundwater dynamic change data under the mining conditions of open-pit coal mines, a three ...
Wenfeng Du, Lei Chen, Yunlan He, Qiangmin Wang, Peiqiang Gao, Quansheng Li   +5 more
doaj   +1 more source

Performance assessment of a potential underground thermal storage facility: Case study of the closed mine Prosper‐Haniel in the Ruhr coal mining area in Germany

Deep Underground Science and Engineering, EarlyView.
This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
wiley   +1 more source

Regularity of particle velocity decrease with scaled distance for rockbursts and shot holes [PDF]

Acta Montanistica Slovaca, 2015
The paper is intended as an analysis of particle velocity generated during rockbursts in deep coal mines in the Ostrava-Karviná Coal Basin (OKCB), which are recorded at five underground seismic stations.
Karel Holub, Jana Rušajová
doaj   +1 more source

Seismic analysis and design of tunnels within fault ground: A review

Deep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang, Yujing Jiang, Xuepeng Zhang, Yuyong Jiao, Ningbo Li, Xiao Wang, Bo Li   +6 more
wiley   +1 more source

Bimetallic Synergy in Cocatalyst Alloy Nanoparticles for Efficient Photocatalytic Hydrogen Production

EcoEnergy, EarlyView.
A bimetallic NiAg alloy is assembled on the surface of Zn3In2S6 to construct a NiAg‐Zn3In2S6 composite using a chemical reduction method. By adjusting the different alloy ratios, the hydrogen evolution activity of the optimum Ni0.25Ag0.75‐Zn3In2S6 photocatalyst achieves 21.32 mmol·g−1·h−1. ABSTRACT A bimetallic NiAg alloy is assembled on the surface of
Zhihui Yang, Jiali Ren, Yanjun Xue, Xinyu Wang, Jian Tian   +4 more
wiley   +1 more source

Study on mechanical property degradation characteristics and damage mechanism of red sandstone under wetting-drying cycles

KSCE Journal of Civil Engineering
The damage evolution laws and failure characteristics of rocks subjected to wetting-drying cycles are critical for the stability control of rock mass engineering.
Yujing Jiang, Junxiao Han, Changsheng Wang, Jianrong Liu, Hengjie Luan, Sunhao Zhang, Jiale Wei   +6 more
doaj   +1 more source