Results 31 to 40 of about 815,128 (154)

Methane Content Estimation in DuongHuy Coal Mine

E3S Web of Conferences, 2018
Methane hazard has always been considered for underground coal mining as it can lead to methane explosion. In Quang Ninh province, several coal mines such as Mạo Khe coal mine, Khe Cham coal mine, especially Duong Huy mine that have high methane content.
Nguyen Van Thinh, Mijał Waldemar, Dang Vu Chi, Nguyen Thi Tuyet Mai   +3 more
doaj   +1 more source

Research progress and development trend of staged hydraulic fracturing technology in long-borehole underground coal mine

, 2022
Since the “13th Five-Year Plan”, significant progress has been made in the directional long-borehole staged hydraulic fracturing technology, equipment development and engineering demonstration application of underground coal mine through the technical ...
Huan, YANG, Jian, ZHANG, Dongdong, CHEN, Le, LIU, Bingyi, JIA, Wenbo, LI, Chenyang, WANG, Siqing, SUN, Nan, DAI, Weicheng, LONG, Tianlin, DU, Kaige, ZHENG, Jizhan, ZHAO   +12 more
core   +1 more source

Overview of standard and technology development of underground explosion-proof electrical equipment

Gong-kuang zidonghua, 2015
The paper summarized coal mine underground explosion-proof electrical technique and its development, emphatically introduced the actualities and development trend of coal mine underground explosion-proof electrical standards, analyzed and studied the ...
GAO Peng, HOU Yuanliang, LIU Junjie, LIN Weitong   +3 more
doaj   +1 more source

Two-dimensional accurate personnel positioning method in underground coal mine based on Kalman filter

Gong-kuang zidonghua, 2018
Due to affects of clock synchronization error, clock timing error, multipath effect, not line of sight （NLOS）delay error, electromagnetic disturbance between positioning substation and positioning card, it has large positioning error in the existing ...
SUN Zhexing, WANG Yanwen
doaj   +1 more source

Application of coal mine roof rating in Chinese coal mines

International Journal of Mining Science and Technology, 2018
The coal mine roof rating (CMRR) is a measure of roof quality or structure competency for bedded roof types typically of underground coal mines. The CMRR has been used widely in the US, South Africa, Canada and Australia.
Yongyin Wang, Abbas Taheri, Xianbi Xu
doaj   +1 more source

Technology and engineering test of filling goaf with coal gangue slurry

Scientific Reports, 2023
Based on the greening and low interference disposal requirements of coal gangue in high-yield and high-efficiency mines in Inner Mongolia and Shaanxi, and by integrating the existing theories and technologies such as underground filling technology of ...
Shengrong Xie, Hao Pan, Wenzhe Gu, Lei Zhu, Dong Yue, Dongdong Chen, Tianqi Song, Zaisheng Jiang   +7 more
doaj   +1 more source

Data on methane concentration collected by underground coal mine sensors

Data in Brief, 2021
Coal mining requires working in hazardous conditions. Miners in an underground coal mine can face several threats, such as, e.g. methane explosions.
Michał Kozielski, Marek Sikora, Łukasz Wróbel   +2 more
doaj   +1 more source

An algorithm of side information generation of coal mine underground video sequence based on full search

Gong-kuang zidonghua, 2014
In view of characteristics of low illumination and low definition of image in distributed coding of coal mine underground video, an algorithm of side information generation of coal mine underground video sequence based on full search was proposed.
CHENG Deqiang, LIU Jie, GUO Zheng
doaj   +1 more source

Evolution of Dynamic Elastic Parameters and Dry-Out-Induced Weakening Mechanisms in Reservoir and Caprock During Underground Gas Storage: Joint Ultrasonic and NMR Monitoring

Applied Sciences
Understanding dry-out-induced weakening of reservoir and caprock rocks driven by gas displacement is critical for ensuring the operational safety and efficiency of underground gas storage (UGS).
Yan Wang, Zhen Zhai, Quan Gan, Saipeng Huang, Limin Li, Juan Zeng, Tingjun Wen, Sida Jia   +7 more
doaj   +1 more source

Application of Intelligent Inspection Robot in Coal Mine Industrial Heritage Landscape: Taking Wangshiwa Coal Mine as an Example

Frontiers in Neurorobotics, 2022
This study is developed to explore the role of intelligent inspection robot in the protection and utilization of coal mine industrial heritage. Based on the actual situation of the coal mine, the underground planning protection scope is analyzed.
Yan Shen, Yu Li, Zengping Li
doaj   +1 more source