Results 71 to 80 of about 739,679 (204)

Surrounding rock control technology of gob-side entry retaining in deep high mining face

Meikuang Anquan
Under the influence of multiple mining influences, the mining pressure is more intense and the surrounding rock deformation is large, which is easy to cause the surrounding rock instability of gob-side entry retaining in fully mechanized mining face.
Junhu ZHANG, Zhenjiang CHEN, Xiancheng GAO, Lei ZHANG, Jianhua LI, Pengjiang DENG   +5 more
doaj   +1 more source

Target detection technology of coal mine wheeled robot combining improved CNN and self attention mechanism

Meikuang Anquan
In complex coal mine environment and poor lighting conditions, the existing target detection technology is difficult to meet the needs of intelligent inspection.
Junfei TANG, Hailong XING, Su LI, Taotao ZHANG, Heng LIU, Shiyu YAO   +5 more
doaj   +1 more source

Calculation Method of Overburden Damage Height Based on Fracture Mechanics Analysis of Soft and Hard Rock Layers

Geofluids, 2019
Under the geological condition of soft and hard rock interaction stratum, the overburden damage height can provide a quantitative support for the design of the locations of gas drainage boreholes in the roof mining fracture zone and the determination of ...
Liang Chen, Shaowu Fan, Can Zhao, Lang Zhang, Zhiheng Cheng   +4 more
doaj   +1 more source

Application of Wi-Fi 6 Technology in Coal Mine

, 2020
The wireless network coverage scheme of Wi-Fi 6 in underground coal mine is designed to solve the problem that 5G communication cannot achieve the whole mine signal coverage in underground coal mine.
ZHANG Jinhao, CHEN Min
core   +1 more source

Key technologies for path planning of coal mine wheeled robots integrating fast traversal random trees and Q-reinforcement learning

Meikuang Anquan
There are a lot of dangerous environment and large volume transportation tasks in the coal mining process. Improving the working quality of coal mine equipment is the key to the intelligent construction of coal mine. In order to improve the efficiency of
Tianfei WEN, Yu GAO, Quan WANG, Chuang YANG   +3 more
doaj   +1 more source

Design of a new type of dynamic quantitative loading system of wheel loader

Gong-kuang zidonghua, 2015
For the low efficient of existing coal shipment method, a new type of dynamic quantitative loading system of wheel loader was designed according to actual situation of coal enterprises.
ZONG Weilin, LI Jia, ZHANG Yajian, SHANG Yingmin, WANG Yechao, PEI Yi, CHEN Detong   +6 more
doaj   +1 more source

Study on Optimization of Coal Mine Safety Risk Evaluation Index System

, 2020
In view of the problems that current coal mine safety risk evaluation index system cannot meet the dynamic safety evaluation of coal mine risk, lack of comprehensive evaluation of multi-specialty and the whole process, through the study of risk factors ...
GAO Tong, LIU Yun, HUANG He, SUN Jianlin
core   +1 more source

COAL-MINING BY MECHANICAL APPLIANCES. [PDF]

Minutes of the Proceedings of the Institution of Civil Engineers, 1900
n ...
openaire   +1 more source

A complete coal mine survey [PDF]

, 1921
As an introduction to this thesis, it would probably be well to give the laws of the State of Illinois relative to mine maps. These laws come under An Act to revise the laws in relation to the coal mines and subjects relating thereto, and providing for ...
Kluge, Harry A.
core   +1 more source

Hydraulic weakening technology for unsupported top coal at the end of fully mechanized caving face

Gong-kuang zidonghua
To address the issue of excessive unsupported top coal length and delayed caving at the end of a fully mechanized caving face, a hydraulic weakening technology for face-end top coal in steeply inclined thick coal seams was proposed based on the coal ...
DONG Haofu, ZHANG Wei, SUN Guangjun, FU Huijian, LONG Zhaoxi, LIU Yang, LIU Dongliang, ZHU Xiaodong   +7 more
doaj   +1 more source