Discussion on the Development of Coal Mining Technology and Coal Mining Automation Technology

2021 ◽  
Keyword(s):  
Coal Mining ◽  
Mining Technology ◽  
Automation Technology

scholarly journals NEW POSSIBILITIES OF CALCULATING THE VOLUMES OF EXTRACTED MASSES IN THE SURFACE MINING OF BROWN COAL

2017 ◽  
Vol 63 (3) ◽  
pp. 8-17
Author(s):  
Dana Vrublová ◽  
Roman Kapica ◽  
Beáta Gibesová ◽  
Jaroslav Mudruňka
Keyword(s):  
Czech Republic ◽  
Real Time ◽  
Coal Mining ◽  
Brown Coal ◽  
Surface Mining ◽  
Spatial Position ◽  
Mining Technology ◽  
The Czech Republic ◽  
Time Motion ◽  
Volume Calculations

Abstract The companies engaged in brown coal mining are looking for ways of managing the mining process as efficiently as possible. The principal mining technology used for brown coal mining in our country, but also in Germany and Poland, are wheel excavators. The evolving GNSS technology has enabled designing and realisation of systems for determining the spatial position of the excavator wheel. The visualisation of the wheel's spatial position and tracking of its real-time motion is performed in the Czech Republic by the program Mine Model developed by the company KVASoftware. One of the most important tasks of mine surveyors is the calculation of the volumes of the extracted masses. The described system performs this task in real-time. This article describes an application that is used to automate volume calculations.

Analysis of Three-Dimensional Numerical Simulationin on Overlying Strata’s Stress Field and Displacement Field in Thick Seam Mining

2013 ◽  
Vol 718-720 ◽  
pp. 1919-1922
Author(s):  
Meng Lin Xu ◽  
De Shen Zhao
Keyword(s):  
Numerical Simulation ◽  
Stress Field ◽  
Coal Mining ◽  
Displacement Field ◽  
Three Dimensional ◽  
Mining Technology ◽  
Thick Seam ◽  
High Efficient ◽  
Seam Mining ◽  
Overburden Strata

It takes the typical coal of mining in S2S9 face of Daping mine, using the 3-D numerical simulation to reveal on its face with the vertical characteristics of the stress field and displacement field .The study showed that the overburden strata migration features during the mining process in in thick seam mining of Daping mine.This research can be a reference for safety and high efficient coal mining of other parts of the soft overburden in extra- thick seam mining technology.

scholarly journals Subsidence Control Design Method and Application to Backfill-Strip Mining Technology

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Xiaojun Zhu ◽  
Feng Zha ◽  
Guangli Guo ◽  
Pengfei Zhang ◽  
Hua Cheng ◽  
...  
Keyword(s):  
Coal Mining ◽  
Influencing Factors ◽  
Recovery Rate ◽  
Design Method ◽  
Control Design ◽  
Resource Recovery ◽  
Design Parameters ◽  
Strip Mining ◽  
Filling Material ◽  
Mining Technology

Intensive and massive coal mining causes a series of geological hazards and environmental problems, especially surface subsidence. At present, two major types of subsidence control technology are applied: backfilling technology and partial mining technology. However, the cost of backfill mining is high and partial mining has a low recovery ratio. Therefore, the backfill-strip mining is used to solve the problems of high cost and shortage of filling materials in coal mines at present. A subsidence control design method of backfill-strip mining was proposed in this paper based on the subsidence control effects and economic benefits. First, the stability of the composite support pillar of the filling body and coal pillars in the backfill-strip mining is analyzed, and the values of the main subsidence influencing factors that include the filling material, the size of the backfilling working face, caving mining face, and residual coal pillar are preliminarily determined. Then, the surface movement and deformation are predicted based on the equivalent superposition probability integral method (PIM). The subsidence influencing factors are optimized and determined by comparing the requirements of the safety fortification index of the antideformation ability of surface buildings, resource recovery rate, and coal mining cost. Finally, the mining scheme design parameters of the backfill-strip mining technology are determined. This method is applied in the subsidence control design of backfill-strip mining in the Ezhuang coal mine. Research results show that backfill-strip mining can ensure the safety of surface buildings, increase the resource recovery rate, and reduce coal mining costs through the reasonable design of this method. This study can provide scientific guidance for subsidence disaster control, prevention, and engineering design in backfill-strip mining.

Clean Mining Technology of Waste Not Discharged From Coal Mine

2012 ◽  
Vol 524-527 ◽  
pp. 552-556
Author(s):  
Dong Sheng Zhang ◽  
Tao Dong ◽  
Gang Wei Fan
Keyword(s):  
Coal Mining ◽  
Coal Mine ◽  
The Other ◽  
Mining Technology ◽  
Mining Technique ◽  
Key Points ◽  
Mining Face ◽  
Coal Pillars ◽  
Waste Separation

In order to solve the problem of heaping waste in aboveground, a cleanly mining technique of waste not discharged from coal mine was proposed. It includes two key points as follows: one is waste separation underground; the other is mining technique with preset packing body of waste without coal pillars. After the waste from the coal mining face had been separated out, the waste was used to preset packing body of waste. It is able to decrease stress of mine hoisting. The technique has been successfully used in Gaozhuang Coal Mine.

scholarly journals Application and Development of Smart Mine in China

2019 ◽  
Vol 295 ◽  
pp. 02005
Author(s):  
Ying Xu ◽  
Junqiang Wei ◽  
Xiekang Zhou ◽  
Feng Sun
Keyword(s):  
Coal Mining ◽  
Continuous Improvement ◽  
Mining Technology ◽  
Development Stages ◽  
Mining Areas ◽  
Working Face ◽  
Ancient Times ◽  
Smart Working ◽  
Construction Plans ◽  
Coal Enterprises

The development of coal mining from ancient times to today has experienced the artificial stage, the mechanized mining stage, and the automated mining stage. Now it is developing towards a safer, greener and more efficient unmanned and smart mine. This article suggests that the development of smart mine is a process of continuous improvement. The overall goal of the smart mine is divided into three development stages, from the smart working face and driving face (1.0 era) to the smart of the whole mine (2.0 era), and finally to the subversion of smart mining technology (3.0 era), the state and coal enterprises have given great attention. At present, there are more than 40 mining areas to carry out smart mine construction plans, but there are still many unresolved problems; Finally, it gives a prospect for the development and realization of Smart Mine.

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