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Self-recovery ability of stress-damaged salt rock experiment
After being compressed to different plastic deformation stages, the salt rock samples with lateral stress damage of 0.2, 0.3, 0.4, and 0.5 were...
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Study on the characteristics of grout permeation based on cylindrical diffusion
Permeation grouting is widely applied for its low grouting pressure and minor disturbance to the stratum in grouting engineering, especially in...
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Effect of refractory agent on ash fusibility temperatures of briquette
To solve the problem of the low ash fusion point of briquette, this paper reported that the ash fusibility temperatures can be elevated by changing...
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Study on the pyrolysis behavior of Shendong Shangwan coal and its macerals concentrate
The pyrolysis characteristics of Shendong Shangwan coal and its macerals concentrate were investigated using thermogravimetry (TG) coupled with mass...
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Status quo and prospect of the development for underground coal mine refuge chamber
As one form of the energy resources, coal is becoming more and more important. Due to the particularity in coal mine production, mine accidents some...
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Modern tectonic stress field deeply in Xuzhou Coal Mine
By inverting fault slip data, the parameters of 12 tectonic stress tensors in the mine region can be determined. The following characteristics can be...
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A new model to predict roadheader performance using rock mass properties
Prediction of roadheader performance plays a significant role in the plan of tunnel construction, which is influenced by different key parameters,...
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Analysis of the mechanical property of mudstone/shale in paralic coal measures and its influence factors
The mechanical property of mudstone/shale in coal measures is a key factor of engineering mechanics that influences the development of shale gas. A...
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Maximum likelihood channel estimation algorithm combines logarithm likelihood ratio decoding in the coal mine application
The environment of the wireless communication system in the coal mine has unique characteristics: great noise, strong multiple path interference, and...
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Study on the basic nitrogen compounds from coal-derived oil
The distillation range analysis and elemental analysis of fractioned direct liquefied oil were conducted. Each fraction of liquefied oil contains...
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Integrated utilization of low-grade thermal energy in hot coal mine
This paper explores the integrated utilization of low-grade thermal energy in hot coal mines, based on analysis of original heating, refrigerating,...
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Experimental study on the type change of liquid flow in broken coal samples
A test system of the permeability of broken coal samples mainly consists of a CMT5305 electronic universal test machine, crushed rock compaction...
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Geologically controlling factors on coal bed methane (CBM) productivity in Liulin
It is of great significance to forecast high yield of CBM wells and analyze dynamic production by having an overall study on the characteristics of...
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Research on temperature rise of hoisting machine disk brake
A mathematical model and finite element model for analysis of temperature rise of the hoisting machine brake system was constructed, limit conditions...
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The enrichment characteristics and geological controlling factors of coalbed methane occurrence in Laochang area, Yunnan Province
The enriched characters of methane content in the main coal seam of Yunnan’s Laochang coal mine was analyzed through combined with the geologic...
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Prediction of methane emissions during the extraction of close-to-roof layer of a seam of large thickness
Prediction of methane emissions at the stage of longwall planning constitutes the basis for the determination of the appropriate method and...
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Experimental study on effects of CBM temperature-rising desorption
To study the effects of CBM (coal bed methane) temperature-rising desorption, isothermal adsorption/desorption experiments on three ranks...
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The whole process confirmation management and its application in coal mine safe production
After analyzing the reasons for coal mine accidents and the current management methods, effective actions for the implementation of safety management...
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Automatic lifting system design and application of large load powered support test rig
This paper presented a design of an automatic lifting system. It is used for large load powered support and improves the old method wherein powered...
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Design of intrinsically safe power supply
Aiming to make a high power direct current supply safely used in coal mine production, this paper made a deep research on characteristics of...