Search
Search Results
-
Computation model of proppant embedment depth based on dimensional analysis
Hydraulic fracturing is designed to form a high-conductivity fracture. The proppant will embed into the formation rock, especially in soft rock,...
-
Experimental study on slime water flocculation sediment based on the montmorillonite hydration expansion inhibition
Through the montmorillonite settlement experiment in the clear water and electrolyte solution, the influence of slime water settling character was...
-
Determination of the gas compositions for direct coal liquefaction by gas chromatography
Via multi-dimensional gas chromatography, configured with parallel dual-channel, double detectors, valves switching and back flushing, rapid analysis...
-
Numerical modeling of time-dependent closure of coal seam artificial fractures
In order to improve efficiency of coal seam gas drainage, many fracturing techniques, such as waterjet fracturing, hydraulic fracturing and explosive...
-
Application of double-layer Ether CAT and optical fiber interlock net in short circuit protection
The selectivity of short circuit protection of high voltage lines in coal mines cannot be realized by existing protection systems. To solve this...
-
Evaluation method of coal rank based on X-ray diffraction analysis—an example from SE Qinshui Basin
Based on analysis on X-ray diffraction, the metamorphic grade of coal in southeast Qinshui Basin was discussed, and a precise evaluation of coal rank...
-
Technological optimization of fully mechanized caving mining face with large mining heights
Fully mechanized cave mining with large mining height is a new mining method, due to its large mining thickness and lower roadway excavation, the...
-
Experimental study on the pressure control of soil chamber in shield tunneling
A mathematical model of the soil pressure system in shield tunneling was proposed to optimize soil pressure control in the soil chamber, based on the...
-
Numerical simulation on pressure-relief deformation characteristics of underlying coal-rock mass after upper protective layer excavation
Based on the occurrence features of Group B coal-seams at a coal mine in the Huainan coal mining area, the elasto-plastic mechanical damage...
-
High rank coalbed methane desorption characteristic and its application in production in Qinshui basin
Based on spontaneous desorption characteristic, the correlation of desorption time and gas content was analyzed and the application of it in...
-
Study on explosion process of methane-coal dust mixture
The experimental system of 10 m 3 large-scale multiphase combustion explosion tank was used for research into the explosion development process under...
-
Study on the influence of crown ether on arsenic behavior during coal pyrolysis
The influence of crown ether on behaviors of arsenic at different temperatures and residence time was investigated during the pyrolysis of Tuanbo...
-
Characteristics of produced water during coalbed methane (CBM) development and its feasibility as irrigation water in **cheng, China
Water resources are scarce in **cheng. Huge quantities of water are pumped out in the dewatering course, and the disposal of CBM water is one of the...
-
Review on safe blasting technology in high-temperature coal seams in China
In order to define the development direction of safe blasting technology in high-temperature coal seams in China, this paper presents a systematic,...
-
Flotation characteristics of Shenfu coal macerals
The flotation characteristics of Shenfu coal macerals was researched. Taking flotation recovery and enrichment of macerals as the evaluation objects,...
-
Coal matrix deformation characteristics in the process of carbon dioxide displacing different gas saturation coal-bed methane
It is fundamental that changes in coal reservoir permeability are researched, in particular, the accurate determination of variations in the coal...
-
Atomic force microscopy study on microstructure of various ranks of coals
As a new technology, Atomil Force Microscopy (AFM) is being used in the research of microscopic structure on coal surface in recent years. By this...
-
Application of DC component to select fault branch in arc suppression coil grounding system
When single phase earth fault occurs in the arc suppression coil grounding system, the amplitude of the transient capacitance current is high and...
-
Experimental analysis on bolt interference during advanced water detection with the mine transient electromagnetic method
During advanced water detection using the transient electromagnetic method, the exploration effect for water-rich area is often poor due to the...