Fitting varigram of coal bed evaluation with GEO-EAS software
With the large amount exploitation of coal underground, theshifting of the space in coal bed caused land subsidence.
Research on splitting technical of coal bed deep-hole cumulative blasting to improve permeability
The new technology application of consolidation coal bed floor by grouting in Cambrian period limestone
The existing mine gas in coal bed occurs mostly in the free state,the adsorption state and the dissolved state.
Methanol and its derivatives, acetylene chemical industry, coarse benzene processing, chemical fertilizers, coal tar deep processing, coal combined oil and the all-round utilization of coal bed methane and coke oven gas and so on.
The emphases of this study are the stratigraphic subdivision, correlation and the distriBution of Carboniferous and Permian in the coal bed of Jiyang Depression of Shandong.
The engineers and technicians of Pinghu coal industry finally solved the problems of dust caught and removal which exist in the construction of pressing the wind platoon the coal bed.
The testing results are listed, and the obtained parameters can be widely used in hydraulic fracturing optimization design of coal bed, calculation of in situ stress and other engineering problems.
It is found that the appropriate lowering of the chamber temperature of water gas producer and the thickness of coal bed is favorable to controlling the volume fraction of O2 and CO in the recovered flue gas.
The relationship between the permeability of coal bed and production curve about coal-bed methane vertical wells
Study and practice of hybrid coal bed gas drainage by surface drilling
Surface borehole well is a simply and high performance method to drawing coal bed and goaf gas which controlling and making good use of the coal mine gas.
A steeply inclined downward running ribbed belt conveyor is developed according to the funnel layout at Xieyi coal mine in Huainan to meet the demand in coal mining with inclined coal bed.
Regarding the extremely thin coal bed coal and the gas prominentpossibility analysis, in formerly practiced was a blank, therefore inthe production process knew and took the degree to be insufficient.
The effect of the parameters reflecting formation energy as the ground stress, formation pressure, the water abundance of coal bed and the elastic energy of water body, etc.
overall thickness of coal bed
The mining of shallow coal bed in Shenfu Mine is seriously threatened by suffosion hazard of coal shaft.
Zhangji ore B group of coal bed depth portion working area gas comprehensive program of public order engineering research
The neighborhood of branching mergence line of Wu 9-10 coal bed is the belt of gas outburst and the counterparts of other coal beds may be the dangerous belts of gas outburst.
This paper introduces the characteristics, reserves, productivity, consumption and perspective of high calorific value gas fuel, and introduces the nature gas, the coal bed gas and the gas-hydrate.
Comparison of coal gasification methods among different coal bed and selection of its technology
Reserving space for lane along the tunnel under the condition of soft coal bed,compound roof supports and protections;
The results from resource predication indicate the coal bed gas distributes mainly in the mine districts such as Huangshi, Puxi, Changyang, Jingdang etc.
The characteristics of damage, movement, evolution in mining coal bed in weathered zone were discussed mainly.
Arrow plans a much smaller LNG plant across the bay from Curtis Island at Fisherman's Landing, which would take its coal bed methane production for export.
Dynamic variation character of coal bed methane reservoir permeability during depletion
Building coal bed geological model by SURFER
The caving reasons of the rib area in front of supports is analyzed, at the fully mechanized caving coal face, in the hard roof, soft coal, soft bottom and large inclination thick coal bed.
Through pulling out gas continuously, the gas quantity was reduced and the gas burst of 13-1 coal bed was eliminated, and safe high-speed driving and high efficiency were realized.
