【摘 要】
：
Summarized the four main sources of CO gas on the working face based oninvestigation and local observation: firstly, it analyzed the mechanism that CO gas wasproduced by spontaneous combustion and oxygenation of gob residual coal; next, it illus-trated th
【机 构】
：
College of Energy Engineering, Xi’an University of Science & Technology, Xi’an 710054, China;Ningxia
论文部分内容阅读
Summarized the four main sources of CO gas on the working face based oninvestigation and local observation: firstly, it analyzed the mechanism that CO gas wasproduced by spontaneous combustion and oxygenation of gob residual coal; next, it illus-trated the theory that special coal seam deposits natural CO gas, and provided correlativeexperiment data; and then, it illustrated the reason of the CO gas in working face in-creased relatively in the course of coal cutter\'s shearing, according to the translation be-tween mechanism energy and inner energy and the rupture of carbon molecule side chainduring coal exploitation; lastly, illustrated the reason of CO gas appearance and the rela-tively release quantity during coal mine blasting underground. We find out the source ofCO gas on the working face accurately, and provide advantages for appropriate preventionand practical management measures.
其他文献
A novel technique for the quick measurement moisture content of coal powder by microwave was studied. The effects of the various moisture contents on the measurement results were also discussed. The experimental results show that the standard deviation is
Low energy arc discharge characteristics was analyzed based on dynamic V-A characteristics model. It draws conclusions that discharge time relates to the source voltage and the product of inductance and stable current, discharge time will increase when th
The model of catastrophic destabilization of tunnel under rock slipping in fault zone based on catastrophic theory and the potential function of fault movement were presented. On the basis of the results above, through Taylor series expansion of the equat
A new multifunctional testing device for rock fragmentation was introduced, which can conduct many experiments such as single cutting under static load, crushing under impact load, thrusting under static load and cutting-impact test under the dynamic and
It is highly important to investigate relationship between coal characteristics and methane adsorption on coal in the fields of coalbed methane recovery. Based on data examination of coal quality indexes collected from the literatures, regression equation
This article was written according to the security information theory and the security cybernetics basic principle, for reducing the accident risk effectively and safeguarding the production safety in coal mine. First, each kind of risk characteristic has
The develop actuality and direction of FRP(fibre glass reinforced plastics) bolt in the world are analyzed. The new type structure of FRP bolt was designed. Trial data indicate that, all kinds of capability target of this FRP bolt all achieve and exceed t
In order to design a new technological process system to take the polymeric ferric aluminum silicate sulfate(PFASS) and to apply it in wastewater processing, the chemical composition analysis was carried on to the Fuxin gangue, adopted the orthogonal expe
The invertible of the Large Air Dense Medium Fluidized Bed (ADMFB) were studied by introducing the concept of the inverse system theory of nonlinear systems.Then the ADMFB, which was a multivariable, nonlinear and coupled strongly system,was decoupled int
Two Zn-based sorbents, L-991 and L-992 used for hot 9as desulfurization (HGD) were introduced. Zn/Ti ratio of the two sorbent was 1:1 and 2:3 resptively and a certain proportion of Cu and Mn metal oxide were added into L-992, which provided better perform