Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Yujia Chen"'
Publikováno v:
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects. :1-13
Coal and gas outburst, usually takes place in tectonic soft coal areas. It is generally difficult to obtain soft coal samples, which influences the accuracy of outburst hazard determination of coal...
Autor:
Chenglin Jiang, Xiangyang Gao, Xiaowei Li, Chaojie Wang, Zexiang Tang, Changhang Xu, Yang Du, Yujia Chen, Chao Zhang
Publikováno v:
Processes
Volume 9
Issue 7
Processes, Vol 9, Iss 1101, p 1101 (2021)
Volume 9
Issue 7
Processes, Vol 9, Iss 1101, p 1101 (2021)
The law of gas initial desorption from coals is greatly important for understanding the occurrence mechanism and predicting coal and gas outburst (hereinafter referred to as ‘outburst’). However, dynamic characterization of gas initial desorption
Publikováno v:
Powder Technology. 345:775-785
In order to study the hydrodynamics characteristics of gas-solid two-phase flow in the two-stage series riser, a filtered two-fluid model considering filter size, filtered solids volume fraction and slip velocity is used. Comparing to simulated resul
Publikováno v:
Powder Technology. 338:119-128
Flow behavior of particles is simulated by means of two-fluid model combining with kinetic theory of granular flow in a gas-solid stirred fluidized bed with a frame impeller. The Huilin-Gidaspow drag model is used to obtain the interphase interaction
Autor:
Wang Chaojie, Shengqiang Yang, Zhang Chaojie, Tang Jun, Xiaowei Li, Chenglin Jiang, Dingding Yang, Yujia Chen
Publikováno v:
Journal of Natural Gas Science and Engineering. 45:502-510
The gas pressure of a coal seam is one of the important parameters for studying gas reserves, law of gas flows, gas emissions, predicting coal and gas outburst risks and developing gas-control measures. In this study, the effects of the depth of the
Comparative experimental study of methods to predict outburst risk when uncovering coal in crosscuts
Publikováno v:
Fuel. 288:119851
Currently, there are many methods to predict outburst risk when uncovering coal in crosscuts. When used, these prediction methods produce inconsistent prediction results. Consequently, engineers at the mining site are often at a loss on how to procee
Publikováno v:
Arabian Journal of Geosciences. 11
In the process of working face advance in longwall coal mining, a great deal of gas relieved by the strata adjacent to the mining coal seam and the residual coal in gob migrates to gob. If the gas drainage method in gob is unreasonable, gas will accu
Publikováno v:
Journal of Petroleum Science and Engineering. 196:107745
The hydraulic pulse jet is a high-efficiency drilling technology to improve the efficiency of bottom-hole cuttings removal by enhancing the down-hole flow of cuttings. In this paper, an Eulerian-Eulerian two-fluid model on the basis of the kinetic th
Publikováno v:
Journal of Natural Gas Science and Engineering. 30:276-283
Given the increasing exploitation depth, outburst under the condition of uncovering coal in crosscut is increasingly dangerous. To prevent the occurrence of outburst, a novel forecast indicator, which is the initial volume of gas emission from the bo
Publikováno v:
Fuel. 267:117229
This study developed a platform for determination of the predictive index for outbursts by simulating the field working face of coal roadway and a system for determining briquetting pressures of coal briquettes. Taking a predictive index called the '