Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Yujia Chen"'
Publikováno v:
IEEE Geoscience and Remote Sensing Letters. 18:162-166
Although accurate training and initialization information is difficult to acquire, unsupervised hyperspectral subpixel mapping (SPM) without relying on this predefined information is an insufficiently addressed research issue. This letter presents a
Publikováno v:
Journal of Petroleum Science and Engineering. 208:109395
Flow behaviors of the heavy oil and its asphaltic residues in a horizontal pipe are simulated using a filtered liquid-solid two-fluid model. The filtered liquid-solid two-fluid model systematically filters the highly resolved simulation results. The
Publikováno v:
Journal of Natural Gas Science and Engineering. 50:157-165
Coal and gas outbursts are a rapid and powerful energy-releasing process. The damage to coal and the release of gas in the initial stage play key roles in the occurrence of outbursts. Existing studies have mainly focused on the gas desorption process
Publikováno v:
Mining Technology. 127:92-102
In this study, we propose a set of rapid prediction technologies for the outburst risk of coal uncovering in crosscuts and shafts (CUCS). These technologies are needed because of the ideal model to uncover coal in crosscuts and the law that coal seam
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
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. 34:412-418
The advantages and disadvantages of existing methods for predicting coal and gas outbursts in coal roadways were analyzed, and the primary factors influencing coal and gas outbursts, including the expansion energy of the initially released gases, wer
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
Autor:
Xiao-wei Li, Fa-kai Wang, Fei-long Yang, Chenglin Jiang, Yujia Chen, Zhang Chaojie, Tang Jun, Chen Wang, Shu-hua Deng
Publikováno v:
Mining Science and Technology (China). 19:756-760
Given the problem of the long time required for testing gas pressure, we propose a fast-test method in which we used a technique of fast borehole sealing and air replenishing. Based on the characteristics of gas emission from boreholes to be tested,
Autor:
Shu-wen Lv, Xiao-wei Li, Fei-long Yang, Yujia Chen, Ying Liu, Song-li Cheng, Chen Wang, Zhang Chaojie, Su-hua Deng, Tang Jun, Fa-kai Wang, Chenglin Jiang, Qingxue Xie
Publikováno v:
Journal of China University of Mining and Technology. 18:494-499
The determination of gas pressure before uncovering coal in cross-cuts and in shafts is one of the important steps in predicting coal and gas outbursts. However, the time spent for testing gas pressure is, at present, very long, seriously affecting t