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259 results on '"Zhang, Kaizhi"'

12. Mechanistic study of exosomal high expression of miRNA-29b-3p promoting epithelial mesenchymal transition through hypomethylation in biliary atresia liver fibrosis

Author

zhao, xiaohuan, primary, Liao, Yu, additional, Qin, Xudong, additional, Huang, Lu, additional, Zheng, Zebing, additional, Zhang, Kaizhi, additional, Tang, Chengyan, additional, zhu, daiwei, additional, Du, Qing, additional, Li, Zheping, additional, Gong, Yuan, additional, Liu, Yuanmei, additional, and Jin, Zhu, additional

Published
2024
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26. MiRNA-29b Accelerates the PDGF in Exosomes and Stimulates Hepatic Stellate Cells to Promote Liver Fibrosis in Biliary Atresia

Author

Liu, Rui, primary, Zhou, Teng, additional, Zhao, Xiaohuan, additional, Xiong, Xiangang, additional, Zhang, Kaizhi, additional, Zheng, Zebing, additional, Xia, Xingrong, additional, Tang, Chengyan, additional, Gong, Yuan, additional, Du, Qing, additional, Huang, Lu, additional, Zhu, Daiwei, additional, Zhou, Wankang, additional, Liu, Yuanmei, additional, and Jin, Zhu, additional

Published
2023
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36. Analysis for Dynamic Load Behavior of Shield Thrust System Considering Variable Boundary Constraints

Author

Zhang, Kaizhi, Yu, Haidong, Liu, Zhongpo, Lai, Xinmin, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Xie, Ming, editor, Xiong, Youlun, editor, Xiong, Caihua, editor, Liu, Honghai, editor, and Hu, Zhencheng, editor

Published
2009
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37. The Reconfiguration Design of Redundant Thrust of Shields Excavating in Various Geologic Conditions

Author

Yu, Haidong, Liu, Zhongpo, Zhang, Kaizhi, Lai, Xinmin, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Xie, Ming, editor, Xiong, Youlun, editor, Xiong, Caihua, editor, Liu, Honghai, editor, and Hu, Zhencheng, editor

Published
2009
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38. Research on short wall continuous mining technology with full roof falling and roof control measures

Author

Guangli Zhu, Zhang Kaizhi, Yuchen Wang, and Shuli Wang

Subjects
business.industry, 0211 other engineering and technologies, Coal mining, Soil Science, Geology, 02 engineering and technology, 010502 geochemistry & geophysics, Geotechnical Engineering and Engineering Geology, Inner mongolia, 01 natural sciences, Boundary (real estate), Anchor bolt, Work (electrical), Mining engineering, Architecture, Environmental science, Coal, business, Falling (sensation), Roof, 021101 geological & geomatics engineering, 0105 earth and related environmental sciences
Abstract

Short wall mining technology is an important method to coal resource mining in the United States, Australia and other countries, and also one of important methods to boundary coal resource recovery in China. Short wall mining technology through leaving a large number of coal pillars to support and control roof, induces a series of accidents, such as large area roof suspended, collapse and shock, which restricts the further popularization and application of short wall mining technology seriously. By improving the existing short wall mining technology, the article proposed short wall continuous mining technology with full roof falling, and designed measures to control roof. The main research work is as follows: (1) By reducing and eliminating coal pillars in mining section as much as possible, including entry protecting pillar and pillar between caverns, also ensured stability of roof during mining period at the same time; after mining, roof can be collapse, to prevent large area roof suspended and collapsed inducing shock accidents; mining process and equipment of short wall continuous mining technology with full roof falling, were designed comprehensively. (2) Measures to control roof of short wall continuous mining technology with full roof falling are designed, using self-moving hydraulic support to control roof of mining cavern, anchor bolt and cable to ensure branch and cross entries stable during mining period, and forced caving technology to control large area roof suspended; (3) Short wall continuous mining technology with full roof falling and roof control measures were successfully industrialized in 42,210 boundary coal face of Yujialiang coal mine, which belong to Shenhua energy group in Inner Mongolia. The research result is significant to enrich and develop short wall mining technology.

Published
2021

39. Study on Cross Main Tunnel Mining Next to Large Fault Structure

Author

Zhang Kaizhi, Shuli Wang, and Guangli Zhu

Subjects
Hydrogeology, Computer simulation, business.industry, 0211 other engineering and technologies, Coal mining, Soil Science, Geology, 02 engineering and technology, 010502 geochemistry & geophysics, Geotechnical Engineering and Engineering Geology, Fault (power engineering), 01 natural sciences, Rock burst, Mining engineering, Face (geometry), Architecture, Coal, Material failure theory, business, 021101 geological & geomatics engineering, 0105 earth and related environmental sciences
Abstract

Fault structure cut continuity of coal seam, inducing rock burst accident and mine water disaster easily, which bring serious threat to coal resources mining. Working face layout is very important, when next to fault structure and cross main tunnel mining. Based on a mining technical problem in Hongqi coal mine (Jining China), which 3161 working face next to large normal fault F6-2 and cross main tunnel mining, using methods of theoretical analysis and numerical simulation to study the above technical problem. Main research works are as follows: (1) With theory of mining stress distribution, calculate the minimum safety rock pillar thickness, and contrast with the thickness of floor strata, determine feasibility of cross main tunnel mining. (2) According to elastic–plastic failure theory of coal pillar, determine the critical width of coal pillar to keep stable. (3) Using FLAC3D to establish numerical model of 3161 working face mining, analyze distribution and evolution of mining stress. Research results could give a guidance to cross main tunnel mining next to fault structure.

Published
2021

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