Zobrazeno 1 - 10
of 238
pro vyhledávání: '"Jianping Wei"'
Publikováno v:
Meitan xuebao, Vol 49, Iss 9, Pp 3829-3844 (2024)
The enhanced coalbed methane (ECBM) technology has the potential to enhance coal seam gas extraction efficiency, while also achieving CO2 storage, thereby promoting the dual carbon reduction goals. It holds broad prospects for its application in unco
Externí odkaz:
https://doaj.org/article/e96e8d0464d64f33bf51da7af8c0e654
Autor:
Dengke WANG, Yu FANG, Jianping WEI, Hongtu ZHANG, Lizhen ZHAO, Longhang WANG, Yuandi XIA, Lu LI, Shaopu WANG, Qiang ZHANG, Haihui REN
Publikováno v:
Meitan xuebao, Vol 49, Iss 8, Pp 3439-3452 (2024)
To address the challenges of fracture recognition in the CT scanning images of coal or rock, particularly the interference of gangue and the recognition of fractures at different scales, proposed and implemented a network model for coal-rock fracture
Externí odkaz:
https://doaj.org/article/b6bd98541b4843488c3f57556bb0a2ec
Publikováno v:
Meitan xuebao, Vol 49, Iss 7, Pp 3129-3142 (2024)
The supercritical carbon dioxide (SC-CO2) jet has a wide application prospect in drilling engineering, and its low coal breaking pressure threshold and high efficiency can improve drilling efficiency. But it has the problems of high coal breaking thr
Externí odkaz:
https://doaj.org/article/823f1bfabc414ed3993df878591cfc1c
Publikováno v:
Meitan xuebao, Vol 49, Iss 6, Pp 2675-2690 (2024)
The SC-CO2 jet drilling and completion technology can ensure the stability of coalbed methane wells, improve drilling speed and rock breaking efficiency, and has a wide application prospect. However, the high energy consumption and complex system of
Externí odkaz:
https://doaj.org/article/c8285eb21fee4d108ad31bad8b14e307
Publikováno v:
Meitan xuebao, Vol 49, Iss 3, Pp 1704-1716 (2024)
Cutter wear and frequent cutter change in hard rock tunneling are the main factors limiting an efficient tunneling. Low-pressure abrasive air jet assisted cutter rock breaking is a feasible idea to break through the bottleneck of rock breaking techno
Externí odkaz:
https://doaj.org/article/516f9fa1fb194758b45550cd6eadb2f4
Autor:
Dengke WANG, Liyuan ZHANG, Jianping WEI, Hailong DU, Zhen LI, Zhiming WANG, Bowen DONG, Fukai ZHANG, Yanbo YIN, Hongtu ZHANG, Yanzhao WEI
Publikováno v:
Meitan xuebao, Vol 49, Iss 3, Pp 1432-1446 (2024)
Using an impact damage-percolation experimental system for gas-bearing coal or rock, the authors carry out various gas-bearing coal impact experiments with in-situ seepage tests to reveal the law of dynamic mechanical characteristics, fracture expans
Externí odkaz:
https://doaj.org/article/beb962e4e0434eb090543efab45b51a7
Publikováno v:
Meitan xuebao, Vol 49, Iss 2, Pp 801-832 (2024)
With the gradual implementation of China’s deep-earth engineering strategy, deep resource extraction and underground space construction have brought in some new opportunities, but they also face many challenges, with extreme geological conditions s
Externí odkaz:
https://doaj.org/article/8031d8b694f14f6da5ee4791325d11c9
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 3, Pp 1110-1123 (2024)
Abstract With the application of new technologies for coal mine gas control, it has been increasingly urgent to apply the fixed‐point closed sampling (FPCS) technology for accurate measurement of coal seam gas content. In this study, gas desorption
Externí odkaz:
https://doaj.org/article/c5823bd6386c437ab4a89c6123d316b8
Autor:
Tianxuan Hao, Lizhen Zhao, Dengke Wang, Jianping Wei, Yang Du, Yanbo Yin, Yiju Tang, Zhigang Jiang, Xu Chen, Yanzhao Wei
Publikováno v:
Geomatics, Natural Hazards & Risk, Vol 15, Iss 1 (2024)
In actual coal mining operations, hazards like coal and gas outbursts pose significant threats to safety. Extracting coal seam gas through boreholes is the main method of coal mine gas disaster management. Currently, coal seam gas pressure often obta
Externí odkaz:
https://doaj.org/article/68858a1cad6141779a71c38c874254f5
Publikováno v:
Meitan xuebao, Vol 48, Iss 11, Pp 4097-4111 (2023)
Cement-based materials are the most commonly used grouting and sealing materials in underground coal mines, but due to the effects of stress perturbation as well as water loss and shrinkage of cementitious materials, the traditional cementitious mate
Externí odkaz:
https://doaj.org/article/66ae067bc2094a12b63daa8c95b7c075