Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Dezhong KONG"'
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 7, Pp 11-22 (2024)
In order to study the stability and influencing factors of the end face roof of the full-mechanized mining face, a mechanical model of tip-to-face roof stability was developed in this study with a combination of the energy method and the “roof-supp
Externí odkaz:
https://doaj.org/article/7bfd274ddb414f34bbbe21be20d4012e
Publikováno v:
Energy Science & Engineering, Vol 11, Iss 8, Pp 2818-2830 (2023)
Abstract Borehole destabilization damage is an important factors affecting gas extraction efficiency. To derive the fracture development law, strain, and energy evolution characteristics of different borehole diameters, uniaxial compression experimen
Externí odkaz:
https://doaj.org/article/a7bc1d89122146aa8131b8c608aa4a30
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-15 (2023)
Abstract The overlying strata of the lower coal seam is easy to be collapsed causing the roof caving accident at the end face of the mining working face under repeated mining in close-distance coal seams. In order to predict the roof instability of t
Externí odkaz:
https://doaj.org/article/4a759ddf81d945c9955540b3e44a47fe
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-14 (2022)
Abstract Aiming at the problem of coal face failure of lower coal seam under the influence of repeated mining in close coal seams, with the working face 17,101 as a background, the coal samples mechanics test clarified the strength characteristics of
Externí odkaz:
https://doaj.org/article/56816faed2ad49b6b3d9d6835e68b803
Autor:
Gaofeng Song, Shiqin He, Xiaoruan Song, Zhongjian Duan, Yatao Zhang, Dezhong Kong, Miansong Huang
Publikováno v:
Geomatics, Natural Hazards & Risk, Vol 12, Iss 1, Pp 2155-2169 (2021)
This work proposed a composite soil reinforcement method to support the vegetation growth and improve slope stability using geocell structures and wheat straws. Twelve physical models were developed for assessing rainfall intensities, slope steepness
Externí odkaz:
https://doaj.org/article/2d2a221bfde8481cad2eb6fa1991bb01
Publikováno v:
BMC Health Services Research, Vol 20, Iss 1, Pp 1-11 (2020)
Abstract Background As the gatekeepers of rural residents’ health, teams of village doctors play a vital role in improving rural residents’ health. However, the high turnover of village doctors, both individually and collectively, threaten the st
Externí odkaz:
https://doaj.org/article/10c35be2407b48f2adea67b399aaf73a
Autor:
Liang Ou, Zhen Shen, Tiantian Zhang, Zehua Chen, Lin Zhang, Daoqing Xu, Dezhong Kong, Qi Qi, Yanchang Huang, Weichen Huang, Yingfu Meng
Publikováno v:
Frontiers in Medicine, Vol 8 (2022)
Background: Postoperative cognitive dysfunction (POCD) is a common surgical complication in elderly patients undergoing hip and knee replacement. Electroacupuncture (EA) may have a protective effect on postoperative cognitive function, but relevant e
Externí odkaz:
https://doaj.org/article/7b0cf8fb8a1249f3a02dd12c6aa68ee0
Publikováno v:
Geofluids, Vol 2022 (2022)
In order to study the influence of roof stress and fracture distribution characteristics on the stability of stope surrounding rock under repeated mining in close-distance coal seams, the research background of this paper is the close-distance coal s
Externí odkaz:
https://doaj.org/article/230ef8d3db5d48d29e56bf0e0b037c21
Publikováno v:
Advances in Materials Science and Engineering, Vol 2022 (2022)
In order to analyze the influence degree of different factors on gas extraction radius, on the basis of coal seam gas flow theory and elastic mechanics, considering the influence of coal seepage rate change on gas flow, the COMSOL Multiphysics numeri
Externí odkaz:
https://doaj.org/article/b6a92479f8e24732aa153b4a3120d9c5
Publikováno v:
Geofluids, Vol 2022 (2022)
The existence of fault structures often seriously endangers the safe production of coal mines. In order to ensure the safe and efficient production of close coal seam group mines under the influence of faults, it is of wide engineering significance t
Externí odkaz:
https://doaj.org/article/3f6c29cb48124fa6a255271f0446b4fd