Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Chaowen Hu"'
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-16 (2024)
Abstract During the process of close-distance seam group mining, the coal pillar in the upper coal seam is a stress-concentrated area, which leads to a loss of stability of the roadway during mining of the lower coal seam. This lack of stability intr
Externí odkaz:
https://doaj.org/article/99490f123b4045bf804cf2f1ebbe80bf
Publikováno v:
Shock and Vibration, Vol 2022 (2022)
Filling mining is a main technology of mining coal resources under buildings, and it has a good effect on preventing ground subsidence. Taking Wangtaipu coal mine of the Shanxi Jincheng Anthracite Coal Mining Group as the engineering background, in o
Externí odkaz:
https://doaj.org/article/100d5efaab704f55a942d52e16b6fb33
Publikováno v:
Shock and Vibration, Vol 2020 (2020)
The controlling effect of vertical stress of mountainous region on gas occurrence of the coal seam below it has always been ignored. In order to clearly express its influence mechanism, the change laws of depth, stress, and permeability of coal seam
Externí odkaz:
https://doaj.org/article/92080d4c31a14d80896a1647505bf6bd
Publikováno v:
Advances in Civil Engineering, Vol 2020 (2020)
As the mining depth increases, under the influence of high ground stress, the surrounding rock of deep mine roadways shows soft rock characteristics. Under the influence of mining disturbance at the working face, large deformation of the roadway has
Externí odkaz:
https://doaj.org/article/ea135a25bef2448487fa88fbb8383714
Autor:
Xiaojie Yang, Chaowen Hu, Manchao He, Haohao Wang, Yubo Zhou, Xiaoyu Liu, Enze Zhen, Xingen Ma
Publikováno v:
Shock and Vibration, Vol 2019 (2019)
In order to solve the problem of roadway deformation based on the theory of “short cantilever beam by roof cutting,” the method of “pressure relief by roof cutting in the adjacent roadway” is proposed. Through presplitting blasting the roadwa
Externí odkaz:
https://doaj.org/article/859b6b27dfa94cb4a714ffa5724ef26c
Publikováno v:
Advances in Materials Science and Engineering, Vol 2019 (2019)
The effective control of large roadway deformations has always been a focus and difficulty in the coal industry. At present, a “bolt + cable + mesh + shotcrete” combined support structure has been widely used in China to support roadways with lar
Externí odkaz:
https://doaj.org/article/4c8586082f9b44f5ae8e6546e356d49b
Publikováno v:
Mining, Metallurgy & Exploration. 40:463-474
Publikováno v:
Geotechnical and Geological Engineering. 40:3067-3074
Publikováno v:
Sustainability; Volume 14; Issue 16; Pages: 9941
In order to ensure the application of gob-side entry retaining by roof cutting for thick and hard sandstone roofs, the key technology of pre-split blasting was studied. The LS-DYNA was used to analyze the blasting effect of the energy-gathering pipe.
Publikováno v:
BMC Complementary Medicine and Therapies, Vol 24, Iss 1, Pp 1-12 (2024)
Abstract Background Polygonum multiflorum (PM), a widely used traditional Chinese medicine herb, is divided into two forms, namely raw polygonum multiflorum (RPM) and polygonum multiflorum praeparata (PMP), according to the processing procedure. Emer
Externí odkaz:
https://doaj.org/article/5cd65e8b1c1e48d5b7bf51f40558bccf