Zobrazeno 1 - 10
of 319
pro vyhledávání: '"red-bed"'
Publikováno v:
地质科技通报, Vol 43, Iss 5, Pp 81-94 (2024)
Objective In the gentle slope zone of the Dongying Depression, the first member of the Kongdian Formation and the lower part of the fourth member of the Shahejie Formation can be split by a distinctive assemblage of reddish sediments, which originate
Externí odkaz:
https://doaj.org/article/38dde21514364fb6b818a1de6277dc94
Publikováno v:
Journal of Rock Mechanics and Geotechnical Engineering, Vol 16, Iss 9, Pp 3641-3660 (2024)
Micron-scale crack propagation in red-bed soft rocks under hydraulic action is a common cause of engineering disasters due to damage to the hard rock–soft rock–water interface. Previous studies have not provided a theoretical analysis of the leng
Externí odkaz:
https://doaj.org/article/032e2e41108d4b448fe03030df526edb
Autor:
Shenggen HUANG, Mingjian HE
Publikováno v:
地质科技通报, Vol 43, Iss 4, Pp 235-243 (2024)
Objective This study focused on the surface energy characteristics of red-bed soft rocks during disintegration in the Shengzhou-Xinchang area of Zhejiang Province. Methods Based on the principle of energy dissipation, this study analyzed the conversi
Externí odkaz:
https://doaj.org/article/0380505e8e5c476592b08a41bffc81f4
Publikováno v:
Solid Earth Sciences, Vol 9, Iss 3, Pp 100187- (2024)
The formation of continental red beds is generally considered to be related to an arid climate. Heating experiments (performed by L.J. and G.C.) using dried black mud sediment also demonstrate that the reddening may be caused by the transformation of
Externí odkaz:
https://doaj.org/article/78307e1218bb4c11a85eaeefdf385083
Publikováno v:
Journal of Rock Mechanics and Geotechnical Engineering, Vol 16, Iss 5, Pp 1847-1863 (2024)
In this study, the axial swelling strain of red-bed mudstone under different vertical stresses are measured by swell-under-load method, and the microstructure of mudstone after hygroscopic swelling is studied by mercury intrusion porosimetry (MIP). T
Externí odkaz:
https://doaj.org/article/8e49ca46641046a9adf5dcd132a7b06b
Autor:
Jun Zhang, Yang Guo, Kai Huang, Wei Cui, Zhaibang Ke, Xiaochuang Chen, Tengsheng Yue, Kun Gao
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-14 (2024)
Abstract The disintegration of red-bed soft rock exhibits a strong correlation with various geological disasters. However, the investigation into the evolutionary mechanisms underlying disintegration breakage has not yet received extensive exploratio
Externí odkaz:
https://doaj.org/article/ec43488a0c9b4befac2873536b46895b
Publikováno v:
Frontiers in Earth Science, Vol 12 (2024)
In the red-bed areas of southwestern China, subgrade uplift deformation poses a serious safety concern for high-speed trains. However, the subgrade uplift mechanisms are still not well-defined, and there is a lack of effective prediction methods for
Externí odkaz:
https://doaj.org/article/0a1b96a9901b466d8b63b0aa43e004e0
Publikováno v:
地质科技通报, Vol 43, Iss 1, Pp 253-261 (2024)
Objective The red-bed soft rocks is easy to disintegrate and weaken its strength when it encounters water, which is easy to cause poor stability and economic loss or even casualties in slope construction. It is of great significance to reveal the var
Externí odkaz:
https://doaj.org/article/4d5d5356a2f94ccdb21bcb0ecf080f2c
Publikováno v:
Frontiers in Environmental Science, Vol 12 (2024)
The evaluation of geological suitability for urban underground space (UUS) development is an indispensable prerequisite for its optimal utilization. As the actual carrier of underground facilities, the evaluation of rock mass quality plays a crucial
Externí odkaz:
https://doaj.org/article/d7c7ab6325444e42a42053988ab13ba9