Hasitire Kurmanbayi
Xinjiang Transportation Planning Survey and Design Institute Co., Ltd., Urumqi 830000, Xinjiang, China.
*Corresponding author: Hasitire Kurmanbayi
Abstract
The stability of soft rock embankment slopes in red-bed soft rock regions is a key problem in the field of modern geotechnical engineering in arid areas, and it can be significantly affected by environmental changes. This paper provides detailed research about engineering properties, disease mechanisms, and remediation technology for cutting slope along the G575 highway (from Hami to Nanhu section) passing through Paleogene - Neogene Taoshuyuan Formation ($E_3N_1t$). The area researches the extensive occurrences of brick-red and brownish-red mudstones interspersed with gypsum, which are considered exceedingly soft rocks by the natural uniaxial compressive strength tests of 0.172-2.11 MPa. This is in addition to the laboratory findings that these rocks also possess a considerable expansive capability and are categorized as weak to strong expansion according to their free swelling rate. It is found that the main cause of slope failure in this area is a dual disaster mechanism, in which the rock matrix undergoes rapid physical disintegration when in contact with water, and the cyclic volumetric deformation caused by the repeated process of absorbing and evaporating moisture. In order to solve those kinds of things, we’ve made and done a very systematic engineering remedial plan. Use geometric optimization by flattening slope ratios (up to 1:2.5) and having wide platforms together with strong, fully enclosed, solid surface protection systems like masonry plastering, skeleton protection. Roadbed base, deep replacement with lime soil, gravel cushion with geomembrane lining to isolate the roadbed from the underlying expansive rock-soil substrate. These technologies’ applications have successfully controlled slope deformations and have also formed a good theoretical basis and practice reference for highway constructions in these red bed’s soft rocks of a similar kind.
References
[1] Zhang G, Ling S, Xiao C, et al. Crack evolution of soft red-bed rock under drying-wetting cycles. J Rock Mech Geotech Eng. 2025;17(9):5768-80.
[2] Wu J, Han Z, Wang Y, et al. Stress-deformation mechanisms of tunnel support in Neogene red-bed soft rock: insights from wireless remote monitoring and spatiotemporal analysis. Buildings. 2025;15(13):2366.
[3] Yang Z, Zhang Y, Li J, et al. Mechanism and sensitivity analysis of overburden uplift in red-bed soft rock tunnels in Northwest China. Mod Tunn Technol. 2025;62(3):11-8.
[4] Wu J, Cheng G, Jin Z, et al. Characteristics and deformation mechanisms of Neogene red-bed soft rock tunnel surrounding rock: insights from field monitoring and experimental analysis. Buildings. 2025;15(11):1820.
[5] He M, Wei L, Jia Y, et al. Experimental study on the mechanical properties of red bed soft rock during expansion. Water Resour Hydropower Eng. 2019;50(4):171-8.
[6] Huayan Y, Shanpo J, Wenning G, et al. Properties of crushed red-bed soft rock mixtures used in subgrade. Adv Mater Sci Eng. 2016;2016:1-8.
[7] Zhou Y, Chai F, Zhou B, et al. Stability control method and field testing of high embankment with red bed soft rock and soil stone mixture fill roadbed. Appl Sci. 2023;14(1).
[8] Li S, Yang Z, Gao Y, et al. Wetting deformation characteristics of soil–rock mixture considering the water-disintegration of red stratum soft rock. Acta Geotech. 2023;19(7):4381-97.
How to cite this paper
Remediation Technology and Engineering Application of Cutting Slope Diseases in Red Bed Soft Rock Areas
How to cite this paper: Hasitire Kurmanbayi. (2025). Remediation Technology and Engineering Application of Cutting Slope Diseases in Red Bed Soft Rock Areas. Engineering Advances, 5(4), 226-229.
DOI: http://dx.doi.org/10.26855/ea.2025.10.016