Mechanics and Erosion Test of Slope Soil Stabilized by High Polymer-Ionic Curing Agent
ZHOU Yuntao1,2,3,*, LIANG Jiong1,2,3,*
1 Institute of Exploration Technology, CAGS, Chengdu 611734, China 2 Technology Innovation Centerfor Risk Prevention and Mitigation of Geohazard, Ministry of Natural Resources, Chengdu 611734, China 3 Technology Center of Risk Prevention and Mitigation of Geohazard, China Geological Survey, Chengdu 611734, China
Abstract: Slope surface instability and soil erosion of high steep slopes with clastic mass are the main types of ecological disasters in the southwest alpine mountains. Slope surface solidification is a common means to control the clastic slope instability, however, the existing soil curing agents are difficult to realize both the soil surface solidification and vegetation growth of the slope. To meet the need of ecological treatment of high steep slope with clastic mass, a new type of high polymer-ionic curing agent material was developed, which is composed of polymerization liquid and ionic curing agent. Through direct shear test and erosion test of solidified soil, the law of increasing strength (cohesion, internal friction angle, equivalent internal friction angle) of different types of soil after solidification with the concentration of curing agent and time was revealed. The law of soil erosion amounts under three curing methods:no curing, uniform curing and grouting curing was discussed. The test results show that the high polymer-ionic curing agent material can significantly increase the cohesion of soil, while its internal friction angle is little improved. High polymer-ionic curing agent is more likely to achieve sustained curing effect for the soil with a higher clay content, and the curing effect tends to be more significant with a higher curing agent concentration. Both uniform curing and grouting curing can significantly improve the anti-erosion ability of the slope. In order to reduce the disturbance of the soil structure of the slope, it is recommended to adopt the method of grouting solidification for the control of high steep slopes with clastic mass. The findings have guiding significance for ecological management and design of high steep slopes with clastic mass.
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2025, Vol. 39 
