Scholarlink

<p>In order to study the effect of water retaining agent content on the shear characteristics of soil-rock structural interface, the water retaining agent contents were set to be 0%, 0.1%, 0.3%, 0.5%, and the water contents were set to be 4%, 7%, 10%, 13%, 16%, and 19%, and the interfacial direct shear experiments were carried out under the normal stresses of 50&#xa0;kPa, 100&#xa0;kPa, 150&#xa0;kPa, and 200&#xa0;kPa. The results show that: when the water retaining agent content is 0.3%, the shear strength of soil-rock interface is the highest, and the value is close to that without water retaining agent when the water content is 4%-13%; with further increase in water content, the shear strength of soil-rock interface with 0.3% water retaining agent content is higher than that without water retaining agent; the internal friction angle at the soil-rock interface with the water retaining agent content of 0.3% is close to that without water retaining agent, and higher than that with other contents; the soil-rock interfacial cohesion at 0.1% and 0.3% water retaining agent is higher than that without water retaining agent; the residual strength ratio at the soil-rock interface without water retaining agent is less than that at the soil-rock interface with the water retaining agent content of 0.3%. The nonlinear constitutive. model of soil-rock interface shear is found by using a hyperbolic model combined with experimental parameters in this paper. Comparing the model data with the experimental data, it is found that the model fits well.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Study on the effect of water retaining agent content on the shear characteristics of soil-rock interface

  • 期刊论文

  • 发表日期：

    2025年5月16日

查看全文
  • Fengzhan Hou,
  • Zhenqiang Ni,
  • Shihao Wang,
  • Wenlan Li,
  • Long Bing

摘要

In order to study the effect of water retaining agent content on the shear characteristics of soil-rock structural interface, the water retaining agent contents were set to be 0%, 0.1%, 0.3%, 0.5%, and the water contents were set to be 4%, 7%, 10%, 13%, 16%, and 19%, and the interfacial direct shear experiments were carried out under the normal stresses of 50 kPa, 100 kPa, 150 kPa, and 200 kPa. The results show that: when the water retaining agent content is 0.3%, the shear strength of soil-rock interface is the highest, and the value is close to that without water retaining agent when the water content is 4%-13%; with further increase in water content, the shear strength of soil-rock interface with 0.3% water retaining agent content is higher than that without water retaining agent; the internal friction angle at the soil-rock interface with the water retaining agent content of 0.3% is close to that without water retaining agent, and higher than that with other contents; the soil-rock interfacial cohesion at 0.1% and 0.3% water retaining agent is higher than that without water retaining agent; the residual strength ratio at the soil-rock interface without water retaining agent is less than that at the soil-rock interface with the water retaining agent content of 0.3%. The nonlinear constitutive. model of soil-rock interface shear is found by using a hyperbolic model combined with experimental parameters in this paper. Comparing the model data with the experimental data, it is found that the model fits well.