Deep covering layer rock-soil quality engineering geology grading method

Abstract

The invention discloses a deep covering layer rock-soil quality engineering geology grading method. The method comprises the following steps that 1, analyzing the particle group, the stacking age, theparticle size, the genetic type and the engineering geology characteristic of rock-soil respectively; 2) judging whether the rock-soil is first-grade rock-soil or second-grade rock-soil according tothe step 1); 3) judging whether the bearing capacity of the rock-soil meets the construction requirement or not according to the grading result of the step 2), wherein the judgment result is that thebearing capacity of the first-grade rock-soil meets the construction requirement, and the bearing capacity of the second-grade rock-soil does not meet the construction requirement. According to the invention, the rock-soil quality condition of the deep covering layer can be better grasped; the classification principle is scientific, simple and effective, the traditional and universal properties are considered, the stability service of the deep covering layer in the hydropower and hydraulic engineering area is better and reasonably evaluated, the substance components and structural characteristics of the deep covering layers in different areas and different drainage basins have a close relationship with the engineering properties of the deep covering layers, and the foundation is provided for engineering geological classification of the deep covering layers.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering and engineering geology, and in particular relates to a method for grading geotechnical quality of deep overburden rock and soil. Background technique [0002] In the engineering geological survey of the dam base area of ​​hydropower projects in my country, it is inevitable to encounter overburden, and the use of overburden to build dams has always been a key technical problem to be solved in the water conservancy and hydropower industry. Especially in high canyon valleys where hydropower resources are abundant, most of the river beds will encounter the problem of deep overburden, which is called a special engineering geological problem, and it is a kind of foundation with poor geological conditions and complex structure. Loose, discontinuous distribution, complex genetic types, large inhomogeneity in physical and mechanical properties, etc., which directly determine the key point...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, provide a kind of engineering geological classification method of rock and soil quality of deep overburden, overcome 1 in the prior art: there is no complete or standardized rock and soil quality classification for deep and thick overburden Classification basis; 2: It is impossible to grasp the quality of the rock and soil in the deep overburden layer; 3: It is impossible to judge whether the overburden layer can be constructed, etc.