An engineering geological classification method for rock and soil quality in deep overburden layers

A technology of deep overburden and grading method, which is applied in the field of engineering geological classification of rock and soil quality in deep overburden, can solve the problems of being unable to grasp the quality of rock and soil in deep overburden and judging whether the overburden can be constructed, and achieves a scientific grading method Reasonable, traditional and universal effect

Active Publication Date: 2021-09-17
POWERCHINA XIBEI ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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specific Embodiment approach

[0034] It should be noted that the structures, proportions, sizes, etc. shown in this specification are only used to cooperate with the contents disclosed in the specification, so as to be understood and read by those who are familiar with this technology, and are not used to limit the conditions that the present invention can be implemented. , any modification of the structure, the change of the proportional relationship or the adjustment of the size, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the scope that the technical content disclosed in the present invention can cover .

[0035] At the same time, the terms such as "up", "down", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and clarity, and are not used to limit this specification. The implementable scope of the invention, and the change or adjustment of the relative relat...

Embodiment 1

[0074] The invention discloses a method for engineering geological classification of deep overburden rock and soil quality, which is characterized by comprising the following steps:

[0075] Step 1) Analyze the grain composition, accumulation age, particle size, genetic type and engineering geological characteristics of rock and soil respectively;

[0076] Step 2) According to step 1), determine that the geotechnical soil is the first-grade geotechnical or the second-grade geotechnical:

[0077] The grain group of the first-grade rock and soil is: one or several of boulder grains, pebble grains, coarse gravel, medium gravel and fine gravel,

[0078] The accumulation age of the first-level rock and soil is: one or several of the Middle Pleistocene, Upper Pleistocene or Holo Pleistocene,

[0079] The mass of particles with a particle size of ≥ 2 mm in the first-grade rock and soil exceeds 50% of the total mass,

[0080] The genetic types of the first-level rock and soil are: m...

Embodiment 2

[0089] The invention discloses a method for engineering geological classification of deep overburden rock and soil quality, which is characterized by comprising the following steps:

[0090] Step 1) Analyze the grain composition, accumulation age, particle size, genetic type and engineering geological characteristics of rock and soil respectively;

[0091] Step 2) According to step 1), determine that the geotechnical soil is the first-grade geotechnical or the second-grade geotechnical:

[0092] The grain group of the first-grade rock and soil is: one or several of boulder grains, pebble grains, coarse gravel, medium gravel and fine gravel,

[0093] The accumulation age of the first-level rock and soil is: one or several of the Middle Pleistocene, Upper Pleistocene or Holo Pleistocene,

[0094] The mass of particles with a particle size of ≥ 2 mm in the first-grade rock and soil exceeds 50% of the total mass,

[0095] The genetic types of the first-level rock and soil are: m...

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Abstract

The invention discloses a method for engineering geological classification of rock and soil quality in deep overburden layers. Step 1) Determine whether the rock and soil is Class I or Class II rock and soil; Step 3) Judge whether the bearing capacity of the rock and soil meets the construction requirements according to the classification results of Step 2), and the bearing capacity of the Class I rock and soil meets the construction requirements; The bearing capacity of grade rock and soil does not meet the construction requirements; the present invention can better grasp the quality of rock and soil in deep overburden layers. Overburden layers should be reasonably evaluated for their stability services. The material composition and structural characteristics of deep overburden layers in different regions and watersheds are closely related to their engineering properties, which is the basis for engineering geological classification of deep overburden 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 engineering geological classification of deep overburden geotechnical quality. Background technique [0002] In the engineering geological survey of the dam base area of ​​hydropower projects in my country, it is inevitable to encounter the overburden, and the use of the overburden to build a dam has always been a key technical problem to be solved in the water conservancy and hydropower industry. Especially in the high canyon valleys with abundant hydropower resources, most of the riverbeds will encounter the problem of deep overburden, which is called a special engineering geological problem. Looseness, discontinuous distribution, complex genetic types, and large inhomogeneity of physical and mechanical properties directly determine the key to dam construction, engineering difficulty and risk, and engineering inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24
Inventor 赵志祥王有林吕宝雄陈楠
Owner POWERCHINA XIBEI ENG
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