Bidirectional penetration model testing device suitable for soil-rock slopes

A model test device and technology of penetration force, applied in soil material testing, material inspection products, etc., can solve the problem that the experimental model of soil and rock slope cannot realistically simulate the prototype.

Inactive Publication Date: 2014-04-30
SICHUAN UNIV +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention aims at providing a kind of two-way penetration model test device suitable for earth-rock slopes to solve the problems of the earth-rock slope experimental models in the prior art. The problem of not being able to realistically simulate the prototype

Method used

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  • Bidirectional penetration model testing device suitable for soil-rock slopes
  • Bidirectional penetration model testing device suitable for soil-rock slopes
  • Bidirectional penetration model testing device suitable for soil-rock slopes

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The two-way permeability model test device suitable for earth-rock slopes in this embodiment has a structure as attached figure 1 , 2 As shown in and 3, it consists of a chamber and an experimental device main body located in the chamber. The experimental device main body includes slope accumulation bodies 8 with two oblique sides above which are inclined as water seepage surfaces, and a slope accumulation body 8 located above the slope accumulation body water seepage surfaces. A number of seepage pipes 11, a cover plate 10 made of plexiglass plate for sealing the seepage water above the seepage pipe, a water source 13 connected to the seepage pipe, and a compression-controlled water tank located below the slope accumulation body opposite to the seepage surface of the slope accumulation body. Deformable permeable cushion body made of deformable material 6, water permeable support body composed of blocks and sand pebbles located under the deformable water permeable layer...

Embodiment 2

[0030]The two-way permeability model test device applicable to earth-rock slopes of this embodiment is basically the same as the structure of the test device described in Example 1 on the whole, the difference is that the test device is an open structure, and the slope accumulation body 8 The long slope surface and the ground form a slope angle of 45°. The support body is made of sand and pebbles. It is located on the support of the seepage pipe above the two seepage surfaces of the slope accumulation body, and is supplied with water by two water pumps with adjustable pressure.

Embodiment 3

[0032] The two-way permeability model test device applicable to earth-rock slopes of this embodiment is basically the same as the structure of the test device described in Embodiment 1 on the whole, the difference is that the long slope surface of the slope accumulation body 8 is 30° away from the ground. ° slope angle, the support body is built by blocks, and the seepage pipes on the two seepage surfaces of the slope body are respectively supplied with water by two water tanks with adjustable water heads.

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Abstract

The invention discloses a bidirectional penetration model testing device suitable for soil-rock slopes. The bidirectional penetration model testing device comprises a slope deposit, water penetration pipes, cover plates, a water source, a deformable water permeable bearing pad body, a water permeable support body, pore pressure gauges and inclinometer tubes, wherein the slope deposit is obliquely arranged and has two upper oblique side surfaces of water penetration surfaces; the water penetration pipes are positioned above the water penetration surfaces of the slope deposit; the cover plates are positioned above the water penetration pipes, made of transparent materials and used for sealing penetration water; the water source is connected with the water penetration pipes the deformable water permeable bearing pad body is opposite to the water penetration surfaces of the slope deposit and positioned below the slope deposit; the water permeable support body is positioned below a deformable water permeable layer and used for supporting the slope deposit; the pore pressure gauges are buried in the slope deposit; the inclinometer tubes are used for enabling a probe of an inclinometer to get in and out. The long slope surface in the slope deposit forms an angle of 20-45 degrees with the ground, and the water penetration pipes which are horizontally arranged are respectively designed with a plurality of water penetration holes. The bidirectional penetration model testing device can truly simulate the effective stress and the water pressure in a slope body of a soil-rock slope under the synergy of penetration along the slope direction and the penetration which is vertical to the slope surface according to an amplification ratio, and solve the difficult that a general geotechnical model is difficult to simultaneously meet geometric similarity and physical similarity.

Description

technical field [0001] The invention relates to the technical field of earth-rock slope ecological protection, in particular to a model test device suitable for earth-rock slope ecological protection. Background technique [0002] In terms of geotechnical model tests, the current popular tests mainly include conventional model, magnetic geological model and centrifugal model test. Unlike rock and concrete, for soil, the key to the success of geotechnical model tests is to correctly simulate the effective self-weight stress and water pressure of the small-scale model. The results of a large number of indoor tests on soil and rock materials show that the soil and rock materials have the following characteristics: [0003] ① The stress-strain relationship is elastic-plastic and nonlinear; [0004] ②The stress-strain relationship behaves differently under different stress levels. The deformation modulus and strength of the soil are closely related to the stress level, and this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
Inventor 周成陈生水何宁陈群张桂荣何建村吴艳王琛刘恩龙周富强周彦章戴灿伟曾子刘俊石北啸
Owner SICHUAN UNIV
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