Frozen soil slope model making and frozen soil slope model directional blasting test device and test method

A technology of directional blasting and manufacturing method is applied in the field of frozen soil slope model making and frozen soil slope model directional blasting test device, visualization of frozen soil slope model making and frozen soil slope model directional blasting test device, which can solve the problem. Unable to prepare saturated transparent frozen soil samples, etc.

Inactive Publication Date: 2016-04-27
HUNAN CITY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the saturated transparent frozen soil sample cannot be prepared by using the existing solid particles for preparing transparent soil.

Method used

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  • Frozen soil slope model making and frozen soil slope model directional blasting test device and test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A kind of permafrost slope model making method, it comprises the following steps:

[0047] ⑴Material preparation: First, make a mold for simulating a natural slope model according to the test requirements, and then calculate and determine the dosage of fluoropolymer, granular ice and colorless pore liquid according to the test conditions and the size of the mold; the fluoropolymer is the particle size 0.25㎜~2.0㎜ particles, cleaning impurities and drying, the particles are irregular shape, TeflonAF1600 produced by DuPont, USA, with a refractive index of 1.31 and a density of 2.1g / ㎝ 3 ~2.3g / ㎝ 3 ; The granular ice is crushed from a frozen whole piece of ice, and its particle size is 0.1 mm to 0.5 mm; the colorless pore liquid is water;

[0048] In step (1) of the present invention, the fluorine-containing polymer particles of 0.25㎜≤particle diameter<0.5㎜ are 10%~50%; those of 0.5㎜≤particle diameter<1.0㎜ are 10%~50%, and 1.0㎜≤ 10% to 50% for particle size <1.5㎜, 10% to 50...

Embodiment 2

[0091] In the preparation of permafrost slope model 2, the density is 2.1g / ㎝ 3 fluorine-containing polymer particles, 20% for fluorine-containing polymer particles 0.25㎜≤particle size3 , severe 18kN / m 3 , compactness 30%; mechanical properties: internal friction angle 30°, elastic modulus 10MPa, Poisson's ratio 0.35.

[0092] The rest are the same as embodiment 1.

Embodiment 3

[0094] A kind of permafrost slope model making method, it comprises the following steps:

[0095] ⑴Material preparation: First, make a mold for simulating a natural slope model according to the test requirements, and then calculate and determine the dosage of fluoropolymer, granular ice and colorless pore liquid according to the test conditions and the size of the mold; the fluoropolymer is the particle size Particles ≤0.074㎜, cleaned of impurities and dried, the particles are irregular in shape, TeflonAF1600 produced by DuPont, USA, with a refractive index of 1.31 and a density of 2.1g / ㎝ 3 ~2.3g / ㎝ 3 ; The granular ice is crushed from frozen whole ice, and its particle size is ≤0.074㎜; the colorless pore liquid is water;

[0096] In order not to affect the refractive index, the water described in the present invention is pure water.

[0097] The test conditions of this embodiment are the same as in Example 1 with the sample size and calculation method in the mold.

[0098] ...

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Abstract

The invention discloses a device and a method for manufacturing a frozen soil slope model as well as a device and a method for testing directional blasting of the frozen soil slope model. A fluorine-containing polymer is taken as a transparent solid material in preparation of transparent frozen soil for making a transparent frozen soil slope model, wherein the fluorine-containing polymer is composed of particles with particle diameter being 0.25mm-2.0mm; the fluorine-containing polymer is TeflonAF1600 produced by DuPont Company of America; the refractive index of the fluorine-containing polymer is 1.31; the density is 2.1g / cm<3>-2.3g / cm<3>; the testing device comprises a transparent model tank, a simulation device for simulating natural slope such as a transparent frozen soil slope model, a recording and observing device and a processing device of a digital camera. The testing method is feasible; the prepared transparent soil is high in transparency, low in cost, innocuous and non-toxic, good in similarity with soil properties of natural frozen soil and capable of widely replacing the natural frozen soil; the testing device is easy and simple to operate, easy to implement and strong in repeatability; the testing device can be used for simulating complex geological conditions and also can be effectively used for testing models in geotechnical engineering.

Description

technical field [0001] The present invention relates to a kind of directional blasting test device and test method of soil, specifically a kind of permafrost slope model making and permafrost slope model directional blasting test device and test method, especially relates to a kind of visual permafrost Slope model making and permafrost slope model directional blasting test device and test method. Background technique [0002] In the model test of geotechnical engineering, it is of great significance to explore the nature of geotechnical engineering problems by studying the law and mechanism of soil internal deformation, such as controlled blasting, pile sinking construction process, foundation pit excavation process, etc. In particular, the area of ​​permafrost, seasonally frozen soil and short-term frozen soil areas on the earth accounts for about 50% of the land area, of which the distribution area of ​​permafrost is 35 million ㎞ 2 , accounting for about 25% of the land a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28G01N33/24
Inventor 孔纲强
Owner HUNAN CITY UNIV
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