Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Frozen soil blasting model test system and test method thereof

A technology of model test and test method, applied in the direction of soil material test, material inspection product, test sample preparation, etc., can solve the problems of less engineering experience, determination of blasting parameters and lack of research on vibration damage effect analysis, etc. Strong repeatability, accurate and fast measurement, easy to achieve effect

Active Publication Date: 2019-01-25
CHONGQING JIAOTONG UNIVERSITY
View PDF9 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Frozen soil blasting, as a special blasting technology, has little engineering experience, lack of research on the determination of blasting parameters and the analysis of vibration damage effects.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Frozen soil blasting model test system and test method thereof
  • Frozen soil blasting model test system and test method thereof
  • Frozen soil blasting model test system and test method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment discloses a frozen soil blasting model test system, which includes an explosion-proof box 1 , a frozen soil mold, a computer 12 and a data acquisition processor 13 .

[0041] see figure 1 , the explosion-proof box 1 as a whole is a rectangular box with a top cover. The explosion-proof box 1 is a hollow cuboid as a whole. The explosion-proof box 1 includes a top cover, a bottom cover and four side walls. The four side walls enclose a rectangular frame with open upper and lower ends. The upper opening of the rectangular frame is blocked by the top cover, and the lower opening is blocked by the bottom cover. The top cover, the bottom cover and the four side walls are integrated. The top cover of the explosion-proof box 1 is provided with a vent hole 101 . The side wall of the explosion-proof box 1 is provided with a vent 102 and an explosion-proof box door 103 . The vent holes 101 discharge the airflow generated by blasting, and the holes are provided...

Embodiment 2

[0046] This embodiment discloses a kind of test method about the frozen soil blasting model test system described in embodiment 1, comprising the following steps:

[0047] 1) This embodiment simulates frozen soil with a small water content. Prepare the melted soil sample according to a certain water content, stir evenly, add it into the inner cavity S in 4 to 5 times, and compact it in layers. The stratified refrigerator 11 is turned on, and the frozen soil sample 9 is stratified frozen for 48 hours, thereby realizing the phenomenon of simulating the temperature change from shallow to deep frozen soil. Wherein, the upper and lower layers of the layered refrigerator 11 are both provided with temperature sensors. The temperature sensor is connected with the data acquisition processor 13 .

[0048] 2) Determine the blasting parameters, and select the layout of blast holes according to the test requirements. A blast hole 901 is drilled on the upper surface of the frozen soil sa...

Embodiment 3

[0054] This embodiment discloses a kind of test method about the frozen soil blasting model test system described in embodiment 1, comprising the following steps:

[0055] 1) Select the stepped mold 8 according to the test requirements. see Figure 4 , choosing different geometric parameters step-shaped mold 8 can simulate different free surfaces.

[0056] 2) This embodiment simulates frozen soil with a relatively high water content. First, freeze the water to form ice cubes, then use a machine to break them into ice chips, mix the soil and ice chips evenly, add them into the inner cavity S in 4 to 5 times, and compact them in layers. The stratified refrigerator 11 was turned on, and the frozen soil sample 9 was stratified frozen for 48 hours. Wherein, the upper and lower layers of the layered refrigerator 11 are both provided with temperature sensors. The temperature sensor is connected with the data acquisition processor 13 .

[0057] 3) Determine the blasting parameter...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a frozen soil blasting model test system and a test method thereof. The test system comprises an explosion-proof box, a frozen soil mold, a computer and a data acquisition processor. High-speed cameras are arranged at four corners of the top of an inner cavity of the anti-explosion box. A top cover is provided with a three-dimensional laser scanner. The frozen soil mold is arranged in the explosion-proof box. A frozen soil sample is arranged in the frozen soil mold. Blast holes are formed in the upper surface of the frozen soil sample according to the design. Similar explosives are arranged in the blast holes. During a test, the explosives are detonated, and the high-speed cameras are used for observing and recording a blasting process. The data acquisition processoris used for collecting and recording blasting vibration data. The test method of the test system comprises the steps of preparing the frozen soil sample; arranging the blast holes; simulating blasting; performing data acquisition; and the like. The test system is simple and convenient to operate, easy to implement and high in repeatability. The test system and method can be safely and effectivelyused for indoor frozen soil blasting model tests.

Description

technical field [0001] The invention relates to the technical field of frozen soil mechanics, in particular to a frozen soil blasting model test system. Background technique [0002] Permafrost refers to various rocks and soils below zero degrees Celsius and containing ice. Frozen soil mechanics belongs to the category of rock and soil mechanics, but due to the existence of ice in frozen soil, its mechanical properties are very different from those of ordinary rock and soil materials. The areas of permafrost and seasonal permafrost in China account for 21.5% and 53.5% of the country's land area respectively. In the construction of water conservancy projects, industrial and civil buildings, and transportation projects in permafrost areas, it is necessary to answer a series of engineering permafrost theoretical and practical issues related to the permafrost and its interaction with engineering buildings, so as to ensure The stability, durability and economic rationality of e...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G01N1/28
CPCG01N1/28G01N33/24
Inventor 邱珍锋武立清黄诗渊王俊杰
Owner CHONGQING JIAOTONG UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com