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A test system and test method for dynamic damage performance of water-containing fractures

A test system, crack technology, applied in the direction of testing material strength by using one impact force, testing material strength by applying stable tension/compression, measuring devices, etc.

Active Publication Date: 2021-10-29
SHANDONG UNIV +1
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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 provide a water-containing crack dynamic damage performance testing system and testing method that can accurately simulate rock mass blasting dynamics and perform quantitative characterization of water-containing crack dynamic damage tests, so as to solve at least one technical problem in the above-mentioned background technology

Method used

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  • A test system and test method for dynamic damage performance of water-containing fractures
  • A test system and test method for dynamic damage performance of water-containing fractures
  • A test system and test method for dynamic damage performance of water-containing fractures

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Embodiment 1

[0050] In view of the shortcomings of the blasting simulation test method that blasting is difficult to quantify and carry out testing of water-containing fractured rock mass, the embodiment of the present invention provides a water-containing fracture dynamic damage performance test system and test method to study the dynamic damage of fractured rock mass and water in cracks during the blasting process. Pressure response and dynamic deformation, using non-explosive blasting method, using high-voltage pulse fracturing to quantitatively simulate blasting dynamics, realizing accurate simulation of blasting dynamics and quantitative characterization of water-containing fracture dynamic damage tests.

[0051] Such as figure 1 As shown, the water-containing fracture dynamic damage performance test system provided by Embodiment 1 of the present invention includes: a blasting dynamic simulation device 13, which is used to excite the rock specimen 1 by blasting to simulate the blasting...

Embodiment 2

[0070] In embodiment 2 of the present invention, a kind of water-containing crack dynamic damage performance test system is provided, such as figure 2 As shown, the water-containing fracture dynamic damage performance test system includes: integrated pouring and protection device (namely protection device 2), blasting dynamic simulation and test device, water pressure loading and micro-change monitoring device in the crack, acoustic emission monitoring and high-speed camera device , the integrated pouring and protection device is respectively connected with the blasting dynamic simulation and testing device, the water pressure loading and micro-change monitoring device in the crack, and the acoustic emission monitoring and high-speed camera device.

[0071] Such as Figure 3 to Figure 5 As shown, in this embodiment 2, the integrated pouring and protective device is high-strength explosion-proof tempered glass, integrated box structure, the test specimen is placed in the prote...

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Abstract

The invention provides a test system and test method for dynamic damage performance of water-containing fissures, belonging to the technical field of blasting simulation tests in geotechnical engineering, including: a blasting dynamic simulation device performs blasting excitation on rock test pieces; The prefabricated cracks are loaded with water pressure; the blasting vibration monitoring device monitors the blasting vibration velocity during the blasting process of rock specimens; the acoustic emission monitoring device monitors the characteristics of acoustic emission signals during the blasting process of rock specimens; deformation and hydraulic pressure. In the present invention, through processes such as preloading water pressure inside the crack and blasting excitation at the center of the test piece, it adopts means such as blasting vibration monitoring, water pressure and strain monitoring, inner crack initiation positioning and outer crack expansion monitoring, and adopts non-explosive blasting method, using high-voltage pulse The method of quantitatively simulating blasting dynamics by fracturing realizes accurate simulation of blasting dynamics and quantitative characterization of dynamic damage test of water-containing fractures.

Description

technical field [0001] The invention relates to the technical field of blasting simulation tests in geotechnical engineering, in particular to a test system and a test method for dynamic damage performance of water-containing cracks. Background technique [0002] At present, during the construction of many tunnels and underground projects, the drilling and blasting method is more flexible, and relatively simple and cheap construction equipment can be used. It is suitable for excavating underground caverns of various shapes, sizes, and sizes, so it has become a rock mass excavation method. One of the means. However, during the construction process, the explosion stress wave propagating in the fractured rock mass will cause the cracks in the rock mass to expand and penetrate, and may cause surrounding rock damage or even landslides. Therefore, it is of great significance for the safe construction of drilling and blasting method and the quality of tunnel excavation to study th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/12G01N3/30
CPCG01N3/12G01N3/30G01N2203/0019G01N2203/0048
Inventor 周宗青屠文锋焦玉勇李利平李术才谭飞商成顺张道生白松松王超
Owner SHANDONG UNIV
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