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Method for researching gradual degradation rule of strength of saturated water weak structural plane under blasting vibration

A technology of weak structural surface and blasting vibration, applied in the direction of strength characteristics, using stable shear force to test material strength, using sound wave/ultrasonic wave/infrasonic wave to analyze solids, etc., can solve the problem of less weak structural surface and lack of weak structure in slopes The gradual deterioration mechanism of the surface, the deformation and failure of the weak structural surface, etc., achieve the effect of repeated loading, the test process is simple and feasible, and the disturbance is avoided

Active Publication Date: 2019-01-04
内蒙古生力中伟爆破有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many studies on the impact of blasting vibration on the structural surface, but the impact on the weak structural surface of the slope is relatively less, and most of them focus on the deformation and damage of the weak structural surface under the blast load in the vicinity; Research on the Asymptotic Deterioration Mechanism of Weak Structural Surfaces Under Repeated Blasting Vibration in Explosion Far Area

Method used

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  • Method for researching gradual degradation rule of strength of saturated water weak structural plane under blasting vibration
  • Method for researching gradual degradation rule of strength of saturated water weak structural plane under blasting vibration
  • Method for researching gradual degradation rule of strength of saturated water weak structural plane under blasting vibration

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Embodiment 1

[0053] The embodiment of the present invention provides a method for studying the law of gradual change and deterioration of the strength of a water-saturated weak structural surface under blasting vibration.

[0054] The systems in the test process include model making system, model loading system and model testing system:

[0055] a. The model making system is used to make test test blocks, including collection tools, processing tools, acoustic wave testers, saturated water treatment systems and test frames; the collection tools are used to obtain test test blocks that meet the test conditions, that is, using Diamond rock cutting machine or pneumatic pick strips the structural surface rock, uses the rock cutter to cut the structural surface and its upper and lower layers of rock, and marks the rock position, and binds the rock sample containing the structural surface with iron wire before and after the rock sample is separated from the parent rock; The processing tool is use...

Embodiment 2

[0078] The model making system is used to make the test block, including collection tools, processing tools, acoustic wave tester, saturated water treatment system and test frame; the three-dimensional structure of the test block is as follows: image 3 As shown, the size of the rock mass 92 on the upper wall of the test piece 9 is 15cm*15cm*6cm, the size of the rock mass 93 on the footwall is 15cm*15cm*6cm, and the size of the structural surface 91 is 15cm*15cm*3cm; the acquisition tool is used for Obtain a test block that meets the test conditions, that is, use a diamond rock cutter or a pneumatic pick to peel off the structural surface rock, use a rock cutter to cut out the structural surface and its upper and lower rocks, and mark the rock position. Before and after the rock sample is separated from the parent rock, Bind the rock samples containing structural surfaces with iron wires; the processing tools are used to process the samples that are about to be collected into s...

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Abstract

The invention discloses a method for researching the gradual degradation rule of the strength of a saturated water weak structural plane under blasting vibration. The method includes the steps that atest block is manufactured, the initial stress state of the test block is calculated, and loading is carried out on the test block under the condition of the static force boundary of the test block; loading is carried out under different blasting vibration simulation load conditions of the test block; the structural plane is subjected to sound wave testing, and the loss degree of the blasting vibration to the structural plane is analyzed; blasting vibration wave penetrating conditions of the structural plane are monitored, and the influence of blasting vibration on the structure plane blastingvibration speed propagation law is obtained; shear strength parameters of the structural plane are measured, and the influence of the blasting vibration on the change rule of the shear strength of the structural plane is obtained; finally, the gradual degradation rule of the strength of the saturated water weak structural plane under the action of blasting vibration action is obtained. Accordingto the method, the influence of different characteristic blasting vibration loads on the gradual degradation rule of the strength of the saturated water weak structural plane can be reflected truly and directly.

Description

technical field [0001] The invention relates to the field of rock and soil mechanics, in particular to a method for studying the law of gradual change and deterioration of the strength of a water-saturated weak structural surface under blasting vibration. Background technique [0002] As a necessary means of rock mass excavation, ore mining and other production and engineering construction, blasting brings huge benefits while the dynamic disturbance effect of blasting vibration is often an important factor affecting the occurrence of rock mass instability disasters induced by blasting. The weak structural plane is an important factor controlling the stability of slope rock mass. The weak structural plane in the saturated state of the slope during the rainy season and spring snowmelt is very prone to slipping and instability under the disturbance of blasting vibration. [0003] At present, there are many studies on the impact of blasting vibration on the structural surface, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G01N3/24G01N3/313G01N29/04
CPCG01N3/24G01N3/313G01N29/04G01N33/24
Inventor 蒋楠吴廷尧罗学东周传波夏宇磬张玉琦朱斌
Owner 内蒙古生力中伟爆破有限责任公司
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