Quantitative recognition method for potential slip surface of rock slope

A quantitative identification and rock slope technology, applied in excavation, foundation structure test, construction, etc., can solve the problems of large differences in reliability and achieve low cost, high precision, accurate and reliable measurement results

Active Publication Date: 2015-03-11
CHINA UNIV OF MINING & TECH
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  • Abstract
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Problems solved by technology

This method is easily affected by the nature of the slope stratum, terrain fluctuations and human subjective factors, and the reliability of the detection results varies greatly.

Method used

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  • Quantitative recognition method for potential slip surface of rock slope
  • Quantitative recognition method for potential slip surface of rock slope
  • Quantitative recognition method for potential slip surface of rock slope

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with the accompanying drawings.

[0044] A method for quantitatively identifying potential sliding surfaces 6 of rock slopes, including the steps of laying sensors, distributed detection of rock mass deformation, and quantitative identification of potential sliding surfaces, specifically:

[0045] (1) Laying of sensors

[0046] (1.1) If figure 2 An array of monitoring holes 5 is arranged along the inclination and direction of the slope surface; the depth of the monitoring holes 5 is greater than or equal to the vertical height from the ground at the position to the stable bedrock, and the diameter of the monitoring holes 5 is within the range of 75-110mm. Along the inclination and direction of the slope surface, the horizontal distance between adjacent monitoring holes 5 is in the range of 3-10m; the symmetrical laying plane of the strain sensing optical cable in the monitoring hole is consistent with...

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Abstract

The invention discloses a quantitative recognition method for a potential slip surface of a rock slope. The method comprises the steps of performing distributive temperature detection for the rock at the side slope by the BOTDR / BOTDA distributed fiber optic sensing technology to obtain the change on temperature of the rock caused by rain permeated; conducting correlation analysis for change on lithology, opening, underground water level and other parameters and the change on the temperature of rock through each monitoring hole in the side slope to determine the rainwater permeating structural plane of the side slope; comparing and analyzing the slip position of the side slope while detecting the distributed deformation to recognize the potential slip surface of the side slope. The method has the advantages of being simple, convenient to operate, safe and reliable; the method is applicable to the determination of the potential slip surface of the rock slope caused by raining.

Description

technical field [0001] The invention belongs to geological disaster monitoring technology, in particular to a method for quantitatively identifying potential sliding surfaces of rock slopes based on distributed optical fiber sensing technology. Background technique [0002] Under rainfall conditions, rainwater infiltrates downward along the cracks of the rock mass, which will increase the permeability of the rock mass and reduce the shear strength of the structural plane, thus leading to the instability and failure of the slope. Therefore, by grasping the flow of groundwater after rainfall infiltration in the rock mass and accurately determining the potential sliding surface of the slope, it can provide a scientific basis for the design of landslide control schemes. At present, there are mainly engineering survey methods, transient Rayleigh wave survey methods, and geological radar detection methods for the identification of slope sliding surfaces. Among them, the engineeri...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D33/00E02D17/20
Inventor 朴春德施斌魏广庆袁骏
Owner CHINA UNIV OF MINING & TECH
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