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Early warning method for rock landslide with joint plane sliding surface, and application thereof.

A sliding surface and joint surface technology, applied in the field of rock landslide prevention, can solve problems such as landslides that cannot be warned of other sliding surfaces, and achieve the effect of ensuring early warning and strong applicability

Active Publication Date: 2019-08-30
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The early warning method for rock landslides in red bed areas disclosed in this patent document describes the early warning model and critical value for rock landslides in red bed areas, but this model can only be used for weak interlayer sliding surfaces in red bed areas, other It is not applicable in the region, and it is not possible to warn of landslides on other sliding surfaces

Method used

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  • Early warning method for rock landslide with joint plane sliding surface, and application thereof.
  • Early warning method for rock landslide with joint plane sliding surface, and application thereof.
  • Early warning method for rock landslide with joint plane sliding surface, and application thereof.

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Effect test

Embodiment 1

[0055] A method for early warning of rock landslides on a joint surface sliding surface, comprising the following steps:

[0056] a. Through on-site investigation, find the position of the sliding surface of the landslide, determine the sliding surface of the joint surface, and determine the friction angle of the sliding surface

[0057] b. Determine the landslide slope α, landslide area A, and landslide upper side area A through on-site investigation and mapping u , the side slope β on the landslide body; monitor the rainfall to obtain the duration of rainfall D and the average intensity I of rainfall;

[0058] c. Calculating the comprehensive discriminant factor P for early warning of landslides, from the sliding surface friction angle Terrain factor T and rainfall factor R are calculated and determined according to formula 1;

[0059] P=TR / G 0.5 Formula 1

[0060] In the formula:

[0061] P——comprehensive discriminant factor for early warning;

[0062] T - terrain...

Embodiment 2

[0086] A method for early warning of rock landslides on a joint surface sliding surface, comprising the following steps:

[0087] a. Through on-site investigation, find the position of the sliding surface of the landslide, determine the sliding surface of the joint surface, and determine the friction angle of the sliding surface

[0088] b. Determine the landslide slope α, landslide area A, and landslide upper side area A through on-site surveying and mapping u , the side slope β on the landslide mass; monitor the rainfall to obtain the duration of rainfall D and the average intensity I of rainfall;

[0089] c. Calculate the early warning comprehensive discriminant factor P of the landslide, from the friction angle of the sliding surface Terrain factor T and rainfall factor R are calculated and determined according to formula 1;

[0090] P=TR / G 0.5 Formula 1

[0091] In the formula:

[0092] P——comprehensive discriminant factor of early warning;

[0093] T - terrain ...

Embodiment 3

[0118] A method for early warning of rock landslides on a joint surface sliding surface, comprising the following steps:

[0119] a. Through on-site investigation, find the position of the sliding surface of the landslide, determine the sliding surface of the joint surface, and determine the friction angle of the sliding surface

[0120] b. Determine the landslide slope α, landslide area A, and landslide upper side area A through on-site investigation and mapping u , the side slope β on the landslide body; monitor the rainfall to obtain the duration of rainfall D and the average intensity I of rainfall;

[0121] c. Calculating the comprehensive discriminant factor P for early warning of landslides, from the sliding surface friction angle Terrain factor T and rainfall factor R are calculated and determined according to formula 1;

[0122] P=TR / G 0.5 Formula 1

[0123] In the formula:

[0124] P——comprehensive discriminant factor for early warning;

[0125] T - terrain...

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Abstract

The present invention discloses an early warning method for the rock landslide with a joint plane sliding surface, and belongs to the field of rock landslide prevention. The method comprises the following steps: a, determining a friction angle of the sliding surface; b, through on-site survey and mapping, determining the landslide body slope degree alpha, the landslide body area A, the landslide body upper side area Au and the landslide body upper side slope degree beta, and monitoring the rainfall to obtain the rainfall duration D and the average rainfall intensity I; c, calculating an earlywarning comprehensive discriminating factor P of the landslide; and d, dividing warning levels for the rock landslide with the joint plane sliding surface. According to the technical scheme of the present invention, the sliding surface characteristics, terrain conditions and rainfall conditions of the rock landslide with the joint plane sliding surface are studied, comprehensive determination is performed on the occurrence of the landslide, a precise early warning calculation model is established for the rock landslide with the joint plane sliding surface, the possibilities of occurrence of the landslide are accurately divided in a quantitative way, and a good early warning effect is exerted on the rock landslide with the joint plane sliding surface.

Description

technical field [0001] The invention relates to the technical field of prevention and control of rock landslides, in particular to an early warning method and application of rock landslides on joint surface sliding surfaces. Background technique [0002] According to the material composition, origin, nature and failure mode of the sliding surface of rock landslide, the sliding surface of rock landslide can be divided into weak interlayer sliding surface, rock layer sliding surface and joint surface sliding surface. The sliding surface of the joint surface has a good opening degree, and the surface is generally rough, which may be filled by various muddy and calcareous cements. The reason for the formation of the sliding surface is analyzed, and the sliding surface of the joint surface is formed under the action of structure and supergeneity. [0003] Rock landslides on sliding surfaces of joint surfaces are generally not easy to occur, but once they occur, they often cause ...

Claims

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Application Information

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IPC IPC(8): G08B21/10G08B31/00
CPCG08B21/10G08B31/00
Inventor 余斌马二龙杨凌崴
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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