Rock high slope stability analysis three-dimensional geomechanical model test method and application thereof

A three-dimensional geological and mechanical model technology, applied in special data processing applications, instruments, calculations, etc., can solve problems such as only considering the influence of a single factor

CN110362955APending Publication Date: 2019-10-22SICHUAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-10-22

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Abstract

The invention belongs to the technical field of slope stability measurement and discloses a rock high slope stability analysis three-dimensional geomechanical model test method and the application thereof. The stability of the rock high slope is evaluated through a geomechanical model test method based on temperature rise, intensity reduction and lifting overload. The disclosed method comprises the whole test process, namely, the process of model design, model material test, model manufacturing, measurement system installation and model test. According to the method, the slope deformation distribution characteristics, the damage process and the damage mechanism can be obtained, the overall stability safety coefficient of the slope is obtained. Therefore, the overall stability of the high slope is evaluated. Finally, the method is applied to stability research of the high slope of the left bank dam abutment of the crane beach hydropower station. The initial cracking safety coefficient Kof the high slope is obtained. The initial cracking safety coefficient K ranges from 1.030 to 1.058. The limit safety factor k limit is equal to 1.417-1.579, and the overall stability of the slope isevaluated.
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Description

technical field

[0001] The invention belongs to the technical field of slope stability measurement, and in particular relates to a three-dimensional geomechanical model test method for stability analysis of high rock slopes and its application. Background technique

[0002] At present, the closest existing technology: However, due to the special geographical environment in the western region, it is often necessary to excavate a large amount of rock and soil in construction activities such as hydropower projects, highway projects, railway projects, and mining projects in this region. A high and steep artificial slope is formed. Taking hydropower projects as an example, according to incomplete statistics, there are currently more than 30 dams with a height of more than 150m that have been built, are under construction, or are to be built in my country. Many project slopes are as high as more than 200m, and most of them are rocky slopes. For example, the slope of the flood dis...

Examples

Embodiment Construction

[0100] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0101] Aiming at the problems existing in the prior art, the present invention provides a method for measuring the stability of a high slope of a hydropower station using a three-dimensional geomechanical model. The present invention will be described in detail below in conjunction with the accompanying drawings.

[0102] The three-dimensional geomechanical model test method for stability analysis of high rocky slopes provided by the embodiments of the present invention evaluates the stability of high rocky slopes by means of a geomechanical model test method based on temperature rise, strength drop, and uplift overload. The...