Method for calculating rock failure probability in rock slope

A rock slope, failure probability technology, applied in the direction of calculation, design optimization/simulation, special data processing application, etc., can solve the problems affecting the accuracy and insufficiency of rock slope reliability analysis

Active Publication Date: 2018-11-06
KUNMING UNIV OF SCI & TECH
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Problems solved by technology

[0002] The reliability analysis of rock slopes has been very popular in the field of geotechnical engineering, but there are still some deficiencies in this field, such as: (1) The slope stability calculation method used in the current reliability analysis of rock slopes Rigid body limit equilibrium method and finite element method are mainly used. However, rigid body limit equilibrium method needs to assume the sliding surface of rock slope failure in advance, and finite element

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  • Method for calculating rock failure probability in rock slope
  • Method for calculating rock failure probability in rock slope
  • Method for calculating rock failure probability in rock slope

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Embodiment 1

[0055] Embodiment 1: as Figure 1-7 As shown, a method for calculating the failure probability of rock blocks in a rocky slope, the specific steps of the method are as follows:

[0056] Step 1, formulate calculation parameters of rock slope;

[0057] Step 2, establishing the limit state function of the rock slope;

[0058] Step 3. Discretize rock slopes using rigid block elements;

[0059] Step 4, set up the linear programming model of the upper limit method for solving the rock block failure probability;

[0060] Step 5, using the Monte Carlo method to solve the linear programming model of the upper limit method, and calculate the failure probability of the rock block.

[0061] Flowchart such as figure 1 shown.

[0062] Further, the method steps can be set as follows:

[0063] Step 1. Draw up the basic information of the rock slope: according to the engineering data of the two-dimensional rock slope, draw up the main calculation parameters for calculation and analysis, ...

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Abstract

The present invention discloses a method for calculating the rock failure probability in a rock slope. The method comprises: step 1, formulating a calculation parameter of a rock slope; step 2, establishing a limit state function of the rock slope; step 3, discretizing the rock slope by using rigid block elements; step 4, establishing an upper bound linear programming model for solving the rock failure probability; and step 5, solving the upper bound linear programming model by using a Monte Carlo method, and calculating the rock failure probability. According to the method disclosed by the present invention, a two-dimensional rock slope is taken as a research object, the upper bound theorem of plastic limit analysis, and the rigid block element discrete technology, the linear programmingmethod and the Monte Carlo method are combined to establish a mathematical programming model of the upper bound method for calculating the rock failure probability; and the model can be effectively used to calculate the rock failure probability and obtain the failure probability and the corresponding failure mode of all rock blocks in the rock slope.

Description

technical field [0001] The invention relates to a method for calculating failure probability of rock blocks in rock slopes, and belongs to the technical field of rock slope engineering reliability analysis. Background technique [0002] The reliability analysis of rock slopes has been very popular in the field of geotechnical engineering, but there are still some deficiencies in this field, such as: (1) The slope stability calculation method used in the current reliability analysis of rock slopes Rigid body limit equilibrium method and finite element method are mainly used. However, rigid body limit equilibrium method needs to assume the sliding surface of rock slope failure in advance, and finite element method needs to simulate complex joint network and constitutive relationship. (2) In terms of the failure probability of rock slopes, it is mainly based on the safety factor of the overall stability of rock slopes to calculate the failure probability of the entire slope; (3...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20Y02A10/23
Inventor 李泽彭普张小艳
Owner KUNMING UNIV OF SCI & TECH
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