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Method for evaluating safety reserve of rock-soil slope by using centrifugal model test

A centrifugal model test and safety reserve technology, which is applied in the field of evaluating the safety reserve of rock and soil slopes by centrifugal model test, can solve problems such as actual deviations and landslides, and achieve the effect of effective and reasonable safety reserve.

Active Publication Date: 2018-12-14
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

[0005] The problem with the current slope safety factor calculation is that the calculated results deviate from the actual ones. Some slopes are considered safe and will not be damaged after calculation, but landslides actually occur; the calculation results of some slopes show that landslides will occur , the slope is very stable in reality

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  • Method for evaluating safety reserve of rock-soil slope by using centrifugal model test
  • Method for evaluating safety reserve of rock-soil slope by using centrifugal model test
  • Method for evaluating safety reserve of rock-soil slope by using centrifugal model test

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Embodiment Construction

[0030] The specific embodiments of the present invention are described below to facilitate those skilled in the art to understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Such changes are obvious within the spirit and scope of the present invention as defined and determined by the appended claims, and all inventions and creations utilizing the inventive concept are within the scope of protection.

[0031] refer to figure 1 , figure 1 A flow chart showing a method for evaluating the safety reserve of geotechnical slopes using centrifugal model tests, such as figure 1 As shown, the method 100 includes steps 101 to 107 .

[0032] In step 101, according to the prototype of the studied rock and soil slope, the centrifugal model of the rock and soil slope is made after being reduced according to the set ratio; such as figure ...

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Abstract

The invention discloses a method for evaluating safety reserve of a rock-soil slope by using a centrifugal model test. The method for evaluating the safety reserve of the rock-soil slope by using thecentrifugal model test comprises the steps of scaling down a prototype of the rock-soil slope to be researched to make a rock-soil slope centrifugal model; placing the rock-soil slope centrifugal model in a centrifugal device; carrying out slope failure test on the rock-soil slope centrifugal model according to a set times of accelerated speed; when the failure of the rock-soil slope centrifugal model occurs under an effect of the set times of accelerated speed, lifting the rock-soil slope centrifugal model for an angle, and then continuing to carry out a centrifugal slope failure test; when the failure of the rock-soil slope centrifugal model just occurs, carrying out inverse analysis on cohesion strength of rock-soil slope soil according to a critical condition that the safety coefficient on a failure surface is less than or equal to 1; calculating the safety coefficient of a most dangerous slip surface of the rock-soil slope with the same soil according to the cohesion strength; andobtaining the safety reserve of the rock-soil slope to be researched by comparing the safety coefficient with the safety coefficient of the failure surface when the failure of the rock-soil slope with the same soil just occurs.

Description

technical field [0001] The invention relates to the field of geological disaster research, and relates to a method for evaluating the safety reserve of rock and soil slopes by using a centrifugal model test. Background technique [0002] Landslide is a very important geological disaster. The occurrence of landslide will bring great threat to people's life and property safety and affect the normal life and production order. Facing the threat brought by the slope, correct assessment of the stability of the slope is an important way to ensure the safety of people's lives and reduce the loss of people's property. [0003] At present, the limit equilibrium method is the traditional method of slope stability analysis, and it is also the most important method in slope design and calculation. Generally, the slope safety factor F value is used as an index to characterize the slope stability. The slope slides along a certain slip surface. The safety factor F is defined as: reducing t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/00
CPCG01N3/00
Inventor 侯瑜京贾程宏祁磊基
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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