Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for simulating strength weakening of near-horizontal weak structural surfaces of dam foundations

A weak structural surface and strength technology, applied in hydraulic models and other directions, can solve the problem that the shear strength cannot continue to decrease, and achieve the effect of increasing the strength reduction range, reducing mechanical parameters, and accurate test results.

Active Publication Date: 2020-05-08
SICHUAN UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned patent documents simulate the mechanical test of the weak layer through the geological temperature-sensitive material and the temperature control system, but from the temperature change curve, the shear strength of the geological temperature-sensitive material cannot continue to decrease after the temperature exceeds 40°C

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for simulating strength weakening of near-horizontal weak structural surfaces of dam foundations
  • A method for simulating strength weakening of near-horizontal weak structural surfaces of dam foundations
  • A method for simulating strength weakening of near-horizontal weak structural surfaces of dam foundations

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A method for simulating the strength weakening of a near-horizontal weak structural surface of a dam foundation, comprising the following steps:

[0042] S1. According to the different fault structure planes and weak interlayers, prepare several different similar materials for temperature rise and drop strength. The components of the temperature rise and drop strength similar materials include copper metal foil, grease, polymer material small white balls and films, and the grease is lithium-based lubricating oil. The small white balls of polymer materials are polymer microspheres in ion exchange resins, and the film is wax paper; the preparation method is to first smear a layer of grease on the copper metal foil, and then evenly paste a layer of the above grease on the grease. Small white balls of polymer materials, and finally covering the film, can obtain the similar material of temperature rise and drop strength;

[0043] S2. Carry out a temperature-rising and decrea...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for simulating the strength weakening of a near-horizontal weak structural surface of a dam foundation, comprising the following steps: S1. preparing similar materials with different temperature rise and drop strength; S2. performing a temperature rise drop strength shear test on the temperature rise drop strength similar materials, Obtain the analytical expression of the temperature rise and drop strength curve of the temperature rise and drop strength similar materials; S3. use the geomechanics model material to simulate the dam foundation, and use the temperature rise and drop strength similar materials to simulate each weak structural surface; S4. Arranging a heating system and a temperature control system in the similar material with reduced strength; S5. Obtain the strength reduction range of the model in different regions by varying the temperature of several similar materials with increased temperature and reduced strength. The invention achieves the effect of carrying out tests with a large range and a high strength reduction range.

Description

technical field [0001] The invention relates to the field of geological information acquisition, in particular to a method for simulating the strength weakening of a near-horizontal weak structural surface of a dam foundation. Background technique [0002] There are three kinds of failure test methods in geomechanics model test, namely overload method, strength reduction method (strength reserve method) and comprehensive method. Among them, the comprehensive method combines the overload method and the strength reduction method, which not only takes into account the sudden flood that may be encountered in the project, but also takes into account the mechanical parameters of the rock mass and weak structural surfaces during the long-term operation of the project under the action of reservoir water. Gradually reduce the possibility of obtaining various factors affecting the stability of the dam, so it is more in line with engineering reality. [0003] However, in the model tes...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E02B1/02
CPCE02B1/02
Inventor 杨宝全陈媛陈建叶董建华张林胡成秋李朝国罗敏刘子安张芮瑜
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com