Rock Slope Model Material for Water-Rock Interaction
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Solution Overview
Problem
Current rock slope model test materials for simulating water-rock interaction lack stability in physical and hydraulic properties, with cement-based materials exhibiting continuous strength increase and gypsum-based materials softening in water, making it difficult to control test results.
Innovation Solution
A similar material composed of iron powder, quartz sand, barite powder, gypsum, glycerin, water, a gypsum retarding agent, and a dispersible polymer powder, which forms a reinforcing film to enhance cohesion and maintain stability when exposed to water, allowing for controlled physical and hydraulic properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If cement is used as the cementing agent, then the strength of the similar material is high, but the strength continuously increases with curing time and cannot be controlled
Solution Approach 1:
The patent changes the chemical composition parameters by replacing pure cement with a composite system containing gypsum, iron powder, and dispersible polymer powder. This parameter change allows the strength development to be controlled and stabilized rather than continuously increasing, resolving the contradiction between achieving high strength and maintaining strength control.
2Ease of operation
If gypsum is used as the cementing agent, then the material is easy to adjust in terms of hydraulic properties, but the gypsum softens when exposed to water
Solution Approach 1:
The patent creates a composite material system where gypsum is combined with iron powder and dispersible polymer powder. The iron powder provides water stability and prevents gypsum softening, while the polymer powder forms a protective film. This composite approach allows both hydraulic property adjustability and water stability to coexist.
Solution Approach 2:
The iron powder serves multiple functions: it prevents gypsum softening in water, provides ballast effect for density control, and enhances overall water stability. This multi-functionality resolves the contradiction by making the material both adjustable in hydraulic properties and stable in water.
3Ease of manufacture
If common cementing agents are used, then the material can be prepared easily, but the physical and hydraulic properties are unstable when exposed to water
Solution Approach 1:
The patent develops a composite similar material comprising gypsum, iron powder, and dispersible polymer powder. This composite formulation maintains ease of preparation through simple mixing while achieving stable physical and hydraulic properties through the synergistic effects of its components, particularly the water-resistant film formed by the polymer and the stabilizing effect of iron powder.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The material provides stable physical and hydraulic properties, is cost-effective, and environmentally friendly, with adjustable properties for simulating various rock types, enhancing the reliability of rock slope model tests under water-rock interaction.
Implementation Method 1
After being dispersed, the dispersible polymer powder forms a film to play a reinforcing role as a second cementing agent
Implementation Method 2
The film formed by the dispersible polymer powder is distributed in the entire similar material system as a reinforcing material, which increases the cohesion force of the similar material
Implementation Method 3
a gypsum retarding agent
Implementation Method 4
After being dispersed, the dispersible polymer powder forms a film
Data Source
AI summary
Provided are a similar material for a rock slope model test under water-rock interaction, and a preparation method and use thereof. The similar material is prepared from raw materials including the following components: an iron powder, a quartz sand, a barite powder, a gypsum, glycerin, water, a gypsum retarding agent, and a dispersible polymer powder. Further, the method for preparing the similar material for a rock slope model test under water-rock interaction is also provided.