Debris Flow Abrasion Testing Assembly for Removable Concrete Blocks
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Solution Overview
Problem
Existing debris flow abrasion testing devices and methods are inadequate for simulating the high-speed, solid-liquid two-phase flow dynamics of debris flows, leading to inefficiencies in concrete structure testing and inaccurate abrasion evaluations due to cumbersome block mounting and removal processes, and the inability to effectively convert indoor testing data to on-site engineering assessments.
Innovation Solution
An improved double-axis rolling wear resistance testing device with a redesigned testing block box assembly featuring a fixing member, limiting member, and placeholder/disassembling members, along with a method for debris flow abrasion testing that includes precise material preparation, loading, and data analysis to evaluate abrasion quantity using field and indoor data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional underwater abrasion testing devices are used with high rotational speed (1200 rpm), then the testing can be performed, but the centrifugal force causes the center of the concrete sample to not produce abrasion damages, which does not reflect actual debris flow conditions
Solution Approach 1:
The patent changes the motion parameters from high-speed rotation (1200 rpm) to low-speed translation (0.5-5 m/s) to match actual debris flow conditions. This parameter change eliminates centrifugal force effects and enables accurate simulation of real-world abrasion patterns on concrete surfaces.
2Productivity
If conventional abrasion testing methods are used, then testing can be performed, but the mounting and removal of concrete testing blocks is cumbersome and reduces experimental efficiency
Solution Approach 1:
The testing block box is divided into a removable block placement chamber and a fixed testing chamber. The testing block can be independently placed and removed from the placement chamber without moving the entire testing apparatus, significantly simplifying the mounting and removal process and improving experimental efficiency.
3Measurement precision
If indoor abrasion testing is performed with conventional devices, then testing data can be obtained, but the data cannot be effectively converted to on-site engineering assessments
Solution Approach 1:
The testing device incorporates adjustable parameters (flow velocity, particle size, solid-liquid ratio) that can be modified to match various actual engineering conditions. This multi-functionality enables the same device to generate data applicable to different debris flow scenarios and engineering structures, bridging the gap between laboratory testing and field assessment.
4Adaptability or versatility
If conventional testing devices are used, then testing can be performed, but they are not compatible with high bulk density, wide particle gradation, and multi-phase mixing of debris flow
Solution Approach 1:
The device employs dynamic adjustment capabilities where flow velocity, particle composition, and liquid content can be varied during testing to replicate the heterogeneous and changing conditions of actual debris flows. This dynamic adaptability allows the device to handle high bulk density, wide particle gradation, and multi-phase mixing without requiring multiple specialized devices.
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 solution simplifies the mounting and removal of concrete testing blocks, enhances experimental efficiency, and provides accurate abrasion quantity evaluation by bridging indoor and on-site assessments, ensuring reliable debris flow prevention and control engineering.
Implementation Method 1
The prevention and control engineering structures are often damaged by abrasion due to a collision and rolling friction of coarse particles in the debris flow
Implementation Method 2
The debris flow is a typical solid-liquid two-phase flow, including a solid phase referring to solid coarse particles and a liquid phase mainly referring to a mixture of solid fine particles and water
Data Source
AI summary
A device and a method for debris flow abrasion testing and a method for abrasion quantity evaluation of debris flow prevention and control engineering are provided. The device for debris flow abrasion testing of the present disclosure is an improvement of its own patented product, and a testing block box assembly includes a testing block box, an outer side of the box is apertured and centered with an annular member. The annular member is screwed with a fixing member and a placeholder member. The fixing member fixes the testing block and the placeholder member blocks a sampling operation hole to ensure that a bottom of the box is leveled. The testing block box assembly includes a stop member or a disassembling member.