Automated Permeability Test Device for Grouting Research
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Solution Overview
Problem
Traditional laboratory tests for permeability coefficient determination in impermeable materials are time-consuming, non-automatic, and unable to accurately reflect the permeability of specific grouting areas, and they fail to simulate the groutability of impermeable materials effectively.
Innovation Solution
A laboratory test device comprising a slurry storage device, grouting pump, pressure chamber, slurry collection tank, and computer system, equipped with electromagnetic flow meters, pressure sensors, pH value meter, conductivity meter, and image acquisition system, which automates data acquisition and processing to quickly determine permeability coefficients and evaluate groutability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional constant head permeability test or falling head permeability test is used to determine permeability coefficient, then the permeability coefficient can be determined, but the test takes a relatively long time and cannot automatically acquire and record data
Solution Approach 1:
The patent replaces traditional manual mechanical testing systems with an automated electronic measurement and control system. Multiple sensors (pressure sensors, flow meters, pH meters, conductivity meters) are connected to a computer that automatically acquires, processes, and records data, eliminating the need for manual measurements and calculations while significantly reducing test time.
Solution Approach 2:
The test system performs self-measurement and self-recording through automated data acquisition. The computer system automatically collects data from various sensors, processes the information, and generates test results without requiring continuous human intervention, enabling the system to serve itself in the data collection and analysis process.
2Measurement precision
If traditional permeability test is used, then the average permeability coefficient of a whole soil sample can be obtained, but it cannot reflect the permeability coefficient of a certain grouting area
Solution Approach 1:
The patent divides the soil sample into multiple testing zones by positioning the probe at different locations within the sample. Each measurement point provides localized permeability data, allowing the system to capture spatial variations in permeability characteristics rather than providing only an average value for the entire sample.
Solution Approach 2:
The patent transitions from traditional one-dimensional flow measurement to three-dimensional spatial measurement by using a probe that can be positioned at multiple coordinates within the soil sample. This enables permeability assessment in different spatial dimensions and provides a more comprehensive understanding of permeability distribution.
3Adaptability or versatility
If traditional permeability test is used, then the permeability coefficient can be determined, but it cannot simulate the groutability of the impermeable material
Solution Approach 1:
The patent designs a multi-functional test system that can perform not only permeability measurement but also groutability evaluation, pH measurement, conductivity measurement, and image acquisition. This universal system can assess multiple properties of impermeable materials using a single integrated device, enhancing adaptability while managing complexity through integration.
Solution Approach 2:
The patent employs a composite measurement approach that combines multiple sensing technologies (pressure sensors, flow meters, pH meters, conductivity meters, image acquisition systems) into an integrated test system. This composite system leverages the strengths of each individual sensor type to provide comprehensive material evaluation capabilities.
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
Enables accurate, automatic, and quick determination of permeability coefficients and groutability, facilitating research and development by providing real-time data processing and visualization of the grouting process, thus improving the evaluation of impermeable materials.
Implementation Method 1
a first electromagnetic flow meter and a second electromagnetic flow meter, which are connected with the computer system, are respectively arranged on a connection pipe of the grouting pump and the pressure chamber and a connection pipe of the pressure chamber and the slurry collection tank
Implementation Method 2
the inlet and the outlet are respectively equipped with a lower pressure sensor and an upper pressure sensor, which are connected with the computer system
Implementation Method 3
a pH value meter and a conductivity meter, which are connected with the computer system, are arranged in the slurry collection tank
Implementation Method 4
a pH value meter and a conductivity meter, which are connected with the computer system, are arranged in the slurry collection tank
Implementation Method 5
a grouting principle mainly comprises three manners of permeation grouting, fracturing grouting and compaction grouting. The permeation grouting is: a slurry is filled of the holes of the soil and the fractures of rocks under pressure
Implementation Method 6
an image acquisition system, which is connected with the computer system, is arranged above the pressure chamber
Data Source
AI summary
The present disclosure discloses a laboratory test device for permeation grouting of impermeable material, which comprises a slurry storage device with a stirrer, a grouting pump, electromagnetic flow meters, pressure sensors, a pressure chamber, a slurry collection tank, a pH value meter, a conductivity meter, electronic scales, an image acquisition system and a computer system. The computer system automatically acquires related data to save the labor, and the data is recorded completely so as to facilitate tests and researches. Software installed in the computer system can automatically process the data and displays a permeability coefficient in real time so as to achieve quick determination and real-time display of the permeability coefficient and facilitate development of laboratory tests and researches. Three pressure sensors are arranged on an organic glass cylinder of the pressure chamber at the equal intervals.