Modular Rock Grouting Test Device for Coupled Mining Conditions
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Solution Overview
Problem
Current grouting water blocking technologies in coal mines do not adequately consider the combined effects of temperature, water quality, fracture width, angle, and roughness on grouting material performance and grouting effectiveness, lacking comprehensive testing of these factors.
Innovation Solution
A rock stratum grouting water blocking test device and method that simulates mining conditions by controlling temperature, water pressure, and flow rate, and adjusting fracture parameters to evaluate the influence of these factors on grouting material diffusion and effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If comprehensive testing of multiple coupling factors (temperature, water quality, fracture parameters) is implemented, then the reliability of grouting effect evaluation is improved, but the device complexity increases
Solution Approach 1:
The test device is divided into multiple independent functional modules: a test box for simulating rock strata, a solution box for preparing water quality samples, a pressing plate replacement box for controlling fracture parameters, and separate injection systems for grouting and water. Each module can be independently adjusted and tested, allowing comprehensive multi-factor testing while maintaining manageable system complexity through modular design.
2Measurement precision
If multiple parameters (temperature, pressure, flow rate, fracture width, angle, roughness) are controlled simultaneously, then the measurement precision of grouting material performance is improved, but the ease of operation decreases
Solution Approach 1:
The pressing plates are designed to be replaceable and adjustable, allowing fracture width, angle, and roughness to be dynamically changed between tests. The temperature control system and pressure/flow rate regulation systems enable dynamic adjustment of environmental parameters during testing, allowing precise control of multiple parameters while maintaining operational flexibility.
Solution Approach 2:
The device enables systematic variation of test parameters including temperature (through controlled heating/cooling), water quality (through solution preparation), fracture geometry (through pressing plate replacement), and injection parameters (through pressure and flow rate control). This comprehensive parameter control capability allows precise measurement of grouting material performance under different coupling conditions.
3Adaptability or versatility
If the test device simulates real mining coupling conditions, then the adaptability of grouting material selection is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The pressing plates are designed with specific local geometries to create controlled fracture conditions with particular widths, angles, and roughness characteristics. Different pressing plates can be selected to match specific rock stratum conditions, allowing the device to simulate various local geological environments and improve the adaptability of grouting material selection for different mining conditions.
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 comprehensive testing of grouting materials under various conditions, improving the understanding of grouting performance and effectiveness, and facilitating the selection of suitable materials for different rock types, while controlling temperature, water quality, and pressure to enhance dispersion resistance and grouting efficiency.
Implementation Method 1
the water injection holes are connected with the water pump through a water injection pipe; one or more of grouting holes are connected with the grouting pump through a grouting pipe
Implementation Method 2
each of the water drain pipe and the water injection pipe is provided with a water pressure gauge and a flow meter
Implementation Method 3
a temperature sensor, a weight sensor and a stress sensor are provided inside the test box
Implementation Method 4
a temperature sensor, a weight sensor and a stress sensor are provided inside the test box
Implementation Method 5
a temperature sensor, a weight sensor and a stress sensor are provided inside the test box
Implementation Method 6
the influence of temperature, fracture width, angle and roughness coupling on the diffusion law of the grouting material
Data Source
AI summary
The disclosure provides a rock stratum grouting water blocking test device and method under a mining coupling condition, and relates to the technical field of permeability testing. The device includes a solution box, a test box, a pressing plate replacement box, a grouting pump, a recovery pool and a water pump, the solution box is connected with the test box through a liquid injection pipe, the bottom of the test box is connected with the pressing plate replacement box, the pressing plate replacement box is connected with a bottom plate, and the bottom plate is connected with a control panel. The device can be used for testing the influence of the single-factor or multi-factor coupling action of temperature, water quality, water pressure, water flow and grouting pressure on the grouting effect.