Automatic Simulation Test Bench for Top-Coal Caving Mining
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Solution Overview
Problem
Traditional similar material simulation test devices for top-coal caving mining are limited in their ability to simulate the coal releasing process due to a one-piece structure, manual operation, and inability to accurately replicate the density of coal seams, leading to inefficient and inaccurate testing.
Innovation Solution
An automatic simulation test bench with modular design, including a test bench base, coal seam and strata simulation module, coal releasing simulation module, material recovery module, and automatic mixing system, controlled by a central control system, which allows for adjustable simulation conditions and accurate material preparation to simulate different geological and mining scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual operation is used for mixing, loading and compaction of similar materials, then the device structure can be simple, but the operation time is long and the mixing uniformity is poor
Solution Approach 1:
The patent replaces manual mechanical operations with an automatic mixing system that uses a mixing blade driven by a motor to automatically mix, load and compact the similar materials. This mechanical automation eliminates manual labor while improving mixing uniformity and reducing operation time significantly.
Solution Approach 2:
The mixing system is designed to automatically complete the entire process of mixing, loading and compaction without external intervention. The system serves itself by using the mixing blade to both mix the materials and load them into the mold, then automatically compact them, making the system self-sufficient and highly productive.
2Device complexity
If manual mixing and loading is used, then the device can be simple, but the mixing uniformity and loading accuracy are poor
Solution Approach 1:
The patent replaces manual mixing with a motor-driven mixing blade that rotates at controlled speeds to achieve uniform mixing. The automatic loading mechanism ensures consistent material distribution and compaction thickness, significantly improving manufacturing precision compared to manual operations.
3Device complexity
If traditional cement mixing method is used, then the device structure is simple, but it can only simulate rock stratum parameters not coal seam density
Solution Approach 1:
The patent changes the material parameters by using coal powder mixed with cement and fine sand instead of traditional cement-sand-water mixture. This parameter change allows the similar material to simulate both rock stratum mechanical parameters and coal seam density, greatly enhancing the adaptability and versatility of the simulation device.
Solution Approach 2:
The patent creates a composite similar material by combining coal powder, cement and fine sand in specific proportions. This composite material simultaneously provides the mechanical properties of rock strata and the density characteristics of coal seams, enabling dual-purpose simulation capability.
4Device complexity
If one-piece structure is adopted, then the device structure is simple, but the application range is small
Solution Approach 1:
The patent divides the simulation device into separate functional modules: a mold for shaping, a pressing device for compaction, and an automatic mixing system. This segmentation allows each module to be independently adjusted and configured for different simulation requirements, greatly expanding the application range while maintaining structural clarity.
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 automatic simulation test bench enables more accurate and efficient simulation of the coal releasing process by reducing manual operation, allowing for adjustable simulation conditions and accurate material preparation, thus overcoming the limitations of traditional devices.
Implementation Method 1
each group of the lifting devices includes a driving motor, a driving transmission part and a lifting adjustment screw rod
Implementation Method 2
The pressurizing device is arranged on the top beam and is configured to automatically compact the simulated material and simulate the overburden pressure
Implementation Method 3
The automatic mixing system is located on the outside of the main frame and is configured to realize automatic loading and automatic mixing, and inject the mixed simulation material into the coal seam and strata simulation module
Data Source
AI summary
The disclosure discloses an automatic simulation test bench and a test method for similar materials of top-coal caving mining. Wherein, the test bench includes a test bench base, a coal seam and strata simulation module, a coal releasing simulation module, a material recovery module, automatic mixing system and a central control system. The disclosure adopts modular construction to meet the requirements of similar material simulation test of top-coal caving mining under different geological conditions and mining technology to the greatest extent. The disclosure adopts automatic control, reduces the working intensity and operation difficulty of the test personnel, and reduces the influence of human factors on the test results. The disclosure adopts a lifting structural design, so as to meet the requirements of similar simulation test of top-coal caving mining under different mining and caving ratios.