Metal mine underground high-concentration continuous filling device

Abstract

The invention provides an underground high-concentration continuous filling device for a metal mine, which belongs to the technical field of mining and comprises a big data information processing system, a filtering unit, an ultrasonic information collecting device, an electronic signal terminal server and an ultrasonic visiting device. The electronic signal interruption server is used for controlling the ultrasonic detection device to operate, the ultrasonic information collection device collects ultrasonic signals, the ultrasonic signals are processed by the filtering unit and then enter the big data information processing system, and the big data information processing system obtains the filling compactness according to the ultrasonic signals. Filler is supplemented for the area with the compactness not reaching the standard through equipment, underground high-concentration continuous filling operation is achieved, reference is provided for actual engineering filling effect evaluation through effective and accurate operational analysis, and the high-quality mine filling requirement is met.

Description

Technical Field

[0001] The invention belongs to the technical field of mining, and in particular relates to a high-concentration continuous filling device for underground metal mines. Background Art

[0002] In modern mining, especially in precious metal mining, underground filling technology has become an indispensable technology in mining engineering to improve resource recovery rates and ensure mine safety and environmental friendliness. By filling mine cavities, underground filling technology not only effectively improves ore body stability and reduces the risk of mine collapse, but also reduces waste storage and environmental pollution. In precious metal mining, due to the complex ore bodies and large variability in ore grades, underground filling technology plays a vital role in improving mine production efficiency and extending mine lifecycles.

[0003] The mining process of precious metals such as gold produces a large amount of beneficiation tailings. Tailings are mainly solid waste formed during the beneficiation process and are usually backfilled into underground goafs as aggregate. The disposal of beneficiation tailings is a major issue that restricts the high quality and sustainable development of mines. The discharge of tailings into tailings ponds not only occupies surface area but also poses a huge safety hazard to the surrounding area. Lifting them to the surface increases the cost of lifting. An economical and effective method is to use beneficiation tailings as backfill aggregate into underground goafs, which is widely used by underground mines. In addition, for precious metal mining, due to the high economic properties of the ore, shallow hole blasting and selective approach are usually used. However, when the side walls of the mining approach are used as backfill, the exposed surface of the backfill is affected by carbonization to form a loose layer on the surface. When mixed with the ore, it causes loss and depletion of precious metal ore.

[0004] The Chinese patent with the authorization announcement number CN221823869U discloses a filling structure and filling equipment for the goaf area of ​​an underground mine, including: a filling layer, hanging bars, a mesh and a water filter pipe. The filling layer includes a first filling layer and a second filling layer, the first filling layer is used to fill the bottom of the goaf, and the second filling layer is used to fill the space between the first filling layer and the top of the goaf. The hanging bars are arranged in the filling layer, and the hanging bars extend along the height direction of the goaf. The mesh is arranged in the filling layer, the mesh is laid flat, and the mesh is tied to the hanging bars. The water filter pipe is arranged in the filling layer, and one end thereof is arranged outside the filling layer. This existing technology uses hanging bars to increase the filling strength of the goaf, which makes underground construction difficult. At the same time, the outer surface does not have an explosion-proof effect. During mining, it is affected by the blasting force, resulting in the exposed side of the filling body being damaged and falling off. Summary of the Invention

[0005] The present invention addresses the problems of the prior art, and the technical solution adopted in this application is: a high-concentration continuous filling device for underground metal mines, including a big data information processing system, a filtering unit, an ultrasonic information collection device, an electronic signal terminal server and an ultrasonic detector. The ultrasonic detector detects the filling area to obtain an ultrasonic signal, and the electronic signal interrupt server is used to control the operation of the ultrasonic detection device. The ultrasonic information collection device collects the ultrasonic signal and enters the big data information processing system after processing by the filtering unit. The big data information processing system obtains the filling density according to the ultrasonic signal, and uses equipment to supplement the filling material in areas where the density does not meet the standard, thereby realizing high-concentration continuous filling operations underground and meeting the high-quality filling requirements of mines.

[0006] Furthermore, the front end of the probe of the ultrasonic exploration device's overall structure is a multi-frequency piezoelectric chip assembly, which is in direct contact with the medium to be measured; it is composed of three layers of concentric ring-shaped piezoelectric chips, corresponding to operating frequencies of 1MHz, 3MHz and 5MHz respectively; close to the back of the multi-frequency piezoelectric chip assembly is a spherical focusing backing structure, which not only provides mechanical support, but also can achieve natural focusing of sound waves.

[0007] Furthermore, an adaptive matching network is installed approximately 5 mm behind the spherical focusing backing structure; the network achieves optimal impedance matching at different frequencies by dynamically adjusting the capacitance and inductance values; followed by a signal generator and a signal receiving and processing unit; these two units are connected by a high-speed digital bus to ensure precise control of the transmitted signal and real-time processing of the received signal.

[0008] Furthermore, the frequency selection control unit adopts a flexible PCB design, which surrounds the middle of the probe and is connected to all other electronic units, playing a role of central control and coordination; the intelligent cooling system is distributed throughout the entire internal space of the probe.

[0009] Furthermore, the electronic signal terminal server includes a main control unit, a serial port processing circuit, a network interface circuit, a serial port interface, and a network interface. The main control unit is connected to the serial port processing circuit and the network interface circuit to perform signal conversion between the Ethernet protocol and the serial port protocol. The main control unit includes a network protocol module, a communication scheduling module, and a web configuration module. The communication scheduling module includes a communication scheduling program, and the web configuration module includes a web configuration program.

[0010] Furthermore, the filtering unit includes a resonance unit, and the filter may be a bandpass filter or a bandstop filter.

[0011] Furthermore, the big data information processing system includes a high-speed interface module, a multi-core DSP circuit module, an FPGA data preprocessing module and an auxiliary circuit module; the high-speed interface module: receives remote data, information processing board data and bus data from external devices; receives remote data request signals and inter-board data request signals from the multi-core DSP circuit module, and sends the remote data and information processing board data to the multi-core DSP circuit module; receives bus differential data request signals from the FPGA data preprocessing module, and sends the bus data to the FPGA data preprocessing module.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are: The present application provides a high-concentration continuous filling device for underground metal mines, including a big data information processing system, a filtering unit, an ultrasonic information collection device, an electronic signal terminal server and an ultrasonic detection device. The filling density is obtained according to the ultrasonic signal, and the equipment is used to supplement the filling material in the area where the density does not meet the standard, so as to realize the high-concentration continuous filling operation underground and meet the high-quality filling requirements of the mine. After grouting the thick Luohe Formation aquifer on the roof of the coal mine with a polymer water-absorbing resin material, the aquifer crack situation, the water source situation of the water inrush and the ultrasonic flow velocity detection situation are first selected as the primary indicators, and the average width of the coal seam roof cracks and the average density of the coal seam roof cracks are taken as the primary indicators. , coal seam mining height, fracture roof burial depth, geological structure, aquifer conditions, the angle between the ultrasonic beam and the water flow direction, the propagation time of the ultrasonic beam in the positive direction, and the propagation time of the ultrasonic beam in the reverse direction are taken as secondary indicators; then, based on the above indicators, the membership function of the aquifer fracture condition, the membership function of the water inrush source condition, and the membership function of the ultrasonic flow velocity detection condition are established; finally, the formula is combined to perform superposition calculations between the various sub-items to obtain the total membership, and then the filling effect is comprehensively evaluated based on the judgment indicators. The method provides a reference for the actual engineering evaluation of the filling effect through effective and accurate calculation and analysis, and meets the high-quality filling requirements of mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 This is a schematic structural diagram of a high-concentration continuous filling device for underground metal mines according to the present invention; Among them, 12. Big data information processing system, 13. Filter unit, 14. Ultrasonic information collection device, 15. Electronic signal terminal server, 16. Ultrasonic visitor device. DETAILED DESCRIPTION

[0015] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0016] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] Example 1, as Figure 1 As shown, the present application provides a high-concentration continuous filling device for underground metal mines, including a big data information processing system, a filtering unit, an ultrasonic information collection device, an electronic signal terminal server and an ultrasonic detection device. The ultrasonic detection device detects the filling area to obtain an ultrasonic signal. The electronic signal interrupt server is used to control the operation of the ultrasonic detection device. The ultrasonic information collection device collects the ultrasonic signal and enters the big data information processing system after processing by the filtering unit. The big data information processing system obtains the filling density according to the ultrasonic signal, and uses equipment to supplement the filling material in the area where the density does not meet the standard, thereby realizing high-concentration continuous filling operations underground and meeting the high-quality filling requirements of the mine.

[0018] The ultrasonic imaging device's probe structure features a multi-frequency piezoelectric chip assembly at the front end, directly contacting the medium under test. It consists of three concentric piezoelectric chips, corresponding to operating frequencies of 1 MHz, 3 MHz, and 5 MHz. Immediately behind the multi-frequency piezoelectric chip assembly is a spherical focusing backing structure. This structure not only provides mechanical support but also enables natural focusing of sound waves. Approximately 5 mm behind the spherical focusing backing structure, an adaptive matching network is installed. This network dynamically adjusts the capacitance and inductance values ​​to achieve optimal impedance matching at different frequencies. Following this are the signal generator and the signal receiving and processing unit. These two units are connected by a high-speed digital bus, ensuring precise control of the transmitted signal and real-time processing of the received signal. The frequency selection control unit, designed using a flexible PCB, wraps around the center of the probe and connects to all other electronic units, providing central control and coordination. An intelligent cooling system is distributed throughout the probe's interior. It includes microchannels surrounding the inner wall, a micro water pump at the probe's rear end, and temperature sensors distributed around key components. The data analysis and visualization module is located at the rear of the probe. It connects to the signal receiving and processing unit via a high-speed interface and is responsible for final data processing and image reconstruction. All of these components are enclosed within the probe housing. The front of the housing features an acoustically transparent window made of polyvinylidene fluoride (PVDF). A sealed interface panel is located at the rear of the housing, housing the power, data, and coolant connections.

[0019] The electronic signal terminal server includes a main control unit, a serial port processing circuit, a network interface circuit, a serial port interface and a network interface; the main control unit is connected to the serial port processing circuit and the network interface circuit to perform signal conversion between the Ethernet protocol and the serial port protocol. The main control unit includes a network protocol module, a communication scheduling module and a Web configuration module, wherein the communication scheduling module includes a communication scheduling program and the Web configuration module includes a Web configuration program. The network protocol module is used to provide different network protocols to the outside. The communication scheduling module is connected to each serial port through a circuit and controls the connection with each serial port signal through a switching switch. The Web configuration module is used to provide web services to the outside and complete the device network configuration and serial port function configuration through web services. It supports status query, event triggering and alarm reporting for different state variable ID types in the SECS communication protocol. The state variable ID type includes but is not limited to any of the following items: CEID, SVID, DVID, ReportID, ALID.

[0020] The filtering unit includes a resonance unit, and the filter can be a bandpass filter or a bandstop filter. Furthermore, the filter can be a multi-passband bandpass filter or a multi-stopband bandstop filter. For example, arranging an embedded cross-finger structure directly below the metal microstrip line can constitute a bandstop filter. More specifically, directly below the above-mentioned metal microstrip line can refer to an area where the embedded cross-finger structure is arranged with the central axis of the projection of the metal microstrip line (that is, the projection of the metal microstrip line on the plane where the defective ground structure is located) as the symmetry axis, which can introduce a transmission zero point for the filter, that is, constitute a bandstop filter. The resonance unit and the embedded cross-finger structure in the resonance unit are symmetrical with the central axis of the projection coverage area of ​​the T-shaped microstrip line, thereby introducing a transmission zero point for the filter to constitute a bandstop filter.

[0021] The big data information processing system includes a high-speed interface module, a multi-core DSP circuit module, an FPGA data preprocessing module, and an auxiliary circuit module. The high-speed interface module receives remote data, information processing inter-board data, and bus data transmitted from external devices; receives remote data request signals and inter-board data request signals from the multi-core DSP circuit module, and sends the remote data and information processing inter-board data to the multi-core DSP circuit module; receives bus differential data request signals from the FPGA data preprocessing module, and sends bus data to the FPGA data preprocessing module. The high-speed interface module includes a gigabit network interface, a Spacewire interface, and a RapidIO interface. The gigabit network interface receives remote data transmitted from external devices and, upon receiving the remote data request signal from the multi-core DSP circuit module, transmits the remote data to the multi-core DSP circuit module. The RapidIO interface receives inter-board data from external devices and, upon receiving the inter-board data request signal from the multi-core DSP circuit module, transmits the inter-board data to the multi-core DSP circuit module. The Spacewire interface receives bus data from external devices and, upon receiving the bus differential data request signal from the FPGA data preprocessing module, transmits the bus data to the FPGA data preprocessing module.

[0022] The work includes the following steps: First, grouting is carried out on the extremely thick Luohe Formation aquifer in the coal mine roof. The specific grouting is different from the cement and gypsum in the existing technology. Instead, a high molecular water-absorbent resin material is used. Specifically, the raw materials of the high molecular water-absorbent resin material are: sodium polyacrylate high molecular water-absorbent resin and azobisisobutyronitrile. The sodium polyacrylate high molecular water-absorbent resin is selected, which is a low cross-linking or partially crystalline high molecular polymer with many hydrophilic groups. It can absorb about 500 times its own weight in water and has strong water absorption and water retention.

[0023] The automatic filling control system includes a grouting pipeline, a flow control valve, and a slurry transport pipe. The grouting pipeline is connected to the slurry transport pipe, which transports slurry and pumps the slurry into the grouting pipeline. Grouting boreholes are arranged in the coal mine goaf, and the grouting pipeline is embedded in the grouting boreholes. One end is connected to the slurry transport pipe, and the other end is inserted into the roof cracks to grout the roof. The flow control valve is installed at the connection between the slurry transport pipe and the grouting pipeline to control the flow rate of the slurry transport, thereby achieving the effect of controlling the grouting process.

[0024] The automatic filling control system is controlled by a control system, which includes a flow monitor and a single-chip microcomputer. The flow monitor is installed on the slurry transport pipe and can measure the amount of slurry pumped into the grouting pipeline from the slurry transport pipe; the single-chip microcomputer is used to receive and analyze the digital information obtained by the instrument, and can set the flow threshold, and is connected and controlled through optical fiber.

[0025] A closed plate wall is provided at the starting end of the filling access road, a top plate is installed on the top of the closed plate wall, a filling pipe is hung at the bottom of the top plate, the outlet of the filling pipe is higher than the filling access road surface, an anti-explosion protection layer is provided on the side of the filling access road close to the adjacent construction access road, a tailings pile is stacked inside the filling access road, and a bottom drainage channel is formed inside the conical tailings pile.

[0026] Determine the area to be treated and filled in the expanded chamber before the mine floor is pulled out; the area to be treated and filled is located between the bottom plate filling body and the top plate and on one side of the cross section of the reserved chamber; A governance filling body is set in the filling area to be governed, and the upper and lower ends of the governance filling body are connected to the roof and the bottom plate filling body in a one-to-one correspondence; the governance filling body is used to reshape the bottom structure of the mine room corresponding to the filling area to be governed so that a force support is formed between the bottom plate filling body and the roof corresponding to the filling area to be governed; a governance filling body can be set in the filling area to be governed of the chamber before the bottom is pulled, and the governance filling body can form a supporting structure between the top corresponding to one side of the reserved chamber cross section and the bottom plate filling body, support the rootless triangular ore body, and achieve the purpose of reshaping the bottom structure of the mine room. Under the premise that the reserved chamber can be retained for mining, the side of the reserved chamber cross section is restored to the state before expansion, to prevent the risk of roof collapse during the mid-section mining process, thereby improving the safety of construction operations.

[0027] After grouting the thick Luohe Formation aquifer in the coal mine roof with high molecular weight water-absorbing resin material, a grouting effect evaluation method was studied. In this evaluation method, the aquifer crack conditions, water inrush source conditions and ultrasonic flow velocity detection conditions were first selected as primary indicators, and the average width of coal seam roof cracks, average density of coal seam roof cracks, coal seam mining height, crack roof burial depth, geological structure, aquifer conditions, the angle between the ultrasonic beam and the water flow direction, the propagation time of the ultrasonic beam in the positive direction and the propagation time of the ultrasonic beam in the reverse direction were selected as secondary indicators; then, based on the above indicators, the membership functions of the aquifer crack conditions, the water inrush source conditions and the ultrasonic flow velocity detection conditions were established; finally, the formula was combined to perform superposition calculations between the various sub-items to obtain the total membership, and then the filling effect was comprehensively evaluated based on the judgment indicators. The method provides a reference for evaluating the filling effect in actual engineering through effective and accurate calculation and analysis.

[0028] The above description is merely a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the present invention may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A high-concentration continuous filling device for underground metal mines, characterized in that: It includes a big data information processing system, a filtering unit, an ultrasonic information collection device, an electronic signal terminal server and an ultrasonic detection device. The ultrasonic detection device detects the filling area to obtain an ultrasonic signal. The electronic signal interruption server is used to control the operation of the ultrasonic detection device. The ultrasonic information collection device collects the ultrasonic signal and enters the big data information processing system after processing by the filtering unit. The big data information processing system obtains the filling density according to the ultrasonic signal. For areas where the density does not meet the standard, the equipment is used to supplement the filling material, thereby realizing high-concentration continuous filling operations underground and meeting the high-quality filling requirements of the mine.

2. The high-concentration continuous filling device for underground metal mines according to claim 1, characterized in that: The front end of the overall structure of the probe of the ultrasonic inspection device is a multi-frequency piezoelectric chip component, which is in direct contact with the medium to be measured.

3. The high-concentration continuous filling device for underground metal mines according to claim 2, characterized in that: The multi-frequency piezoelectric chip assembly consists of three layers of concentric ring-shaped piezoelectric chips, corresponding to operating frequencies of 1MHz, 3MHz and 5MHz respectively; close to the back of the multi-frequency piezoelectric chip assembly is a spherical focusing backing structure, which not only provides mechanical support but also enables natural focusing of sound waves.

4. The high-concentration continuous filling device for underground metal mines according to claim 3, characterized in that: An adaptive matching network is installed approximately 5 mm behind the spherical focusing backing structure; the network achieves optimal impedance matching at different frequencies by dynamically adjusting the capacitance and inductance values. This is followed by a signal generator and a signal receiving and processing unit; these two units are connected by a high-speed digital bus to ensure precise control of the transmitted signal and real-time processing of the received signal.

5. The high-concentration continuous filling device for underground metal mines according to claim 4, characterized in that: The frequency selection control unit adopts a flexible PCB design, wraps around the middle of the probe, and is connected to all other electronic units, playing a role of central control and coordination; the intelligent cooling system is distributed throughout the entire internal space of the probe.

6. The high-concentration continuous filling device for underground metal mines according to claim 1, characterized in that: The electronic signal terminal server includes a main control unit, a serial port processing circuit, a network interface circuit, a serial port interface, and a network interface. The main control unit is connected to the serial port processing circuit and the network interface circuit to perform signal conversion between the Ethernet protocol and the serial port protocol. The main control unit includes a network protocol module, a communication scheduling module, and a web configuration module. The communication scheduling module includes a communication scheduling program, and the web configuration module includes a web configuration program.

7. The high-concentration continuous filling device for underground metal mines according to claim 1, characterized in that: The filtering unit includes a resonance unit, and the filter can be a band-pass filter or a band-stop filter.

8. The high-concentration continuous filling device for underground metal mines according to claim 1, characterized in that: The big data information processing system includes a high-speed interface module, a multi-core DSP circuit module, an FPGA data preprocessing module and an auxiliary circuit module; the high-speed interface module: receives remote data, information processing board data and bus data from external devices; receives remote data request signals and inter-board data request signals from the multi-core DSP circuit module, and sends the remote data and information processing board data to the multi-core DSP circuit module; receives bus differential data request signals from the FPGA data preprocessing module, and sends the bus data to the FPGA data preprocessing module.

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