Rock gold mine goaf hardened ore treatment method based on high-pressure water technology

Abstract

The invention discloses a rock gold mine goaf hardened ore treatment method based on the high-pressure water technology, and belongs to the technical field of mine engineering. The rock gold mine goaf hardened ore treatment method comprises the steps that a stope high-pressure horizontal platform is arranged in a working area, and a high-pressure water cannon is installed in the stope high-pressure horizontal platform; a high-pressure water pipeline is laid to a high-pressure horizontal table through a pipeline shaft, the high-pressure water pipeline is connected with a fire hose, and the fire hose is connected to a high-pressure water monitor; paving geotechnical cloth in the footwall roadway and the ore removal roadway of the goaf along the trend of the goaf; a high-pressure water cannon is used for gradually separating hardened ores in the stope from top to bottom, so that the ores fall on the geotechnical cloth; according to the whole process, through integrated application of the high-pressure water technology, safe, efficient and low-disturbance treatment of the hardened ore in the rock gold mine goaf is achieved, and the requirements for resource recovery and operation safety are balanced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of mine engineering, and particularly relates to a rock gold mine goaf hardened ore treatment method based on high-pressure water technology. BACKGROUND

[0002] In the process of stoping, the characteristics of the cohesive ore body are particularly prominent. When using blasting operation, the broken ore is easy to be bonded into blocks, and it is difficult to form a uniform loose body, which leads to poor blasting effect, and part of the ore still maintains a large block size and is bonded with each other. In the ore drawing link, the ore is prone to be blocked at the ore pass, ore bin or ore drawing opening of the stope, especially in the process such as shallow hole shrinkage method which relies on the self-weight of the ore to draw the ore, the cohesion will cause the ore drawing rate to be greatly reduced, and the residual proportion far exceeds that of ordinary ore bodies. These characteristics jointly cause the ore body with large cohesion to have low resource recovery rate and restricted production efficiency in the process of stoping, and easily cause a series of problems such as stope blockage and hardened ore accumulation, which become technical difficulties that need to be solved in the mining production. SUMMARY

[0003] In view of the technical problems in the background art, the application provides a rock gold mine goaf hardened ore treatment method based on high-pressure water technology, which comprises the following steps: S1. A water storage pool is arranged in a relatively close roadway at the upper middle section of the stope, and a vertical multi-stage centrifugal pump station and related chamber supporting facilities are built in the surrounding area; S2. A vertical multi-stage centrifugal pump is installed outside the water storage pool, and a butterfly valve and a check valve are arranged at the water outlet end of the vertical multi-stage centrifugal pump; S3. A stope high-pressure water platform is arranged in the working area, and a high-pressure water gun is installed in the stope high-pressure water platform; S4. A high-pressure water pipeline is laid to the high-pressure water platform through a pipe well, a high-pressure water pipe is connected to a fire hose, and the fire hose is connected to the high-pressure water gun; S5. Geotextile is laid along the strike of the goaf in the roadway under the goaf and the ore drawing roadway; S6. The high-pressure water gun is used to gradually separate the goaf hardened ore from top to bottom, so that the ore falls on the geotextile; S7. The shovel truck draws the ore.

[0004] In some embodiments, in step S6, the operation time of operating the high-pressure water gun to separate the stope hardened ore is not more than 20 minutes.

[0005] In some embodiments, in step S6, after the wastewater generated by the operation of the high-pressure water gun to separate the stope hardened ore is completely discharged through the water ditch at the lower middle section, the next part of the stope hardened ore separation operation is performed.

[0006] In some embodiments, in step S6, the wastewater is discharged into the water sump in the lower section through the mining passageway and the slope connecting the two layers.

[0007] In some embodiments, in step S6, the water sump volume is not less than 50 cubic meters.

[0008] In some embodiments, in step S3, the high-pressure water gun is a PS series fixed high-pressure water gun with a built-in pressure boosting system, which can realize high-pressure spraying and remote operation.

[0009] In some embodiments, in step S1, the water storage tank is 15 meters long, 2 meters wide and 1.3 meters high.

[0010] In some embodiments, in step S1, waterproof measures are taken for the bottom and side wall of the water storage tank.

[0011] In some embodiments, in step S2, the equipment foundation of the vertical multi-stage centrifugal pump is a foundation pit with a length of 1.0 meters, a width of 1.0 meters and a depth of 0.6 meters, four round steels with a diameter of 22 millimeters are pre-buried in the foundation pit as pre-buried parts, and the foundation is poured with C25 grade concrete.

[0012] In some embodiments, in step S1, the related chamber supporting facilities include a frequency conversion cabinet chamber, the ground surface of which is higher than the ground surface of the pump house by more than 0.5 meters.

[0013] The application provides a high-pressure water technology-based hardening ore treatment method for rock gold mine goaf, which solves the water source and power stability problems of high-pressure water operation through the matching construction of the water storage tank and the vertical multi-stage centrifugal pump station in S1, provides continuous basic guarantee for the whole system, solves the pressure regulation and equipment protection problems of high-pressure water flow through the combined configuration of the vertical multi-stage centrifugal pump and the valve in S2, realizes accurate matching of the pressure and hardness of the hardening ore, solves the contradiction between the flexibility of high-pressure water transportation and the safety of operation through the collaborative setting of the high-pressure water pipe, the fire hose and the operation platform in S3, ensures that the water flow can accurately act on the target ore body, solves the safety and efficiency problems of non-blasting crushing of hardening ore through the layered operation of the high-pressure water gun in S6, avoids the disturbance risk of traditional blasting, solves the problem of secondary hardening of ore accumulation through the continuous ore mining of the shovel truck in S7, and realizes efficient connection of the treatment process. The whole process realizes safe, efficient and low disturbance treatment of hardening ore in rock gold mine goaf through integrated application of high-pressure water technology, and balances the demand of resource recovery and operation safety.

[0014] The above description is only a summary of the technical solutions of the present application. In order to make the technical means of the present application more clearly understood and implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the present application, the drawings used in the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0016] Figure 1 is a high-pressure water technology-based rock gold mine goaf cemented ore treatment method engineering layout schematic diagram provided in an embodiment of the present application; Figure 2 is a high-pressure water technology-based rock gold mine goaf cemented ore treatment method engineering layout plane schematic diagram provided in an embodiment of the present application; Figure 3 is a high-pressure water technology-based rock gold mine goaf cemented ore treatment method engineering layout section schematic diagram provided in an embodiment of the present application; Figure 4 is a high-pressure water system layout schematic diagram of a high-pressure water technology-based rock gold mine goaf cemented ore treatment method provided in an embodiment of the present application; Figure 5 is a high-pressure water platform layout schematic diagram of a high-pressure water technology-based rock gold mine goaf cemented ore treatment method provided in an embodiment of the present application; Figure 6 is a high-pressure water cannon structure schematic diagram of a high-pressure water technology-based rock gold mine goaf cemented ore treatment method provided in an embodiment of the present application.

[0017] BRIEF DESCRIPTION OF DRAWINGS: 1, upper middle section roadway; 2, lower middle section roadway; 3, stope ventilation shaft; 4, stope cemented ore; 5, ramp; 6, ore drawing through roadway; 7, water storage tank; 8, vertical multi-stage centrifugal pump; 9, high-pressure water pipe; 91, fire hose; 10, pipe shaft; 11, high-pressure water platform; 111, high-pressure water cannon; 12, butterfly valve; 13, check valve; 14, lock catch; 15, primary pressure valve; 16, solenoid valve; 17, butt joint ring; 18, intelligent controller; 19, battery groove; 20, support frame; 21, fastening bolt; 22, turret; 23, infrared range finder; 24, secondary pressure valve; 25, pressure gauge; 26, cannon barrel; 27, cannon head. DETAILED DESCRIPTION

[0018] The embodiments of the present application will be described in detail below with reference to the drawings. The following examples are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot be used to limit the protection scope of the present application.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "comprising," "comprises" and "including" as used herein are synonymous with and meant to have the same meaning as the term "including"; the term "coupled" as used herein means the joining of two members together with one or more intervening members.

[0020] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0021] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0023] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0024] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0025] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0027] For ease of understanding, the embodiments of this application exemplarily provide a mining environment suitable for a method of treating sludge deposits in goaf areas of gold mines based on high-pressure water technology, referring to... Figure 1 and Figure 2 A type of compacted ore mining area includes an upper-middle section roadway 1 located at the top of the mining area and a lower-middle section roadway 2 located at the bottom of the mining area. The upper-middle section roadway 1 and the lower-middle section roadway 2 are connected by a mining area ventilation shaft 3. There is a compacted ore body 4 in the mining area. The compacted ore body 4 is the target ore body to be mined in this application. It exists because the ore particles are cemented and agglomerated due to long-term pressure, humidity and other environmental factors, or under the influence of mining operations, forming a ore body with high hardness and relatively dense structure, which is different from the loose ore morphology. It is often accompanied by the characteristics of ore agglomeration and enhanced integrity. A ramp 5 is excavated from the lower-middle section roadway 2 to the middle of the mining area. Multiple ore extraction tunnels 6 are passed through the middle of the mining area. The multiple ore extraction tunnels 6 are connected to each other through the goaf lower foot roadway and are connected to the ramp 5 through the goaf lower foot roadway.

[0028] Reference Figures 1 to 6A goaf hardening ore treatment method based on high-pressure water technology, S1, a water storage pool 7 is arranged in a relatively close roadway above the middle section of the stope, and a vertical multi-stage centrifugal pump station and related chamber supporting facilities are built in the surrounding area. Specifically, this step provides continuous and stable basic guarantee for the high-pressure water system by pre-establishing a water source reserve and power supply base, and the core role is to ensure sufficient water source and controllable pressure for high-pressure water operation. The water storage pool 7 can buffer water fluctuation, the vertical multi-stage centrifugal pump station is the power core of generating high-pressure water flow, and the related chamber provides a safe space for equipment operation and maintenance, thereby avoiding operation stagnation caused by insufficient water source or power interruption. For example, the water storage pool 7 is arranged in a roadway with a horizontal distance of ≤50 meters from the goaf, and its size is designed to be 8 meters long, 5 meters wide and 3 meters deep (effective water storage capacity ≥100 cubic meters), and C20 concrete is used to pour the pool wall (thickness ≥30 cm) to prevent leakage; a vertical multi-stage centrifugal pump station chamber is built 3-5 meters away from the water storage pool 7, with a cross-sectional size of 4 meters wide, 3.5 meters high and 6 meters long, and an equipment foundation (concrete strength grade C25) is pre-set inside, and a duty room (2 meters x 3 meters) and a tool storage chamber (3 meters x 2.5 meters) are also built, both of which are supported by anchor shotcrete (sprayed concrete thickness 10 cm).

[0029] S2, a vertical multi-stage centrifugal pump 8 is installed outside the water storage pool 7, and a butterfly valve 12 and a check valve 13 are arranged at the outlet of the vertical multi-stage centrifugal pump 8; this step realizes precise control of water pressure and direction by configuring core pressurizing equipment (i.e. vertical multi-stage centrifugal pump 8) and control components, the vertical multi-stage centrifugal pump 8 can generate high pressure through multi-stage impeller superposition, the butterfly valve 12 is used to flexibly adjust the water flow to match different hardening ore hardness requirements, and the check valve 13 can prevent high-pressure water from flowing backward and damaging the pump body, and the three ensure stable system pressure and safe equipment operation. For example, a vertical multi-stage centrifugal pump 8 with a model of DL12-25x5 (flow rate 12 cubic meters per hour, head 125 meters, power 11 kilowatts) is selected and installed on a concrete base 0.5 meters away from the outside of the water storage pool 7 (base height 0.3 meters, fixed with the pump body by bolts); the outlet is connected with a DN80 (i.e. adapting to a nominal diameter of 80 mm) manual butterfly valve 12 (working pressure ≥1.6 MPa, which needs to be customized) and a DN80 (i.e. adapting to a nominal diameter of 80 mm) swing check valve 13 (temperature resistance ≥80℃) in sequence, the valve and the pump body are connected by flange, and the sealing gasket is made of butyronitrile rubber.

[0030] S3, set up a stope high-pressure water platform 11 in the working area, and install a high-pressure water gun 111 in the stope high-pressure water platform 11; this step provides a safe and controllable execution space for high-pressure water operation by building a stable operation reference and deploying core crushing equipment. The stope high-pressure water platform 11, as the bearing base for the operator and equipment, needs to have sufficient structural strength to resist operation vibration and ore falling impact; the high-pressure water gun 111, as the key component directly acting on the cemented ore, its installation position and fixing method directly affect the crushing precision and range. Through the coordinated setting of the platform and the water gun, directional injection of high-pressure water flow can be realized, ensuring that the impact force is concentrated on the target cemented area, and at the same time providing a safe observation and operation angle for the operator. For example, the stope high-pressure water platform 11 is built at a distance of 2-3 meters from the top of the stope cemented ore in the upper part of the goaf, a I-shaped steel welded frame (main beam spacing 1.2 meters) is used, an 8-millimeter-thick anti-slip steel plate (size 6 meters long x 2.5 meters wide) is laid on the platform, a 1.2-meter-high guardrail (guardrail spacing ≤15 centimeters) is set on the edge of the platform, and a 0.8-meter-wide channel is reserved on one side of the platform to connect with the roadway. The high-pressure water gun 111 selects a fixed high-pressure water gun 111 of PSZ-40 type (working pressure 15-25 megapascals, injection angle adjustable within -20° to 60°, effective range ≥20 meters), which is fixed on the steel base (base and platform frame are welded and fixed, flatness error ≤±2 millimeters) in the middle of the platform through M20 expansion bolts, to ensure that the gun body does not have obvious displacement during high-pressure injection. Referring to Figure 5 , for example, the high-pressure water gun 111 includes a lock catch 14 arranged at the bottom, a primary pressure valve 15 connected to the upper part of the lock catch 14, an electromagnetic valve 16 connected to the upper part of the primary pressure valve 15, a docking ring 17 connected to the upper part of the electromagnetic valve 16, and an intelligent controller 18 connected through the docking ring 17, the intelligent controller 18 is provided with a battery slot 19, and is connected with the water gun body through a support frame 20 provided with a turret 22, the turret 22 is provided with a fastening bolt 21 for fixing the water gun body, and the water gun body further includes an infrared range finder 23, a secondary pressure valve 24, a pressure gauge 25, a gun barrel 26, and a gun head 27.

[0031] S4, the high-pressure water pipe 9 is laid to the high-pressure water platform 11 through the pipe well 10, the high-pressure water pipe 9 is connected with the fire hose 91, and the fire hose 91 is connected to the high-pressure water cannon 111; specifically, by constructing a complete high-pressure water conveying link, pressure conduction and flexible connection from the pump station to the operation terminal are realized. The pipe well 10 serves as a closed conveying channel, which can protect the high-pressure water pipe 9 from external interference such as surrounding rock extrusion and rockfall impact, and reduce pressure loss in long-distance conveying; the connection between the high-pressure water pipe 9 and the fire hose 91 combines rigidity and flexibility, taking into account the pressure resistance and operation flexibility of the pipeline - the rigid high-pressure water pipe 9 ensures pressure stability during long-distance conveying, and the flexible fire hose 91 facilitates adjustment of the water cannon spray angle on the platform according to the position of the hardening ore, and finally through the precise connection of the pipeline and the water cannon, ensures that the high-pressure water flow acts on the target ore body without leakage. For example, a vertical pipe well 10 with a diameter of 1.5 meters is constructed between the upper and lower sections of the stope (formed by smooth blasting, with a 10-centimeter-thick C20 concrete support sprayed on the well wall), and a seamless steel pipe with a pipe diameter of 65 millimeters (material Q235B, pressure rating ≥ 30 megapascals) is selected for the high-pressure water pipe 9, which is fixed by arc-shaped pipe clamps (spacing 2 meters per clamp) inside the pipe well 10, and the pipe clamps are connected to the well wall by expansion bolts. After the pipeline extends from the top of the pipe well 10 to below the high-pressure water platform 11, it is connected to a high-pressure fire hose 91 with a pipe diameter of 75 millimeters (pressure resistance ≥ 25 megapascals, length 15 meters, outer layer made of wear-resistant rubber material) through a DN65 (i.e. a nominal diameter of 65 millimeters) reducing adapter, and three layers of polytetrafluoroethylene sealing tape are wrapped around the adapter and fastened with a throat clamp. The other end of the fire hose 91 is connected to the water inlet of the high-pressure water cannon 111 through a quick connector, and after connection, pressure testing is performed (the test pressure is 1.2 times the working pressure, and the pressure is maintained for 20 minutes without leakage to pass the test.

[0032] S5, the geotextile is laid along the strike of the goaf in the lower roadway of the goaf and the ore extraction roadway 6; specifically, by setting a flexible isolation layer, efficient collection and separation of broken hardening ore are realized, the geotextile can prevent ore from embedding the roadway floor or mixing with waste rock, while reducing impact and wear during ore falling and loss of ore powder, providing a clean and concentrated ore pile for subsequent ore extraction. For example, a long filament geotextile with a weight of 400 grams per square meter is selected, and is laid from the entrance of the lower roadway of the goaf to the end of the ore extraction roadway 6 along the strike of the goaf, with an overlapping width of adjacent geotextiles ≥ 30 centimeters, fixed by nylon rope stitching (stitching interval ≤ 20 centimeters), and geotextile folds are added at the turning points of the roadway (with a reserved expansion amount of 50 centimeters) to prevent tearing.

[0033] S6, gradually separate the goaf cemented ore from top to bottom by using high-pressure water cannon 111, so that the ore falls on the geotextile; specifically, the non-explosive breaking of the cemented ore is realized by the impact force of high-pressure water flow, and the sequence from top to bottom can use gravity to assist the ore to fall, avoiding the collapse of the upper unbroken ore burying the separated ore, and the continuous impact of high-pressure water can peel off the cemented ore layer by layer, especially suitable for dense cemented layers formed by weathering and water seepage cementation, which is safer than traditional blasting methods, without shock wave and flying stone risk, and can accurately control the breaking range and reduce the disturbance to surrounding rock. For example, when operating the high-pressure water cannon 111, first adjust the jet pressure to 12 megapascals, start working from the top edge of the stope cemented ore 4 (10 meters away from the ore surface), impact at an angle of 50° to loosen the edge ore; after the top ore falls on the geotextile, gradually lower the working height (move down 1.5 meters each time), and increase the pressure to 15-18 megapascals to treat the middle dense area, the impact point spacing is kept at 30 centimeters, and the cemented ore is uniformly broken (the size is controlled below 30 centimeters); during the process, a person is arranged to observe the stability of the ore body to avoid sudden falling of large ore.

[0034] S7, shovel truck ore; this step realizes the rapid recovery of broken ore through mechanical transportation, the shovel truck can adapt to the narrow space of the roadway, directly shovel the ore from the geotextile, reduce secondary handling, combined with the orderly breaking of S6, can realize continuous operation of breaking-ore, improve the overall processing efficiency, and avoid the re-cementing caused by long-term accumulation of ore. For example, WJ-1.5 type electric shovel truck (rated load 1.5 tons) is selected, which enters the working area from the ore mining roadway 6, shovels the ore from far to near along the direction of geotextile laying, and the shovel insertion depth is controlled at 30-50 centimeters to prevent the geotextile from being hooked; the "full load" mode is adopted when mining, the ore is transferred to the middle section chute, the ore output per hour is ≥80 tons, the gap between operations is cleaned to remove the fine ore powder on the geotextile to avoid accumulation and ensure that the broken ore can slide smoothly.

[0035] The application solves the water source and power stability problem of high-pressure water operation through the matching construction of the water storage pool 7 and the vertical multi-stage centrifugal pump station in S1, provides continuous basic guarantee for the whole system; solves the pressure regulation and equipment protection problem of high-pressure water flow through the combination of the vertical multi-stage centrifugal pump 8 and the valve in S2, realizes the accurate matching of the hardness of the cemented ore under pressure; solves the contradiction between the flexibility of high-pressure water transportation and the safety of operation through the collaborative setting of the high-pressure water pipe 9, the fire hose 91 and the operation platform in S3, ensures that the water flow can accurately act on the target ore body; solves the safety protection and pressure loss problem of high-pressure pipeline through the pipeline laying of the pipeline well 10 in S4, guarantees the terminal operation pressure; solves the collection and separation problem of broken ore through the laying of the geotextile in S5, reduces the resource loss and subsequent cleaning cost; solves the efficiency and safety problem of non-blasting breaking of cemented ore through the layered operation of the high-pressure water gun 111 in S6, avoids the disturbance risk of traditional blasting; solves the problem of secondary cementation of ore accumulation through the continuous ore mining of the shovel loader in S7, realizes the efficient connection of the processing flow. Through the integrated application of high-pressure water technology, the whole process realizes the safe, efficient and low disturbance treatment of the cemented ore in the rock gold mine goaf, balances the demand of resource recovery and operation safety.

[0036] In some embodiments, with reference to Figure 3 In step S6, the operation time of the high-pressure water gun 111 separating the stope cemented ore 4 is not more than 20 minutes. Specifically, the embodiment limits the single operation time of the high-pressure water gun 111 separating the stope cemented ore 4, which aims to avoid overheat and increased wear of high-pressure equipment caused by long-time operation, reduce the amount of wastewater generated by single operation, reduce the influence of wastewater accumulation on subsequent processes, and ensure the safety and continuity of operation.

[0037] In some embodiments, with reference to Figure 3 In step S6, after the wastewater generated by the operation of the high-pressure water gun 111 separating the stope cemented ore 4 is completely discharged through the lower middle water ditch, the next part of the stope cemented ore 4 separation operation is performed. Specifically, the next stage operation is required after the wastewater is completely discharged, which aims to prevent wastewater accumulation in the operation area, avoid affecting the collection of ore (such as increasing the difficulty of ore mining due to the mixing of ore and water), and prevent the stability of rock mass from being reduced due to wastewater soaking surrounding rock, and ensure the safety of the operation environment.

[0038] In some embodiments, with reference to Figure 5In step S6, the waste water is discharged to the water sump in the lower section through the mining roadway 6 and the slope 5 connecting the two layers. Specifically, the specific discharge path of the waste water is defined, and the waste water is guided to the water sump in the lower section through the mining roadway 6 and the slope 5, forming an orderly waste water collection and treatment channel, avoiding random flow of waste water to pollute the operation area, and facilitating centralized treatment of waste water (such as sedimentation, purification, etc.), which meets the environmental protection and safety specifications of mine operation.

[0039] In some embodiments, in step S6, the volume of the water sump is not less than 50 cubic meters.

[0040] In some embodiments, in step S3, referring to Figure 3 and Figure 6 , the high-pressure water gun 111 is a PS series fixed high-pressure water gun 111 with a built-in supercharging system, which can realize high-pressure spraying and remote operation. Specifically, the present embodiment defines the type and function of the high-pressure water gun 111. The selection of the PS series fixed high-pressure water gun 111 adapts to the high-pressure operation requirements of the mine; the built-in supercharging system can ensure that the spraying pressure meets the strength requirements of the separation of the stope caked ore 4; the remote operation function can reduce the direct operation of personnel in the dangerous area, and improve the operation safety.

[0041] In some embodiments, referring to Figure 2 , in step S1, the water storage tank 7 is 15 meters long, 2 meters wide, and 1.3 meters high. Specifically, the present embodiment defines the specific size of the water storage tank 7. The design of 15 meters long, 2 meters wide, and 1.3 meters high is determined according to the water demand of high-pressure water operation, which can not only ensure continuous water supply for the vertical multi-stage centrifugal pump 8, but also avoid the increase of construction cost and excessive space occupation caused by the large volume of the water storage tank 7, balancing the water supply capacity and practicality.

[0042] In some embodiments, referring to Figure 4 , in step S1, waterproof measures are taken for the bottom and side wall of the water storage tank 7. Specifically, the present embodiment defines the waterproof treatment requirements of the water storage tank 7. The waterproof measures (such as laying waterproof roll material, brushing waterproof paint, etc.) for the bottom and side wall can prevent water leakage, avoid water resource waste, and prevent seepage from affecting the stability of the surrounding rock mass or causing roadway water accumulation, ensuring the efficient operation of the water supply system.

[0043] In some embodiments, referring to Figure 4, in step S2, the equipment foundation of the vertical multi-stage centrifugal pump 8 is a foundation pit with a length of 1.0 meter, a width of 1.0 meter and a depth of 0.6 meter, four round steels with a diameter of 22 millimeters are pre-buried in the foundation pit as pre-buried members, and the foundation is poured with C25 labeled concrete. Specifically, the present embodiment specifies the equipment foundation parameters of the vertical multi-stage centrifugal pump 8. The specific size of the foundation pit, the setting of the pre-buried members and the use of C25 concrete are all to ensure the stability of the equipment installation, prevent displacement or damage due to vibration during pump operation, ensure long-term stable operation and meet the power supply demand of the high-pressure water system.

[0044] In some embodiments, in step S1, the related chamber supporting facilities include a frequency conversion cabinet chamber, the ground surface of which is higher than that of the pump house by more than 0.5 meters. Specifically, the present embodiment limits the setting requirements of the frequency conversion cabinet chamber, and the ground surface of the frequency conversion cabinet chamber is higher than that of the pump house by more than 0.5 meters, which can effectively prevent the accumulated water in the pump house from entering the chamber and damaging the electrical equipment, ensure the normal operation of the frequency conversion cabinet (used for adjusting the speed and pressure of the water pump), and ensure the stable and controllable pressure of the high-pressure water system.

[0045] In some embodiments, referring to Figures 1 to 6 A method for treating caked ore in a goaf by high-pressure water technology, the specific steps are as follows: Step one: select a nearby roadway 12 as a water storage pool 7 in the upper section above the mining area, and arrange a high-pressure pump station and a frequency conversion cabinet chamber near the water storage pool 7.

[0046] Step two: install a vertical multi-stage centrifugal pump 8 outside the water storage pool 7, and connect the butterfly valve 12 and the check valve 13 with the water storage pool 7 pipeline and the water pump outlet.

[0047] Step three: connect the high-pressure water pipe 6 with the fire hose 8, install the high-pressure water cannon 111 on the high-pressure water platform 11 in the mining area, fix it firmly, and then carry out high-pressure water debugging.

[0048] Step four: lay the high-pressure water pipe 9 from the pipe well 10 to the high-pressure water platform 11 in the mining area, and gradually separate the caked ore from the mining area by high-pressure water from top to bottom.

[0049] Step five: lay a layer of geotextile along the strike of the goaf in the goaf lower roadway and the ore drawing roadway 6, and prevent the loss of fine ore by allowing the ore washed down by the high-pressure water cannon 111 to fall on the geotextile.

[0050] Step six: after the treatment of the caked ore in the goaf is completed, use the scraper to transport the ore from the ore drawing roadway to the lower section of the mine shaft, and then lift it to the ground surface through the cage in the vertical shaft.

[0051] The roadway water storage pool 7 is 15 meters long, 2 meters wide and 1.3 meters high. The wastewater generated by the treatment of the caked ore in the goaf is first flowed to the ramp 5 through the ore drawing roadway 6, and then collected into the water sump through the next section of the water ditch.

[0052] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any modification, equivalent replacement and improvement within the technical range disclosed by the present application and within the spirit and principle of the present application should be included in the protection scope of the present application.

[0053] Note that the present application is not limited to the above-described embodiments. The above-described embodiments are merely examples, and embodiments having substantially the same configuration and exerting the same effects as the technical idea within the technical scope of the present application are included in the technical scope of the present application. Furthermore, other modes obtained by applying various modifications to the embodiments or by combining part of the configurations of the embodiments within the scope of the gist of the present application are also included in the scope of the present application.

Claims

1. A method for treating sludge deposits in goaf areas of gold mines based on high-pressure water technology, characterized in that, include: S1. In the middle section above the mining area, select a roadway with a relatively close location to arrange a water storage tank (7), and build a vertical multi-stage centrifugal pump (8) station and related chamber supporting facilities in the surrounding area. S2. Install a vertical multistage centrifugal pump (8) outside the water storage tank (7), and install a butterfly valve (12) and a check valve (13) at the outlet of the vertical multistage centrifugal pump (8). S3. Set up a high-pressure water platform (11) in the working area and install a high-pressure water cannon (111) inside the high-pressure water platform (11). S4. Lay the high-pressure water pipe (9) through the pipe well (10) to the high-pressure water platform (11), connect the high-pressure water pipe (9) to the fire hose (91), and connect the fire hose (91) to the high-pressure water cannon (111). S5. Geotextile is laid along the goaf direction in the lower roadway and the ore exit roadway (6) of the goaf area. S6. Using a high-pressure water cannon (111), the ore in the mining area is gradually separated from top to bottom (4), so that the ore falls onto the geotextile. S7, loader unloading ore.

2. The method for treating sludge deposits in goaf areas of gold mines based on high-pressure water technology according to claim 1, characterized in that, In step S6, the operation time for using the high-pressure water cannon (111) to separate the slab ore (4) in the mining area shall not exceed 20 minutes.

3. A method for treating sludge deposits in goaf areas of gold mines based on high-pressure water technology, as described in claim 2, is characterized in that... In step S6, after the wastewater generated by the high-pressure water cannon (111) in this operation to separate the slab ore in the mining area is completely discharged through the lower middle section water ditch, the next part of the mining area slab ore (4) separation operation will be carried out.

4. A method for treating sludge deposits in goaf areas of gold mines based on high-pressure water technology according to claim 3, characterized in that, In step S6, the wastewater is discharged to the lower middle section water tank through the mine exit tunnel (6) and the ramp connecting the two layers (5).

5. A method for treating sludge deposits in goaf areas of gold mines based on high-pressure water technology according to claim 4, characterized in that, In step S6, the volume of the water tank is not less than 50 cubic meters.

6. A method for treating sludge deposits in goaf areas of gold mines based on high-pressure water technology according to claim 3, characterized in that, In step S3, the high-pressure water cannon (111) is a PS series fixed high-pressure water cannon with a built-in pressurization system to realize high-pressure spraying and remote operation.

7. A method for treating sludge deposits in goaf areas of gold mines based on high-pressure water technology according to claim 1, characterized in that, In step S1, the water storage tank (7) is 15 meters long, 2 meters wide, and 1.3 meters high.

8. A method for treating sludge deposits in goaf areas of gold mines based on high-pressure water technology according to claim 7, characterized in that, In step S1, the bottom and side walls of the water storage tank (7) are waterproofed.

9. A method for treating sludge deposits in goaf areas of gold mines based on high-pressure water technology according to claim 1, characterized in that, In step S2, the foundation of the vertical multistage centrifugal pump (8) is a pit with a length of 1.0 meter × width of 1.0 meter × depth of 0.6 meters. Four round steel bars with a diameter of 22 mm are pre-embedded in the pit as embedded parts. The foundation is poured with C25 grade concrete.

10. A method for treating sludge deposits in goaf areas of gold mines based on high-pressure water technology according to claim 1, characterized in that, In step S1, the relevant chamber supporting facilities include a frequency converter cabinet chamber, the floor of which is more than 0.5 meters higher than the pump room floor.

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