A medium-deep hole charging check valve for water-rich ore body of underground metal mine and installation method thereof

Abstract

This application discloses a deep-hole charging backstop device and its installation method for water-rich ore bodies in underground metal mines, solving the technical problem of explosive slippage during deep-hole charging. The deep-hole charging backstop device for water-rich ore bodies in underground metal mines includes a tube body, a positioning structure, a cantilever beam, and a cap. The positioning structure includes a connecting ring and multiple positioning blades. The connecting ring is detachably fitted to the bottom of the tube body. The multiple positioning blades are spaced circumferentially along the connecting ring, with the end of each blade facing away from the connecting ring inclined outwards and sharp. The cantilever beam is installed inside the tube body. The cap is attached to the top of the tube body. Through the design of the positioning structure, the deep-hole charging backstop device for water-rich ore bodies in underground metal mines disclosed in this application effectively prevents the charging backstop device from slipping. On the one hand, it provides friction to the emulsion explosive to prevent it from slipping; on the other hand, it provides support to the explosive cartridge or charge to prevent it from falling.

Description

Technical Field

[0001] This application belongs to the field of deep-hole blasting technology, specifically relating to a medium-deep hole charging check valve for water-rich ore bodies in underground metal mines and its installation method. Background Technology

[0002] With the depletion of upstream resources, mineral resource extraction has shifted from open-pit to underground, and from shallow to deep. Among the many mining methods used in underground mining, upward-growing medium-deep hole blasting schemes are all designed. However, during the filling of upward-growing medium-deep blast holes in underground mines, the problem of explosive slippage due to groundwater and the weight of the explosives themselves has become a common and unresolved issue.

[0003] Due to groundwater infiltration and the influence of aquifers in the strata, a large number of medium-deep boreholes develop a water film on their surface after formation, or remain in a constantly moist state, resulting in a sharp decrease in surface friction. Furthermore, during the loading of explosives into these medium-deep boreholes, the emulsion explosives, under their own weight, are prone to sliding down these smooth borehole walls, leading to uneven explosive distribution and leakage of explosives from the borehole. This reduces the blasting efficiency and compromises blasting safety. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a deep-hole charge check valve for water-rich ore bodies in underground metal mines and its installation method.

[0005] The technical solution adopted to achieve the purpose of this application is as follows: In the first aspect of this application, the present invention discloses a deep-hole charge check valve for water-rich ore bodies in underground metal mines, comprising:

[0006] tube body;

[0007] The positioning structure includes a connecting ring and multiple positioning fan blades. The connecting ring is detachably engaged with the bottom of the tube body. The multiple positioning fan blades are spaced apart circumferentially along the connecting ring. The end of the positioning fan blade facing away from the connecting ring is inclined outward and the end of the positioning fan blade facing away from the connecting ring is sharp.

[0008] A cantilever beam, installed inside the tube; and

[0009] The cap is attached to the top of the tube.

[0010] In some embodiments, the pipe body is provided with a snap-fit ​​groove, one end of which extends to the top of the pipe body, and the end of the cantilever beam is snapped into the snap-fit ​​groove.

[0011] In some embodiments, the snap-fit ​​groove includes a first groove and a second groove. The first groove is disposed along the height direction of the tube body, and a first end of the first groove extends to the top end face of the tube body. The second groove is disposed along the circumference of the tube body, and the second groove communicates with the second end of the first groove.

[0012] The cantilever beam slides into the first groove and engages with the second groove.

[0013] In some embodiments, an elastic element is provided on the tube body, the elastic element is installed at the second end of the first groove, and the elastic element blocks the second groove when it naturally extends;

[0014] As the suspension beam moves along the first groove toward the second groove, the suspension beam compresses the elastic element and enters the second groove. Afterward, the elastic element recovers and confines the end of the suspension beam within the second groove.

[0015] In some embodiments, a first limiting groove is provided on the suspension beam, the first limiting groove is disposed at the end of the suspension beam, the first limiting groove is used to cooperate with the second groove, and the first limiting groove is disposed towards the bottom of the tube body.

[0016] In some embodiments, a connecting rope is also included, which is connected to the suspension beam.

[0017] In some embodiments, a second limiting groove is provided on the suspension beam, the second limiting groove is positioned facing the top of the tube body, and the connecting rope is connected to the second limiting groove.

[0018] The technical solution adopted to achieve the purpose of this application is as follows: In the second aspect of this application, the present invention also discloses a method for installing a deep-hole charge check valve in a water-rich ore body of an underground metal mine as described in the first aspect above, comprising the following steps:

[0019] Step 1: Assemble the first deep-hole charge check valve: Connect the connecting ring to the bottom of the tube, install the cantilever beam into the tube, and attach the cover to the top of the tube;

[0020] Step 2: Assemble the second deep-hole charge check valve: Connect the connecting ring to the bottom of the tube body, and install the cantilever beam into the tube body;

[0021] Step 3: Fill the first intermediate deep hole charging backstop with mud, then install one cartridge or pellet to the bottom of the first intermediate deep hole charging backstop, and install the other cartridge or pellet to the top of the second intermediate deep hole charging backstop.

[0022] Step 3: Assemble the pill rolls or pills: Connect multiple pill rolls or pills in sequence;

[0023] Step 4: Insert the first medium-deep hole charge backflow preventer, the charge roll or charge, and the second medium-deep hole charge backflow preventer into the borehole in sequence until the first medium-deep hole charge backflow preventer reaches the designated position and is fixed by the positioning fan blade.

[0024] Step 5: Block the bottom of the second deep hole charging check valve with stemming material.

[0025] The technical solution adopted to achieve the purpose of this application is as follows: In the third aspect of this application, the present invention also discloses a method for installing a deep-hole charge check valve in a water-rich ore body of an underground metal mine as described in the first aspect above, comprising the following steps:

[0026] Step 1: Assemble the first medium-deep hole charge check valve: Connect the connecting ring to the bottom of the tube, connect the first end of the connecting rope to the suspension beam of the first medium-deep hole charge check valve, install the suspension beam into the tube, and attach the cover to the top of the tube.

[0027] Step 2: Assemble the second deep-hole charge check valve: Connect the connecting ring to the bottom of the tube, connect the second end of the connecting rope to the suspension beam of the second deep-hole charge check valve, and install the suspension beam into the tube.

[0028] Step 3: Insert the first and second medium-deep hole charge backflow preventers into the borehole in sequence until they reach the designated positions, and then fix them in place using the positioning fan blades.

[0029] Step 4: Inject emulsion explosives upwards from below the second deep-hole charge check valve, so that the explosives adhere to the connecting rope;

[0030] Step 5: Block the bottom of the second deep hole charging check valve with stemming material.

[0031] In some embodiments, in step three, the second deep-hole charge backstop is first sent to the designated position, and then its positioning fan blade is fixed to the borehole wall by pulling down the rope. Then the first deep-hole charge backstop is sent to the designated position and pulled down again to fix the first deep-hole charge backstop.

[0032] As can be seen from the above technical solution, the deep-hole charging check valve for water-rich ore bodies in underground metal mines disclosed in this application includes a pipe body, a positioning structure, a cantilever beam, and a cap. The positioning structure includes a connecting ring and multiple positioning blades. The connecting ring is detachably fitted to the bottom of the pipe body. The multiple positioning blades are spaced apart circumferentially along the connecting ring. The end of each positioning blade facing away from the connecting ring is inclined outwards, and the end of each positioning blade facing away from the connecting ring is sharp. The cantilever beam is installed inside the pipe body. The cap is attached to the top of the pipe body.

[0033] The deep-hole charge backstop device for water-rich ore bodies disclosed in this application, through the design of its positioning structure, can effectively prevent the charge backstop device from sliding or shifting within the blast hole of the water-rich ore body, ensuring the stable position of the charge cartridge and thus improving the blasting effect. Attached Figure Description

[0034] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0035] Figure 1 This is a schematic diagram of a deep-hole charge check valve for a water-rich ore body in an underground metal mine, as shown in one or more embodiments of this application.

[0036] Figure 2 for Figure 1 Cross-sectional schematic diagram of a deep-hole charge check valve in a water-rich ore body of a medium-deep underground metal mine;

[0037] Figure 3 for Figure 1 Schematic diagram of the central tube;

[0038] Figure 4 for Figure 3 Schematic cross-sectional view of the central tube;

[0039] Figure 5 for Figure 1 A schematic diagram of the positioning structure;

[0040] Figure 6 for Figure 5 A cross-sectional view of the central positioning structure;

[0041] Figure 7 for Figure 1 Schematic diagram of the central cantilever beam;

[0042] Figure 8A flowchart illustrating the installation method of filling and fixing explosives into a deep-hole charge check valve in a water-rich ore body of an underground metal mine, as described in one or more embodiments of this application.

[0043] Figure 9 This is a diagram showing the solid explosive installation structure of a deep-hole charge check valve for a water-rich ore body in an underground metal mine, as described in one or more embodiments of this application.

[0044] Figure 10 for Figure 9 A cross-sectional schematic diagram of the installation structure of a deep-hole charge check valve in a water-rich ore body of a medium-deep underground metal mine.

[0045] Figure 11 A flowchart illustrating the installation method of filling liquid explosives into a deep-hole check valve in a water-rich ore body of an underground metal mine, as described in one or more embodiments of this application.

[0046] Figure 12 This is a schematic diagram of the liquid explosive installation structure of a deep-hole charge check valve for a water-rich ore body in an underground metal mine, as shown in one or more embodiments of this application.

[0047] Figure 13 for Figure 12 A cross-sectional schematic diagram of the installation structure of a deep-hole charge check valve in a water-rich ore body of a medium-deep underground metal mine.

[0048] Explanation of reference numerals in the attached figures:

[0049] 1000-First medium-deep hole charge backflow preventer, 2000-Second medium-deep hole charge backflow preventer, 100-Tube body, 110-Snap-fit ​​groove, 111-First groove, 112-Second groove, 120-Elastic element, 200-Positioning structure, 210-Connecting ring, 220-Positioning fan blade, 300-Cantilever beam, 310-First limiting groove, 320-Second limiting groove, 400-Cap body, 500-Connecting rope, 3000-Charge cartridge or charge, 4000-Emulsion explosive. Detailed Implementation

[0050] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0051] Furthermore, reference numerals and / or reference letters may be repeated in different examples in this application. Such repetition is for simplification and clarity purposes and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0052] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0053] Currently, loading explosives into deep holes is a challenge, as reliable, convenient, and cost-effective methods for preventing explosives from falling out cannot be simultaneously achieved. Generally, there are three methods: securing with simple support tools, using ropes for lifting or suspension, and using adhesive materials to attach the explosives.

[0054] The reliability of simple support tools is low. For boreholes with inclined angles or complex geological conditions, simple support tools may not be able to fully adapt to the shape and internal environment of the borehole, and cannot effectively secure the explosive charge. Furthermore, they are only suitable for supporting solid explosive charges and cannot provide good support for emulsion explosives. At the same time, the installation and adjustment of simple support tools often require a lot of time and effort, especially in complex construction environments such as downholes, where the transportation and placement of the tools are quite troublesome, seriously affecting the efficiency of explosive loading.

[0055] There are certain issues with the reliability of rope lifting or suspension. The rope may be damaged during use due to friction with the borehole wall, especially when the borehole wall is rough or has sharp protruding rocks, increasing the risk of rope breakage. Furthermore, when lifting or suspending explosive charges, the charges are prone to swaying on the rope, potentially causing them to collide with the borehole wall and detach from the rope, resulting in a fall. For emulsion explosives, there has been no reliable securing device to ensure the rope is always at the correct tension.

[0056] Adding adhesive materials to explosives for adhesion has limited reliability. The adhesive properties of these materials may be affected in high-temperature, high-humidity, or chemically contaminated borehole environments, causing the explosive charge to separate and fall off. Furthermore, for heavier explosive charges, the adhesive material may not provide sufficient bonding strength to maintain the charge's position within the borehole for an extended period. When targeting emulsion explosives, their composition may also affect the explosive's performance, leading to poor blasting efficiency. Additionally, adhesive materials themselves can be expensive, especially some with specialized formulations. Moreover, maintaining a certain level of reliability may require the use of larger quantities of adhesive material, further increasing costs.

[0057] The present invention aims to optimize the shortcomings of the above-mentioned methods. The present invention discloses a deep-hole charging backstop for water-rich ore bodies in underground metal mines, which can solve the technical problem of explosive slippage during the charging process of deep-hole blasting, thereby improving charging efficiency and blasting effect.

[0058] The technical solution of this application will be described in detail below through specific embodiments:

[0059] See Figure 1 , Figure 2 , Figure 5 and Figure 6 In a first aspect embodiment of this application, a deep-hole charge check valve for underground metal mines with abundant water is provided. The check valve includes a tube body 100, a positioning structure 200, a cantilever beam 300, and a cap 400. The positioning structure 200 includes a connecting ring 210 and multiple positioning blades 220. The connecting ring 210 and the tube body 100 can be detachably connected via threaded connections, snap-fit ​​connections, or other methods. The multiple positioning blades 220 are spaced circumferentially along the connecting ring 210, with the end of each blade facing away from the connecting ring 210 inclined outwards and sharp. The cantilever beam 300 is installed inside the tube body 100. The cap 400 covers the top of the tube body 100, and the cap 400 and the tube body 100 can be detachably connected via threaded connections, snap-fit ​​connections, or other methods.

[0060] The tube body 100 serves as the main structure of the charge backstop and is used to connect various components. The connecting ring 210 is detachably fitted to the bottom of the tube body 100 for easy installation and disassembly. Multiple positioning blades 220 are spaced circumferentially along the connecting ring 210, forming a stable support structure. The positioning blades 220 are angled outwards and sharp at the end facing away from the connecting ring 210. This design allows the positioning blades 220 to be more easily inserted into the borehole wall and form a stable fixation effect within the borehole, effectively preventing the charge backstop from sliding or shifting within the borehole. A suspension beam 300 is installed inside the tube body 100. The suspension beam 300 is used to position the charge cartridge and to install the connecting rope 500. Furthermore, the suspension beam 300 also supports the charge cartridge, preventing it from sliding down due to gravity. The design of the suspension beam 300 can be adjusted according to actual needs to ensure the stable position of the charge cartridge within the tube body 100. The cap body 400 is semi-ellipsoidal in shape. This shape can make full use of the charging space while maintaining its stability. At the same time, its own strength can also be used as a plug for the blast hole to improve the blasting effect.

[0061] The deep-hole charge backstop device for water-rich ore bodies in underground metal mines disclosed in this embodiment, through the design of the positioning structure 200, can effectively prevent the charge backstop device from sliding or shifting in the blast hole of the water-rich ore body, ensuring the stable position of the charge cartridge, thereby improving the blasting effect.

[0062] See Figure 1 , Figure 3 and Figure 4 In one embodiment, the pipe body 100 is provided with a snap-fit ​​groove 110, one end of which extends to the top of the pipe body 100, and the end of the cantilever beam 300 is snapped into the snap-fit ​​groove 110.

[0063] The design of the snap-fit ​​groove 110 not only simplifies the installation process of the cantilever beam 300, but also improves the stability of the cantilever beam 300 within the pipe body 100, preventing it from slipping or moving. The shape and size of the snap-fit ​​groove 110 can be adjusted according to actual needs to accommodate different specifications and types of cantilever beams 300, thereby improving the adaptability and flexibility of the check valve.

[0064] In one embodiment, the snap-fit ​​groove 110 includes a first groove 111 and a second groove 112. The first groove 111 is disposed along the height direction of the tube body 100, and a first end of the first groove 111 extends to the top end face of the tube body 100. This design allows the cantilever beam 300 to slide along the height direction of the first groove 111, facilitating the insertion of the cantilever beam 300 into the appropriate position when assembling the backstop.

[0065] The second groove 112 is arranged along the circumference of the pipe body 100, and the second groove 112 is connected to the second end of the first groove 111. When the suspension beam 300 slides along the first groove 111 to the appropriate position, the suspension beam 300 can be rotated so that its end is inserted into the second groove 112, thereby achieving a stable connection between the suspension beam 300 and the pipe body 100.

[0066] The cantilever beam 300 slides into the first groove 111 and engages with the second groove 112. The sliding fit between the cantilever beam 300 and the first groove 111 allows the cantilever beam 300 to slide easily within the first groove 111, facilitating position adjustment. The engaging fit between the cantilever beam 300 and the second groove 112 ensures that the cantilever beam 300 is securely fixed within the pipe body 100 after engaging with the second groove 112, preventing slippage or movement.

[0067] The design of the first groove 111 and the second groove 112 allows the cantilever beam 300 to be securely fixed inside the tube body 100, maintaining its position even during an explosive detonation and preventing displacement or damage caused by the explosive impact. This further enhances the overall stability and safety of the backstop.

[0068] In one embodiment, an elastic element 120 is provided on the tube body 100. The elastic element 120 is installed at the second end of the first groove 111, and when the elastic element 120 is naturally extended, it blocks the second groove 112. When the suspension beam 300 moves along the first groove 111 toward the second groove 112, the suspension beam 300 compresses the elastic element 120 and enters the second groove 112. Afterward, the elastic element 120 recovers and restricts the end of the suspension beam 300 within the second groove 112.

[0069] As the cantilever beam 300 moves along the first groove 111 toward the second groove 112, its end presses against the elastic element 120. Because the elastic element 120 possesses a certain degree of elasticity and restoring force, when the pressure applied by the cantilever beam 300 is sufficiently large, the elastic element 120 will be compressed and temporarily repositioned, allowing the cantilever beam 300 to enter the second groove 112. Once the cantilever beam 300 is fully inside the second groove 112, the elastic element 120 quickly returns to its original shape and tightly confines the end of the cantilever beam 300 within the second groove 112, thereby ensuring a secure connection between the cantilever beam 300 and the tube body 100.

[0070] The design of the elastic element 120 makes the installation process of the cantilever beam 300 more convenient. The operator only needs to slide the cantilever beam 300 along the first groove 111 and apply slight pressure to the elastic element 120 to easily insert the cantilever beam 300 into the second groove 112. This greatly reduces installation difficulty and time costs. The restoring force of the elastic element 120 ensures that once the cantilever beam 300 is inserted into the second groove 112, it will be subjected to a continuous tightening force, thereby preventing loosening or detachment due to vibration or external forces.

[0071] See Figure 2 and Figure 7 In one embodiment, a first limiting groove 310 is provided on the cantilever beam 300, and the first limiting groove 310 is provided at the end of the cantilever beam 300. The first limiting groove 310 is used to cooperate with the second groove 112, and the first limiting groove 310 is provided facing the bottom of the tube body 100.

[0072] The first limiting groove 310 is disposed at the end of the cantilever beam 300, and its shape and size match the second groove 112. Importantly, the first limiting groove 310 is positioned facing the bottom of the tube body 100. When the cantilever beam 300 slides along the first groove 111 and engages with the second groove 112, the first limiting groove 310 will form a tight fit with the second groove 112, thereby restricting the vertical movement of the cantilever beam 300 within the tube body 100. The design of the first limiting groove 310 makes it easier for the cantilever beam 300 to align with the second groove 112 during installation, reducing installation difficulty and errors.

[0073] In one embodiment, four snap-fit ​​slots 110 are provided, and the four snap-fit ​​slots 110 are evenly arranged along the circumference of the pipe body 100. The cantilever beam 300 is cross-shaped, and the four ends of the cantilever beam 300 are respectively arranged in a one-to-one correspondence with the four snap-fit ​​slots 110.

[0074] Four locking slots 110 are provided, and these four locking slots 110 are evenly distributed along the circumference of the pipe body 100. This design not only improves the fixing stability of the check valve within the pipe body 100, but also allows the cantilever beam 300 to distribute the force more evenly, reducing the risk of damage caused by excessive force at a single point. The cantilever beam 300 is cross-shaped, with its four ends corresponding to the four locking slots 110 one by one. This design not only allows the cantilever beam 300 to engage with all four locking slots 110 simultaneously, improving the stability of the connection, but also allows the cantilever beam 300 to better distribute the force within the pipe body 100, enhancing the overall stability of the check valve.

[0075] In one embodiment, four positioning fan blades 220 are provided, and the four positioning fan blades 220 are evenly arranged along the circumference of the connecting ring 210. The four positioning fan blades 220 can be well engaged and fixed with the sidewall of the borehole. Of course, in other embodiments, three, five or even more positioning fan blades 220 are also possible.

[0076] See Figure 13 In one embodiment, the deep-hole charge check valve for water-rich ore bodies in underground metal mines further includes a connecting rope 500, which is connected to the suspension beam 300.

[0077] The material of the connecting rope 500 needs to have good adhesion, high strength, wear resistance, and corrosion resistance to ensure that it maintains its mechanical properties and stability in extreme environments (such as the humid, high-temperature, and corrosive environments of underground metal mines). Common materials include high-strength synthetic fibers (such as nylon and polyester), metal chains, or hemp rope.

[0078] The connecting rope 500 is used on one hand to connect the two medium-deep hole charge check valves, and on the other hand, it is used to attach the emulsion explosive 4000.

[0079] In one embodiment, a second limiting groove 320 is provided on the suspension beam 300, the second limiting groove 320 is provided facing the top of the tube body 100, and the connecting rope 500 is connected to the second limiting groove 320.

[0080] The design of the second limiting groove 320 ensures that the connecting rope 500 will not slip on the cantilever beam 300 and that the connecting rope 500 can be firmly fixed to the cantilever beam 300 during connection. It also avoids adverse effects on the connecting rope 500 caused by the internal environment of the pipe body 100 (such as humidity or corrosion). The connecting rope 500 is connected to the second limiting groove 320 through a specific connection method (such as a snap, knot, or wrapping). This connection method needs to ensure that the connecting rope 500 will not fall out of the limiting groove when under tension, and also needs to allow the operator to easily separate the connecting rope 500 from the limiting groove when needed.

[0081] Through the above embodiments, this application has the following beneficial effects or advantages: The unique design of the positioning structure 200 of the deep-hole charge backstop device for water-rich ore bodies in underground metal mines disclosed in this application is the key to realizing the backstop function. It is composed of a connecting ring 210 with four positioning fan blades 220 around its perimeter. The diameter of the positioning fan blades 220 after unfolding is larger than the inner diameter of the borehole. When there is a downward tendency, it can automatically insert into the borehole wall by means of compression and friction with the borehole wall, effectively preventing the charge, charge column, or emulsion explosive 4000 from sliding or sinking, ensuring stable backstop function under various working conditions. It can adapt to and reliably brake both vertically upward and obliquely upward deep boreholes. The whole is made of PPR plastic, which not only has good properties such as heat resistance and corrosion resistance, meeting the requirements of use in harsh environments such as underground mines, but also has a relatively low cost. The key internal material, the cross bolt, is made of cost-effective ordinary carbon steel, reducing costs while ensuring performance. The components are assembled by simple plugging, nesting, or binding, without the need for complicated assembly tools and techniques. Assembly can be completed quickly on the construction site, improving the efficiency of explosive loading operations.

[0082] The deep-hole charging check valve disclosed in this application for water-rich ore bodies in underground metal mines provides sufficient support and friction for solid explosive cartridges or charges 3000, preventing them from slipping inside the borehole. For emulsion explosives 4000, the positioning fan blades 220 prevent overall sinking, while the adhesion properties of the hemp rope to the emulsion explosive 4000 matrix allow the explosive to adhere to the rope, solving the slippage problem caused by the smooth borehole wall and gravity. This achieves effective dual application in the loading of both solid and liquid explosives.

[0083] See Figure 8 , Figure 9 and Figure 10 Based on the same inventive concept, the second aspect of this application discloses a method for installing a deep-hole charge check valve in a water-rich ore body of an underground metal mine, as disclosed in any of the embodiments of the first aspect above, which includes the following steps:

[0084] Step 1: Assemble the first deep-hole charge check valve 1000: Connect the connecting ring 210 to the bottom of the tube 100, install the cantilever beam 300 into the tube 100, and attach the cover to the top of the tube 100.

[0085] Step 2: Assemble the second deep-hole charge check valve 2000: Connect the connecting ring 210 to the bottom of the tube 100, and install the cantilever beam 300 into the tube 100;

[0086] Step 3: Filling the gunning mud: Fill the gunning mud into the first medium-deep hole charging backstop 1000, then install one propellant roll or propellant column 3000 to the bottom of the first medium-deep hole charging backstop 1000, and install another propellant roll or propellant column 3000 to the top of the second medium-deep hole charging backstop 2000.

[0087] Step 4: Assemble the medicine rolls or medicine columns 3000: Connect multiple medicine rolls or medicine columns 3000 in sequence;

[0088] Step 5: Insert into the borehole: Insert the first medium-deep hole charge backflow preventer 1000, the charge roll or charge 3000 and the second medium-deep hole charge backflow preventer 2000 into the borehole in sequence until the first medium-deep hole charge backflow preventer 1000 reaches the designated position and is fixed by the positioning fan blade 220.

[0089] Step 6: Block the bottom of the second deep hole charging check valve 2000 with stemming material.

[0090] The installation method of the deep-hole charge check valve for water-rich ore bodies in underground metal mines disclosed in this application provides sufficient support and friction for the solid charge cartridge or charge 3000 and the positioning structure 200, preventing it from slipping in the borehole.

[0091] See Figure 11 , Figure 12 and Figure 13 Based on the same inventive concept, the third aspect of this application discloses a method for installing a deep-hole charge check valve in a water-rich ore body of an underground metal mine as disclosed in any of the first aspects above, which includes the following steps:

[0092] Step 1: Assemble the first medium-deep hole charge check valve 1000: Connect the connecting ring 210 to the bottom of the tube body 100, connect the first end of the connecting rope 500 to the suspension beam 300 of the first medium-deep hole charge check valve 1000, install the suspension beam 300 into the tube body 100, and attach the cover to the top of the tube body 100.

[0093] Step 2: Assemble the second deep hole charge check valve 2000: Connect the connecting ring 210 to the bottom of the tube body 100, connect the second end of the connecting rope 500 to the suspension beam 300 of the second deep hole charge check valve 2000, and install the suspension beam 300 into the tube body 100.

[0094] Step 3: Insert into the borehole: Insert the first medium-deep hole charge backflow preventer 1000 and the second medium-deep hole charge backflow preventer 2000 into the borehole in sequence until the first medium-deep hole charge backflow preventer 1000 and the second medium-deep hole charge backflow preventer 2000 reach the designated position and are fixed by the positioning fan blade 220.

[0095] Step 4: Filling with emulsion explosive 4000: Inject emulsion explosive 4000 upward from below the second deep hole charging check valve 2000, so that the explosive adheres to the connecting rope 500.

[0096] Step 5: Block the bottom of the second deep hole charging check valve 2000 with stemming material.

[0097] The method for installing a deep-hole charge check valve in a water-rich ore body of an underground metal mine disclosed in this application is for emulsion explosive 4000. On the one hand, it uses the clamping effect of the positioning fan blade 220 to prevent the whole body from sinking. On the other hand, it uses the adhesion characteristics of the hemp rope to the emulsion explosive 4000 matrix to make the emulsion explosive 4000 adhere to the hemp rope, thus solving the problem of slippage caused by the smoothness of the borehole wall and the influence of gravity.

[0098] In one embodiment, in step three, the second deep-hole charge backstop 2000 is first sent to the designated position, and then its positioning fan blade 220 is fixed to the borehole wall by pulling down the rope. Then the first deep-hole charge backstop 1000 is sent to the designated position and pulled down again to fix the first deep-hole charge backstop 1000.

[0099] By first fixing the second intermediate-depth hole charge backstop 2000 and then fixing the first intermediate-depth hole charge backstop 1000, the precise positioning of the backstop within the borehole was ensured. The pull-down rope operation is simple and easy, reducing the labor intensity and skill requirements for operators. At the same time, this optimized step makes the entire installation process smoother and more efficient.

[0100] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention have been clearly and completely described above with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0101] Therefore, the above detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0102] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0103] In the description of this invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention 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, and therefore should not be construed as a limitation of this invention.

[0104] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0105] In this invention, unless otherwise expressly specified and limited, "above or below" a first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0106] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0107] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A deep-hole charge check valve for water-rich ore bodies in underground metal mines, characterized in that, include: The tube body is provided with a snap-fit ​​groove, one end of which extends to the top of the tube body; The positioning structure includes a connecting ring and multiple positioning fan blades. The connecting ring is detachably engaged with the bottom of the tube body. The multiple positioning fan blades are spaced apart circumferentially along the connecting ring. The end of the positioning fan blade facing away from the connecting ring is inclined outward and the end of the positioning fan blade facing away from the connecting ring is sharp. A connecting rope is used to connect the two deep-hole charge check valves, and the connecting rope is used to attach emulsion explosives. A cantilever beam is installed inside the tube, with its end engaged in the engagement groove. The cantilever beam is used to secure the medicine roll and to install the connecting rope, and it also supports the medicine roll. The cap is attached to the top of the tube.

2. The deep-hole charging check valve for water-rich ore bodies in underground metal mines according to claim 1, characterized in that, The snap-fit ​​groove includes a first groove and a second groove. The first groove is arranged along the height direction of the tube body, and the first end of the first groove extends to the top end face of the tube body. The second groove is arranged along the circumference of the tube body, and the second groove communicates with the second end of the first groove. The cantilever beam slides into the first groove and engages with the second groove.

3. The deep-hole charging check valve for water-rich ore bodies in underground metal mines according to claim 2, characterized in that, An elastic element is provided on the tube body. The elastic element is installed at the second end of the first groove. When the elastic element is naturally extended, it blocks the second groove. As the suspension beam moves along the first groove toward the second groove, the suspension beam compresses the elastic element and enters the second groove. Afterward, the elastic element recovers and confines the end of the suspension beam within the second groove.

4. The deep-hole charging check valve for water-rich ore bodies in underground metal mines according to claim 2, characterized in that, The suspension beam is provided with a first limiting groove, which is located at the end of the suspension beam. The first limiting groove is used to cooperate with the second groove, and the first limiting groove is positioned towards the bottom of the tube body.

5. The deep-hole charging check valve for water-rich ore bodies in underground metal mines according to claim 1, characterized in that, A second limiting groove is provided on the suspension beam, and the second limiting groove is positioned facing the top of the tube body. The connecting rope is connected to the second limiting groove.

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