Medium-length hole charging backstop for underground metal mine water-rich ore body and mounting method of medium-length hole charging backstop

Abstract

The invention discloses a medium-deep hole charging backstop for an underground metal mine water-rich ore body and a mounting method of the medium-deep hole charging backstop. The technical problem that explosives slide down in the medium-deep blast hole charging process is solved. The medium-length hole charging backstop of the underground metal mine water-rich ore body comprises a pipe body, a positioning structure, a suspension beam and a cap body. The positioning structure comprises a connecting ring and a plurality of positioning fan blades, the connecting ring is detachably matched with the bottom of the pipe body, the positioning fan blades are arranged at intervals in the circumferential direction of the connecting ring, and the ends, away from the connecting ring, of the positioning fan blades incline outwards and are sharp. The suspension beam is installed in the pipe body. And the cap body covers the top of the pipe body. According to the medium-length hole explosive charging backstop for the underground metal mine water-rich ore body, through the design of the positioning structure, on one hand, the explosive charging backstop can provide friction force for emulsion explosives to prevent the emulsion explosives from sliding down, and on the other hand, the explosive charging backstop can provide supporting force for explosive cartridges or explosive columns to prevent the explosive cartridges or the explosive columns from falling down.

Description

Technical Field

[0001] The present application belongs to the technical field of deep hole blasting, and specifically relates to a medium-deep hole charge check valve for a water-rich ore body in an underground metal mine and an installation method thereof. Background Art

[0002] With the consumption and exhaustion of front resources, the mining status of mineral resources has shifted from open-pit to underground, and from shallow to deep. Among the many mining methods in underground mining, there are designs for upward medium-deep hole blasting. However, in the process of filling upward medium-deep blastholes in underground mines, the problem of explosives sliding due to the effects of groundwater and the gravity of the explosives themselves has become a common problem to be solved.

[0003] Due to the infiltration of groundwater and the influence of aquifers in the strata, a large number of medium-deep blasthole walls are attached with a layer of water film after they are formed, or are in a wet state for a long time, resulting in a sharp decrease in surface friction. At the same time, when charging medium-deep blastholes, emulsion explosives are very likely to slide down along the smooth blasthole walls under the action of their own gravity, resulting in uneven distribution of explosives and causing explosives to flow out of the blasthole, reducing the blasting efficiency of the explosives and failing to ensure blasting safety. Summary of the invention

[0004] In order to solve the above technical problems, the present application provides a medium-deep hole charge check valve for a water-rich ore body in an underground metal mine and an installation method thereof.

[0005] The technical solution adopted to achieve the purpose of this application is that, in the first aspect of this application, the present invention discloses a medium-deep hole charge backstop for a water-rich ore body in an underground metal mine, comprising:

[0006] tube body;

[0007] A positioning structure, comprising a connecting ring and a plurality of positioning blades, wherein the connecting ring is detachably matched with the bottom of the tube body, the plurality of positioning blades are arranged at intervals along the circumference of the connecting ring, the end of the positioning blade away from the connecting ring is inclined outward, and the end of the positioning blade away from the connecting ring is sharp;

[0008] A suspension beam installed in the tube body; and

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

[0010] In some embodiments, a clamping groove is provided on the tube body, one end of the clamping groove extends to the top of the tube body, and the end of the suspension beam is clamped in the clamping groove.

[0011] In some embodiments, the clamping 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 surface of the tube body, the second groove is arranged along the circumference of the tube body, and the second groove is connected to the second end of the first groove;

[0012] The suspension beam is slidably matched with the first groove, and the suspension beam is snap-fitted with the second groove.

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

[0014] When the suspension beam moves along the first groove toward the second groove, the suspension beam squeezes the elastic member and then enters the second groove, and then the elastic member recovers and restricts the end of the suspension beam in the second groove.

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

[0016] In some embodiments, a connecting rope is further included, wherein the connecting rope 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 arranged toward 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 the present application is that, in the second aspect of the present application, the present invention also discloses a method for installing a medium-long hole charge backstop for a water-rich ore body in an underground metal mine as described in the first aspect, comprising the following steps:

[0019] Step 1: Assemble the first medium-deep hole charge backstop: connect the connecting ring to the bottom of the tube body, install the suspension beam into the tube body, and connect the cover body to the top of the tube body;

[0020] Step 2: Assemble the second medium-deep hole charge backstop: connect the connecting ring to the bottom of the tube body, and install the suspension beam into the tube body;

[0021] Step 3: Fill the first medium-deep hole charge backstop with taphole mud, then install a medicine roll or a medicine column to the bottom of the first medium-deep hole charge backstop, and install another medicine roll or a medicine column to the top of the second medium-deep hole charge backstop;

[0022] Step 3: Assembling drug rolls or drug columns: connecting multiple drug rolls or drug columns in sequence;

[0023] Step 4: The first medium-long hole charge backstop, the charge roll or charge column and the second medium-long hole charge backstop are sequentially sent into the blasthole until the first medium-long hole charge backstop reaches the designated position and is fixed by the positioning fan blade;

[0024] Step 5: Block the taphole mud at the bottom of the second medium-deep hole charge check valve.

[0025] The technical solution adopted to achieve the purpose of the present application is that, in the third aspect of the present application, the present invention also discloses a method for installing a medium-long hole charge backstop 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-long hole charge backstop: connect the connecting ring to the bottom of the tube body, connect the first end of the connecting rope to the suspension beam of the first medium-long hole charge backstop, install the suspension beam into the tube body, and connect the cover body to the top of the tube body;

[0027] Step 2: Assemble the second medium-long hole charge backstop: connect the connecting ring to the bottom of the tube body, connect the second end of the connecting rope to the suspension beam of the second medium-long hole charge backstop, and install the suspension beam into the tube body;

[0028] Step 3: The first medium-long hole charge backstop and the second medium-long hole charge backstop are sequentially sent into the blasthole until the first medium-long hole charge backstop and the second medium-long hole charge backstop reach the designated position, and are fixed by positioning the fan blades;

[0029] Step 4: Injecting emulsion explosive upward from the bottom of the second medium-deep hole charge backstop so that the explosive adheres to the connecting rope;

[0030] Step 5: Block the taphole mud at the bottom of the second medium-deep hole charge check valve.

[0031] In some embodiments, in step three, the second medium-long hole charge check valve is first sent to the specified position, and then the positioning fan blades are fixed to the wall of the blast hole by pulling down the rope, and then the first medium-long hole charge check valve is sent to the specified position, and then pulled down again to fix the first medium-long hole charge check valve.

[0032] It can be known from the above technical scheme that the medium-deep hole charge backstop for water-rich ore bodies in underground metal mines disclosed in the present application comprises a tube body, a positioning structure, a suspension beam and a cap body. The positioning structure comprises a connecting ring and a plurality of positioning blades, the connecting ring is detachably matched with the bottom of the tube body, the plurality of positioning blades are arranged at intervals along the circumference of the connecting ring, the end of the positioning blade away from the connecting ring is inclined outward, and the end of the positioning blade away from the connecting ring is sharp. The suspension beam is installed in the tube body. The cap body is covered on the top of the tube body.

[0033] The medium- and deep-hole charge check valve for water-rich ore bodies in underground metal mines disclosed in the present application is designed with a positioning structure. The present invention can effectively prevent the charge check valve from sliding down or shifting in the blasthole of the water-rich ore body, ensure the stable position of the charge roll, and thus improve the blasting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0035] Figure 1 A schematic diagram of a medium-long hole charge backstop for a water-rich ore body in an underground metal mine in one or more embodiments of the present application;

[0036] Figure 2 for Figure 1 Schematic cross-sectional view of a medium-deep hole charge backstop for a water-rich ore body in a medium underground metal mine;

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

[0038] Figure 4 for Figure 3 A schematic cross-sectional view of the middle tube body;

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

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

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

[0042] Figure 8A flow chart of a method for installing a medium-long hole charge backstop filled with fixed explosives in a water-rich ore body of an underground metal mine in one or more embodiments of the present application;

[0043] Fig. 9 A solid explosive installation structure diagram of a medium-deep hole charge backstop for a water-rich ore body in an underground metal mine in one or more embodiments of the present application;

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

[0045] Fig.11 A flow chart of a method for installing a medium-long hole charge backstop filled with liquid explosives in a water-rich ore body of an underground metal mine in one or more embodiments of the present application;

[0046] Fig.12 A diagram of the installation structure of liquid explosives for a medium- and long-hole charge backstop for a water-rich ore body in an underground metal mine in one or more embodiments of the present application;

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

[0048] Description of reference numerals:

[0049] 1000-first medium and long hole charge check valve, 2000-second medium and long hole charge check valve, 100-tube body, 110-clamping groove, 111-first groove, 112-second groove, 120-elastic member, 200-positioning structure, 210-connecting ring, 220-positioning fan blade, 300-suspended beam, 310-first limiting groove, 320-second limiting groove, 400-cap body, 500-connecting rope, 3000-medicine roll or medicine column, 4000-emulsion explosive. DETAILED DESCRIPTION

[0050] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0051] In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific examples of processes and materials, but those of ordinary skill in the art may recognize the application of other processes and / or the use of other materials.

[0052] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0053] At present, it is difficult to fill the upward medium-deep hole with explosives. The current effective method to prevent the explosives from falling cannot be reliable, convenient to operate, and cost-effective. In general, there are three methods, namely, fixing with simple supporting tools, pulling with ropes or hanging, and using sticky materials to attach the explosives.

[0054] The reliability of this method is low. For some blastholes with inclined angles or complex geological conditions, the simple support tool may not be able to fully adapt to the shape and internal environment of the blasthole, and cannot effectively fix the explosive package. It is only suitable for supporting solid explosive packages and cannot provide good support for emulsion explosives. At the same time, the installation and adjustment of the simple support tool often requires a lot of time and effort, especially in complex construction environments such as underground. The transportation and placement of the tool are relatively troublesome, which seriously affects the charging efficiency.

[0055] There are certain problems with the reliability of rope lifting or hanging. The rope may be damaged due to friction with the blasthole wall during use, especially when the blasthole wall is not smooth or there are sharp rocks protruding, the risk of rope breakage increases. In addition, when lifting or hanging the explosive package, the explosive package is easy to shake on the rope, which may cause the explosive package to collide with the blasthole wall and then break away from the rope, causing it to fall. For emulsion explosives, there was no good fixer to keep the rope in a properly tensioned state.

[0056] The reliability of adding sticky materials to explosives is limited. The stickiness of the sticky material may be affected in a high temperature, high humidity or chemically contaminated blasthole environment, causing the charge to separate from the sticky material and fall off. Moreover, for heavier charges, the sticky material may not provide enough adhesion to keep the charge in place in the blasthole for a long time. When the target is emulsion explosives, its composition may also affect the performance of the explosives, resulting in poor blasting efficiency. At the same time, the sticky material itself may be expensive, especially some specially formulated sticky materials. And if a certain reliability needs to be guaranteed, more sticky material may need to be used, which will further increase costs.

[0057] The present invention aims to optimize the shortcomings of the above method. An embodiment of the present invention discloses a medium-deep hole charging check valve for a water-rich ore body in an underground metal mine, which can solve the technical problem of explosive slipping during charging of medium-deep holes, thereby improving charging efficiency and blasting effect.

[0058] The technical solution of the present application is described in detail below through specific embodiments:

[0059] See also Figure 1 , Figure 2 , Figure 5 and Figure 6 In the first aspect of the present application, a medium-long hole charge check valve for a water-rich ore body in an underground metal mine is provided, which includes a pipe body 100, a positioning structure 200, a suspension beam 300 and a cap body 400. The positioning structure 200 includes a connecting ring 210 and a plurality of positioning blades 220. The connecting ring 210 and the pipe body 100 can be detachably matched by means of threaded connection, snap connection, etc., and the plurality of positioning blades 220 are arranged at intervals along the circumference of the connecting ring 210. The end of the positioning blade 220 away from the connecting ring 210 is inclined outward, and the end of the positioning blade 220 away from the connecting ring 210 is sharp. The suspension beam 300 is installed in the pipe body 100. The cap body 400 is covered on the top of the pipe body 100, and the cap body 400 and the pipe body 100 can be detachably matched by means of threaded connection, snap connection, etc.

[0060] The tube body 100 is used as the main structure of the charge check valve and is used to connect various structures. The connecting ring 210 is detachably matched with the bottom of the tube body 100, which is convenient for installation and removal. A plurality of positioning blades 220 are arranged at intervals along the circumference of the connecting ring 210 to form a stable support structure. The end of the positioning blade 220 away from the connecting ring 210 is tilted outward and sharp. Such a design makes it easier for the positioning blade 220 to be inserted into the wall of the blast hole and form a stable fixing effect in the blast hole, effectively preventing the charge check valve from sliding down or shifting in the blast hole. The suspension beam 300 is installed in the tube body 100. The suspension beam 300 is used to position the medicine roll and to install the connecting rope 500. In addition, the suspension beam 300 can also be used to support the medicine roll to prevent the medicine roll 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 medicine roll in the tube body 100. The cap body 400 is in a semi-ellipsoidal shape, which can maximize the use of the charge space while maintaining its stability; at the same time, its own strength can also serve as a plug for the blast hole to improve the blasting effect.

[0061] The medium- and deep-hole charge check valve for water-rich ore bodies in underground metal mines disclosed in this embodiment is designed with a positioning structure 200. The present invention can effectively prevent the charge check valve from sliding down or shifting in the blasthole of the water-rich ore body, ensure the stable position of the charge roll, and thus improve the blasting effect.

[0062] See also Figure 1 , Figure 3 and Figure 4 In one embodiment, a clamping groove 110 is provided on the tube body 100 , one end of the clamping groove 110 extends to the top of the tube body 100 , and the end of the suspension beam 300 is clamped in the clamping groove 110 .

[0063] The design of the clamping groove 110 not only simplifies the installation process of the suspension beam 300, but also improves the stability of the suspension beam 300 in the pipe body 100 to prevent it from slipping or moving. The shape and size of the clamping groove 110 can be adjusted according to actual needs to adapt to suspension beams 300 of different specifications and types, thereby improving the adaptability and flexibility of the backstop.

[0064] In one embodiment, the clamping groove 110 includes a first groove 111 and a second groove 112. The first groove 111 is arranged along the height direction of the tube body 100, and the first end of the first groove 111 extends to the top end surface of the tube body 100. This design enables the suspension beam 300 to slide along the height direction of the first groove 111, which facilitates inserting the suspension beam 300 into a proper position when assembling the backstop.

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

[0066] The suspension beam 300 is slidably matched with the first groove 111, and the suspension beam 300 is snap-fitted with the second groove 112. The suspension beam 300 is slidably matched with the first groove 111, and this design enables the suspension beam 300 to slide easily in the first groove 111, and facilitates the adjustment of the position of the suspension beam 300. The suspension beam 300 is snap-fitted with the second groove 112, and this design ensures that the suspension beam 300 can be firmly fixed in the tube body 100 after being snapped into the second groove 112, preventing it from slipping or moving.

[0067] The design of the first groove 111 and the second groove 112 enables the suspension beam 300 to be firmly fixed in the pipe body 100, and can remain in place even when the explosive explodes, thereby preventing displacement or damage caused by the impact force of the explosion, which further enhances the overall stability and safety of the backstop.

[0068] In one embodiment, an elastic member 120 is disposed on the tube body 100, and the elastic member 120 is installed at the second end of the first groove 111. When the elastic member 120 is naturally stretched, 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 squeezes the elastic member 120 and enters the second groove 112, and then the elastic member 120 recovers and limits the end of the suspension beam 300 in the second groove 112.

[0069] When the suspension beam 300 moves along the first groove 111 toward the second groove 112, its end portion will press the elastic member 120. Since the elastic member 120 has a certain elasticity and restoring force, when the pressure applied by the suspension beam 300 is large enough, the elastic member 120 will be compressed and temporarily give way, allowing the suspension beam 300 to enter the second groove 112. Once the suspension beam 300 completely enters the second groove 112, the elastic member 120 will quickly restore its original shape and tightly confine the end portion of the suspension beam 300 in the second groove 112, thereby ensuring a stable connection between the suspension beam 300 and the tube body 100.

[0070] The design of the elastic member 120 makes the installation process of the suspension beam 300 more convenient. The operator only needs to slide the suspension beam 300 along the first groove 111 and slightly squeeze the elastic member 120 to easily insert the suspension beam 300 into the second groove 112. This greatly reduces the difficulty and time cost of installation. The restoring force of the elastic member 120 ensures that once the suspension beam 300 is inserted into the second groove 112, it will be subjected to a continuous tightening force, thereby avoiding loosening or falling off due to vibration or external force.

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

[0072] The first limiting groove 310 is provided at the end of the suspension beam 300, and its shape and size match the second groove 112. It is important that the first limiting groove 310 is provided toward the bottom of the tube body 100, and when the suspension beam 300 slides along the first groove 111 and is inserted into the second groove 112, the first limiting groove 310 will form a tight fit with the second groove 112, thereby limiting the up and down movement of the suspension beam 300 in the tube body 100. The design of the first limiting groove 310 makes it easier for the suspension beam 300 to align with the second groove 112 during installation, thereby reducing the difficulty and error of installation.

[0073] In one embodiment, there are four clamping grooves 110, which are evenly arranged along the circumference of the tube body 100. The suspension beam 300 is arranged in a cross shape, and the four ends of the suspension beam 300 are arranged in one-to-one correspondence with the four clamping grooves 110 respectively.

[0074] There are four snap-in grooves 110, and these four snap-in grooves 110 are evenly distributed along the circumference of the tube body 100. This design not only improves the fixing stability of the check valve in the tube body 100, but also enables the suspension beam 300 to distribute the force more evenly, reducing the risk of damage caused by excessive force on a single point. The suspension beam 300 is set in a cross shape, and its four ends are respectively set in a one-to-one correspondence with the four snap-in grooves 110. This design not only enables the suspension beam 300 to cooperate with the four snap-in grooves 110 at the same time, improving the stability of the connection, but also enables the suspension beam 300 to better distribute the force in the tube body 100, enhancing the overall stability of the check valve.

[0075] In one embodiment, four positioning blades 220 are provided, and the four positioning blades 220 are evenly arranged along the circumference of the connecting ring 210. Four positioning blades 220 can be well engaged and fixed with the side wall of the blasthole. Of course, in other embodiments, it is also possible to set the positioning blades 220 to three, five or even more.

[0076] See also Fig.13 In one embodiment, the medium- and long-hole charge check device for the water-rich ore body of an underground metal mine 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 its mechanical properties and stability can be maintained in extreme environments (such as the humid, high temperature and corrosive environment in underground metal mines). Common materials include high-strength synthetic fibers (such as nylon, polyester) or metal chains or hemp ropes.

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

[0079] In one embodiment, a second limiting groove 320 is provided on the suspension beam 300 , the second limiting groove 320 is arranged toward 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 slide on the suspension beam 300, and ensures that the connecting rope 500 can be firmly fixed on the suspension beam 300 when connected, while avoiding the adverse effects of the internal environment of the tube body 100 (such as moisture, corrosion, etc.) on the connecting rope 500. The connecting rope 500 is connected to the second limiting groove 320 by a specific connection method (such as buckle, knot, winding, etc.). This connection method needs to ensure that the connecting rope 500 will not fall off from the limiting groove when subjected to tension, and also needs to facilitate the operator to easily separate the connecting rope 500 from the limiting groove when needed.

[0081] Through the above embodiments, the present application has the following beneficial effects or advantages: The unique design of the positioning structure 200 of the medium-deep hole charge check valve for water-rich ore bodies in underground metal mines disclosed in the present application is the key to realizing the check valve function. It is composed of a connecting ring 210 with four positioning blades 220 around it, and the diameter of the positioning blades 220 after unfolding is larger than the inner diameter of the blast hole. When there is a downward trend, it can be automatically inserted into the hole wall by means of extrusion and friction with the hole wall, effectively preventing the medicine roll, powder column or emulsion explosive 4000 from sliding down or sinking, ensuring that the check valve can be stably used under various working conditions. Whether it is a medium-deep blast hole vertically upward or obliquely upward, it can adapt to and brake reliably. The whole adopts PPR plastic, which not only has good properties such as heat resistance and corrosion resistance, meets the use requirements of harsh environments such as underground mines, but also has a relatively low cost. The cross bolt, the key internal material, is made of ordinary carbon steel with high cost performance, which reduces costs while ensuring performance. The various components are assembled through simple plugging, nesting or tying, without the need for complicated assembly tools and techniques. Assembly can be completed quickly at the construction site, thus improving the efficiency of charging operations.

[0082] The medium-deep hole charge check device for water-rich ore bodies in underground metal mines disclosed in the present application can provide sufficient support and friction for the solid drug roll or drug column 3000, and prevent it from sliding down in the blast hole. For the emulsion explosive 4000, on the one hand, the clamping effect of the positioning fan blade 220 is used to prevent the whole from sinking, and on the other hand, the adhesion characteristics of the hemp rope and the matrix of the emulsion explosive 4000 are used to make the emulsion explosive 4000 adhere to the hemp rope, solving the problem of sliding down caused by the smooth wall of the blast hole and the influence of gravity. It realizes the dual effective application in the filling of solid and liquid explosives.

[0083] See also Figure 8 , Fig. 9 and Fig.10 Based on the same inventive concept, the second embodiment of the present application discloses a method for installing a medium-long hole charge backstop in a water-rich ore body of an underground metal mine disclosed in any embodiment of the first aspect, which comprises the following steps:

[0084] Step 1: Assemble the first medium-long hole charge backstop 1000: connect the connecting ring 210 to the bottom of the pipe body 100, install the suspension beam 300 into the pipe body 100, and connect the cover body to the top of the pipe body 100;

[0085] Step 2: Assemble the second medium-long hole charge backstop 2000: connect the connecting ring 210 to the bottom of the pipe body 100, and install the suspension beam 300 into the pipe body 100;

[0086] Step 3: Filling the taphole mud: Filling the taphole mud into the first medium-long hole charge backstop 1000, then installing a medicine roll or a medicine column 3000 to the bottom of the first medium-long hole charge backstop 1000, and installing another medicine roll or a medicine column 3000 to the top of the second medium-long hole charge backstop 2000;

[0087] Step 4: Assembling the medicine roll or medicine column 3000: connecting multiple medicine rolls or medicine columns 3000 in sequence;

[0088] Step 5: Sending into the blast hole: Sending the first medium-long hole charge backstop 1000, the medicine roll or the medicine column 3000 and the second medium-long hole charge backstop 2000 into the blast hole in sequence until the first medium-long hole charge backstop 1000 reaches the designated position and is fixed by the positioning blade 220;

[0089] Step six: plug the taphole mud at the bottom of the second medium-deep hole charge check valve 2000.

[0090] The installation method of the medium-deep hole charge backstop for the water-rich ore body of an underground metal mine disclosed in the present application is capable of providing sufficient support and friction force for the solid charge roll or charge column 3000, thereby preventing it from slipping in the blast hole.

[0091] See also Fig.11 , Fig.12 and Fig.13 Based on the same inventive concept, the third aspect of the present application discloses a method for installing a medium-long hole charge backstop in a water-rich ore body of an underground metal mine disclosed in any of the first aspects of the present application, which comprises the following steps:

[0092] Step 1: Assemble the first medium-long hole charge backstop 1000: connect the connecting ring 210 to the bottom of the pipe body 100, connect the first end of the connecting rope 500 to the suspension beam 300 of the first medium-long hole charge backstop 1000, install the suspension beam 300 into the pipe body 100, and connect the cover body to the top of the pipe body 100;

[0093] Step 2: Assemble the second medium-long hole charge backstop 2000: connect the connecting ring 210 to the bottom of the pipe body 100, connect the second end of the connecting rope 500 to the suspension beam 300 of the second medium-long hole charge backstop 2000, and install the suspension beam 300 into the pipe body 100;

[0094] Step 3: Sending into the blasthole: Sending the first medium-long hole charge backstop 1000 and the second medium-long hole charge backstop 2000 into the blasthole in sequence until the first medium-long hole charge backstop 1000 and the second medium-long hole charge backstop 2000 reach the designated position, and fixing them by positioning the fan blade 220;

[0095] Step 4: Filling the emulsion explosive 4000: Injecting the emulsion explosive 4000 upward from the bottom of the second medium-deep hole charge backstop 2000 so that the explosive adheres to the connecting rope 500;

[0096] Step 5: Block the taphole mud at the lower part of the second medium-deep hole charge check valve 2000.

[0097] The installation method of the medium- and deep-hole charging check valve for the water-rich ore body of an underground metal mine disclosed in the present application is aimed at the emulsion explosive 4000. On the one hand, the clamping effect of the positioning fan blade 220 is used to prevent the overall sinking. On the other hand, the adhesion characteristics of the hemp rope and the matrix of the emulsion explosive 4000 are used to enable the emulsion explosive 4000 to adhere to the hemp rope, thereby solving the problem of sliding down caused by the smooth wall of the blast hole and the influence of gravity.

[0098] In one embodiment, in step three, the second medium-long hole charge check valve 2000 is first sent to the specified position, and then the positioning fan blade 220 is fixed to the wall of the blast hole by pulling down the rope, and then the first medium-long hole charge check valve 1000 is sent to the specified position, and then pulled down again to fix the first medium-long hole charge check valve 1000.

[0099] By first fixing the second medium-long hole charge backstop 2000 and then fixing the first medium-long hole charge backstop 1000, the accurate positioning of the backstop in the blasthole is ensured. The operation of pulling down the rope is simple and easy, which reduces the labor intensity and skill requirements of the operator. At the same time, the optimization of this step also makes the entire installation process smoother and more efficient.

[0100] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described above in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0101] Therefore, the above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0102] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0103] In the description of the present invention, it is necessary to understand 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 the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0104] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0105] In the present invention, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0106] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0107] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A medium-long hole charge backstop for water-rich ore bodies in underground metal mines, characterized in that: include: tube body; A positioning structure, comprising a connecting ring and a plurality of positioning blades, wherein the connecting ring is detachably matched with the bottom of the tube body, the plurality of positioning blades are arranged at intervals along the circumference of the connecting ring, the end of the positioning blade away from the connecting ring is inclined outward, and the end of the positioning blade away from the connecting ring is sharp; A suspension beam is installed in the tube body; as well as The cap body is connected to the top of the tube body.

2. The medium-long hole charge backstop for water-rich ore bodies in underground metal mines according to claim 1, characterized in that: The tube body is provided with a clamping groove, one end of which extends to the top of the tube body, and the end of the suspension beam is clamped in the clamping groove.

3. The medium-long hole charge backstop for water-rich ore bodies in underground metal mines according to claim 2, characterized in that: The clamping groove includes a first groove and a second groove, wherein 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 surface of the tube body, and the second groove is arranged along the circumference of the tube body, and the second groove is connected to the second end of the first groove; The suspension beam is slidably matched with the first groove, and the suspension beam is snap-fitted with the second groove.

4. The medium-long hole charge backstop for water-rich ore bodies in underground metal mines according to claim 3, characterized in that: An elastic member is provided on the tube body, and the elastic member is installed at the second end of the first groove. When the elastic member is naturally stretched, the second groove is blocked; When the suspension beam moves along the first groove toward the second groove, the suspension beam squeezes the elastic member and then enters the second groove, and then the elastic member recovers and restricts the end of the suspension beam in the second groove.

5. The medium-long hole charge backstop for water-rich ore bodies in underground metal mines according to claim 3, characterized in that: The suspension beam is provided with a first limiting groove, the first limiting groove is provided 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 provided toward the bottom of the tube body.

6. The medium-long hole charge backstop for water-rich ore bodies in underground metal mines according to any one of claims 1 to 5, characterized in that: It also includes a connecting rope, which is connected to the suspension beam.

7. The medium-long hole charge backstop for water-rich ore bodies in underground metal mines according to claim 6, characterized in that: The suspension beam is provided with a second limiting groove, the second limiting groove is arranged toward the top of the tube body, and the connecting rope is connected to the second limiting groove.

8. A method for installing a medium-long hole charge backstop for a water-rich ore body in an underground metal mine according to any one of claims 1 to 7, characterized in that: The steps include: Step 1: Assemble the first medium-deep hole charge backstop: connect the connecting ring to the bottom of the tube body, install the suspension beam into the tube body, and connect the cover body to the top of the tube body; Step 2: Assemble the second medium-deep hole charge backstop: connect the connecting ring to the bottom of the tube body, and install the suspension beam into the tube body; Step 3: Fill the first medium-deep hole charge backstop with taphole mud, then install a medicine roll or a medicine column to the bottom of the first medium-deep hole charge backstop, and install another medicine roll or a medicine column to the top of the second medium-deep hole charge backstop; Step 3: Assembling drug rolls or drug columns: connecting multiple drug rolls or drug columns in sequence; Step 4: The first medium-long hole charge backstop, the charge roll or charge column and the second medium-long hole charge backstop are sequentially sent into the blasthole until the first medium-long hole charge backstop reaches the designated position and is fixed by the positioning fan blade; Step 5: Block the taphole mud at the bottom of the second medium-deep hole charge check valve.

9. A method for installing a medium-long hole charge backstop for a water-rich ore body in an underground metal mine according to any one of claims 1 to 7, characterized in that: The steps include: Step 1: Assemble the first medium-long hole charge backstop: connect the connecting ring to the bottom of the tube body, connect the first end of the connecting rope to the suspension beam of the first medium-long hole charge backstop, install the suspension beam into the tube body, and connect the cover body to the top of the tube body; Step 2: Assemble the second medium-long hole charge backstop: connect the connecting ring to the bottom of the tube body, connect the second end of the connecting rope to the suspension beam of the second medium-long hole charge backstop, and install the suspension beam into the tube body; Step 3: The first medium-long hole charge backstop and the second medium-long hole charge backstop are sequentially sent into the blasthole until the first medium-long hole charge backstop and the second medium-long hole charge backstop reach the designated position, and are fixed by positioning the fan blades; Step 4: Injecting emulsion explosive upward from the bottom of the second medium-deep hole charge backstop so that the explosive adheres to the connecting rope; Step 5: Block the taphole mud at the bottom of the second medium-deep hole charge check valve.

10. The medium-long hole charge backstop for water-rich ore bodies in underground metal mines according to claim 9, characterized in that: In step three, the second medium-long hole charge check valve is first sent to the specified position, and then the positioning fan blades are fixed to the wall of the blast hole by pulling down the rope. Then, the first medium-long hole charge check valve is sent to the specified position, and then pulled down again to fix the first medium-long hole charge check valve.

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