Recyclable overflow groove pouring mold and using method

Abstract

The invention discloses a recyclable overflow groove pouring mold and a using method. According to the pouring mold spliced and assembled by nine quadrangular frustum pyramid splicing long blocks, after a lower layered stope is exposed, under the influence of gravity, a third splicing long block falls, a third connecting cloth bag drives a second longitudinal splicing long block to fall, and the second splicing long block drives an axial second splicing long block to fall through a second connecting cloth bag; and the axial splicing long block II pulls the connecting cloth bag I to drive the splicing long block to fall, so that the pouring mold falls to a lower layered stope and is recycled. The method has the advantages of simplicity in operation, high efficiency, low cost and recyclability, and has a good application prospect.

Description

Technical Field

[0001] The present invention belongs to the technical field of mine exploitation and filling. It relates to a downward drift artificial overflow trough and its using method. Background Art

[0002] The artificial filling body false roof can provide a safe, controllable and stable roof for the mining operation of the lower slice drift. However, the existing downward drift tailings filling construction has the disadvantages of insufficient roof contact during filling, single construction position of the overflow trough, slow construction progress, high cost and poor flexibility.

[0003] The Chinese patent application with the publication number CN116241318A discloses "a downward drift tailings roof contact filling construction method using an artificial overflow trough", which has an artificial overflow trough. The artificial overflow trough is filled with crushed ore in woven bags, and then a suitable cube is built on the bottom plate at a suitable position with the woven bags, and the outside is tightly wrapped with plastic film to solidify the inside to form the artificial overflow trough. By constructing the artificial overflow trough, the flatness of the filling surface can be improved, and the compressive strength of the filling surface can be increased. After the lower slice stope is exposed, a filling depression is formed on the roof, which is convenient for hanging the filling pipeline during the filling of the lower slice, ensuring the roof contact of the downward filling stope. The main disadvantages of this artificial overflow trough are as follows: First, the woven bags filled with crushed ore have a high density and large weight, resulting in high construction cost and slow progress of the artificial overflow trough, and after the lower slice stope is mined, the crushed ore filled in the woven bags is likely to fall, causing potential safety hazards; Second, the reusable value of the woven bags filled with crushed ore as the tool for constructing this artificial overflow trough is very low, mainly because there are sharp corner areas in the crushed ore, which are easy to scratch and damage the woven bags during their falling and handling processes.

[0004] Therefore, there is an urgent need to develop an efficient and recyclable overflow trough casting mold. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a recyclable overflow trough casting mold and its using method, which have the characteristics of low construction cost, fast speed, strong flexibility and recyclable mold.

[0006] A recyclable overflow chute casting mold, comprising a combined mold and a partition film covering the top and sides of the combined mold. The combined mold includes four splicing long blocks one, four splicing long blocks two, and one splicing long block three. The splicing long blocks one are distributed at the four corner positions of the combined mold. The splicing long blocks two are distributed at the four side positions of the combined mold. The splicing long block three is located at the center position of the combined mold. The nine splicing long blocks are of the same height, and after combination, they form a cuboid shape with a flat side. The top of the splicing long block three is respectively connected to the bottoms of the front and rear splicing long blocks two through two connecting cloth bags three. The tops of the front and rear splicing long blocks two are respectively connected to the bottoms of the left and right splicing long blocks two through one connecting cloth bag two. The tops of the left and right splicing long blocks two are respectively connected to the bottoms of the four splicing long blocks one through two connecting cloth bags one. Grooves are respectively formed on the outer sides of the splicing long blocks one and the splicing long blocks two. The grooves are horizontally wound around by elastic cloth belts. The casting mold further includes a support net erected around and above the partition film. The root of the support net is used to connect to the steel mesh on the ore chamber floor. There is a 20 - 30 cm gap between the support net and the partition film.

[0007] Preferably, the splicing long blocks are all frustum - of - pyramid structures. The four longitudinal sections of the splicing long block one are right - angled trapezoids. Two of the longitudinal sections of the splicing long block two are right - angled trapezoids, and the other two are isosceles trapezoids. The splicing long block three is a regular frustum - of - pyramid structure.

[0008] Preferably, the upper end face sizes of the splicing long block three and the splicing long block two are both smaller than the lower end face sizes. Preferably, the upper end face size of the splicing long block one is larger than the lower end face size.

[0009] Preferably, the splicing long block three is a solid structure, and the other eight splicing long blocks are all hollow structures; or all nine splicing long blocks are hollow structures, and a pull - ring is connected to the bottom side of the splicing long block three through a rope.

[0010] Preferably, the connection methods between the connecting cloth bags and the splicing long blocks include the following two types: The first method: The end of the connecting cloth bag is directly connected to the splicing long block. The second method: The connecting cloth bag includes a connecting belt, and also includes an upper and a lower rotating shaft for winding the connecting belt. The two ends of the rotating shaft are respectively rotatably connected with a bushing, and the bushing is connected to the corresponding position of the splicing long block.

[0011] A method for using a recyclable overflow chute casting mold includes the following steps: a. Erect a steel mesh with a horizontal direction on the ore chamber floor and 25 cm higher than the drift floor; b. Assembled combined mold: Invert the four splicing long blocks and place them at the four corner positions preset on the bottom plate. Insert the two axial splicing long blocks II into the corresponding axial spaces. The connecting belt rotates adaptively around the rotating shaft so that the splicing long block I fits with the connecting cloth bag I and the two axial splicing long blocks II. Similarly, insert the two longitudinal splicing long blocks II into the corresponding longitudinal spaces. Finally, insert the splicing long block III into the central vacancy, ensuring that the splicing long blocks fit tightly together. Finally, wind the elastic cloth bag around the groove on the splicing long blocks to fix the various splicing long blocks together, completing the assembly operation of the combined mold. Then, turn the combined mold as a whole and place it at the preset position on the stope bottom plate; c. Cover the combined mold with a partition film to prevent the filling body from contacting the combined mold; d. Erect a support net around and above the partition film. The root of the support net is connected to the steel bar net, and there is a 20 - 30 cm gap between the support net and the partition film; d. After laying the filling pipeline, carry out stope filling, and the filling body wraps the combined mold until the stope is full; e. After the lower - level stope is exposed, the bottom side of the combined mold is exposed on the roof. The splicing long block III sags under the influence of gravity or sags by pulling the pull - ring downward. The splicing long block III drives the longitudinal splicing long block II to sag through the connecting cloth bag III, the longitudinal splicing long block II drives the axial splicing long block II to sag through the connecting cloth bag II, and the axial splicing long block II drives the splicing long block I to sag through the connecting cloth bag I. Thus, the combined mold drops to the lower - level stope; f. Recover the combined mold.

[0012] The present invention has the following beneficial effects:

[0013] First, the combined mold of the present invention is composed of three groups of splicing long blocks with a hollow structure combined through three groups of connecting cloth bags and an elastic cloth bag, and has the advantages of simple and flexible assembly operation. The splicing long block II and the splicing long block III are provided with a structure that is narrower at the top and wider at the bottom. After the lower - level stope is exposed and the roof exposes the casting mold, they sag in sequence under the influence of gravity, making it easier to recycle and utilize the casting mold.

[0014] Second, during the construction of the present invention, there is a support net that covers the combined mold inside and is connected to the steel bar net of the access bottom plate at the lower side, and there is a 20 - 30 cm interval between the support net and the combined mold. After the filling operation is completed and the lower - level ore body is exposed, the support net is located inside the filling body, plays a supporting role for the overflow trough, and effectively improves the strength of the filling body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the assembled state of the combined mold embodiment of the present invention.

[0016] Figure 2It is a schematic structural diagram of the falling state of the combined mold embodiment of the present invention.

[0017] Figure 3 It is a schematic structural diagram of one of the connection methods between the connecting cloth bag and the splicing long block in the combined mold embodiment of the present invention.

[0018] Figure 4 It is a schematic structural diagram of the combined mold after adding a partition film and a support net in the embodiment of the present invention.

[0019] In the figure: 1. Combined mold, 11. First splicing long block, 12. Second splicing long block, 13. Third splicing long block, 131. Pull ring, 14. First connecting cloth bag, 15. Second connecting cloth bag, 16. Third connecting cloth bag, 17. Groove, 18. Elastic cloth bag, 191. Bush, 192. Rotating rod, 193. Connecting belt, 2. Partition film, 3. Support net. Detailed implementation mode

[0020] The present invention will be further described below in conjunction with the embodiments and the drawings.

[0021] The embodiment of the recyclable overflow groove casting mold of the present invention includes a combined mold 1. The combined mold 1 includes four first splicing long blocks 11, four second splicing long blocks 12, one third splicing long block 13, four first connecting cloth bags 14, two second connecting cloth bags 15 and one third connecting cloth bag 16. The combined mold 1 further includes an elastic cloth belt 18.

[0022] All nine splicing long blocks are frustum of a pyramid structures. The four longitudinal sections of the first splicing long block 11 are right trapezoids and are distributed at the four corner positions of the combined mold 1. Two of the longitudinal sections of the second splicing long block 12 are right trapezoids and the other two are isosceles trapezoids. The second splicing long blocks 12 are distributed at the four side positions of the combined mold 1. The third splicing long block 13 is a regular frustum of a pyramid structure and is located at the center position of the combined mold 1. The nine splicing long blocks have the same height, and after combination, they are in the shape of a cuboid with flat sides, as Figure 1 .

[0023] Further, the upper end face sizes of the third splicing long block 13 and the second splicing long block 12 are both smaller than the lower end face sizes to facilitate falling downward. The upper end face size of the first splicing long block 11 is larger than the lower end face size.

[0024] Further, among the nine splicing long blocks, the third splicing long block 13 is a solid structure, and the other eight splicing long blocks are all hollow structures. Or, all nine splicing long blocks are hollow structures, and a pull ring 131 is connected to the bottom side of the third splicing long block 13 through a rope.

[0025] Such as Figure 2, the top of the spliced long block three 13 is connected to the bottoms of the front and rear spliced long blocks two 12 respectively through two connecting cloth bags three 16. The tops of the front and rear spliced long blocks two 12 are respectively connected to the bottoms of the left and right spliced long blocks two 12 correspondingly through a connecting cloth bag two 15. The tops of the left and right spliced long blocks two 12 are respectively connected to the bottoms of the four spliced long blocks one 11 correspondingly through two connecting cloth bags one 14.

[0026] Specifically, the connection methods between the connecting cloth bag and the spliced long block include the following two types: The first type: The ends of the connecting cloth bag and the spliced long block are bonded to each other. The second type: The connecting cloth bag one 14, the connecting cloth bag two 15 and the connecting cloth bag three 16 have the same structure. As Figure 3 , the connecting cloth bag includes a connecting belt 193, and also includes an upper and a lower rotating shaft 192 for winding the connecting belt 193. Both ends of the rotating shaft 192 are rotatably connected with a shaft sleeve 191. Wherein the shaft sleeve 191 is connected to the corresponding position of the spliced long block.

[0027] Combined with Figure 1 and Figure 2 , grooves 17 with a depth of 3 - 4 mm and a height of 40 cm are respectively opened on the outer sides of the spliced long block one 11 and the spliced long block two 12. An elastic cloth belt 18 with a height of 39 cm and a thickness of 4 - 5 mm is tightly wound around the grooves 17 transversely to bundle and fix the nine spliced long blocks together.

[0028] As Figure 4 , the embodiment of the recyclable overflow trough casting mold of the present invention further includes an interlayer film 2 and a support net 3. Wherein the interlayer film 2 covers the top and side of the combined mold 1 to prevent the filling slurry from directly contacting the combined mold 1. The support net 3 is erected around and above the interlayer film 2, and the root of the support net 3 is used to connect the steel mesh on the ore chamber floor.

[0029] Furthermore, there is a gap of 20 - 30 cm between the support net 3 and the interlayer film 2. The purpose of setting this gap is to further improve the strength of the filling body. If there is no gap between the support net 3 and the interlayer film 2, after the filling operation is completed and the lower ore body is exposed, the support net 3 will be on the lower surface of the filling body, and the strength improvement of the filling body by the support net skeleton will be significantly weakened.

[0030] The usage method of the recyclable overflow trough casting mold of the present invention is exemplified as follows.

[0031] First, perform the horizontal leveling treatment on the ore chamber floor, and erect a steel mesh on the ore chamber floor with a horizontal orientation and 25 cm higher than the drift floor.

[0032] Place the four splicing long blocks 11 upside down on the four corners preset on the bottom plate, insert the two axial splicing long blocks 2 12 into the corresponding axial spaces, and the connecting belt 193 rotates adaptively around the rotating shaft 192, so that the splicing long block 11 fits with the connecting cloth bag 1 14 and the two axial splicing long blocks 2 12, and then insert the two longitudinal splicing long blocks 2 12 into the corresponding longitudinal spaces, and finally insert the splicing long block 3 13 into the central vacancy to ensure that the splicing long blocks fit tightly. Finally, wrap the elastic cloth bag 18 around the groove 17 on the splicing long block, fix the various splicing long blocks together, and complete the assembly operation of the combined mold 1.

[0033] The combined mold 1 is turned over as a whole and placed at a preset position on the floor of the mine room, and then the interlayer film 2 is used to cover the combined mold 1 to prevent the filling slurry from contacting the combined mold 1. Then, a support net 3 is set up around and above the interlayer film 2, and the root of the support net 3 is connected to the steel mesh, and a gap of 20 to 30 cm is left between the support net 3 and the interlayer film 2. Figure 4 .

[0034] After the remaining auxiliary operations (mainly the laying of filling pipelines) are completed, the stope is filled, and the filling body wraps the combined mold 1 until the stope is full. After the lower layer stope is exposed, the combined mold 1 is exposed from the top plate.

[0035] If the splicing long block 3 13 is solid, it falls by its own weight. If it is hollow, the pull ring 131 is pulled downward to make the splicing long block 3 13 fall. The splicing long block 3 13 drives the longitudinal splicing long block 2 12 to fall through the connecting bag 3 16. Then, the splicing long block 2 12 drives the axial splicing long block 2 12 to fall through the connecting bag 2 15. Further, the axial splicing long block 2 12 pulls the connecting bag 1 14 to drive the splicing long block 1 11 to fall, so that the combined mold 1 falls to the lower layer stope and is recovered.

Claims

1. A recyclable overflow trough casting mold, comprising a combined mold (1) and a barrier film (2) covering the top and sides of the combined mold (1), characterized in that: The combined mold (1) comprises four spliced ​​long blocks (11), four spliced ​​long blocks (12) and one spliced ​​long block (13); the spliced ​​long blocks (11) are distributed at the four corners of the combined mold (1); the spliced ​​long blocks (12) are distributed at the four sides of the combined mold (1); the spliced ​​long block (13) is located at the center of the combined mold (1); the nine spliced ​​long blocks have the same height and are assembled into a rectangular parallelepiped with flat sides; the top of the spliced ​​long block (13) is connected to the bottoms of the two front and rear spliced ​​long blocks (12) respectively through two connecting cloth bags (16); the front and rear two spliced ​​long blocks (12) are connected to the bottoms of the two front and rear spliced ​​long blocks (12) respectively. The top of each of the two spliced ​​long blocks (12) is connected to the bottom of the two spliced ​​long blocks (12) on the left and right through a connecting cloth bag (15); the top of each of the two spliced ​​long blocks (12) on the left and right is connected to the bottom of the four spliced ​​long blocks (11) through two connecting cloth bags (14); the outer side surfaces of the spliced ​​long blocks (11) and the spliced ​​long blocks (12) are respectively provided with grooves (17); the grooves (17) are laterally surrounded by elastic cloth belts (18); the casting mold also includes a support net (3) erected on the periphery and top of the interlayer film (2); the support The root of the net (3) is used to connect the steel mesh on the floor of the mine room; there is a gap of 20 to 30 cm between the supporting net (3) and the barrier membrane (2).

2. The recyclable overflow trough casting mold according to claim 1, characterized in that: The spliced ​​long blocks are all of a tetrahedral structure; the four longitudinal sections of spliced ​​long block one (11) are right-angled trapezoids; two longitudinal sections of spliced ​​long block two (12) are right-angled trapezoids, and the other two are isosceles trapezoids; spliced ​​long block three (13) is of a regular tetrahedral structure.

3. The recyclable overflow trough casting mold according to claim 1, characterized in that: The upper end faces of the spliced ​​long block three (13) and the spliced ​​long block two (12) are smaller than the lower end faces; the upper end face of the spliced ​​long block one (11) is larger than the lower end face.

4. The recyclable overflow trough casting mold according to claim 1, characterized in that: The spliced ​​long block three (13) is a solid structure, and the other eight spliced ​​long blocks are all hollow structures; or the nine spliced ​​long blocks are all hollow structures, and the bottom side of the spliced ​​long block three (13) is connected to a pull ring (131) through a rope.

5. The recyclable overflow trough casting mold according to claim 1, characterized in that: The connection modes between the connecting cloth bag and the splicing long block include the following two modes: the first mode: the end of the connecting cloth bag is directly connected to the splicing long block; the second mode: the connecting cloth bag includes a connecting belt (193), and also includes an upper and a lower rotating shaft (192) for winding the connecting belt (193), and the two ends of the rotating shaft (192) are respectively rotatably connected to shaft sleeves (191), wherein the shaft sleeves (191) are connected to corresponding positions of the splicing long block.

6. A method for using a recyclable overflow tank casting mold, characterized in that The following steps are involved: a. A layer of horizontal steel mesh is set up on the floor of the mine room and 25cm higher than the floor of the access road; b. Assembling the combined mold (1): Place the four splicing long blocks (11) upside down at the four preset corner positions on the bottom plate, insert the two axial splicing long blocks (12) into the corresponding axial spaces, and adaptively rotate the connecting belt (193) around the rotating shaft (192) so that the splicing long block (11) fits with the connecting cloth bag (14) and the two axial splicing long blocks (12). Similarly, insert the two longitudinal splicing long blocks (12) into the corresponding longitudinal spaces, and finally insert the splicing long block (13) into the central gap to ensure that the splicing long blocks fit tightly. Finally, wrap the elastic cloth bag (18) around the groove (17) on the splicing long block to fix the splicing long blocks together, and complete the assembly of the combined mold (1). Then, turn the combined mold (1) over as a whole and place it at the preset position on the bottom plate of the mine room; c. Covering the interlayer film (2) on the assembled mold (1) to prevent the filling body from contacting the assembled mold (1); d. A support mesh (3) is set up around and above the interlayer membrane (2), the root of the support mesh (3) is connected to the steel mesh, and a gap of 20 to 30 cm is provided between the support mesh (3) and the interlayer membrane (2); d. After laying the filling pipeline, the stope is filled, and the filling body wraps the combined mold (1) until the stope is filled; e. After the lower layer stope is exposed, the top plate exposes the bottom side of the combined mold (1), and the spliced ​​long block three (13) falls due to the influence of gravity or the spliced ​​long block three (13) falls by pulling the pull ring (131) downward, and the spliced ​​long block three (13) drives the longitudinal spliced ​​long block two (12) to fall through the connection bag three (16), and the spliced ​​long block two (12) drives the axial spliced ​​long block two (12) to fall through the connection bag two (15), and the axial spliced ​​long block two (12) drives the spliced ​​long block one (11) to fall through the connection bag one (14), thereby the combined mold (1) falls to the lower layer stope; f. Recycle the assembled mold (1).

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