Rapidly recyclable semispherical grouting mold and using method thereof

Abstract

The invention discloses a rapid and recyclable semispherical grouting mold and a using method of the rapid and recyclable semispherical grouting mold. The mold comprises a mold body and an interlayer film covering the outer surface of the mold body, and the mold body is hemispherical. The supporting net is arranged on the outer side of the interlayer film, and a gap of 20-30 cm is formed between the supporting net and the interlayer film. The outer convex connecting edge of the first quartered ball component and the inner concave connecting edge of the second quartered ball component are spliced in an embedded mode, then the fixing cover is installed on the upper sides of the two quartered ball components which are in embedded butt joint, and the first quartered ball component, the second quartered ball component and the fixing cover are mutually fixed to form the semi-spherical shell-shaped grouting mold body. The method has the outstanding characteristics of low cost, simple preparation procedure and rapidness; in addition, due to the fact that the mold body is hemispherical, mold materials consumed in unit volume are fewer, and the preparation cost is further reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of mine filling, and relates to a filling overflow tank mold, in particular to an artificial overflow tank mold for downward drift tailings filling construction, and also relates to a using method of the mold. Background Art

[0002] In the commonly used downward drift tailings filling construction method, there is a problem that it is difficult to fully fill the roof. The Chinese patent application with the publication number of CN116241318A discloses "a downward drift tailings roof contact filling construction method using an artificial overflow tank", and an artificial overflow tank is constructed in the method. The artificial overflow tank is filled with crushed ore in woven bags, and then a suitable cube is built on the bottom plate at a suitable position using the woven bags, and the outside is tightly wrapped with plastic film to solidify the inside to form an artificial overflow tank. By constructing the artificial overflow tank, the flatness of the filling surface can be improved, and the compressive strength of the filling surface can be increased. After the lower layer 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 layer, ensuring the filling contact of the downward filling stope. The main disadvantages of this artificial overflow tank are as follows: First, the woven bags filled with crushed ore have a high density and a large weight, resulting in high construction costs and slow progress of the artificial overflow tank, and after the lower layer stope is mined, the crushed ore filled in the woven bags is likely to fall, causing potential safety hazards; Second, the shape of the artificial overflow tank is a cube, with the disadvantage of poor stability; Third, the reusable value of the woven bags filled with crushed ore as the mold for this artificial overflow tank is very low, mainly because the crushed ore has a sharp corner area, which is easy to scratch and damage the woven bags during its falling and handling. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a quickly recyclable hemispherical grouting mold and a using method thereof. First, it has the characteristics of low construction cost, high speed, and recyclable mold body; Second, by improving the shape of the mold body, it is more material-saving, further reducing the preparation cost.

[0004] The technical solution of the present invention is as follows: A quickly recyclable hemispherical grouting mold, which includes a mold body and a separation film covering the outer surface of the mold body. The mold body is a hemispherical grouting mold body; the quickly recyclable hemispherical grouting mold further includes a support net arranged outside the separation film; the support net is arranged on the periphery and above the separation film, and the root of the support net is used to connect the steel mesh on the bottom plate of the ore chamber; there is a gap of 20 - 30 cm between the support net and the separation film.

[0005] Preferably, the hemispherical grouting mold body includes a quarter-sphere component one, a quarter-sphere component two, and a fixing cover; the outer convex connecting edge on the side of the quarter-sphere component one is inserted into the inner concave connecting edge on the side of the quarter-sphere component two, and then the fixing cover is covered on the upper side of the quarter-sphere component to form a hemispherical shell shape.

[0006] Preferably, the curved surface shape of the inner wall of the fixing cover is adapted to the outer wall curved surface of the quarter-sphere components connected together.

[0007] Preferably, the quarter-sphere component one, the quarter-sphere component two, and the fixing cover are all made of PC material.

[0008] The usage method of the quickly recyclable hemispherical grouting mold is as follows: a. Assemble the hemispherical grouting mold body: Connect the outer convex connecting edge of the quarter-sphere component one and the inner concave connecting edge of the quarter-sphere two, insert the quarter-sphere component one and the quarter-sphere component two together, and place them with the large opening downward on the floor of the ore chamber. Subsequently, install the fixing cover at the top of the two quarter-sphere components to achieve the mutual fixation of the three components; b. Cover the hemispherical grouting mold with a partition film to prevent the filling body from entering the hemispherical grouting mold body; c. Install the support grid around and above the partition film. The root of the support grid is connected to the steel mesh on the floor of the ore chamber, and there is a spacing of 20 - 30 cm between the support grid and the hemispherical grouting mold body; d. After completing the operations including the laying of the filling pipeline in this horizontal stope, conduct stope filling. The filling body wraps the hemispherical grouting mold until the stope is full; e. After the next sublevel stope is exposed, the hemispherical grouting mold body is exposed on the roof and sags under the influence of gravity; f. Recycle the hemispherical grouting mold body.

[0009] Compared with the prior art, the present invention has the following beneficial effects: First, the present invention mosaically assembles the outer convex connecting edge of the quarter-sphere component one and the inner concave connecting edge of the quarter-sphere component two, and then installs the fixing cover on the upper side of the two mosaically connected quarter-sphere components. The three are mutually fixed to form the hemispherical grouting mold body. It has the prominent characteristics of low cost, simple and fast preparation procedures; in addition, since the mold body of the present invention is hemispherical, less mold material is consumed per unit volume, further reducing the preparation cost.

[0010] Second, the artificial overflow groove mold of the present invention can be recycled and reused, reducing the total cost of the filling operation.

[0011] Thirdly, the present invention is provided with a support net, and there is a gap of 20-30 cm between the support net and the partition film. After the filling operation is completed and the lower ore body is exposed, it can be ensured that the support net is located inside the filling body, and the support net skeleton can support the artificial overflow trough and effectively improve the strength of the filling body. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic structural shape diagram of an embodiment of the hemispherical grouting mold body of the present invention.

[0013] Figure 2 It is a schematic structural shape diagram of a quarter-sphere component in an embodiment of the hemispherical grouting mold body of the present invention.

[0014] Figure 3 It is a schematic shape diagram of a fixed cover in an embodiment of the hemispherical grouting mold body of the present invention.

[0015] Figure 4 It is a schematic diagram of the use state of the hemispherical grouting mold embodiment of the present invention for the preparation of an overflow trough.

[0016] In the figure: 1. Hemispherical grouting mold body, 1-1. First quarter-sphere component, 1-11. Outer convex connecting edge, 1-2. Second quarter-sphere component, 1-21. Inner concave connecting edge, 1-3. Fixed cover, 2. Partition film, 3. Support net. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present invention will be further described below in conjunction with the detailed embodiments and the drawings.

[0018] As Figure 4 shown, an embodiment of the hemispherical grouting mold of the present invention includes a hemispherical grouting mold body 1, a partition film 2 covering the outer surface of the hemispherical grouting mold body 1, and a support net 3 disposed outside the partition film 2. The support net 3 is erected around and above the partition film 2, and the root of the support net 3 is used to connect to the steel mesh on the bottom plate of the ore chamber.

[0019] Furthermore, there is a gap of 20-30 cm between the support net 3 and the partition 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 partition 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 improvement of the strength of the filling body by the support net skeleton will be significantly weakened.

[0020] Combined with Figures 1 to 3The hemispherical grouting mold body 1 includes a four-ball component 1-1, a four-ball component 2-1-2 and a fixing cover 1-3. The outer convex edge 1-11 of the side of the four-ball component 1-1 and the inner concave edge 1-21 of the side of the four-ball component 2-1-2 are inserted into each other, and then the fixing cover 1-3 is covered on the upper side of the four-ball component to form a hemispherical shell shape.

[0021] Specifically, the junction of the four-ball component 1-1 and the four-ball component 2-1-2 is respectively provided with a corresponding outer convex edge 1-11 and inner concave edge 1-21 structure, and the outer convex edge 1-11 and the inner concave edge 1-21 are connected to each other. The inner wall curved surface shape of the fixed cover 1-3 is adapted to the outer wall curved surface of the four-ball components connected together, and the fixed cover 1-3 is installed on the top of the four-ball component 1-1 and the four-ball component 2-1-2.

[0022] In this embodiment, the inner diameter of the four-ball component 1-1 and the four-ball component 2-1-2 is 150 cm in diameter, and the material is impact-resistant and high-strength PC. The PC is polycarbonate, which is a non-crystalline thermoplastic.

[0023] An example of a method for using a fast and recyclable hemispherical grouting mold is as follows.

[0024] First, the floor of the mine room is horizontally flattened. Then, the outer convex edge 1-11 of the four-point ball component 1-1 and the inner concave edge 1-21 of the four-point ball component 2 1-2 are connected, and the four-point ball component 1-1 and the four-point ball component 2 1-2 are plugged together, and the openings thereof are placed downward on the floor of the mine room, and then the fixing cover 1-3 is installed on the top of the two four-point ball components to fix the three components to each other, thereby completing the installation of the hemispherical grouting mold body 1. Then, an interlayer film 2 is used to cover the hemispherical grouting mold body 1 to prevent the filling body from entering the hemispherical grouting mold body 1.

[0025] Then, the support net 3 is erected around and above the barrier membrane 2 , the root of the support net 3 is connected to the steel mesh on the floor of the mine room, and the support net 3 is spaced 20-30 cm from the hemispherical grouting mold body 1 .

[0026] After the remaining auxiliary operations (mainly the laying of the filling pipeline in the horizontal stope) are completed, the stope filling is carried out. The filling body wraps the hemispherical grouting mold body 1 until the stope is filled. Finally, after the lower stratified mining area is exposed, the hemispherical grouting mold body 1 is exposed on the top plate. Under the influence of gravity, the four-point ball one (1-1), the four-point ball two (1-2) and the fixed cover (1-3) fall down in sequence, thereby the casting mold (1) falls to the lower stratified mining area and is recovered.

[0027] After the lower stratified stope is exposed, a hemispherical grouting mold is exposed on the roof. Under the action of its own gravity, the quarter-sphere component one 1-1, the quarter-sphere component two 1-2 and the fixed cover 1-3 drop. Recover the hemispherical grouting mold body 1 for recycling.

Claims

1. A fast recyclable hemispherical grouting mold, which comprises a mold body and a separation film (2) covering the outer surface of the mold body, and is characterized in that: The mold body is a hemispherical grouting mold body (1); the quick-recyclable hemispherical grouting mold further includes a support net (3) disposed outside the spacer film (2); the support net (3) is erected around and above the spacer film (2), and the root of the support net (3) is used to connect to the steel mesh on the bottom plate of the ore chamber; there is a 20-30 cm gap between the support net (3) and the spacer film (2).

2. The quick-recyclable hemispherical grouting mold according to claim 1, wherein: The hemispherical grouting mold body (1) includes a quarter-sphere component one (1-1), a quarter-sphere component two (1-2), and a fixed cover (1-3); the outer convex connecting edge (1-11) on the side of the quarter-sphere component one (1-1) is inserted into the inner concave connecting edge (1-21) on the side of the quarter-sphere component two (1-2), and then the fixed cover (1-3) is covered on the upper side of the quarter-sphere components to form a hemispherical shell shape.

3. The rapid recyclable hemispherical grouting mold according to claim 1 or 2, characterized in that: The inner wall curved surface shape of the fixed cover (1-3) is adapted to the outer wall curved surface of the quarter-sphere components connected together.

4. The quickly recyclable hemispherical grouting mold according to claim 1 or 2, characterized in that: The quarter-sphere component one (1-1), the quarter-sphere component two (1-2), and the fixed cover (1-3) are all made of PC material.

5. Method for using a quickly recyclable hemispherical grouting mold, characterized in that It is used according to the following steps: a. Assemble the hemispherical grouting mold body (1): Connect the outer convex connecting edge (1-11) of the quarter-sphere component one (1-1) and the inner concave connecting edge (1-21) of the quarter-sphere two (1-2), insert the quarter-sphere component one (1-1) and the quarter-sphere component two (1-2) together, and place them with the large mouth downward on the bottom plate of the ore chamber. Subsequently, install the fixed cover (1-3) at the top of the two quarter-sphere components to achieve the mutual fixation of the three components; b. Cover the spacer film (2) on the hemispherical grouting mold (1) to prevent the filling body from entering the hemispherical grouting mold body (1); c. Erect the support net (3) around and above the spacer film (2), connect the root of the support net (3) to the steel mesh on the bottom plate of the ore chamber, and there is a 20-30 cm spacing between the support net (3) and the hemispherical grouting mold body (1); d. After completing the operations including the laying of the filling pipeline in this horizontal stope, conduct stope filling, and the filling body wraps the hemispherical grouting mold (1) until the stope is full; e. After the next sublevel stope is exposed, the hemispherical grouting mold body (1) is exposed on the roof and drops due to gravity; f. Recover the hemispherical grouting mold body (1).

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