Draw shaft plugging structure and construction method of plugging structure

Abstract

The invention discloses a draw shaft plugging structure and a construction method of the plugging structure, and relates to the technical field of mining, the draw shaft plugging structure has an axial direction, a radial direction and a circumferential direction, the draw shaft plugging structure comprises a plugging layer, at least one structure reinforcing part, a bottom sealing layer and a filling layer, and the draw shaft plugging structure is further provided with drainage holes. The structure reinforcing part is arranged around the plugging layer in the circumferential direction and protrudes out of the plugging layer in the radial direction, and the structure reinforcing part and the plugging layer are integrally formed; the bottom sealing layer is arranged at one end of the plugging layer in the axial direction; the filling layer is arranged at the end, away from the bottom sealing layer in the axial direction, of the plugging layer, a plurality of water seepage gaps are formed in the filling layer, and any two adjacent water seepage gaps communicate with each other; and the drainage hole is communicated with any one water seepage gap. The draw shaft plugging structure has high structural strength.

Description

Technical Field

[0001] The invention relates to the technical field of mining, and in particular to a chute plugging structure and a construction method of the plugging structure. Background Art

[0002] As a key ore transportation channel in a mine, the chute plays a vital role in improving mine production efficiency and reducing transportation costs. However, when the chute is in a water-rich state, a series of serious problems such as water inrush, blockage and well collapse may occur. Therefore, it is necessary to effectively block specific areas of the chute. Traditional methods usually use pouring concrete for blocking, aiming to form a solid blocking body inside the chute. However, under water-rich conditions, the muddy substance formed by the mixture of accumulated water in the chute and other materials will cause the blocking body to be subjected to significantly increased pressure, which may cause the chute wall or the blocking body structure to lose stability, and then trigger a well collapse disaster similar to a debris flow impact, posing a major threat to mine safety. Summary of the invention

[0003] In view of this, the purpose of the present application is to overcome the deficiencies in the prior art and to provide a chute plugging structure having high structural strength.

[0004] The present application also provides a construction method of a blocking structure.

[0005] To achieve the above objectives, the technical solutions adopted in this application are as follows: In the first aspect, the present application provides a chute sealing structure having an axial direction, a radial direction and a circumferential direction, the chute sealing structure comprising: a sealing layer; at least one structural reinforcement portion, the structural reinforcement portion being arranged around the sealing layer along the circumferential direction and protruding from the sealing layer along the radial direction, the structural reinforcement portion being integrally formed with the sealing layer; a sealing layer portion being arranged at one end of the sealing layer along the axial direction; a filling layer being arranged at one end of the sealing layer away from the sealing layer along the axial direction, a plurality of water seepage gaps being arranged in the filling layer, any two adjacent water seepage gaps being connected; the chute sealing structure is also provided with a drainage hole, and the drainage hole is connected with any one of the water seepage gaps.

[0006] In an optional embodiment, the structural reinforcement portion has a first support wall and a second support wall, the first support wall and the second support wall are spaced apart along the axial direction, the first support wall and the second support wall are arranged at an angle, and in the axial direction, the distance between the first support wall and the second support wall gradually decreases along the radial direction toward a direction away from the sealing layer.

[0007] In an optional embodiment, an angle between the first supporting wall and the second supporting wall is α, which satisfies: 60°≤α≤90°.

[0008] In an optional embodiment, the chute plugging structure is provided with blast holes, the blast holes are spaced apart from the plugging layer, the blast holes are provided with at least one blasting position, and each of the blasting positions is located at one of the structural reinforcement parts.

[0009] In an optional embodiment, there are a plurality of blast holes, and the plurality of blast holes are arranged in the sealing layer at intervals along the circumferential direction.

[0010] In an optional embodiment, the central axis of each of the blast holes is arranged parallel to the axial direction.

[0011] In an optional embodiment, the central axis of the drainage hole is set at an angle to the axial direction, and the distance between the drainage hole and the sealing layer gradually increases along the axial direction toward away from the filling layer, and the distance between the drainage hole and the sealing layer layer gradually increases along the axial direction toward away from the filling layer.

[0012] In an optional implementation, the sealing layer is made of reinforced concrete material.

[0013] In a second aspect, the present application provides a construction method of a plugging structure, which is applied to the chute plugging structure as described in any one of the aforementioned embodiments, and the construction method of the plugging structure comprises: The sealing layer, the plugging layer and the filling layer are sequentially filled into the chute, so that the structural reinforcement part is arranged between the plugging layer and the wall of the chute, and the structural reinforcement part and the plugging layer are integrally formed; A drainage hole is opened in the surrounding rock of the chute from the sealing layer toward the filling layer, and the drainage hole is connected to any seepage gap in the filling layer.

[0014] In an optional embodiment, the construction method of the blocking structure further includes: A blast hole is opened in the surrounding rock of the chute along the axial direction from the sealing layer toward the filling layer, and the blasting position of the blast hole is located at the structural reinforcement part; The plurality of blasting positions located at the same structural reinforcement portion are blasted simultaneously.

[0015] The chute plugging structure of the present application has the following advantages: In the well plugging structure of the present application, the sealing layer is used to be arranged at the bottom of the sealing layer to form a solid base at the bottom of the sealing layer, which is convenient for stabilizing the sealing layer, thereby improving the structural strength of the sealing layer. The filling layer is used to be arranged on the top of the sealing layer. Since a plurality of water seepage gaps are provided in the filling layer, any two adjacent water seepage gaps are connected, and the drainage hole is connected to any one of the water seepage gaps. Therefore, when water enters the well plugging structure, the water can be introduced into the filling layer through the water seepage gaps and discharged through the drainage hole to realize the drainage of the well plugging structure, thereby realizing the effective drainage of the accumulated water that may be generated in the well plugging structure, and preventing water from flowing out of the filling layer. The bottom of the layer penetrates into the sealing layer, reducing the water accumulation in the chute sealing structure and improving the structural strength of the chute sealing structure. Furthermore, since the structural reinforcement part is arranged around the sealing layer in the circumferential direction and protrudes from the sealing layer in the radial direction, the bearing capacity of the sealing layer can be improved by the structural reinforcement part, thereby improving the structural strength of the sealing layer, thereby improving the pressure resistance of the chute sealing structure, so that the chute sealing structure can effectively resist high water pressure and has strong structural stability. At the same time, since the structural reinforcement part and the sealing layer are integrally formed, the structural reinforcement part and the sealing layer can form an integral structure, so as to further improve the structural strength of the sealing layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The schematic diagram of the chute plugging structure and the chute structure in the present application is shown; Figure 2 A schematic diagram of the structure of the chute plugging structure in the present application is shown; Figure 3 The schematic diagram of the structure of the chute and the blasting assembly in the present application is shown; Figure 4 Shows Figure 3 A schematic diagram of the enlarged structure at A in the middle; Figure 5 The schematic diagram of the structure of the blasthole and the blasting assembly in the present application is shown; Figure 6 A schematic diagram of the radial cross-sectional structure of the chute in the present application is shown; Figure 7 A schematic flow chart of the construction method of the plugging structure in the present application is shown.

[0018] Description of main component symbols: 10- Well blocking structure; 100-sealing layer; 200-structural reinforcement portion; 210-first supporting wall; 220-second supporting wall; 300- bottom layer; 400-filling layer; 410-water seepage gap; 500-scupper hole; 600-gun holes; 20- chute; 21- surrounding rock; 22- supporting space; 30-blasting assembly; 31-blasting part; 32-limiting part; 33-detonating part; x-axial direction; y-radial direction; z-circumferential direction. DETAILED DESCRIPTION

[0019] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0020] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] In this application, 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 this application can be understood according to specific circumstances.

[0023] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or 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 may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0024] Reference Figure 1 , Figure 2 as well as Figure 3 As shown, the chute sealing structure 10 involved in the embodiment of the present application has an axial direction x, a radial direction y and a circumferential direction z. The chute sealing structure 10 includes: a sealing layer 100, at least one structural reinforcement part 200, a sealing layer 300 and a filling layer 400. The chute sealing structure 10 is also provided with a drainage hole 500.

[0025] Specifically, the structural reinforcement part 200 is arranged around the sealing layer 100 along the circumferential direction z and protrudes from the sealing layer 100 along the radial direction y. The structural reinforcement part 200 is integrally formed with the sealing layer 100; the sealing layer 300 is arranged at one end of the sealing layer 100 along the axial direction x; the filling layer 400 is arranged at one end of the sealing layer 100 along the axial direction x away from the sealing layer 300, and a plurality of water seepage gaps 410 are provided in the filling layer 400, and any two adjacent water seepage gaps 410 are connected; the drainage hole 500 is connected to any water seepage gap 410.

[0026] It should be noted that the axial direction x is Figure 1 The direction indicated by x is the radial direction y. Figure 1 The direction indicated by y is the circumferential direction z. Figure 6 The direction indicated by z.

[0027] In the well plugging structure 10 of the present application, the sealing layer 300 is used to be arranged at the bottom of the plugging layer 100 to form a solid base at the bottom of the plugging layer 100, so as to stabilize the plugging layer 100, thereby improving the structural strength of the plugging layer 100, and the filling layer 400 is used to be arranged on the top of the plugging layer 100. Since a plurality of seepage gaps 410 are provided in the filling layer 400, any two adjacent seepage gaps 410 are connected, and the drainage hole 500 is connected with any one of the seepage gaps 410, therefore, when water enters the well plugging structure 10, the water can be introduced into the filling layer 400 through the seepage gaps 410, and discharged through the drainage holes 500, so as to realize the drainage of the well plugging structure 10, thereby realizing the effective drainage of the accumulated water that may be generated in the well plugging structure 10, and preventing water from The bottom of the filling layer 400 penetrates into the sealing layer 100, reducing the water accumulation in the well sealing structure 10 and improving the structural strength of the well sealing structure 10. Furthermore, since the structural reinforcement part 200 is arranged around the sealing layer 100 along the circumferential direction z and protrudes from the sealing layer 100 along the radial direction y, the structural reinforcement part 200 can be used to improve the bearing capacity of the sealing layer 100, thereby improving the structural strength of the sealing layer 100, thereby improving the pressure resistance of the well sealing structure 10, so that the well sealing structure 10 can effectively resist high water pressure and have strong structural stability. At the same time, since the structural reinforcement part 200 and the sealing layer 100 are integrally formed, the structural reinforcement part 200 and the sealing layer 100 can form an integral structure to further improve the structural strength of the sealing layer 100.

[0028] Specifically, in this embodiment, the sealing layer 100 and the structural reinforcement part 200 are both made of reinforced concrete materials. The sealing layer 100 and the structural reinforcement part 200 are integrally formed by pouring concrete in the chute 20, so that the sealing layer 100 and the structural reinforcement part 200 form an integral structure. At the same time, when pouring concrete, steel bars are inserted into the concrete to enhance the structural strength of the sealing layer 100.

[0029] Specifically, in this embodiment, the sealing layer 300 includes concrete and a steel structural mesh. The overall structure of the sealing layer 300 is formed by pouring concrete in the chute 20, thereby forming the base of the blocking layer 100 and enhancing the structural strength of the blocking layer 100. At the same time, when pouring concrete, a steel structural mesh is inserted into the concrete to enhance the structural strength of the sealing layer 300. The steel bars of the steel structural mesh are effectively overlapped by welding and the ends should be embedded in the wall of the chute 20.

[0030] Specifically, in this embodiment, the filling layer 400 includes graded crushed stone or waste rock with larger particle sizes, so as to form a plurality of water seepage gaps 410 between the graded crushed stone or waste rock with larger particle sizes, thereby ensuring that the filling layer 400 has good water conductivity, facilitating water to enter the drainage hole 500, avoiding water accumulation in the chute sealing structure 10, and improving the hydrophobicity of the chute sealing structure 10.

[0031] Specifically, in this embodiment, there are a plurality of structure reinforcement parts 200 , and the plurality of structure reinforcement parts 200 are arranged at intervals along the axial direction to enhance the support effect on the blocking layer 100 .

[0032] Reference Figure 1 as well as Figure 3 As shown, along the radial direction y, the width of the structure reinforcement portion 200 gradually decreases in a direction away from the blocking layer 100 .

[0033] In this embodiment, along the radial direction y, since the width of the structural reinforcement part 200 gradually decreases in the direction away from the blocking layer 100, a table-shaped or cone-shaped structural reinforcement part 200 can be formed to enhance the axial bearing capacity of the blocking layer 100. At the same time, the shear stress on the structural reinforcement part 200 is reduced, thereby improving the structural stability of the blocking layer 100.

[0034] Reference Figure 4 As shown, the structural reinforcement part 200 has a first support wall 210 and a second support wall 220. The first support wall 210 and the second support wall 220 are spaced apart along the axial direction x. The first support wall 210 and the second support wall 220 are arranged at an angle. In the axial direction x, the distance between the first support wall 210 and the second support wall 220 gradually decreases along the radial direction y toward the direction away from the blocking layer 100.

[0035] In this embodiment, since the first support wall 210 and the second support wall 220 are spaced apart along the axial direction x, and the first support wall 210 and the second support wall 220 are arranged at an angle, the first support wall 210 and the second support wall 220 can support the structural reinforcement part 200 to improve the bearing capacity of the blocking layer 100. In the axial direction x, since the distance between the first support wall 210 and the second support wall 220 gradually decreases along the radial direction y toward the direction away from the blocking layer 100, the structural reinforcement part 200 can be in the shape of a table or a cone to enhance the bearing capacity of the blocking layer 100 along the axial direction x, reduce the shear stress on the structural reinforcement part 200, and improve the structural stability of the blocking layer 100.

[0036] Reference Figure 4 As shown, the angle between the first support wall 210 and the second support wall 220 is α, which satisfies: 60°≤α≤90°.

[0037] Specifically, in this embodiment, α can be 60°, 70°, 80°, 90°, etc.

[0038] In this embodiment, if the angle α between the first support wall 210 and the second support wall 220 satisfies: α<60°, the angle between the first support wall 210 and the second support wall 220 will be too small. In this way, the shear stress on the first support wall 210 and the second support wall 220 will be too large, which will affect the structural strength of the structural reinforcement part 200. If the angle α between the first support wall 210 and the second support wall 220 satisfies: α>90°, the angle between the first support wall 210 and the second support wall 220 will be too large. In this way, the supporting force of the first support wall 210 and the second support wall 220 on the blocking layer 100 will be reduced, thereby reducing the bearing capacity of the blocking layer 100. When the angle α between the first support wall 210 and the second support wall 220 satisfies: 60°≤α≤90°, it can not only improve the bearing capacity of the blocking layer 100, but also reduce the shear stress on the structural reinforcement part 200, thereby improving the structural stability of the blocking layer 100.

[0039] Reference Figure 2 , Figure 4 as well as Figure 5 As shown, the chute plugging structure 10 is provided with a blast hole 600 , which is spaced apart from the plugging layer 100 , and the blast hole 600 is provided with at least one blasting position, each of which is located at a structural reinforcement portion 200 .

[0040] In this embodiment, since each blasting position is located at a structural reinforcement part 200, it is possible to form a support space 22 for accommodating the structural reinforcement part 200 by blasting the surrounding rock 21 of the chute 20 located at the structural reinforcement part 200, thereby providing support force for the sealing layer 100 through the friction between the first support wall 210 and the second support wall 220 of the structural reinforcement part 200 and the cavity wall of the support space 22, thereby improving the structural strength of the sealing layer 100.

[0041] Reference Figure 6 As shown, there are a plurality of blast holes 600 , and the plurality of blast holes 600 are arranged in the sealing layer 100 at intervals along the circumferential direction.

[0042] In this embodiment, since a plurality of blast holes 600 are arranged at circumferential intervals in the sealing layer 100, the surrounding rock 21 of the chute 20 can be blasted simultaneously through the plurality of blast holes 600, so that the support space 22 after blasting is arranged in the sealing layer 100 along the circumferential direction z, so as to improve the uniformity of support for the sealing layer 100 in the circumferential direction z and improve the structural stability of the sealing layer 100.

[0043] Reference Figure 3 As shown, the central axis of each blast hole 600 is arranged parallel to the axial direction x, so as to ensure the structural consistency of the blasted support space 22, so that each structural reinforcement part 200 can be arranged in a support space 22.

[0044] Reference Figure 2 As shown, in some embodiments, the extension direction of the drainage hole 500 is set at an angle to the axial direction x, and the distance between the drainage hole 500 and the sealing layer 100 gradually increases along the axial direction x toward the direction away from the filling layer 400, and the distance between the drainage hole 500 and the sealing layer 300 gradually increases along the axial direction x toward the direction away from the filling layer 400, so that the drainage hole 500 can be spaced apart from the sealing layer 100 and the sealing layer 300, thereby avoiding interference between the drainage hole 500 and the sealing layer 100 and the sealing layer 300, reducing the impact on the sealing layer 100, and at the same time ensuring that the water entering the drainage hole 500 can be smoothly discharged from the end of the drainage hole 500 away from the filling layer 400, thereby realizing drainage of the chute 20.

[0045] Specifically, in other embodiments, the drainage hole 500 is extended in the axial direction and penetrates the sealing layer 300 and the blocking layer 100 so that water entering the drainage hole 500 can be discharged vertically to improve the drainage effect of the drainage hole 500.

[0046] Specifically, in this embodiment, there are a plurality of drainage holes 500 , and the plurality of drainage holes 500 are arranged in the sealing layer 100 and the sealing layer 300 at intervals along the circumferential direction z to improve the drainage uniformity of the accumulated water in the chute sealing structure 10 .

[0047] Reference Figure 7 As shown, the construction method of the plugging structure involved in the embodiment of the present application is applied to the above-mentioned chute plugging structure 10, and the construction method of the plugging structure includes: The sealing layer 300, the plugging layer 100 and the filling layer 400 are sequentially filled into the chute 20, so that the structural reinforcement part 200 is arranged between the plugging layer 100 and the wall of the chute 20, and the structural reinforcement part 200 and the plugging layer 100 are integrally formed; A drainage hole 500 is opened in the surrounding rock 21 of the chute 20 from the sealing layer 300 toward the filling layer 400, and the drainage hole 500 is connected to any seepage gap 410 in the filling layer 400.

[0048] In the construction method of the plugging structure of the present application, the plugging layer 100 is arranged in the chute 20, so as to improve the structural stability of the chute 20 through the plugging layer 100, and reduce the possibility of problems such as water inrush, blockage and well collapse in the chute 20. Further, when the plugging layer 100 is arranged, the sealing layer 300 is arranged at the bottom of the plugging layer 100, so as to form a solid base at the bottom of the plugging layer 100 through the sealing layer 300, and the filling layer 400 is arranged on the top of the plugging layer 100, so as to form a solid sealing layer on the top of the plugging layer 100 through the filling layer 400, thereby improving the sealing layer 100. Structural strength. Further, by connecting the drainage hole 500 with any seepage gap 410 in the filling layer 400, the drainage effect of the chute plugging structure 10 is improved, and the structural strength of the plugging layer 100 is improved. Further, the friction between the plugging layer 100 and the wall of the chute 20 is improved by the structural reinforcement part 200, and the bearing capacity of the plugging layer 100 is improved, thereby improving the pressure resistance of the chute plugging structure 10. In this way, the construction method of the plugging structure of the present application can improve the structural stability of the chute plugging structure 10 and reduce the possibility of problems such as water inrush, blockage and well collapse in the chute 20.

[0049] Reference Figure 1 , Figure 4 as well as Figure 7 As shown, the construction method of the plugging structure includes: S100: A blast hole 600 is opened in the surrounding rock 21 of the chute 20 along the axial direction x from the bottom sealing layer 300 toward the filling layer 400, and the blasting position of the blast hole 600 is located at the structural reinforcement part 200; Specifically, in S100 , a plurality of blast holes 600 are opened in the plugged well section along the circumferential direction z, and the blast holes 600 are cleaned.

[0050] S200: placing the blasting assembly 30 in the blast hole 600, so that each blasting component 31 is located at a blasting position, and detonating the multiple blasting components 31; Specifically, in S200 , a plurality of explosive components 31 are detonated to form an explosion space, and the explosion space is the support space 22 .

[0051] Specifically, in S200, multiple explosive components 31 in the same blasthole 600 may be detonated simultaneously or at different times, but the explosive components 31 located at the same circumferential position need to be detonated simultaneously to reduce the interference of secondary blasting, and at the same time, the blasting direction is precisely controlled so that the support space 22 after blasting is surrounded by the blocking layer 100 along the circumferential direction z, so as to improve the uniformity of support for the blocking layer 100 in the circumferential direction z and improve the structural stability of the blocking layer 100.

[0052] Specifically, in S200, a limiting member 32 is further provided between any two adjacent blasting members 31, so that the blasting members 31 are fixed by the limiting member 32, so that each blasting member 31 is located at a blasting position, and each blasting member 31 is connected to a detonating member 33, so that the blasting member 31 is detonated by the detonating member 33. At the same time, each blasting member 31 is connected to a blasting control member, so that the blasting process of the blasting member 31 can be accurately controlled by the blasting control member, so that the formed support space 22 is in the shape of a table or a cone.

[0053] Specifically, in S200, the blasting component 31 is a rock emulsion explosive, which has the advantages of high energy density, good stability and safety, good controllability, etc., and can achieve an efficient and safe blasting process; the blasting control component is a digital electronic detonator. A digital electronic detonator is a device for accurately controlling the explosion process, which can set the detonation time and sequence through a precise electronic control system to achieve very high precision, which allows the blasting process to be more accurately controlled, reduces unnecessary damage, and improves the blasting effect.

[0054] S300: placing the sealing layer 300 in the chute 20, and making the sealing layer 300 fill the bottom of the chute 20; Specifically, in S300, before setting the sealing layer 300, the chute 20 and the supporting space 22 after blasting are cleaned. At the same time, after the sealing layer 300 fills the bottom of the chute 20, sufficient time is reserved for curing the sealing layer 300 to ensure the structural stability of the sealing layer 300.

[0055] S400: placing the blocking layer 100 in the chute 20 and placing the blocking layer 100 on top of the sealing layer 300, while filling the support space 22 with the structural reinforcement part 200, and forming the structural reinforcement part 200 and the blocking layer 100 as one piece; Specifically, in S400 , after the blocking layer 100 is disposed in the chute 20 and the structural reinforcement part 200 is filled in the support space 22 , sufficient time is reserved for curing the blocking layer 100 and the structural reinforcement part 200 to ensure the structural stability of the blocking layer 100 .

[0056] S500: placing a filling layer 400 in the chute 20 and placing the filling layer 400 on top of the plugging layer 100; Specifically, in S500, graded crushed stone or waste rock with larger particle size is used as the filling layer 400 to ensure that the filling layer 400 has good water conductivity, which facilitates water to enter the drainage hole 500, avoids water accumulation in the chute 20, and improves the hydrophobicity of the chute 20.

[0057] S600: a drainage hole 500 is opened from the bottom sealing layer 300 toward the filling layer 400, and the drainage hole 500 is connected to any water seepage gap 410 in the filling layer 400; Specifically, in S600 , a drain pipe is inserted into the drain hole 500 to achieve effective drainage.

[0058] Specifically, in the present embodiment, the drainage hole 500 and the blast hole 600 are both opened at the bottom of the surrounding rock 21 of the chute 20 from the sealing layer 300 toward the filling layer 400. Thus, in the construction method of the plugging structure of the present application, the construction processes involved, such as hole making, reinforced concrete pouring, and gravel filling, do not require operators to enter the main body of the chute 20 for on-site construction. Thus, while ensuring the effectiveness of the chute 20 plugging structure 10, the safety of personnel and equipment during the plugging operation of the chute 20 is maximized, and the on-site feasibility of the chute 20 plugging technology is increased.

[0059] Specifically, in one embodiment of the chute plugging structure 10, the diameter of the chute 20 is 3.0m; the axial height of the sealing layer 300 is 1.0m, the cast concrete model is C20, and the diameter of the steel bars of the steel structure mesh laid inside is 6.5mm; the axial height of the plugging layer 100 is 10.0m, the cast concrete model is C20, and the length of the steel bars or steel strands inserted in the concrete should be greater than 1.5m; the diameter of the blasthole 600 is 65.0mm, and the spacing between any two adjacent blastholes 600 in the circumferential direction z is 1.0m, and the spacing between each blasthole 600 and the wall of the chute 20 in the radial direction y is 0.6m; two blasting holes are arranged in each blasthole 600. The blasting piece 31 arranged near the filling layer 400 has a diameter of 50.0 mm, the diameter of the blasting piece 31 arranged near the sealing layer 300 is 20.0 mm, the axial spacing between the two blasting pieces 31 is 3.0 m, and the axial distance between the blasting piece 31 arranged near the sealing layer 300 and one end of the sealing layer 300 away from the blocking layer 100 along the axial direction x is 3.0 m; the angle between the first supporting wall 210 and the second supporting wall 220 is 90°; the diameter of the drainage hole 500 is 110.0 mm, and the angle between the drainage hole 500 and the wall of the main body of the chute 20 is 60°; the particle size of the gravel in the filling layer is 50 mm~400 mm to meet the water conductivity requirements of the filling layer.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0061] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A chute plugging structure, characterized in that: Having an axial direction, a radial direction and a circumferential direction, the chute plugging structure comprises: Sealing layer; At least one structural reinforcement part, the structural reinforcement part is arranged around the blocking layer along the circumferential direction and protrudes from the blocking layer along the radial direction, and the structural reinforcement part is integrally formed with the blocking layer; A sealing layer, arranged at one end of the sealing layer along the axial direction; A filling layer is arranged at one end of the blocking layer away from the sealing layer in the axial direction, wherein a plurality of water seepage gaps are arranged in the filling layer, and any two adjacent water seepage gaps are connected; The chute plugging structure is also provided with a drainage hole, and the drainage hole is connected to any one of the water seepage gaps.

2. The chute plugging structure according to claim 1, characterized in that: The structural reinforcement portion has a first support wall and a second support wall, the first support wall and the second support wall are spaced apart along the axial direction, the first support wall and the second support wall are arranged at an angle, and in the axial direction, the distance between the first support wall and the second support wall gradually decreases along the radial direction toward a direction away from the sealing layer.

3. The chute plugging structure according to claim 2, characterized in that: An angle between the first supporting wall and the second supporting wall is α, which satisfies: 60°≤α≤90°.

4. The chute plugging structure according to claim 1, characterized in that: The chute plugging structure is provided with blast holes, the blast holes are spaced apart from the plugging layer, the blast holes are provided with at least one blasting position, and each of the blasting positions is located at one of the structural reinforcement parts.

5. The chute plugging structure according to claim 4, characterized in that: There are a plurality of blast holes, and the plurality of blast holes are arranged in the sealing layer at intervals along the circumferential direction.

6. The chute plugging structure according to claim 5, characterized in that: The central axis of each blast hole is arranged parallel to the axial direction.

7. The chute plugging structure according to claim 1, characterized in that: The central axis of the drainage hole is set at an angle to the axial direction, and the distance between the drainage hole and the blocking layer gradually increases along the axial direction toward a direction away from the filling layer, and the distance between the drainage hole and the sealing layer gradually increases along the axial direction toward a direction away from the filling layer; Or the central axis of the drainage hole is extended along the axial direction, and the drainage hole passes through the sealing layer and the blocking layer.

8. The chute plugging structure according to claim 1, characterized in that: The sealing layer is made of reinforced concrete material.

9. A construction method for a plugging structure, characterized in that: Applied to the chute plugging structure according to any one of claims 1 to 8, the construction method of the plugging structure comprises: The sealing layer, the plugging layer and the filling layer are sequentially filled into the chute, so that the structural reinforcement part is arranged between the plugging layer and the wall of the chute, and the structural reinforcement part and the plugging layer are integrally formed; A drainage hole is opened in the surrounding rock of the chute from the sealing layer toward the filling layer, and the drainage hole is connected to any seepage gap in the filling layer.

10. The construction method of the blocking structure according to claim 9, characterized in that: The construction method of the blocking structure also includes: A plurality of blast holes are opened in the surrounding rock of the chute along the axial direction from the sealing layer toward the filling layer, and the blasting position of each blast hole is located at a structural reinforcement part; The plurality of blasting positions located at the same structural reinforcement portion are blasted simultaneously.

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