Mould for torrent chute construction and construction method thereof

Abstract

The invention relates to the technical field of drainage engineering construction and discloses a mold for torrent gutter construction and a construction method thereof.The mold comprises an inner mold and a positioning mounting plate, the inner mold is embedded in a soil mold groove to form a torrent gutter pouring mold cavity in a matched mode and comprises an inner bottom mold base, and an acting groove used for storing sand is formed in the top side of the inner bottom mold base; an inner top die cover for sealing the acting groove is propped against a groove opening of the acting groove, and a sand guide opening communicated with the acting groove is formed in the top end of the inner bottom die holder; one ends of the multiple positioning mounting plates are distributed at the top end of the inner bottom die base and fixed through locking pieces, the ends of the multiple positioning mounting plates extend to the top end of the inner top die cover to be pressed and fixed, and the other ends of the multiple positioning mounting plates are fixed in a soil foundation on the outer side of a notch of the soil die groove through anchoring pieces. A pouring opening communicated with the torrent chute pouring mold cavity is formed between the at least two positioning mounting plates; compared with the prior art, the construction of the torrent chute can be efficiently carried out with high quality.

Description

Technical Field

[0001] This invention relates to the field of drainage engineering construction technology, specifically to a mold for constructing a rapid flow channel and its construction method. Background Technology

[0002] As an important drainage facility, chutes are widely used in slopes, culvert inlets and outlets of highways, railways, water conservancy projects, etc. Their function is to safely divert water from high places to low places or drainage systems, so as to prevent water from causing erosion damage to roadbeds or structures.

[0003] Currently, the construction methods for rapid flow channels are mainly divided into two types: prefabrication and cast-in-place. Cast-in-place rapid flow channels are more widely used due to their advantages such as good integrity and strong adaptability. Traditional cast-in-place construction methods usually adopt the following two approaches: one is to rely entirely on excavated and shaped soil formwork trenches and directly pour concrete into the trench; the other is to use steel or wooden formwork as inner and outer molds to form the pouring space.

[0004] However, the aforementioned existing technologies have obvious limitations and defects: Firstly, while using earthen formwork trenches eliminates the cost of formwork, the smoothness and evenness of the inner wall of the chutes depend entirely on the soil quality and excavation precision, making it difficult to guarantee. Rough inner walls increase water flow resistance and are easily eroded, affecting the chutes' lifespan and drainage efficiency.

[0005] Secondly, while traditional formwork support can achieve a relatively regular inner wall, it faces the following technical challenges: Template positioning is difficult and prone to floating and deformation: During concrete pouring, the enormous buoyancy generated by the liquid concrete can easily cause the inner formwork to float, shift, or deform, severely affecting the forming dimensions and shape of the chute. This usually requires complex internal and external support systems to counteract the deformation, making construction cumbersome, and the support components may remain within the concrete, creating potential hazards.

[0006] High cost and low efficiency: Both steel and wooden formwork are expensive to manufacture. The processes of setting up, reinforcing, and dismantling formwork are complex, consuming a lot of manpower and time, resulting in low construction efficiency. Summary of the Invention

[0007] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a mold for the construction of a rapid flow channel and its construction method, so as to solve the problems of low molding quality caused by the difficulty in positioning the mold and its easy floating and deformation, as well as the high cost and low efficiency in the existing technology.

[0008] To achieve the above objectives, the first aspect of the present invention adopts the following technical solution: A mold for constructing a rapid flow channel, used to be assembled in a soil mold trench to form a rapid flow channel casting cavity, comprising: The inner mold is embedded in the soil mold groove to form the rapid flow channel casting mold cavity and includes an inner bottom mold base. The top side of the inner bottom mold base has a function groove for storing sand. The opening of the function groove is abutted by an inner top mold cover that seals it. The top of the inner bottom mold base has a sand guide port that communicates with the function groove. The positioning mounting plates are multiple in number, with one end of each positioning mounting plate distributed at the top of the inner bottom mold base and fixed by locking components. This end of each positioning mounting plate extends to the top of the inner top mold cover for pressing and fixing. The other end of each positioning mounting plate is fixed to the soil base outside the soil mold trench opening using anchors. At least two positioning mounting plates form a pouring port that communicates with the pouring mold cavity of the rapid flow channel.

[0009] During assembly: the inner top mold cover is abutted against the opening of the working groove to seal it. Then, one end of each of the multiple positioning mounting plates is fixedly connected to the top of the inner bottom mold base using locking components, and the other end of each of the multiple positioning mounting plates is also pressed against the top of the inner top mold cover to limit and fix the inner top mold cover. Next, the inner bottom mold base is embedded into the excavated soil mold groove, and the other end of each of the multiple positioning mounting plates is fixed to the soil base outside the opening of the soil mold groove using anchors. At this time, the outer side of the inner bottom mold base and the inner wall of the soil mold groove form a rapid flow channel pouring mold cavity. Sand is then injected into the working groove through the sand guide port, and the sand fills the working groove. Then, concrete can be poured into the rapid flow channel pouring mold cavity through the formed pouring port. After the concrete cures, it directly integrates with the soil mold groove.

[0010] Furthermore, both the inner bottom mold base and the inner top mold cover are U-shaped, and the function groove is located on the top side of the inner bottom mold base and arranged along its design path. The distance between the two ends of the top side of the inner bottom mold base and the inner top mold cover is greater than the distance between the two ends of the bottom side.

[0011] Furthermore, multiple reinforcing frames are arranged at intervals along the length direction on the outer surface of the inner top mold cover, and each reinforcing frame is arranged in close contact with the width direction of the inner top mold cover.

[0012] Furthermore, each of the two reinforcing frames has multiple extension blocks formed on it. The extension blocks are all arranged in close contact with the outer surface of the inner top mold cover and are correspondingly abutted against the bottom of one end of multiple positioning mounting plates during assembly.

[0013] Furthermore, the cross-sectional area of ​​the working groove gradually increases from the top of the inner bottom mold base to its bottom.

[0014] Furthermore, one end of the inner bottom mold base along its length is formed with a mating slot and the other end is formed with a mating plug that mates with the corresponding mating slot.

[0015] Furthermore, the thickness of each of the positioning mounting plates gradually decreases from its central portion toward the end connected to the locking member or anchor.

[0016] The second aspect of this invention adopts the following technical solution: a method for constructing a rapid flow channel, comprising the following steps: Step S1: Excavate the soil mold trench, apply release agent to the working surface of the inner bottom mold base, and let it dry naturally; Step S2: Assemble and fix multiple molds for rapid flow channel construction as described in the first aspect of the present invention in the soil mold trench, and then inject sand into the corresponding working trench from each sand guide port and fill it. Step S3: Inject concrete into the casting cavity of the formed rapid flow channel at each pouring point; Step S4: Demolding; Step S5, Maintenance.

[0017] Furthermore, in step S2, after filling the working tank with sand, water is added into the corresponding working tank from each sand guide port, and sand is replenished as needed.

[0018] Furthermore, before performing step S4, the sand in the working tank is heated to a preset temperature and maintained for a preset time.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. Sand is injected into the working channel. At this time, the sand acts as a counterweight, which can most effectively counteract the buoyancy generated during concrete pouring. At the same time, after the working channel is filled with sand, it provides all-round support for the inner bottom formwork, perfectly preventing it from deforming inward and ensuring the smoothness and dimensional accuracy of the inner wall of the rapid flow channel.

[0020] 2. It realizes the streamlined operation of "positioning-sand injection-pouring"; the mold is lightweight when unloaded, making it very labor-saving to transport and install; after installation and fixation, sand is conveniently injected into the working groove through the sand guide port to realize the function, and the installation efficiency is relatively high.

[0021] 3. By directly utilizing the excavated soil trench as a permanent outer formwork, the material costs and installation time of all external formwork are eliminated. The concrete and soil trench become integrated, forming a robust natural structure. This is particularly suitable for large-scale, linearly distributed rapid flow channel projects in the field and mountainous areas, saving huge amounts of money.

[0022] 4. The positioning and mounting plate forms a robust "spatial frame" that connects the inner mold and the external soil base into a unified whole. Specifically, the positioning and mounting plate connects the inner bottom mold base and the external soil base, and also presses down on the inner top mold cover, ensuring a stable connection between the inner top mold cover and the inner bottom mold base through abutment contact. This spatial frame not only resists buoyancy but also resists the lateral pressure of the concrete, ensuring the mold system remains rock-solid throughout the entire pouring process, fundamentally eliminating the risk of mold displacement and bulging. The cooperation between the inner top mold cover, inner bottom mold base, and positioning and mounting plate also allows the inner top mold cover to be easily removed from the groove opening after the positioning and mounting plate is disengaged from the inner bottom mold base, facilitating the quick emptying of the sand injected into the groove.

[0023] 5. After the construction of this rapid flow channel construction mold is completed, the anchor can be released to remove the entire mold set completely. Then, the connection between the inner bottom mold base, inner top mold cover and positioning installation plate can be disassembled, and the sand can be discharged. The entire mold set can then be easily transferred to the next construction site for reuse. This reduces the cost of a single construction and is in line with the concept of green and sustainable construction. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the inner mold structure; Figure 3 for Figure 1 Schematic diagram of the inner bottom mold base Figure 1 ; Figure 4 for Figure 1 Schematic diagram of the inner bottom mold base Figure 2 ; Figure 5 for Figure 1 Schematic diagram of the structure of the inner top mold cover; Figure 6 for Figure 1 Construction diagram after assembly.

[0025] The reference numerals in the accompanying drawings include: inner mold 1, inner bottom mold base 11, function groove 111, positioning step 112, inner top mold cover 12, sand guide 13, reinforcing frame 14, extension block 141, U-shaped block 142, hanging block 143, positioning mounting plate 2, locking part 3, docking slot 4, docking insert 5, rapid flow channel casting mold cavity 6, soil base 7. Detailed Implementation

[0026] The present invention will be further described in detail below through specific embodiments: like Figures 1-5As shown in the figure, an embodiment of the present invention proposes a mold for the construction of a rapid flow channel, which is used to assemble in a soil mold trench to form a rapid flow channel casting mold cavity 6. It includes an inner mold 1 and positioning mounting plates 2. The inner mold 1 is embedded in the soil mold trench to form the rapid flow channel casting mold cavity 6 and includes an inner bottom mold base 11. The top side of the inner bottom mold base 11 has a function groove 111 for storing sand. The opening of the function groove 111 is abutted by an inner top mold cover 12 for sealing. The top of the inner bottom mold base 11 has a sand guide port 13 communicating with the function groove 111. There are multiple positioning mounting plates 2, and one end of each positioning mounting plate 2 is distributed on the top of the inner bottom mold base 11 and is fixed by locking member 3. This end of each positioning mounting plate 2 extends to the top of the inner top mold cover 12 for pressing and fixing. The other end of each positioning mounting plate 2 is fixed to the soil base 7 outside the opening of the soil mold trench by anchors. At least two positioning mounting plates 2 form a casting port communicating with the rapid flow channel casting mold cavity 6.

[0027] The molds used for the construction of this rapid flow channel are assembled as follows: The inner top mold cover 12 is sealed by abutting against the opening of the working groove 111. Then, one end of each of the multiple positioning mounting plates 2 is fixedly connected to the top of the inner bottom mold base 11 using locking elements 3, and the other end of each of the multiple positioning mounting plates 2 is also pressed against the top of the inner top mold cover 12 to limit and fix the inner top mold cover 12. Next, the inner bottom mold base 11 is embedded into the excavated soil mold groove, and the other end of each of the multiple positioning mounting plates 2 is fixed to the soil base 7 outside the opening of the soil mold groove using anchors. At this time, the outer side of the inner bottom mold base 11 and the inner wall of the soil mold groove form a rapid flow channel casting cavity 6 (e.g., Figure 6 At this point, sand is injected into the action groove 111 through the sand guide port 13. Once the action groove 111 is filled with sand, the assembly is complete.

[0028] After assembly, concrete can be poured into the mold cavity 6 of the rapid flow channel from the formed pouring port. After the concrete is cured, it will directly integrate with the soil mold channel.

[0029] In this embodiment, the locking member 3 may include a stud fixed to the top of the inner bottom mold base 11. The stud passes through the first mounting hole on the positioning mounting plate 2 and is threaded onto a nut to quickly connect the inner bottom mold base 11 to the positioning mounting plate 2. There may be two locking members 3, distributed on both sides of one end of the positioning mounting plate 2. The other end of the positioning mounting plate 2 has second mounting holes on both sides. Existing anchors are used at both second mounting holes to stably fix the positioning mounting plate 2 to the soil foundation 7.

[0030] Because the positioning mounting plate 2 will bear a large force in its middle position after assembly, in order to improve its structural strength, the thickness of each positioning mounting plate 2 gradually decreases from its middle portion towards the end connected to the locking member 3 or anchor. The positioning mounting plate 2 is thickened to improve its structural strength and meet the usage requirements.

[0031] To improve the assembly capability of the inner bottom mold base 11 and the inner top mold cover 12, such as Figures 2-5 As shown, according to another embodiment of the present invention, the mold for constructing a rapid flow channel is wherein the inner bottom mold base 11 and the inner top mold cover 12 are both U-shaped and the function groove 111 is located on the top side of the inner bottom mold base 11 and arranged along its design path, and the distance between the two ends of the top side of the inner bottom mold base 11 and the inner top mold cover 12 is greater than the distance between the two ends of the bottom side.

[0032] Here: There are two sand guide ports 13, which are opened one-to-one in the middle of the two ends of the inner bottom mold base 11. A positioning mounting plate 2 is arranged on both sides of the two ends of the inner bottom mold base 11, so that the number of positioning mounting plates 2 is four. The four positioning mounting plates 2 are distributed at the four corners of the top of the inner mold 1, and the pouring port is formed between the two positioning mounting plates 2 on the same side, so as to make reasonable arrangement; wherein, the function groove 111 is also specifically arranged in a "U" shape.

[0033] In the above description, the shape design of the inner bottom mold base 11 and the inner top mold cover 12 is, on the one hand, to allow the inner top mold cover 12 to slide into the inner bottom mold base 11 along the inner side of the top, so as to quickly assemble with the inner bottom mold base 11 and improve the assembly convenience between the inner top mold cover 12 and the inner bottom mold base 11; on the other hand, after the sand is filled into the action groove 111, the sand exerts a force on the inner top mold cover 12 in the direction of the central axis of the inner top mold cover 12, so as to prevent the inner top mold cover 12 from moving upward and disassembling from the inner bottom mold base 11, thereby improving the assembly stability of the inner top mold cover 12.

[0034] To improve the assembly accuracy of the inner top mold cover 12 and the inner bottom mold base 11, the function groove 111 is provided with positioning steps 112 at both ends of the inner bottom mold base 11 along its length, so that the two ends of the inner top mold cover 12 along its length abut against the two positioning steps 112, thus ensuring excellent assembly accuracy between the inner top mold cover 12 and the inner bottom mold base 11.

[0035] To improve the structural stability of the inner top mold cover 12, such as Figure 1 and Figure 5As shown in another embodiment of the present invention, in the mold for constructing a rapid flow channel, a plurality of reinforcing frames 14 are arranged at intervals along the length direction on the outer surface of the inner top mold cover 12, and each reinforcing frame 14 is arranged in close contact with the width direction of the inner top mold cover 12. The structural stability of the inner top mold cover 12 is improved by the cooperation of the plurality of reinforcing frames 14.

[0036] In this configuration, multiple extension blocks 141 are formed on both sides of the aforementioned reinforcement frames 14. These extension blocks 141 are all arranged close to the outer surface of the inner top mold cover 12 and, during assembly, abut against the bottom of one end of the multiple positioning mounting plates 2. Here, after the poured concrete has cured, the anchors fixing the positioning mounting plates 2 and the soil base 7 are first released. Then, the two reinforcement frames 14 are used as hoisting connection points to quickly dismantle the formwork of the rapid flow channel using a crane. The extension blocks 141 are designed to distribute the force on the inner top mold cover 12 to the positioning mounting plates 2 and the inner bottom mold base 11 during hoisting, thereby reducing the force on the inner top mold cover 12 and ensuring safe hoisting operations.

[0037] In this embodiment, two reinforcing frames 14 are shown; each reinforcing frame 14 includes a U-shaped block 142 and a hook block 143 extending outward from the two ends of the U-shaped block 142. The U-shaped block 142 is attached to the outer surface of the inner top mold cover 12 along the width direction and then fixedly connected by full welding. The two ends of the hook block 143 are welded to the top of the two ends of the inner top mold cover 12, so that the reinforcing frame 14 and the inner top mold cover 12 have a sufficiently large connection surface and improve their connection stability. The U-shaped block 142 is the main structure for enhancing the structural strength of the inner top mold cover 12, and the hook block 143 not only enhances the structural strength of the inner top mold cover 12, but also serves as a hoisting connection point during the demolding process.

[0038] Since the number of positioning mounting plates 2 is designed to be four, extension blocks 141 are formed at both ends of the U-shaped block 142. Thus, the two reinforcing frames 14 extend to form a total of four extension blocks 141. After assembly, one end of each of the four extension blocks 141 abuts against the bottom of one end of the four positioning mounting plates 2. The cooperation between the extension blocks 141 and the positioning mounting plates 2 not only distributes the force on the inner top mold cover 12 to the positioning mounting plates 2 and the inner bottom mold base 11 during hoisting, thereby reducing the force on the inner top mold cover 12, but also increases the pressing area of ​​the positioning mounting plates 2 on the inner top mold cover 12, thereby improving the assembly stability of the inner top mold cover 12 and the inner bottom mold base 11.

[0039] In order for the sand to quickly fill the working tank 111, such as Figure 3 , Figure 4 as well as Figure 6As shown, according to another embodiment of the present invention, the mold for constructing a rapid flow channel, wherein the cross-sectional area of ​​the working groove 111 gradually increases from the top end of the inner bottom mold base 11 to its bottom end.

[0040] In this embodiment, since the function groove 111 is arranged in a "U" shape, that is, the cross-sectional area of ​​both vertical sections of the function groove 111 gradually increases from its top to its bottom, after sand is added at the sand guide port 13, the binding force on the sand as it flows downward along the vertical section of the function groove 111 gradually decreases, and the sand's ability to diffuse in all directions within the function groove 111 becomes greater and greater, so as to ensure that the sand can quickly fill the function groove 111, thereby improving the structural strength of the inner mold 1 during use.

[0041] Because the design length of the mold used for this rapid flow channel construction is 1m, several molds need to be connected in sequence to meet the usage requirements. Therefore, the two molds to be connected need to be positioned quickly and accurately; for example... Figure 2 As shown, according to another embodiment of the present invention, the mold for constructing a rapid flow channel has a mating slot 4 formed at one end of the inner bottom mold base 11 along its length direction and a mating plug 5 that mates with the corresponding mating slot 4 formed at the other end.

[0042] In this embodiment, both the docking slot 4 and the docking block 5 are U-shaped. The two connected molds are connected quickly by inserting the docking block 5 into the corresponding docking slot 4.

[0043] According to another embodiment of the present invention, the method for constructing a rapid flow channel, by applying the mold for rapid flow channel construction to the rapid flow channel construction process, includes the following steps: Step S1: First, prepare by excavating the soil formwork trench. Mark the upper and lower control points of the rapid flow channel according to the design requirements, and determine the centerline using a string line. Determine the excavation width according to the design requirements. Excavate the trench manually with the assistance of a small excavator, carefully controlling the excavation depth, slope, and the position of the anti-slip platform. Determine the number of molds based on the length of the rapid flow channel, and apply a release agent to the functional surface of the inner bottom mold base 11, then allow it to dry naturally. The release agent is an existing material and will not be further explained here.

[0044] Step S2: Assemble several of the aforementioned rapid flow channel construction molds and connect them sequentially. The assembly of each of the aforementioned rapid flow channel construction molds is performed as follows: Step S21: First, slide the inner top mold cover 12 into the inner bottom mold base 11 until it abuts against the positioning step 112; Step S22: Secure one end of each positioning mounting plate 2 to the top of the inner bottom mold base 11 using a locking member 3, and ensure that this end of the positioning mounting plate 2 is pressed onto the corresponding extension block 141. Step S23: Using two hanging blocks 143 as hoisting connection points, the inner mold 1 is embedded into the excavated soil mold trench by hoisting, and it is ensured that the bottom surface of the other end of each positioning mounting plate 2 is attached to the soil base 7 outside the opening of the soil mold trench. Then, anchors are used to fix the positioning mounting plate 2 and the soil base 7.

[0045] It should be noted that when connecting two adjacent molds, the following steps are taken: after the first mold is assembled in the soil mold groove, the second mold is hoisted into the soil mold groove so that the docking block 5 of the second mold is inserted into the docking slot 4 in the first mold for docking. Then, anchors are used to fix the positioning mounting plate 2 and the soil base 7 to the second mold.

[0046] Step S3: Inject sand (dry sand, which is more conducive to sand flow) into the corresponding action groove 111 at the sand guide port 13 of each assembled mold and fill it completely. Then add water into the action groove 111 through the sand guide port 13 to make the sand bond more tightly and improve the structural strength of the inner mold 1. After adding water into the action groove 111, the sand will sink downward in the action groove 111, and there will be empty space at the top of the action groove 111. If the height of the empty space is greater than 1 / 6 of the height of the inner mold 1, sand can be added into the action groove 111 to fill it, ensuring that the inner mold 1 has sufficient structural strength.

[0047] Step S4: Inject concrete into the pouring cavity 6 of the formed rapid flow channel at each pouring port; this concrete is processed at the mixing plant and then transported to the site by a transport vehicle for pouring. During the pouring process, a vibrator can be used to vibrate the concrete.

[0048] Step S5: Demolding. After the poured concrete reaches a certain structural strength, insert heating rods (multiple heating rods can be arranged side-by-side at intervals) into the action groove 111 from the sand guide port to heat the sand to 50℃~70℃ and keep it at that temperature for 6-12 hours. Then remove the anchors and use two hanging blocks 143 as hoisting connection points to remove the inner mold 1 by hoisting. Heating the sand to 50℃~70℃ and keeping it at that temperature for 6-12 hours is mainly to increase the concrete curing temperature, promote early strength growth, and ensure early demolding. Secondly, it also forms a very thin water film between the action surface of the inner bottom mold base 11 and the concrete to further reduce the adhesion between the concrete and the formwork, which is beneficial for demolding. At the same time, it can also evaporate some of the water in the sand, which is beneficial for the sand to be discharged from the action groove 111 later.

[0049] Step S6: After the mold is removed, the formed rapid flow channel is routinely cured for no less than 5 days.

[0050] It should be noted that a sealing end plate is provided at both the beginning and end of the mold. The sealing end plate seals both ends of the formed rapid flow channel pouring mold cavity to prevent the poured concrete from being discharged. When demolding, the sealing end plate is removed first to provide a distance for the docking blocks and docking slots between adjacent molds to separate.

[0051] The construction process of the rapid flow channel also includes, on the basis of the above, the construction of an inlet at one end of the rapid flow channel and the construction of an outlet at the other end of the rapid flow channel; wherein, the construction of the inlet and the construction of the outlet can be carried out using existing construction methods, which will not be described in detail here.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A mold for constructing a rapid flow channel, used to be assembled inside a soil mold trench to form a rapid flow channel casting cavity, characterized in that, include: The inner mold is embedded in the soil mold groove to form the rapid flow channel casting mold cavity and includes an inner bottom mold base. The top side of the inner bottom mold base has a function groove for storing sand. The opening of the function groove is abutted by an inner top mold cover that seals it. The top of the inner bottom mold base has a sand guide port that communicates with the function groove. The positioning mounting plates are multiple in number, with one end of each positioning mounting plate distributed at the top of the inner bottom mold base and fixed by locking components. This end of each positioning mounting plate extends to the top of the inner top mold cover for pressing and fixing. The other end of each positioning mounting plate is fixed to the soil base outside the soil mold trench opening using anchors. At least two positioning mounting plates form a pouring port that communicates with the pouring mold cavity of the rapid flow channel.

2. The mold for constructing a rapid flow channel according to claim 1, characterized in that, Both the inner bottom mold base and the inner top mold cover are U-shaped, and the function groove is located on the top side of the inner bottom mold base and arranged along its design path. The distance between the two ends of the top side of the inner bottom mold base and the inner top mold cover is greater than the distance between the two ends of the bottom side.

3. A mold for constructing a rapid flow channel according to claim 1 or 2, characterized in that, Multiple reinforcing frames are arranged at intervals along the length direction on the outer surface of the inner top mold cover, and each reinforcing frame is attached to the width direction of the inner top mold cover.

4. The mold for constructing a rapid flow channel according to claim 3, characterized in that, Both of the aforementioned reinforcing frames have multiple extension blocks formed on them. The extension blocks are all arranged in close contact with the outer surface of the inner top mold cover and are correspondingly abutted against the bottom of one end of multiple positioning mounting plates during assembly.

5. A mold for constructing a rapid flow channel according to claim 1 or 2, characterized in that, The cross-sectional area of ​​the working groove gradually increases from the top of the inner bottom mold base to its bottom.

6. A mold for constructing a rapid flow channel according to claim 1 or 2, characterized in that, The inner bottom mold base has a mating slot at one end along its length and a mating block at the other end that mates with the corresponding mating slot.

7. A mold for constructing a rapid flow channel according to claim 1 or 2, characterized in that, Each of the aforementioned positioning mounting plates has a thickness that gradually decreases from its central portion toward the end connected to the locking element or anchor.

8. A method for constructing a rapid flow channel, characterized in that, Includes the following steps: Step S1: Excavate the soil mold trench, apply release agent to the working surface of the inner bottom mold base, and let it dry naturally; Step S2: Sequentially assemble and fix multiple molds for rapid flow channel construction as described in any one of claims 1-7 in the soil mold trench, and then inject sand into the corresponding working trench from each sand guide port and fill it completely; Step S3: Inject concrete into the casting cavity of the formed rapid flow channel at each pouring point; Step S4: Demolding; Step S5, Maintenance.

9. A method for constructing a rapid flow channel according to claim 8, characterized in that, In step S2, after filling the working tank with sand, water is added to the corresponding working tank from each sand guide port, and sand is replenished as needed.

10. A method for constructing a rapid flow channel according to claim 8, characterized in that, Before performing step S4, the sand in the working tank is heated to a preset temperature and maintained for a preset time.

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