Slurry pouring equipment for reservoir danger removal and reinforcement construction

Abstract

The invention discloses slurry pouring equipment for reservoir danger removal and reinforcement construction, which comprises a single stirring barrel and a double stirring barrel, and is characterized in that the single stirring barrel is provided with a first power mechanism, a feed port positioned at the top, an output pipe positioned at the bottom of the side surface and a first rotating shaft driven by the first power mechanism; and a mixing structure is mounted on the surface of the first rotating shaft. According to the invention, the single stirring barrel and the double stirring barrels are combined together through a combined design, so that the single stirring barrel can continuously perform stirring operation, and the double stirring barrels can store and mix slurry output by the single stirring barrel at any time and can also produce slurry by themselves; the formed integral combined structure not only can complete multiple mixing operations and adding additives in the midway, but also can form recovery of precipitated particles, so that the output quality of the slurry is improved and the waste of the slurry is reduced while the mixing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of mud construction, and in particular to a mud injection device for reservoir reinforcement and renovation. Background Technology

[0002] High-pressure jet grouting is a method that uses a drilling rig to drill a grouting pipe with a nozzle into a predetermined position in the soil layer. High-pressure equipment is then used to spray grout, water, or air at a high pressure of 20-40 MPa from the nozzle, cutting, disturbing, and damaging the soil. At the same time, the drill rod is gradually raised at a certain speed, forcibly mixing the grout with the soil particles. After the grout solidifies, it fills and reinforces the gaps in the soil, thereby strengthening the reservoir dam.

[0003] Therefore, in the construction process, mud mixing equipment and high-pressure jetting equipment are usually used simultaneously. The mud mixing equipment pours the mud into the high-pressure jetting equipment, and then the high-pressure jetting equipment pressurizes and sprays it out; or the high-pressure jetting equipment directly extracts the mud from the mud mixing equipment.

[0004] However, regardless of the process, the mud needs to be poured in after mixing. Therefore, the current construction process generally has the following problems: 1. High-pressure jetting equipment usually needs to work on multiple areas that need to be injected, and the working range is relatively large. If the mud mixing equipment cannot replenish the required injection mud in time, the high-pressure jetting equipment needs to stop working. 2. Mud mixing equipment usually cannot mix and transport mud immediately. Although conventional single-drum mixing equipment has a large mixing capacity, it can only be used after it is fully mixed. Although double-drum mixing equipment can mix and pour mud immediately, its mixing capacity is small and it cannot form a continuous mud transport in areas with large mud demand. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a mud injection equipment for reservoir reinforcement construction, which mainly solves the problem that mud cannot be supplied smoothly with the operation of high-pressure jetting equipment in the existing dam reinforcement process.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: In a first aspect, the present invention provides a mud injection device for reservoir reinforcement construction, comprising a single mixing tank and a double mixing tank, characterized in that the single mixing tank is equipped with a first power mechanism, a feed inlet located at the top, an output pipe located at the bottom of the side surface, and a first rotating shaft driven by the first power mechanism, wherein a mixing structure is installed on the surface of the first rotating shaft. The dual mixing tank includes an upper mixing tank, a lower mixing tank, a second power mechanism located at the top of the upper mixing tank, and a second rotating shaft driven by the second power mechanism and passing through the middle of the upper and lower mixing tanks respectively. The bottom of the upper mixing tank is provided with a drop outlet, the vertical projection of which is located within the vertical projection range of the lower mixing tank. The bottom of the lower mixing tank is provided with an upward-facing conical disk. The tops of both the upper and lower mixing tanks are open. A jet pipe is provided in the middle of the side surface of the lower mixing tank. The second rotating shaft drives the upper mixing component inside the upper mixing tank and the lower mixing component inside the lower mixing tank respectively. The output pipe is connected to the first grouting pump at one end. The output port of the first grouting pump is equipped with a connecting pipe. The end of the connecting pipe is fixed to the top edge of the upper mixing tank by a fastening ring. A return pipe is installed on the side of the conical disc. A second grouting pump is installed in the middle of the return pipe, and the end of the return pipe is installed to the middle of the output pipe.

[0007] Preferably, the second rotating shaft includes an upper drive shaft, a lower drive shaft, and a reduction mechanism installed between the upper drive shaft and the lower drive shaft. An upper stirring component is installed on the surface of the upper drive shaft, and a lower stirring component is installed on the surface of the lower drive shaft.

[0008] Preferably, the bottom of the upper drive shaft is connected to the reduction mechanism, and the reduction mechanism is connected to the lower drive shaft. The reduction mechanism is a planetary reducer or other reduction gearbox, and the reduction mechanism is used to reduce the rotational speed of the lower drive shaft to be less than that of the upper drive shaft.

[0009] Preferably, the bottom of the upper stirring component is provided with a scraping protrusion, and a support mechanism is installed between the upper stirring tank and the lower stirring tank.

[0010] Preferably, the mixing structure includes a spiral mixing zone and triangular mixing zones symmetrically arranged above and below the spiral mixing zone, with the included angle of the two sides of the triangular mixing zones facing the spiral mixing zone; a vertical support rod is connected between the two triangular mixing zones, and symmetrical horizontal support rods are installed inside the triangular mixing zones, with the horizontal support rods passing through the vertical support rods and connecting to the surface of the first rotating shaft.

[0011] Preferably, the spiral stirring zone includes a spiral rod and a fixing rod for fixing the spiral rod. The spiral rod is connected from one end of the upper triangular stirring zone to the other end of the lower triangular stirring zone, and the spiral rod is symmetrically arranged front and back.

[0012] Preferably, the feed inlet has a trapezoidal structure with an open top, including an inclined plate and vertical plates extending from both sides of the inclined plate to form three enclosures. The lower part of the inclined plate is provided with a rotating shaft and a blocking plate connected to the rotating shaft. The rotating shaft is provided with a torsion spring. A limit block is provided on the surface of the vertical plate, which is symmetrically installed with the inclined plate, corresponding to the blocking plate. The limit block is used to rotate the blocking plate upward.

[0013] Preferably, the surface of the baffle plate is equipped with a gas check valve, the gas check valves are arranged at equal intervals on the baffle plate, and the number of gas check valves is not less than two.

[0014] In a second aspect of the invention, an operating system for a mud injection device used in reservoir reinforcement and renovation construction is provided, characterized in that it includes: Single mixing tank, used for pre-mixing large quantities of slurry; The double mixing tank is used for secondary mixing of a small portion of the slurry mixed in the single mixing tank, and for circulating the unevenly mixed slurry; the double mixing tank includes an upper mixing tank and a lower mixing tank, and a drop-out port is provided between the upper mixing tank and the lower mixing tank; High-pressure jet grouting equipment includes a jet pump and a grout spray pipe, which is used to output grout from the double mixing tank through the jet pump and spray it to the target area in conjunction with the grout spray pipe; The first grouting pump is used to pump the grout from the inside of the single mixing tank to the upper mixing tank. The first grouting pump is connected to an output pipe and a connecting pipe. The output pipe is connected to the single mixing tank and the connecting pipe is connected to the upper mixing tank. The return pipe has a second grouting pump installed in the middle. The second grouting pump is used to pump the material from the lower mixing tank to the output pipe. One end of the return pipe is connected to the lower mixing tank, and the other end is connected to the output pipe.

[0015] Preferably, the number of single mixing tanks is one or more, and each single mixing tank further includes an on / off valve for connecting or closing the single mixing tank to the output pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention combines a single mixing tank and a double mixing tank through a combined design, enabling the single mixing tank to continuously perform mixing operations, while the double mixing tank can store and mix the slurry output from the single mixing tank at any time, and both tanks can also produce slurry on their own. The resulting integrated structure can not only complete multiple mixing operations and add additives midway, but also recover precipitated particles, thereby improving mixing efficiency, increasing the output quality of slurry, and reducing slurry waste.

[0017] 2: The present invention also improves the feed inlet based on the single mixing tank structure, so that the solubility of air is reduced during mixing, the uniformity of mixing is increased, and the feed inlet length can be extended during feeding to prevent the powder used for mixing from splashing and to adhere to the tank wall.

[0018] 3: The present invention also discloses a system connection structure based on the combined equipment, which enables the dual mixing tanks to be used synchronously with the high-pressure jet grouting equipment to complete the output of grout as it is mixed and poured, as well as the circulation of grout. When a large amount of grout is output, a large amount of mixing can be completed by circulating multiple single mixing tanks, preventing the high-pressure jet grouting equipment from stopping due to poor grout transportation.

[0019] 4: The mixing process of this invention allows a single mixing tank to complete the mixing operation for a large number of batches, followed by a double mixing tank for multiple batches of small-volume mixing to complete the secondary and tertiary mixing operations. This not only makes the slurry more uniform, but also results in the output grout having good sprayability and stability, as well as fewer air bubbles and excellent mechanical properties. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the mixing structure of the present invention; Figure 3 This is a schematic diagram of the inlet structure of the present invention; Figure 4 This is a schematic diagram of the system modules of the present invention; In the diagram: 1. Single mixing tank; 101. First power mechanism; 102. Output pipe; 103. First rotating shaft; 2. Double mixing tank; 201. Upper mixing tank; 2011. Drop outlet; 2012. Upper mixing component; 2013. Bottom scraper protrusion; 202. Lower mixing tank; 2021. Conical disc; 2022. Jet pipe; 2023. Lower mixing component; 203. Second power mechanism; 204. Second rotating shaft; 2041. Upper drive shaft; 2042. Lower drive shaft; 2043. Reducer 205. Supporting mechanism; 3. Feed inlet; 301. Inclined plate; 302. Vertical plate; 303. Rotating shaft; 304. Baffle plate; 305. Limiting block; 306. Gas check valve; 4. Mixing structure; 401. Spiral mixing zone; 402. Triangular mixing zone; 403. Vertical support rod; 404. Horizontal support rod; 405. Spiral rod; 406. Fixing rod; 5. First grouting pump; 501. Connecting pipe; 502. Fastening ring; 503. Return pipe; 504. Second grouting pump. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0022] Example 1 like Figure 1-2 As shown, this invention provides a mud injection device for reservoir reinforcement and reinforcement construction, including a single mixing tank 1 and a double mixing tank 2. Please refer to [link / reference]. Figure 1 A first power mechanism 101 is provided on the single mixing tank 1, and a second power mechanism 203 is provided on the double mixing tank 2. Both the first power mechanism 101 and the second power mechanism 203 are motors as drive sources, respectively driving the first rotating shaft 103 inside the single mixing tank 1 and the second rotating shaft 204 inside the double mixing tank 2. The first rotating shaft 103 achieves the mixing operation through the mixing structure 4 installed on the surface. A feed port 3 is provided at the top of the single mixing tank 1, and an output pipe 102 is installed at the bottom of the single mixing tank 1. The cement first completes the preliminary mixing operation inside the single mixing tank 1 and is discharged from the output pipe 102. The dual mixing tank 2 includes an upper mixing tank 201 and a lower mixing tank 202. The bottom of the upper mixing tank 201 is provided with a drop outlet 2011 for vertically conveying slurry to the lower mixing tank 202. The bottom of the lower mixing tank 202 is provided with an upwardly conical disc 2021. The end of the output pipe 102 is connected to the first grouting pump 5. The output port of the first grouting pump 5 is equipped with a connecting pipe 501. The end of the connecting pipe 501 is fixed to the top opening of the upper mixing tank 201 by a fastening ring 502. The second rotating shaft 204 drives the upper mixing tank 201. The components include 2012 and a lower mixing component 2023 inside the lower mixing tank 202. A spray pipe 2022 is provided in the middle of the lower mixing tank 202. The spray pipe 2022 is used to inject into the target hole groove. A return pipe 503 is installed on the side of the conical disk 2021. A second grouting pump 504 is installed in the middle of the return pipe 503. The end of the return pipe 503 is installed to the middle of the output pipe 102. The second rotating shaft 204 includes an upper drive shaft 2041, a lower drive shaft 2042, and a reduction mechanism 2043 installed between the upper drive shaft 2041 and the lower drive shaft 2042. Its overall structure allows for the following: after a large amount of cement is mixed inside the single mixing tank 1, it is output from the output pipe 102 in conjunction with the first grouting pump 5 and the connecting pipe 501 to the upper mixing tank 201, where it is mixed again. During the mixing process, other admixtures, such as accelerators, defoamers, and water-reducing agents, can be added to the upper mixing tank 201. After being rapidly and evenly mixed by the upper agitator 2012, the admixtures enter the lower mixing tank 202 through the drop outlet 2011, and then are further mixed by the bottom agitator. After the mixing unit 2023 slowly stirs the slurry to reduce the air bubbles that may be generated, any clumps that are not fully mixed will fall to the bottom of the conical disc 2021 and be circulated to the output pipe 102 through the return pipe 503 by the second grouting pump 504. Then, they will re-enter the upper mixing tank 201 through the connecting pipe 501 for further mixing. This results in the grout output from the spray pipe 2022 in the lower mixing tank 202 having good sprayability, stability, and excellent mechanical properties due to fewer air bubbles.

[0023] Furthermore, the bottom of the upper drive shaft 2041 is connected to the reduction mechanism 2043, and the reduction mechanism 2043 is connected to the lower drive shaft 2042. The reduction mechanism 2043 is a planetary reducer or other reduction gearbox. The reduction mechanism 2043 is used to ensure that the rotation speed of the lower drive shaft 2042 is less than that of the upper stirring component 2012. The bottom of the upper mixing element 2012 is provided with a scraping protrusion 2013, a support mechanism 205 is installed between the upper mixing tank 201 and the lower mixing tank 202, and the spray pipe 2022 is installed in the middle of the lower mixing tank 202. The rotational speed of the upper agitator 2012 is higher than that of the lower agitator 2023. The upper agitator 2012 mainly mixes and stirs the newly added additives and stirs the unevenly stirred particles evenly. The gap between the bottom scraper protrusion 2013 and the bottom of the upper mixing tank 201 is small, so the slurry at the bottom of the upper mixing tank 201 can continuously enter the lower mixing tank 202 from the drop port 2011. The lower agitator 2023, as a slow stirring structure, can reduce the shear force and turbulence on the slurry during the slow stirring process, thereby reducing the generation of bubbles. When combined with the evenly mixed defoamer, the bubbles will be released from the top, and the unevenly stirred particles will sink to the bottom. The spray pipe 2022 is located in the middle and extracts the high-performance slurry for mud injection.

[0024] Furthermore, the mixing structure 4 includes a spiral mixing zone 401 and triangular mixing zones 402 symmetrically arranged above and below the spiral mixing zone 401. The inclined structure of the triangular mixing zones 402 is located on the outer side, and vertical support rods 403 connect the symmetrical triangular mixing zones 402. The triangular mixing zones 402 first coarsely mix and disperse the cement and water poured into the feed port 3, allowing the cement powder to be initially mixed and dispersed on both sides of the first rotating shaft 103. The internal liquid of the symmetrical triangular mixing zones 402 is continuously rotated, concentrating the liquid flow direction in the middle. That is, the higher part of the upper triangular mixing zone 402 is exposed on the water surface. After contacting the cement powder, it is dispersed and falls evenly onto the water surface, and moves downward after initial mixing. The lower triangular mixing zone 402 mainly pushes the downward-settled cement powder upward, and works with the spiral mixing zone 401 to form a mixing cycle in the middle and lower part. At this time, the spiral mixing zone 401 forms a secondary mixing effect. In order to increase the mixing intensity of the upper and lower triangular mixing zones 402, symmetrical horizontal support rods 404 are installed inside the triangular mixing zone 402. The horizontal support rods 404 pass through the vertical support rods 403 and are connected to the surface of the first rotating shaft 103, so that the upper and lower parts of the triangular mixing zone 402 form a vertical support effect. The vertical support rods 403 are close to the first rotating shaft 103. The support structure formed by the horizontal support rods 404 and the vertical support rods 403 can be a frame structure during mixing, and avoid the slurry mixture from concentrating and adhering to the surface of the first rotating shaft 103.

[0025] Furthermore, such as Figure 2 As shown, the spiral mixing zone 401 is similar to the ribbon mixing blade, including a spiral rod 405 and a fixing rod 406 for fixing the spiral rod 405. The spiral rod 405 is connected from one end of the upper triangular mixing zone 402 to the other end of the lower triangular mixing zone 402, and the upper and lower triangular mixing zones 402 are symmetrically staggered to form a spiral structure. The fixing rod 406 is installed at different positions on the inner side of the spiral rod 405 and connected to the vertical support rod 403 and the first rotating shaft 103 to form a vertical support for the spiral rod 405. Since the spiral mixing zone 401 is suitable for mixing paste-like, viscous or high-density materials, in the face of a process that requires rapid mixing, the cement powder that has just entered will first be dispersed by the upper triangular mixing zone 402, and the undispersed part will enter the lower triangular mixing zone 402 due to sedimentation and be dispersed again. The dispersed powder will flow towards the center along the symmetrical triangular mixing zones 402. With the water source concentrated in the center, it will be directly stirred by the spiral mixing zone 401. The slurry after uniform stirring will be heavier and its mass will decrease. The lower triangular mixing zone 402 will also spiral upward again to lift the liquid that was not uniformly stirred at the bottom, so that the liquid inside the single mixing tank 1 will continue to circulate and stir until it is uniformly stirred inside the single mixing tank 1 and then discharged from the output pipe 102.

[0026] Specifically, the overall structure mainly uses a single mixing tank 1 for initial mixing. After mixing, the slurry is output to the upper mixing tank 201 for secondary feeding or simply to achieve continuous mixing. Then, it enters the lower mixing tank 202 from the drop outlet 2011 to form a slow mixing operation. At this time, it forms an upper and lower flow separation effect, allowing the higher quality slurry in the middle to be discharged. The slurry settled in the bottom conical plate 2021 is circulated back to the output pipe 102 by the second grouting pump 504. The first grouting pump 5, together with the newly added slurry, circulates back to the upper mixing tank 201 through the connecting pipe 501 for mixing, so as to realize slurry diversion, secondary utilization of settled slurry, and slurry circulation mixing operation. This combination method not only ensures the functionality of the original mixing tanks, namely that the single mixing tank 1 and the double mixing tank 2 can still be disassembled and used independently, but also results in higher quality slurry output after using this combination. The large-scale mixing formed by the single mixing tank 1, combined with the independent cyclic operation of the double mixing tank 2, allows the mud injection process to continue without waiting for the single mixing tank 1 to work, or avoids the situation where the low operating efficiency of the double mixing tank 2 leads to insufficient slurry volume during large-scale injection operations. Furthermore, the average quality of the slurry output after the combination is higher, which can further improve the injection quality of reservoir reinforcement.

[0027] Example 2 The difference from Example 1 is that, as Figure 3 As shown, the feed inlet 3 has a trapezoidal structure with an open top, including an inclined plate 301 and a vertical plate 302 extending from both sides of the inclined plate 301 to form a three-sided enclosure. A rotating shaft 303 and a blocking plate 304 connected to the rotating shaft 303 are provided at the lower part of the inclined plate 301. The rotating shaft 303 is equipped with a torsion spring for the blocking plate 304 to rotate upward. A limiting block 305 is provided on the surface of the vertical plate 302, which is symmetrically installed with the inclined plate 301, corresponding to the blocking plate 304. Under normal conditions, whether water or cement powder is poured into the feed inlet 3, the blocking plate 304 will flip downward until it fits against the inclined plate 301 to form a uniform tilt angle. After the feeding is completed, the blocking plate 304 will move upward due to the torsion spring at the rotating shaft 303 until the bottom of the limiting block 305 is horizontal and the rotation angle is limited. This allows the baffle plate 304 to extend downwards into the single mixing drum 1 during the feeding process. When the triangular mixing zone 402 rotates, powdery materials such as cement powder can be broken up at close range from the upper part of the triangular mixing zone 402 near the inclined rod, preventing them from falling due to gravity and directly adhering to the inner wall of the single mixing drum after being broken up. At the same time, due to the splashing of slurry during the internal mixing process, the baffle plate 304 can also block the splashed slurry.

[0028] Furthermore, a gas check valve 306 is installed on the surface of the baffle plate 304. The gas check valves 306 are arranged at equal intervals on the baffle plate 304, and the number of gas check valves 306 is not less than two. Because the internal rotation speed of the single mixing tank 1 is relatively fast, once a vortex is generated, it will accelerate the mixing of air and slurry. Therefore, after the baffle plate 304 is closed, a closed space will be formed inside the single mixing tank 1. Since the powder itself has large gaps, especially after it clumps and settles inside, it will bring a large amount of air into the water. After rapid stirring, bubbles will be generated in the slurry and float to the surface due to mixing until they break and separate on the surface. After breaking, the internal air pressure will increase. At this time, the gas one-way valve 306 can release the gas discharged due to mixing while sealing the internal space, so that the internal air pressure is always kept at a low level, thereby reducing the generation of bubbles in the slurry.

[0029] Example 3 like Figure 4 As shown, the present invention also provides an operating system for mud injection equipment used in reservoir reinforcement and renovation construction, the system comprising: Single mixing tank 1, used for pre-mixing large quantities of slurry; The double mixing tank 2 is used for secondary mixing of a small portion of the slurry mixed in the single mixing tank 1, and for circulating the unevenly mixed slurry; the double mixing tank 2 includes an upper mixing tank 201 and a lower mixing tank 202, and a drop outlet 2011 is provided between the upper mixing tank 201 and the lower mixing tank 202. The high-pressure jet grouting equipment includes a jet pump and a grout spray pipe. The jet pump pressurizes the spray pipe 2022, causing the grout to be sprayed out to the target area. The first grouting pump 5 is used to pump the grout inside the single mixing tank 1 to the upper mixing tank 201. The first grouting pump 5 is connected to the output pipe 102 and the connecting pipe 501 respectively. The output pipe 102 is connected to the single mixing tank 1, and the connecting pipe 501 is connected to the upper mixing tank 201. The return pipe 503 has a second grouting pump 504 installed in the middle. The second grouting pump 504 is used to pump the material from the lower mixing tank 202 to the output pipe 102. One end of the return pipe 503 is connected to the lower mixing tank 202, and the other end is connected to the output pipe 102. For details, please refer to Figure 4 The output pipe 102 can be connected to different single mixing tanks 1 through the pipe structure design. The single mixing tank 1 can be provided with multiple pipes connected to the output pipe 102. The first grouting pump 5 switches between different single mixing tanks 1 based on the output pipe 102 according to the opening and closing of the single mixing tank 1. The single mixing tank 1 also includes an opening and closing valve, which is a slurry valve or a slurry knife gate valve, etc. That is, the operator opens the opening and closing valve of the target single mixing tank 1 according to whether the single mixing tank 1 has finished mixing. After opening, if the other single mixing tanks have also finished mixing, the speed is reduced and a slow stirring state is maintained. The slurry output from the single mixing drum enters the upper mixing tank 201 through the first grouting pump 5. Admixtures can be added from the upper mixing tank 201. At the same time, the upper mixing tank 201 is kept in a rapid mixing state and outputs to the lower mixing tank 202. The lower mixing tank 202 slowly mixes the slurry, causing the heavier particles to settle. The middle slurry enters the high-pressure rotary jet grouting equipment from the jet pipe 2022 to complete the grouting operation. The bottom slurry is returned to the output pipe 102 through the return pipe 503, recycled for a second time, and enters the upper mixing tank 201 to be mixed with the new slurry again.

[0030] The high-pressure jet grouting equipment in this system is located on the ground and is mainly used for grout injection at the boreholes of dams. Because the overall working range of the high-pressure jet grouting equipment is large during dam reinforcement, it can spray grout into different areas where boreholes have been completed. After drilling, the prepared grout needs to be continuously sprayed from the grout nozzles. This system, however, can allocate different numbers of single mixing tanks 1 and double mixing tanks 2 for alternating use within the area or along the route, depending on the movement of the high-pressure jet grouting equipment or the amount of grout to be injected. This allows the high-pressure jet grouting equipment to operate continuously without stopping, eliminating the need to wait for the grout to be mixed, thus greatly improving work efficiency. This system is suitable for urgent reinforcement operations with short construction periods or during the frequent rainy season in southern regions. This system has been practically applied to multiple reservoir dams in a southern region, shortening the construction period by more than 10%, and the grout quality is more stable compared to previous methods.

[0031] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mud injection device for reservoir reinforcement and renovation construction, comprising a single mixing tank (1) and a double mixing tank (2), characterized in that, The single mixing tank (1) is equipped with a first power mechanism (101), a feed inlet (3) located at the top, an output pipe (102) located at the bottom of the side surface, and a first rotating shaft (103) driven by the first power mechanism (101). A mixing structure (4) is installed on the surface of the first rotating shaft (103). The dual mixing tank (2) includes an upper mixing tank (201), a lower mixing tank (202), a second power mechanism (203) located at the top of the upper mixing tank (201), and a second rotating shaft (204) driven by the second power mechanism (203) and passing through the middle of the upper mixing tank (201) and the lower mixing tank (202) respectively; the bottom of the upper mixing tank (201) is provided with a drop outlet (2011), and the vertical projection of the drop outlet (2011) is located in the lower mixing tank (202). 02) Within the vertical projection range, the bottom of the lower mixing tank (202) is provided with an upward conical disk (2021), the tops of the upper mixing tank (201) and the lower mixing tank (202) are both open, and the middle of the side surface of the lower mixing tank (202) is provided with a jet pipe (2022). The second rotating shaft (204) drives the upper mixing component (2012) inside the upper mixing tank (201) and the lower mixing component (2023) inside the lower mixing tank (202) respectively. The output pipe (102) is connected to the first grouting pump (5) at its end. The output port of the first grouting pump (5) is equipped with a connecting pipe (501). The end of the connecting pipe (501) is fixed to the top edge of the upper mixing tank (201) by a fastening ring (502). A return pipe (503) is installed on the side of the conical disc (2021). A second grouting pump (504) is installed in the middle of the return pipe (503), and the end of the return pipe (503) is installed to the middle of the output pipe (102).

2. The mud injection equipment for reservoir reinforcement and renovation construction according to claim 1, characterized in that, The second rotating shaft (204) includes an upper drive shaft (2041), a lower drive shaft (2042), and a reduction mechanism (2043) installed between the upper drive shaft (2041) and the lower drive shaft (2042). An upper stirring element (2012) is installed on the surface of the upper drive shaft (2041), and a lower stirring element (2023) is installed on the surface of the lower drive shaft (2042).

3. The mud injection equipment for reservoir reinforcement and renovation construction according to claim 2, characterized in that, The bottom of the upper drive shaft (2041) is connected to the reduction mechanism (2043), and the reduction mechanism (2043) is connected to the lower drive shaft (2042). The reduction mechanism (2043) is a planetary reducer or other reduction gearbox. The reduction mechanism (2043) is used to reduce the rotational speed of the lower drive shaft (2042) to be less than that of the upper drive shaft (2041).

4. The mud injection equipment for reservoir reinforcement and renovation construction according to claim 3, characterized in that, The bottom of the upper stirring component (2012) is provided with a scraping protrusion (2013), and a support mechanism (205) is installed between the upper stirring tank (201) and the lower stirring tank (202).

5. A mud injection device for reservoir reinforcement and safety improvement construction according to claim 1 or 4, characterized in that, The mixing structure (4) includes a spiral mixing zone (401) and triangular mixing zones (402) symmetrically arranged above and below the spiral mixing zone (401). The included angle of the two sides of the triangular mixing zones (402) on both sides faces the spiral mixing zone (401). A vertical support rod (403) is connected between the two triangular mixing zones (402). Symmetrical horizontal support rods (404) are installed on the inner side of the triangular mixing zone (402). The horizontal support rods (404) pass through the vertical support rods (403) and are connected to the surface of the first rotating shaft (103).

6. The mud injection equipment for reservoir reinforcement and renovation construction according to claim 5, characterized in that, The spiral stirring zone (401) includes a spiral rod (405) and a fixing rod (406) for fixing the spiral rod (405). The spiral rod (405) is connected from one end of the upper triangular stirring zone (402) to the other end of the lower triangular stirring zone (402), and the spiral rod (405) is symmetrically arranged front and back.

7. The mud injection equipment for reservoir reinforcement and renovation construction according to claim 6, characterized in that, The feed inlet (3) has a trapezoidal structure with an open top, including an inclined plate (301) and a vertical plate (302) extending from both sides of the inclined plate (301) to form a three-sided enclosure. The lower part of the inclined plate (301) is provided with a rotating shaft (303) and a blocking plate (304) connected to the rotating shaft (303). The rotating shaft (303) is provided with a torsion spring. The surface of the vertical plate (302) which is symmetrically installed with the inclined plate (301) is provided with a limiting block (305) corresponding to the blocking plate (304). The limiting block (305) is used to make the blocking plate (304) rotate upward.

8. The mud injection equipment for reservoir reinforcement and renovation construction according to claim 7, characterized in that, Gas check valves (306) are installed on the surface of the baffle plate (304). The gas check valves (306) are arranged at equal intervals on the baffle plate (304), and the number of gas check valves (306) is not less than two.

9. An operating system for a mud injection equipment used in reservoir reinforcement and renovation construction, characterized in that, include: A single mixing tank (1) is used for pre-mixing a large amount of slurry; The double mixing tank (2) is used for secondary mixing of a small portion of the slurry mixed in the single mixing tank (1) and for circulating the unevenly mixed slurry; the double mixing tank (2) includes an upper mixing tank (201) and a lower mixing tank (202), and a drop outlet (2011) is provided between the upper mixing tank (201) and the lower mixing tank (202). The high-pressure jet grouting equipment includes a jet pump and a grout spray pipe, which is used to output grout from the double mixing tank (2) through the jet pump and spray it to the target area in conjunction with the grout spray pipe; The first grouting pump (5) is used to pump the slurry inside the single mixing tank (1) to the upper mixing tank (201). The first grouting pump (5) is connected to the output pipe (102) and the connecting pipe (501) respectively. The output pipe (102) is connected to the single mixing tank (1), and the connecting pipe (501) is connected to the upper mixing tank (201). The return pipe (503) is equipped with a second grouting pump (504) in the middle. The second grouting pump (504) is used to pump the material from the lower mixing tank (202) to the output pipe (102). One end of the return pipe (503) is connected to the lower mixing tank (202), and the other end is connected to the output pipe (102).

10. A mud injection device for reservoir reinforcement and renovation construction according to claim 9, characterized in that, The number of the single stirring tanks (1) is one or more, and the single stirring tank (1) also includes an on / off valve, which is used to connect or close the single stirring tank (1) to the output pipe (102).

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