Dam body plugging device and plugging method

Abstract

The application discloses dam body leaking stoppage equipment and a leaking stoppage method, and relates to the field of grouting repairing devices. The dam body leaking stoppage equipment comprises a hydraulic splitting machine and a plug rod, a connecting rod is fixedly connected to the telescopic end of the hydraulic splitting machine, the plug rod is threadedly connected to the connecting rod, and the equipment further comprises two groups of double-wing grooved plates which are rotatably connected to the plug rod; after the two groups of double-wing grooved plates are spliced together, the grooved plates can form a groove plate with a circular middle part and extension ends on opposite sides, and the groove plate can form a splitting groove in the dam body after being pressed into the soil; and a pressing strip is fixedly connected to the bottom of the double-wing grooved plate. The transverse pressing groove in the splitting groove can play a guiding role, the grouting liquid can flow to the extension ends on both sides along the pressing groove, direct impact of the grouting liquid on the splitting groove is avoided, and leakage caused by the penetration of the grouting liquid into the soil of the non-extension end is reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of grouting repair devices, specifically, it relates to a dam body plugging device and a plugging method. Background Technology

[0002] Earthen dams are common infrastructure in water conservancy projects such as flood control and farmland irrigation, playing a key role in water resource regulation and regional security. However, due to the physical properties of the soil itself, complex geological environment, long-term hydraulic erosion, freeze-thaw cycles, etc., earthen dams are prone to leakage.

[0003] Therefore, polymer-directed splitting grouting technology is often used for seepage prevention and control of soil dams. This technology is based on the theory of sheet diffusion. It uses trenching equipment to construct directional splitting trenches in the soil dam body, and then forms an ultra-thin seepage prevention system through the chemical reaction expansion characteristics of polymer materials.

[0004] However, once the split grooves of the earthen dam are formed, they are prone to collapse due to soil rebound. Furthermore, during grouting, due to the low strength and high permeability of the soil, the grouting fluid can easily seep into the soil outside the split grooves, causing gaps between the ultra-thin anti-seepage system or weak anti-seepage surface strength, which affects the sealing effect. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a grouting repair device that can overcome or at least partially solve the above problems.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is: a dam body sealing device, including a hydraulic splitter and a plunger, wherein a connecting rod is fixedly connected to the telescopic end of the hydraulic splitter, and the plunger is threadedly connected to the connecting rod, and further includes:

[0007] Two sets of double-wing troughing plates are rotatably connected to the insert rod. When the two sets of double-wing troughing plates are spliced ​​together, they can form a trough plate with a circular middle and extended ends on opposite sides. After being pressed into the soil, it can form a splitting groove in the dam body.

[0008] The pressure strip is fixedly connected to the bottom of the double-wing grooving plate. By rotating the double-wing grooving plate, the pressure strip can further compress the splitting groove, thereby forming a transverse pressure groove for guiding the grout to the extension end of the splitting groove.

[0009] The hydraulic splitter inserts the rod and the double-wing grooving plate into the dam body to form a splitting groove with a circular center and extended ends on both sides. After the splitting groove is pressed, the rod moves slowly upward. At this time, the two sets of double-wing grooving plates rotate and reset continuously, so that the pressure bar continuously presses out grooves on the inner wall of the splitting groove.

[0010] Further, a plurality of groups of spray nozzles one and two are mounted on the bottom of the insertion rod, the spray nozzles one are used for spraying curing agent mist to the circular area of the splitting groove, and the spray nozzles two are used for spraying curing agent mist to the extension end of the splitting groove.

[0011] Still further, a connecting block one is fixedly connected to the insertion rod, a connecting block two is fixedly connected to the double-wing grooved plate, and the connecting block one is rotatably connected in the connecting block two.

[0012] Still further, a mounting cavity is arranged on the side wall of the insertion rod, an electric telescopic rod is fixedly connected in the mounting cavity, and the telescopic end of the electric telescopic rod abuts against the double-wing grooved plate. Through the electric telescopic rod, the double-wing grooved plate can be rotated through the connecting block two, so that the pressing strip extrudes the splitting groove to form a pressing groove.

[0013] In order to limit and fix, further, an electromagnet one is mounted on the insertion rod, and the electromagnet one is used for fixing the double-wing grooved plate on the insertion rod.

[0014] Still further, a mounting ring is mounted on the insertion rod, a plurality of mounting grooves are arranged on the mounting ring, and the spray nozzles one and two are mounted in the mounting grooves.

[0015] Still further, a sliding ring is slidably connected to the insertion rod, the sliding ring is matched with the mounting ring, and the sliding ring is used for protecting the spray nozzles one and two.

[0016] In order to facilitate the movement of the sliding ring, further, an electromagnet two is fixedly connected to the insertion rod, the electromagnet two is used for adsorbing and fixing the sliding ring, a limiting ring is mounted on the bottom of the insertion rod, and the limiting ring is used for limiting the movement of the sliding ring.

[0017] In order to facilitate the entry of the curing agent liquid, still further, a liquid inlet pipe is mounted in the insertion rod, the liquid inlet pipe is used for connecting the curing agent liquid, a connecting pipe is connected to the liquid inlet pipe, and the connecting pipe is communicated with the spray nozzles one and two.

[0018] A dam body plugging method adopts a dam body plugging device, and includes the following operation steps:

[0019] Step one, the insertion rod and the double-wing grooved plate are inserted into the dam body through the hydraulic splitting machine, so that the splitting groove with the circular middle part and the extension end on both sides is formed;

[0020] Step two, the insertion rod and the double-wing grooved plate are slowly pulled out by the hydraulic splitting machine, at this time, the two groups of double-wing grooved plates are continuously rotated through the electric telescopic rod, and the horizontal pressing groove is pressed in the splitting groove through the pressing strip;

[0021] Step three, through the nozzle one, nozzle two, constantly in the split slot with pressure slot spray curing agent mist, until the plug rod is completely pulled out;

[0022] Step four, the above steps are cycled until all the split slots are prepared;

[0023] Step five, by inserting the split slot in the slot sealing grouting pipe and split grouting pipe, a small amount of slurry is injected into the top of the split slot through the slot sealing grouting pipe to seal the hole;

[0024] Step six, grouting at a predetermined depth through the split grouting pipe, the grouting liquid reacts and expands, flows along the guide direction of the split slot, forms a high polymer sheet, and the sheets in each split slot are cross-lapped to form an ultra-thin high polymer impermeable layer.

[0025] After the above technical scheme is adopted, the dam leakage plugging equipment has the following beneficial effects compared with the prior art: the transverse pressure groove in the split slot can guide the flow of the grouting liquid to the extension ends on both sides of the pressure groove, avoid damage to the split slot caused by direct impact of the grouting liquid, and reduce leakage caused by penetration of the grouting liquid into the soil at the non-extension end.

[0026] Meanwhile, the transverse pressure groove can strengthen the split slot and disperse the concentrated stress around the split slot to multiple pressure mark nodes, reducing the risk of collapse of the slot wall caused by excessive local stress. BRIEF DESCRIPTION OF DRAWINGS

[0027] In the drawings:

[0028] Figure 1 A structural schematic view of a dam leakage plugging equipment according to the present application is shown in the drawings.

[0029] Figure 2 A structural schematic view of a dam leakage plugging equipment according to the present application is shown in the drawings. Figure 1 A structural schematic view of a dam leakage plugging equipment according to the present application is shown in the drawings.

[0030] Figure 3 A structural schematic view of a dam leakage plugging equipment according to the present application is shown in the drawings. Figure 1 ;

[0031] Figure 4 A structural schematic view of a dam leakage plugging equipment according to the present application is shown in the drawings. Figure 2 ;

[0032] Figure 5 A structural schematic view of a dam leakage plugging equipment according to the present application is shown in the drawings. Figure 1 ;

[0033] Figure 6 A structural schematic view of a dam leakage plugging equipment according to the present application is shown in the drawings.Figure 5 Structure diagram of part B of the dam body plugging device;

[0034] Figure 7 Structure diagram of the cross section of the inserted rod and the double-wing slotting plate of the dam body plugging device proposed in the present application Figure 2 ;

[0035] Figure 8 Structure diagram of the dam body plugging device proposed in the present application Figure 7 Structure diagram of part C of the dam body plugging device;

[0036] Figure 9 Structure diagram of the dam body plugging device proposed in the present application for preparing the splitting groove

[0037] Figure 10 Structure diagram of the dam body plugging device proposed in the present application for preparing the transverse pressure groove in the splitting groove

[0038] Figure 11 Structure diagram of the dam body plugging device proposed in the present application for the flow of the grouting liquid in the splitting groove.

[0039] In the figure: 1, hydraulic splitting machine; 101, connecting rod; 2, inserted rod; 201, connecting block one; 3, double-wing slotting plate; 301, connecting block two; 302, electric telescopic rod; 4, pressing strip; 501, electromagnet one; 502, electromagnet two; 601, mounting ring; 602, sliding ring; 603, limiting ring; 701, spray head one; 702, spray head two; 801, liquid inlet pipe; 802, connecting pipe. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0041] Embodiment: refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 9 , Figure 10 , Figure 11The utility model provides a dam body leaking stoppage equipment, including hydraulic wedge machine 1, insert rod 2, the telescopic end of hydraulic wedge machine 1 is fixedly connected with connecting rod 101, insert rod 2 is screwed on connecting rod 101, still include: two groups of double wing grooving plate 3, all are rotatably connected in insert rod 2, two groups of double wing grooving plate 3 are spliced together, can form the grooving plate of the extension end of opposite two sides with the circular middle, after being pressed into the soil, can form the wedge groove in dam body, pressing strip 4 is fixedly connected at the bottom of double wing grooving plate 3, through the rotation of double wing grooving plate 3, can make pressing strip 4 further extrude wedge groove, and then form the transverse pressure groove for guiding the grouting liquid to the extension end of wedge groove, through hydraulic wedge machine 1, insert rod 2 and double wing grooving plate 3 are inserted into dam body, and then form the wedge groove of the extension end of opposite two sides with the circular middle, after the completion of wedge groove pressing, insert rod 2 slowly moves upwards, at this time, two groups of double wing grooving plate 3 constantly rotate and reset, make pressing strip 4 constantly press out the transverse pressure groove on the inner wall of wedge groove.

[0042] Before use, the device carries out geological survey on the dam, determines the type, stratification, physical and mechanical properties of the dam and surrounding soil, such as density, water content, shear strength, compressibility, etc., and determines the permeability and weak interlayer position of the soil.

[0043] Then accurate geological information is obtained by drilling core sampling, in-situ testing and other means to provide basis for subsequent construction parameter determination, and the crack position is determined by radar detector.

[0044] Then the hydraulic wedge machine 1 is moved to the pre-set wedge position, then the double wing grooving plate 3 is installed on the insert rod 2, and the insert rod 2 is connected to the connecting rod 101 by screwing, then the insert rod 2 is inserted into the ground by the hydraulic wedge machine 1, and then the wedge groove as shown in Figure 9 is formed until the pre-set depth is reached, at this time the insert rod 2 slowly moves upwards, at this time the pressure groove depth is 2-6cm, and the interval is 8-14cm, and the specific depth and interval need to be comprehensively judged according to the actual soil and depth.

[0045] While slowly moving upwards, the double wing grooving plate 3 expands and resets the gap, and the expanded state is as shown in Figure 5 When the double wing grooving plate 3 rotates and expands, the pressing strip 4 located below contacts the inner wall of the wedge groove pressed before, and then a plurality of transverse pressure grooves are pressed on the smooth inner wall of the wedge groove, at this time it needs to be noted that the upward movement is a slow movement, and too fast movement will cause a large area of soil to be scraped off or damaged, instead of a single transverse indentation.

[0046] At this time, the pressure groove can prevent the material from slipping, because for relatively soft soil medium, the transverse pressure mark can block the reinforcing material from slipping along the longitudinal direction of the splitting groove under the action of gravity or external force, ensuring that the material is evenly distributed in the target area, especially the two extension sections.

[0047] When the insertion rod 2 is finally pulled out, transverse pressure grooves will appear in the splitting groove at this time, and then a sealing and grouting pipe and a splitting grouting pipe are inserted into the splitting groove. A small amount of slurry is injected into the top of the splitting groove through the sealing and grouting pipe to seal the hole, and then the splitting grouting pipe is used to inject grouting at a predetermined depth. At this time, the grouting liquid reacts and expands, flows along the guide direction of the splitting groove, and forms a high polymer sheet. Finally, the sheets in each splitting groove will overlap to form an ultra-thin high polymer impermeable layer.

[0048] When the grouting liquid is injected through the splitting grouting pipe, the transverse pressure groove will form a concave-convex texture on the inner wall of the splitting groove. When grouting, the material can fill the pressure mark groove, forming a structure similar to "mechanical occlusion", a "screw thread" anchoring effect, and strengthening the strength and stability of the high polymer sheet in the splitting groove.

[0049] On the other hand, the transverse pressure mark can act as a "flow guide groove". When grouting in the main chamber of the splitting groove, the fluid can flow along the transverse path of the pressure mark to the two extension sections, playing a guiding role and avoiding direct impact on the circular area in the middle, which can prevent the grouting liquid from penetrating into the soil.

[0050] Meanwhile, the concave-convex structure of the pressure mark can disperse the concentrated stress around the splitting groove to multiple pressure mark nodes, reducing the risk of wall collapse caused by excessive local stress.

[0051] More specifically, as shown in Figure 5 , Figure 6 , Figure 7 , Figure 8 , the bottom of the insertion rod 2 is equipped with multiple groups of spray head one 701 and spray head two 702. Spray head one 701 is used to spray curing agent mist to the circular area of the splitting groove, and spray head two 702 is used to spray curing agent mist to the extension end of the splitting groove.

[0052] When the insertion rod 2 is slowly pulled out, if the curing agent mist is continuously sprayed through spray head one 701 and spray head two 702 at this time, the mist will come into contact with the transverse pressure groove, thereby quickly shaping the pressure groove and reducing the risk of natural damage to the pressure groove in the subsequent process due to soil strength problems.

[0053] More specifically, as shown in Figure 3 , Figure 5As shown, the connecting block one 201 is fixedly connected to the inserting rod 2, the connecting block two 301 is fixedly connected to the double-wing fluted plate 3, the connecting block one 201 is rotationally connected in the connecting block two 301, the installing cavity is arranged on the side wall of the inserting rod 2, the electric telescopic rod 302 is fixedly connected in the installing cavity, the telescopic end of the electric telescopic rod 302 is abutted with the double-wing fluted plate 3, the double-wing fluted plate 3 is rotated through the connecting block two 301 by the electric telescopic rod 302, and then the compression strip 4 extrudes the split groove to form a compression groove, and the electromagnet one 501 is installed on the inserting rod 2, and the electromagnet one 501 is used for fixing the double-wing fluted plate 3 on the inserting rod 2.

[0054] At this time, when in use, the double-wing fluted plate 3 can be limited and fixed by the electromagnet one 501, so as to avoid the shaking of the double-wing fluted plate 3 when the split groove is initially inserted into the soil, the instability of the split groove, the skewing, and even the surface pits and depressions, thereby facilitating the pressing of the compression groove.

[0055] Meanwhile, the electric telescopic rod 302 can rotate the double-wing fluted plate 3, so that the compression strip 4 can quickly move to form a plurality of transverse compression grooves in the split groove, thereby facilitating the subsequent use of grouting.

[0056] Another embodiment, as shown in Figure 5 , Figure 6 , Figure 7 , Figure 8 The installing ring 601 is installed on the inserting rod 2, a plurality of installing grooves are arranged on the installing ring 601, the spray head one 701 and the spray head two 702 are installed in the installing grooves, the sliding ring 602 is slidingly connected to the inserting rod 2, the sliding ring 602 is matched with the installing ring 601, and the sliding ring 602 is used for protecting the spray head one 701 and the spray head two 702, the electromagnet two 502 is fixedly connected to the inserting rod 2, the electromagnet two 502 is used for adsorbing and fixing the sliding ring 602, the limiting ring 603 is installed at the bottom of the inserting rod 2, the limiting ring 603 is used for limiting the movement of the sliding ring 602, the liquid inlet pipe 801 is installed in the inserting rod 2, the liquid inlet pipe 801 is used for connecting the curing agent liquid, the connecting pipe 802 is connected to the liquid inlet pipe 801, and the connecting pipe 802 is communicated with the spray head one 701 and the spray head two 702.

[0057] Through the arrangement of the sliding ring 602, the spray head one 701 and the spray head two 702 can be protected, so as to avoid the mud from being drilled into the spray head one 701 and the spray head two 702 in the process of forming the split groove, and the situation that the spray head cannot be used.

[0058] The liquid inlet pipe 801 needs to be connected with the pipeline outside, connected with the curing agent storage device, and provided with a water pump, so that the curing agent is quickly sprayed out through the spray head.

[0059] A dam body plugging method adopts a dam body plugging device, and includes the following operation steps:

[0060] Step one, the dam is geological survey, determine the dam and the information of surrounding soil, and through the radar detector, auxiliary determination of crack position, then according to the information selection splitting position, through the hydraulic splitting machine 1 the plug rod 2 and double wing slotting plate 3 is inserted into the dam, and then form the middle for the circular, both sides have the extension end of splitting slot;

[0061] Step two, through the hydraulic splitting machine 1 slowly pull out the plug rod 2 and double wing slotting plate 3, at this time through the electric telescopic rod 302 makes two groups of double wing slotting plate 3 constantly expand to the outside, through the pressure bar 4 in the splitting slot press out the horizontal pressure groove;

[0062] Step three, through the water pump to extract the solidifying agent liquid in the solidifying agent storage device, make the nozzle one 701, nozzle two 702 constantly spray solidifying agent mist in the splitting slot with pressure groove, quickly to the pressure groove, until the plug rod 2 is completely pulled out;

[0063] Step four, the above steps are repeated until all the splitting slots are prepared;

[0064] Step five, by inserting the slot sealing and grouting pipe and splitting grouting pipe in the splitting slot, a small amount of slurry is injected into the top of the splitting slot through the slot sealing and grouting pipe to seal the hole;

[0065] Step six, grouting at a predetermined depth through the splitting grouting pipe, the slurry reacts and expands, flows along the guide direction of the splitting slot, forms a high polymer sheet, and the sheets in each splitting slot are cross laminated to form an ultra-thin high polymer impermeable layer.

[0066] The transverse pressure groove in the splitting slot can guide the flow of the slurry along the pressure groove to the extension end on both sides, avoid damage caused by direct impact of the slurry on the splitting slot, and reduce material waste caused by too fast medium permeation.

[0067] Meanwhile, the transverse pressure groove can strengthen the splitting slot and disperse the concentrated stress around the splitting slot to multiple pressure mark nodes, reducing the risk of wall collapse caused by excessive local stress.

[0068] The above description is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the preferred embodiment of the present application has been disclosed as above, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above-mentioned technical content without departing from the scope of the technical solution of the present application, and any simple modification, equivalent change and modification of the above-mentioned technical content within the scope of the technical solution of the present application are still within the scope of the present application.

Claims

1. A dam plugging device, comprising a hydraulic wedge machine (1), a plug rod (2), a connecting rod (101) fixedly connected to the telescopic end of the hydraulic wedge machine (1), and the plug rod (2) being threadedly connected to the connecting rod (101), characterized in that, Also include: Two groups of double-wing grooving plates (3) are rotatably connected to the insertion rod (2), and the two groups of double-wing grooving plates (3) are spliced to form a groove plate with a circular middle portion and extending ends on opposite sides. After the spliced double-wing grooving plate (3) is pressed into the soil, a splitting groove is formed in the dam body; The pressing strip (4) is fixedly connected to the bottom of the double-wing grooving plate (3), and the lower end of the double-wing grooving plate (3) is expanded outward to enable the pressing strip (4) to extrude the splitting groove, thereby forming a horizontal pressing groove for guiding the grouting liquid to the extending end of the splitting groove; After the splitting groove is pressed, the insertion rod (2) slowly moves upward, and the lower end gap of the two groups of double-wing grooving plates (3) is expanded outward, so that the pressing strip (4) is pressed on the inner wall of the splitting groove to form a horizontal pressing groove; The insertion rod (2) is fixedly connected with a connecting block one (201), and the double-wing grooving plate (3) is fixedly connected with a connecting block two (301), and the connecting block one (201) is rotatably connected in the connecting block two (301).

2. A damming apparatus according to claim 1, wherein, A plurality of nozzles one (701) and nozzles two (702) are installed on the bottom of the insertion rod (2), the nozzles one (701) are used for spraying curing agent mist to the circular area of the splitting groove, and the nozzles two (702) are used for spraying curing agent mist to the extending end of the splitting groove.

3. A damming apparatus according to claim 2, wherein, An installation cavity is arranged on the side wall of the insertion rod (2), an electric telescopic rod (302) is fixedly connected in the installation cavity, the telescopic end of the electric telescopic rod (302) abuts against the double-wing grooving plate (3), and through the electric telescopic rod (302), the double-wing grooving plate (3) can be rotated through the connecting block two (301), and the pressing strip (4) can extrude the inner wall of the splitting groove to form a pressing groove.

4. A damming apparatus according to claim 3, wherein, An electromagnet one (501) is installed on the insertion rod (2), and the electromagnet one (501) is used for fixing the double-wing grooving plate (3) on the insertion rod (2).

5. A damming apparatus according to claim 4, wherein, An installation ring (601) is installed on the insertion rod (2), a plurality of installation grooves are arranged on the installation ring (601), and the nozzles one (701) and the nozzles two (702) are installed in the installation grooves.

6. A damming apparatus according to claim 5, wherein, A sliding ring (602) is slidably connected to the insertion rod (2), the sliding ring (602) is matched with the installation ring (601), and the sliding ring (602) is used for protecting the nozzles one (701) and the nozzles two (702).

7. A damming apparatus according to claim 6, wherein, An electromagnet two (502) is fixedly connected to the insertion rod (2), the electromagnet two (502) is used for attracting and fixing the sliding ring (602), a limiting ring (603) is installed on the bottom of the insertion rod (2), and the limiting ring (603) is used for limiting the movement of the sliding ring (602).

8. A damming apparatus according to claim 2, wherein, A liquid inlet pipe (801) is installed in the insertion rod (2), the liquid inlet pipe (801) is used for connecting a curing agent liquid, a connecting pipe (802) is connected to the liquid inlet pipe (801), and the connecting pipe (802) is communicated with the nozzles one (701) and the nozzles two (702).

9. A dam plugging method using the dam plugging apparatus of claim 5, characterized by, The following operation steps are included: Step one, the insertion rod (2) and the double-wing grooving plate (3) are inserted into the dam body through the hydraulic splitting machine (1), and then a splitting groove with a circular middle portion and extending ends on both sides is formed; Step two, slowly pull out the inserted rod (2) and double-wing grooved plate (3) by hydraulic splitting machine (1), at this time, the lower end of the two groups of double-wing grooved plate (3) is rotated and unfolded outward by the electric telescopic rod (302), and the transverse pressure groove is pressed out in the splitting groove by the pressing strip (4); Step three, continuously spray curing agent mist in the splitting groove with pressure groove by spray head one (701) and spray head two (702) until the inserted rod (2) is completely pulled out; Step four, repeat the above steps until all the splitting grooves are prepared; Step five, insert the sealing and grouting pipe and the splitting grouting pipe into the splitting groove, and inject a small amount of slurry into the top of the splitting groove through the sealing and grouting pipe to seal the hole; Step six, grouting at a predetermined depth through the splitting grouting pipe, the grouting liquid reacts and expands, flows along the guide direction of the splitting groove, forms a high polymer sheet, and the sheets in each splitting groove are cross-lapped to form an ultra-thin high polymer impermeable layer.

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