Internal anchoring type underground engineering plugging device and using method thereof

Abstract

The invention belongs to the technical field of building crack plugging, and particularly discloses an internal anchoring type underground engineering plugging device and a using method thereof.The plugging device comprises a drilling assembly (1), an anchoring assembly (2) and a plugging assembly (3); one end of the drilling assembly (1) is detachably connected with an external power source, and the drilling assembly (1) comprises a drill bit (11) with a hole and a cylindrical drill rod (12) which is fixedly connected with the drill bit (11) and keeps communicating with the drill bit (11); the anchoring assembly (2) is arranged on the outer side of the drilling assembly (1) and used for anchoring the drilling assembly (1) in a water burst crack. The plugging assembly (3) is arranged in the drilling assembly (1) and used for draining water and pouring mortar. According to the plugging device, integrated design is adopted, integrated operation of drilling, drainage, anchoring and grouting in the crack plugging process is achieved, the construction efficiency and the plugging effect are effectively improved, and the waterproof service life and the anti-cracking service life are prolonged.

Description

Technical Field

[0001] The present invention belongs to the technical field of building crack sealing, and more specifically, relates to an internal anchor underground engineering sealing device and a method of using the same. Background Art

[0002] In construction projects, underground structures, as a crucial component of the building fabric, often develop cracks in their walls and floors due to temperature fluctuations, uneven foundation settlement, and poor construction quality control. Once formed, these cracks easily become channels for water to seep through. In conditions of high groundwater levels or frequent rainfall, this can lead to seepage or even flooding. This leakage not only impacts the building's functionality and degrades the indoor environment, but can also lead to safety hazards such as steel corrosion and reduced structural strength. In severe cases, it can even threaten the safety and durability of the entire building. Therefore, effectively addressing the leakage caused by cracks in underground concrete structures has always been a key and challenging issue in the construction industry.

[0003] To address the above-mentioned issues, the solutions commonly used in current engineering practice mainly include grouting and waterproof coating. Grouting involves injecting a chemical slurry into the cracks under pressure, filling it and solidifying it, thereby sealing the cracks and preventing water infiltration. This method is easy to operate and has a certain repair effect on wider cracks, so it was widely adopted in the early days. On the other hand, waterproof coating involves applying a layer of waterproof material to the concrete surface to form an isolation layer to block the water infiltration path. This process is easy to construct and low-cost, and is suitable for surface cracks or minor water seepage. In addition, some projects will also use a combination of these two methods, that is, grouting is first performed, and then waterproof coating is applied to the surface to enhance the overall waterproofing effect.

[0004] However, the above-mentioned existing technologies still have many limitations in actual application, which makes it difficult to fundamentally solve the leakage problem caused by cracks in underground structures. For example, although grouting plugging technology can achieve crack sealing in a short period of time, it is difficult to effectively achieve rapid drainage and pressure reduction when dealing with cracks with large water gushing volume and high water pressure. As a result, the slurry is washed away by the water flow during the grouting process and cannot be fully filled in the deep cracks, resulting in problems such as incomplete sealing and poor sealing. Secondly, the adhesion between the coating and the concrete base is greatly affected by various factors such as construction technology, base cleanliness and humidity. If the adhesion is poor, it will cause the coating to bulge, fall off, or even completely fail, especially in the cracks where there is water gushing, the water flow pressure is large and the permeability is strong. Ordinary waterproof coatings are difficult to form a stable and effective waterproof barrier, and therefore cannot meet the high requirements in actual projects. Summary of the Invention

[0005] In response to the above-mentioned defects or improvement needs of the prior art, the present invention provides an internally anchored underground engineering sealing device and a method of use thereof, which adopts an integrated design to realize the integrated operations of drilling, drainage, anchoring and grouting in the crack sealing process, effectively improving construction efficiency and sealing effect, and extending the waterproof and anti-cracking life.

[0006] In order to achieve the above-mentioned object, the present invention provides an internal anchor underground engineering plugging device, comprising: a drilling assembly, an anchoring assembly and a plugging assembly; One end of the drilling assembly is detachably connected to an external power source, and comprises a drill bit with a hole and a cylindrical drill rod fixedly connected to and in communication with the drill bit; The anchoring assembly is arranged outside the drilling assembly and is used to anchor the drilling assembly in the water gushing crack; The plugging assembly is arranged inside the drilling assembly and is used for drainage and grouting mortar; The drilling assembly, the anchoring assembly and the plugging assembly cooperate to realize the integrated operation of drilling, drainage, anchoring and grouting in the crack plugging process.

[0007] Furthermore, the drilling assembly further comprises a protective cover, which is a cylindrical structure, whose inner diameter is larger than the outer diameter of the drill rod, and is coaxially arranged with the drill rod at the rear end of the drill bit; the inner wall of the protective cover is provided with an internal thread; The drilling assembly also includes a first power joint, which is detachably connected to the drill rod through a threaded structure, and a mounting hole for connecting an output shaft of an external power source is provided on a side away from the drill rod.

[0008] Furthermore, a plurality of first drainage holes are evenly arranged in the area of ​​the drill rod close to the first power joint; A plurality of second drainage holes are evenly arranged in the first power joint. The drainage holes are L-shaped as a whole, with one end opening at the end of the first power joint and the other end opening at the outer wall surface of the first power joint.

[0009] Furthermore, the anchoring assembly includes: a jacking sleeve, an expansion ring and a second power joint; the jacking sleeve is a stepped cylinder with different diameters at both ends, and its small diameter end is inserted into the gap between the protective cover and the drill rod, and is rotatably connected to the internal thread of the inner wall of the protective cover through the external thread provided on its outer surface; the expansion ring is provided in the external thread area of ​​the jacking sleeve, and when the jacking sleeve penetrates into the gap between the protective cover and the drill rod, the jacking sleeve compresses the expansion ring so that the expansion ring expands outward and abuts the wall; the second power joint is a cylindrical structure, one end of which is detachably connected to the first power joint, and the other end is transmission connected to the jacking sleeve through a spline.

[0010] Furthermore, the expansion ring is an annular member made of stainless steel or nitrile rubber, and when stainless steel is used, the number of the expansion rings arranged axially is 2-3 and staggered along the circumferential direction; A plurality of third drainage holes are evenly arranged in an area of ​​the second power joint close to the first power joint.

[0011] Furthermore, the sealing assembly includes: a first support seat, a second support seat, a drainage guide rod, a filter layer screen and a grouting pipe; the first support seat is embedded in the drill rod and close to the drill bit; the second support seat is embedded in the drill rod and close to the drill bit outlet area; one end of the drainage guide rod is arranged in an adapted mounting hole in the first support seat, and the other end thereof is movably connected to the second support seat; the filter layer screen is arranged in an opening of the mounting hole adjacent to the drill bit; one end of the grouting pipe passes through the first support seat and is fixedly connected to the first support seat, and the other end thereof passes through the second support seat and is movably connected to the second support seat.

[0012] Furthermore, the drainage guide rod includes an end head and a rod body, and the rod body is fixedly connected to the middle part of one side of the end head; the diameter of the end head is larger than the diameter of the rod body, and a plurality of fourth drainage through holes are evenly provided thereon along the circumferential direction; the mounting hole is a two-section through hole, which includes a first mounting cavity and a second mounting cavity, the inner diameter of the first mounting cavity is the same as the outer diameter of the end head, and the inner diameter of the second mounting cavity is larger than the outer diameter of the rod body and smaller than the distance from the fourth drainage through hole to the axis of the end head; the end face of the end head is adapted to the end face of the first mounting cavity, and when they are in contact, the fourth drainage through hole is closed.

[0013] Furthermore, the rod body is movably connected to the second support seat through a threaded structure; The grouting pipe is provided with a grouting check valve, and the grouting check valve is arranged between the second support seat and the drill rod opening.

[0014] Furthermore, the drill rod, the rod body and the grouting pipe are all two-section structures, wherein the two sections of the drill rod are connected by threads, the two sections of the rod body and the two sections of the grouting pipe are connected by flexible joints, and a gap is provided between the second support seat and the drill rod to facilitate the removal of the rod body and the grouting pipe.

[0015] Another aspect of the present invention provides a method for using an internal anchor underground engineering plugging device, which is implemented using the above-mentioned plugging device and includes the following steps: S1: After checking that the plugging device is normal, assemble it and transport it to the crack, and connect the plugging device to an external power source through a first power connector; S2: Move the drainage guide rod toward the drill bit to keep the drainage channel inside the drill rod connected, aim the drill bit at the crack, start the external power source, and after the jacking sleeve is completely drilled into the wall, determine whether to continue drilling based on the change in water output; S3: If the water output remains unchanged or increases, continue drilling until the drill rod is nearly immersed in the wall; if the water output decreases, stop drilling; S4: Remove the first power connector, assemble the second power connector at its front end, connect the second power connector to the jacking sleeve, start the external power source to make the jacking sleeve squeeze the expansion ring until the anchor is stable, and then remove the first power connector and the second power connector; S5: moving the drainage guide rod away from the drill bit to close the drainage, and pouring mortar into the crack through the grouting pipe. After that, removing part of the rod body, the grouting pipe and the drill rod, filling the drill hole with mortar and smoothing it; S6: Repeat steps S1 to S5 to complete the sealing of all cracks.

[0016] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art: 1. The plugging device of the present invention drives the drilling assembly into the crack through an external power source, and uses the plugging assembly to guide and drain the water gushing into the crack during this process, effectively reducing the water pressure inside the crack, avoiding the slurry loss or incomplete filling caused by water flow impact in the traditional grouting process, thereby providing good working conditions for subsequent anchoring and grouting; secondly, the anchoring assembly can firmly fix the drilling assembly inside the crack, ensure the stability and sealing during the grouting process, and prevent the slurry from overflowing or the plugging from failing; in addition, the plugging assembly can also be used for later mortar pouring, and the highly fluid and slightly expansive grouting material can be injected into the deep of the crack through its channel to achieve comprehensive sealing from the inside to the outside, thereby enhancing the integrity and durability of the crack repair.

[0017] 2. The sealing device of the present invention can effectively prevent the direct impact of debris and water flow on the external structure of the drill rod during drilling by arranging a protective cover at the end of the drill rod, thereby playing a good protective role; at the same time, the inner wall of the protective cover is provided with an internal thread, which is convenient for detachable connection with the subsequent anchoring component or external structure, thereby enhancing the overall stability and assembly flexibility of the device; secondly, the first power joint is connected to the drill rod through a threaded structure, further improving the connection strength and disassembly convenience between the components, and a mounting hole for connecting the output shaft of the external power source is provided on the side away from the drill rod, so that the power transmission is more efficient and stable, ensuring the continuity and reliability during the drilling process; in addition, a number of drainage holes are evenly distributed on the drill rod and / or the first power joint, which helps to discharge the water and air inside the crack in time during the drilling process, reduce the pressure in the hole, improve the drilling efficiency, and create favorable conditions for subsequent grouting operations.

[0018] 3. The sealing device of the present invention, through the coordinated cooperation of the jacking sleeve, the expansion ring and the second power joint, makes it possible for the expansion ring to be axially compressed and radially expanded during the process of the jacking sleeve penetrating into the crack and tightening, and then closely abuts against the wall surface of the crack inside the wall, thereby realizing efficient positioning and reliable anchoring of the drilling assembly in the crack, thereby ensuring the sealing quality and significantly improving the working performance and adaptability of the overall sealing device; at the same time, the design of the third drainage hole can continue to play a drainage function during the anchoring process, effectively reduce the water pressure inside the crack, improve the anchoring reliability, and provide a good working environment for subsequent grouting; in addition, the second power joint is a key component connecting the drilling assembly and the anchoring assembly, one end of which is connected to the first power joint in a detachable manner, and the other end is clamped with the jacking sleeve, thereby facilitating rapid assembly and disassembly, and ensuring the continuity and stability of power transmission.

[0019] 4. The sealing device of the present invention, through the reasonable layout and ingenious design of the various components in the sealing assembly, can not only effectively reduce water pressure and prevent impurities from clogging in the process of sealing water-gushing cracks, but also evenly pour mortar to achieve complete sealing of the cracks, thereby effectively improving the reliability and durability of the sealing effect, reducing construction difficulty, and improving construction efficiency, and has significant practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the plugging device according to an embodiment of the present invention during drilling; Figure 2 This is a schematic diagram of the structure of Example A of the present invention; Figure 3 This is a structural schematic diagram of the anchoring operation of the plugging device according to an embodiment of the present invention; Figure 4This is a schematic structural diagram of an embodiment of the present invention in which two expansion rings are arranged axially and staggered along the circumferential direction; Figure 5 Schematic diagram of the steps of the method for using the blocking device according to an embodiment of the present invention.

[0021] In all the drawings, the same figure marks represent the same technical features, specifically: 1-drilling assembly, 11-drill bit, 12-drill rod, 121-first drainage hole, 13-protective cover, 14-first power joint, 141-second drainage hole, 2-anchoring assembly, 21-jacking sleeve, 22-expansion ring, 23-second power joint, 231-third drainage hole, 3-sealing assembly, 31-first support seat, 311-mounting hole, 3111-first mounting cavity, 3112-second mounting cavity, 32-second support seat, 33-drainage guide rod, 331-end, 3311-fourth drainage hole, 332-rod body, 34-filter layer filter, 35-grouting pipe, 351-grouting check valve, 36-partition. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0023] Example 1 like Figures 1 to 4As shown, embodiment 1 of the present invention provides an internal anchor underground engineering sealing device, including: a drilling assembly 1, an anchoring assembly 2 and a sealing assembly 3; one end of the drilling assembly 1 is detachably connected to an external power source, and it includes a drill bit 11 with a hole and a cylindrical drill rod 12 fixedly connected to the drill bit 11 and maintained in communication; the anchoring assembly 2 is arranged on the outside of the drilling assembly 1, and is used to anchor the drilling assembly 1 in the water-gushing crack; the sealing assembly 3 is arranged inside the drilling assembly 1, and is used for drainage and mortar pouring. During use, the drilling assembly 1 is driven into the crack by an external power source, and in this process, the plugging assembly 3 is used to guide and drain the water gushing into the crack, effectively reducing the water pressure inside the crack and avoiding the slurry loss or incomplete filling caused by water flow impact in the traditional grouting process, thereby providing good working conditions for subsequent anchoring and grouting; secondly, the anchoring assembly 2 can firmly fix the drilling assembly 1 inside the crack, ensuring stability and sealing during the grouting process, preventing slurry overflow or plugging failure; in addition, the plugging assembly 3 can also be used for later mortar pouring, and through its channel, highly fluid and slightly expansive grouting materials are injected deep into the crack to achieve comprehensive plugging from the inside to the outside, enhancing the integrity and durability of crack repair. The plugging device of the present invention adopts an integrated design to realize the integrated operation of drilling, drainage, anchoring and grouting in the crack plugging process, effectively improving construction efficiency and plugging effect, and extending the waterproof and anti-cracking life.

[0024] like Figures 1 to 3 As shown, the drilling assembly 1 further includes a protective cover 13, which is a cylindrical structure with an inner diameter larger than the outer diameter of the drill rod 12 and is coaxial with the drill rod 12 at the rear end of the drill bit 11; the inner wall of the protective cover 13 is provided with an internal thread.

[0025] The drilling assembly 1 also includes a first power connector 14, which is detachably connected to the drill rod 12. A mounting hole for connecting an output shaft of an external power source is provided on the side of the first power connector 14 facing away from the drill rod 12. Preferably, the first power connector 14 is connected to the drill rod 12 via a threaded structure, facilitating removal of the first power connector 14 after the distal end of the drill rod 11 enters the wall. It should be noted that the external power source output shaft is connected to the mounting hole using a keyway structure to facilitate construction.

[0026] In an optional embodiment, a plurality of fastening screws pass through the side wall of the mounting hole and abut against the output shaft of the external power source, and a rubber pad is provided in the contact area between the fastening screws and the output shaft to ensure a stable connection and avoid damage to the output shaft.

[0027] A plurality of first drainage holes 121 are evenly arranged in an area of ​​the drill rod 12 close to the first power joint 14 .

[0028] In an optional embodiment, a plurality of second drainage holes 141 are evenly provided in the first power joint 14. The drainage holes are L-shaped as a whole, and one end of the drainage hole is opened at the end of the first power joint 14, and the other end of the drainage hole is opened at the outer wall surface of the first power joint 14, so as to further increase the drainage volume and reduce the difficulty of drilling. At the same time, it avoids the problem of poor drainage that may occur when the drill rod 11 penetrates into the wall.

[0029] It can be understood that, through the above design, providing a protective cover at the end of the drill rod 12 can effectively prevent the direct impact of debris and water flow on the external structure of the drill rod 12 during drilling, thereby playing a good protective role; at the same time, the inner wall of the protective cover 13 is provided with an internal thread, which is convenient for realizing detachable connection with the subsequent anchoring assembly 2 or external structure, thereby enhancing the overall stability and assembly flexibility of the device; secondly, the first power joint 14 is connected to the drill rod 12 through a threaded structure, further improving the connection strength and disassembly convenience between the components, and a mounting hole for connecting the output shaft of the external power source is provided on the side away from the drill rod, making the power transmission more efficient and stable, ensuring the continuity and reliability during the drilling process; in addition, a number of drainage holes are evenly distributed on the drill rod 12 and / or the first power joint 14, which helps to discharge the water and air inside the crack in time during the drilling process, reduce the pressure in the hole, improve the drilling efficiency, and create favorable conditions for subsequent grouting operations.

[0030] like Figures 1 to 4 As shown, the anchoring assembly 2 includes: a jacking sleeve 21, an expansion ring 22 and a second power joint 23; the jacking sleeve 21 is a stepped cylinder with different diameters at both ends, and its small diameter end is inserted into the gap between the protective cover 13 and the drill rod 12, and is rotatably connected to the internal thread of the inner wall of the protective cover 13 through the external thread provided on its outer surface; the expansion ring 22 is sleeved on the external thread area of ​​the jacking sleeve 21, and when the jacking sleeve 21 penetrates into the gap between the protective cover 13 and the drill rod 12, the jacking sleeve 21 compresses the expansion ring 22 so that the expansion ring 22 expands outward and abuts the wall; the second power joint 23 is a cylindrical structure, one end of which is detachably connected to the first power joint 14, and the other end is transmission connected to the jacking sleeve 21 through a spline.

[0031] In an optional embodiment, the expansion ring 22 is an annular member made of stainless steel or nitrile rubber. When stainless steel is used, the expansion ring 22 is arranged in axial direction in 2-3 pieces and staggered in the circumferential direction to ensure anchoring and sealing effects.

[0032] In an optional embodiment, the connection method between the second power joint 23 and the first power joint 14 includes: threaded connection, pin connection, clamp connection or flange connection, so as to adapt to different working scenarios.

[0033] A plurality of third drainage holes 231 are evenly disposed in an area of ​​the second power joint 23 close to the first power joint 14 .

[0034] It can be understood that, through the above design, by utilizing the coordinated cooperation of the jacking sleeve 21, the expansion ring 22 and the second power joint 23, when the jacking sleeve 21 penetrates into the crack and is tightened, the expansion ring 22 is subjected to axial compression and radial expansion, thereby tightly abutting the wall surface of the crack inside the wall, thereby achieving efficient positioning and reliable anchoring of the drilling assembly 1 in the crack, thereby ensuring the sealing quality and significantly improving the working performance and adaptability of the overall sealing device; at the same time, the design of the third drainage hole 231 can continue to play a drainage function during the anchoring process, effectively reduce the water pressure inside the crack, improve the anchoring reliability, and provide a good working environment for subsequent grouting; in addition, the second power joint 23 is a key component connecting the drilling assembly 1 and the anchoring assembly 2. One end of the second power joint is connected to the first power joint 14 in a detachable manner, and the other end is clamped with the jacking sleeve 21, thereby facilitating rapid assembly and disassembly, and ensuring the continuity and stability of power transmission.

[0035] like Figures 1 to 3 As shown, the sealing assembly 3 includes: a first support seat 31, a second support seat 32, a drainage guide rod 33, a filter layer screen 34 and a grouting pipe 35; the first support seat 31 is embedded in the drill rod 12 and close to the drill bit 11; the second support seat 32 is embedded in the drill rod 12 and close to the outlet area of ​​the drill bit 11; one end of the drainage guide rod 33 is arranged in an adaptive mounting hole 311 in the first support seat 31, and the other end thereof is movably connected to the second support seat 32; the filter layer screen 34 is arranged in an opening of the mounting hole 311 near the drill bit 11; one end of the grouting pipe 35 passes through the first support seat 31 and is fixedly connected to the first support seat 31, and the other end thereof passes through the second support seat 32 and is movably connected to the second support seat 32.

[0036] Furthermore, the drainage guide rod 33 includes an end head 331 and a rod body 332, and the rod body 332 is fixedly connected to the middle part of one side of the end head 331; the diameter of the end head 331 is larger than the diameter of the rod body 332, and a plurality of fourth drainage through holes 3311 are evenly provided thereon along the circumferential direction; the mounting hole 311 is a two-section through hole, which includes a first mounting cavity 3111 and a second mounting cavity 3112, the inner diameter of the first mounting cavity 3111 is the same as the outer diameter of the end head 331, and the inner diameter of the second mounting cavity 3112 is larger than the outer diameter of the rod body 332 and smaller than the distance from the fourth drainage through hole 3311 to the axis of the end head 331; the end face of the end head 331 is adapted to the end face of the first mounting cavity 3111, and when they are in contact, the fourth drainage through hole 3311 is closed. It should be noted that due to the size difference between the end head 331 and the rod body 332, and between the first mounting cavity 3111 and the second mounting cavity 3112, the connection area between the end head 331 and the rod body 332, and the connection area between the first mounting cavity 3111 and the second mounting cavity 3112 form a surface of a specific shape, namely the aforementioned end face; at the same time, during the sealing process, the contact between the end face of the end head 331 and the end face of the first mounting cavity 3111 can be controlled by rotating the rod body 332 to regulate the closure of the fourth drainage hole 3311, thereby controlling whether the interior of the drill rod 12 is in a connected state.

[0037] In an optional embodiment, the end face of the end head 331 and the end face of the first mounting cavity 3111 are both conical in shape, so as to utilize the concentricity and self-centering capabilities of the conical surface fit, so that the relative position between the end head and the cavity can be automatically corrected during the assembly process, thereby effectively improving the coaxiality and stability of the connection. At the same time, the conical surface contact form can achieve a tighter fit effect. When subjected to axial pressure, a greater radial preload force will be generated between the contact surfaces, thereby greatly enhancing the sealing performance of the connection part, which is particularly suitable for working environments where there is a risk of penetration of liquid or gas media.

[0038] In an optional embodiment, the rod body 332 is movably connected to the second support seat 32 through a threaded structure to ensure that the rod body 332 and the second support seat 32 do not move relative to each other during drainage, and the closing of the fourth drainage hole 3311 can be easily adjusted.

[0039] In an optional embodiment, a partition plate 36 is provided between the second support seat 32 and the drill bit 11 to reduce the entry of debris into the grouting pipe during drilling and drainage, thereby improving the stability of the device.

[0040] In an optional embodiment, a grouting check valve 351 is provided on the grouting pipe 35, and the grouting check valve 351 is arranged between the second support seat 32 and the opening of the drill rod 12, so as to realize the grouting check function and further reduce the entry of debris into the grouting pipe 35, and at the same time, facilitate subsequent recycling and use.

[0041] It can be understood that through the above design, the sealing component 3, through the reasonable layout and ingenious design of each component, can not only effectively reduce the water pressure and prevent impurities from clogging in the process of sealing water-gushing cracks, but also evenly pour mortar to achieve complete sealing of the cracks, thereby effectively improving the reliability and durability of the sealing effect, reducing construction difficulty, and improving construction efficiency, and has significant practical value.

[0042] In an optional embodiment, the drill rod 12, the rod body 332 and the grouting pipe 35 are all two-section structures, wherein the two sections of the drill rod 12 are connected by threads, the two sections of the rod body 332 and the two sections of the grouting pipe 35 are connected by flexible joints, and a gap (not shown) is provided between the second support seat 32 and the drill rod 12 for facilitating the removal of the rod body 332 and the grouting pipe 35, so as to ensure that after the connection between the rod body 332 and the grouting pipe 35 is conveniently released through the gap, the sections of the drill rod 12 can be smoothly removed without interfering with other components, thereby realizing the recycling of some components without affecting the structure of the injected mortar, avoiding material waste and subsequent processing difficulties caused by structural integration in traditional processes, and at the same time, improving the reuse rate of equipment, reducing construction costs, and effectively ensuring the continuity and integrity of mortar filling, helping to form a denser and more uniform sealing body, and improving the overall sealing effect. It should be noted that the segmented area of ​​the above structure is arranged between the first support seat 31 and the second support seat 32, and the distance between it and the drill bit 11 needs to be greater than the distance between the expansion ring 22 and the drill bit 11, so as to ensure the anchoring effect of the anchoring assembly 2.

[0043] Example 2 like Figure 5 As shown, based on Example 1, Example 2 of the present invention provides a method for using an internal anchor underground engineering plugging device, comprising the following steps: S1: After checking that the blocking device is normal, assemble it and transport it to the crack, and connect the blocking device to an external power source through the first power connector 14; S2: Move the drainage guide rod 33 toward the drill bit 11 to keep the drainage channel inside the drill rod 12 connected. Aim the drill bit 11 at the crack, start the external power source, and after the jacking sleeve 21 is completely drilled into the wall, determine whether to continue drilling based on the change in water output. S3: If the water output remains unchanged or increases, continue drilling until the drill rod 12 is nearly immersed in the wall; if the water output decreases, stop drilling; S4: Remove the first power connector 14, assemble the second power connector 23 at its front end, connect the second power connector 23 to the jacking sleeve 21, start the external power source to make the jacking sleeve 21 squeeze the expansion ring 22 until the anchoring is stable, then remove the first power connector 14 and the second power connector 23; S5: Move the drainage guide rod 33 away from the drill bit 11 to close the drainage, and pour mortar into the crack through the grouting pipe 35. After that, remove part of the rod body 332, the grouting pipe 35 and the drill rod 12, fill the mortar into the drill hole and smooth it; S6: Repeat steps S1 to S5 to complete the sealing of all cracks.

[0044] It should be noted that in step S5, large particles of mortar need to be removed to avoid clogging the drill bit 11. Other technical features are the same as those in Example 1 and can achieve the same technical effects, so they will not be described in detail here.

[0045] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0046] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0047] In the present invention, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Those skilled in the art will readily understand that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An internal anchor underground engineering plugging device, characterized in that: include: Drilling assembly (1), anchoring assembly (2) and plugging assembly (3); One end of the drilling assembly (1) is detachably connected to an external power source, and comprises a drill bit (11) with a hole and a cylindrical drill rod (12) fixedly connected to and in communication with the drill bit (11); The anchoring assembly (2) is arranged outside the drilling assembly (1) and is used to anchor the drilling assembly (1) in a water-gushing crack; The plugging assembly (3) is arranged inside the drilling assembly (1) and is used for drainage and grouting mortar; The drilling component (1), the anchoring component (2) and the plugging component (3) cooperate to achieve integrated operations of drilling, drainage, anchoring and grouting during the crack plugging process.

2. The blocking device according to claim 1, characterized in that: The drilling assembly (1) further includes a protective cover (13), which is a cylindrical structure with an inner diameter greater than the outer diameter of the drill rod (12) and is coaxially arranged with the drill rod (12) at the rear end of the drill bit (11); the inner wall of the protective cover (13) is provided with an internal thread; The drilling assembly (1) further comprises a first power joint (14), which is detachably connected to the drill rod (12) via a threaded structure, and a mounting hole for connecting an output shaft of an external power source is provided on a side of the first power joint away from the drill rod (12).

3. The blocking device according to claim 2, characterized in that: A plurality of first drainage through holes (121) are evenly provided in an area of ​​the drill rod (12) close to the first power joint (14); A plurality of second drainage holes (141) are evenly arranged in the first power joint (14). The drainage holes are L-shaped as a whole, with one end opening arranged at the end of the first power joint (14) and the other end opening arranged at the outer wall surface of the first power joint (14).

4. The blocking device according to any one of claim 2, characterized in that: The anchoring assembly (2) comprises: a jacking sleeve (21), an expansion ring (22) and a second power joint (23); the jacking sleeve (21) is a stepped cylinder with different diameters at both ends, the small diameter end of which is inserted into the gap between the protective cover (13) and the drill rod (12), and is rotatably connected to the internal thread of the inner wall of the protective cover (13) through the external thread provided on its outer surface; the expansion ring (22) is sleeved on the external thread area of ​​the jacking sleeve (21), and when the jacking sleeve (21) penetrates into the gap between the protective cover (13) and the drill rod (12), the jacking sleeve (21) compresses the expansion ring (22) so that the expansion ring (22) expands outward and abuts against the wall; the second power joint (23) is a cylindrical structure, one end of which is detachably connected to the first power joint (14), and the other end is transmission-connected to the jacking sleeve (21) through a spline.

5. The blocking device according to claim 4, characterized in that: The expansion ring (22) is an annular member made of stainless steel or nitrile rubber, and when stainless steel is used, the number of the expansion rings arranged axially is 2-3 and the expansion rings are staggered along the circumferential direction; A plurality of third drainage through holes (231) are evenly provided in an area of ​​the second power joint (23) close to the first power joint (14).

6. The blocking device according to any one of claims 1 to 3, characterized in that: The plugging assembly (3) comprises: a first support seat (31), a second support seat (32), a drainage guide rod (33), a filter screen (34) and a grouting pipe (35); the first support seat (31) is embedded in the drill rod (12) and close to the drill bit (11); the second support seat (32) is embedded in the drill rod (12) and close to the outlet area of ​​the drill bit (11); one end of the drainage guide rod (33) is arranged in an adapted mounting hole (311) in the first support seat (31), and the other end thereof is movably connected to the second support seat (32); the filter screen (34) is arranged in an opening of the mounting hole (311) adjacent to the drill bit (11); one end of the grouting pipe (35) passes through the first support seat (31) and is fixedly connected to the first support seat (31), and the other end thereof passes through the second support seat (32) and is movably connected to the second support seat (32).

7. The blocking device according to claim 6, characterized in that: The drainage guide rod (33) comprises an end head (331) and a rod body (332), wherein the rod body (332) is fixedly connected to the middle portion of one side of the end head (331); the diameter of the end head (331) is larger than the diameter of the rod body (332), and a plurality of fourth drainage through holes (3311) are uniformly provided on the end head along the circumferential direction; the mounting hole (311) is a two-stage through hole, comprising a first mounting cavity (3111) and a second mounting cavity (3112); the inner diameter of the first mounting cavity (3111) is the same as the outer diameter of the end head (331), and the inner diameter of the second mounting cavity (3112) is larger than the outer diameter of the rod body (332) and smaller than the distance from the fourth drainage through hole (3311) to the axis of the end head (331); the end face of the end head (331) is adapted to the end face of the first mounting cavity (3111), and when they are in contact, the fourth drainage through hole (3311) is closed.

8. The blocking device according to claim 7, characterized in that: The rod body (332) is movably connected to the second support seat (32) via a threaded structure; A grouting check valve (351) is provided on the grouting pipe (35), and the grouting check valve (351) is provided between the second support seat (32) and the opening of the drill rod (12).

9. The blocking device according to claim 7, characterized in that: The drill rod (12), the rod body (332) and the grouting pipe (35) are all two-section structures, wherein the two sections of the drill rod (12) are connected by threads, the two sections of the rod body (332) and the two sections of the grouting pipe (35) are connected by flexible joints, and a gap is provided between the second support seat (32) and the drill rod (12) to facilitate the removal of the rod body (332) and the grouting pipe (35).

10. A method for using an internal anchor underground engineering plugging device, implemented by using the plugging device according to any one of claims 1 to 9, characterized in that: The steps include: S1: After checking that the blocking device is normal, assemble it and transport it to the crack, and connect the blocking device to an external power source through a first power connector (14); S2: Move the drainage guide rod (33) toward the drill bit (11) to keep the internal drainage channel of the drill rod (12) connected, align the drill bit (11) with the crack, start the external power source, and after the jacking sleeve (21) is completely drilled into the wall, determine whether to continue drilling based on the change in water output; S3: If the water output remains unchanged or increases, continue drilling until the drill rod (12) is nearly immersed in the wall; if the water output decreases, stop drilling; S4: Remove the first power joint (14), assemble the second power joint (23) at its front end, connect the second power joint (23) to the jacking sleeve (21), start the external power source to make the jacking sleeve (21) squeeze the expansion ring (22) until the anchoring is stable, and then remove the first power joint (14) and the second power joint (23); S5: moving the drainage guide rod (33) away from the drill bit (11) to close the drainage, and pouring mortar into the crack through the grouting pipe (35); then, removing part of the rod body (332), the grouting pipe (35) and the drill rod (12), filling the drill hole with mortar and smoothing it; S6: Repeat steps S1 to S5 to complete the sealing of all cracks.

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