Capsule grouting device for plugging karst cave in side wall of hole pile

Abstract

The utility model relates to the technical field of civil engineering, in particular to a bag body grouting device and a bag body unit for blocking a karst cave on the side wall of a hole pile, the bag body unit comprises a grouting bag and an adjusting mechanism, the grouting bag is used for filling a karst cave opening, a grouting opening is formed in the back face of the grouting bag, and the adjusting mechanism is used for adjusting the grouting opening. The adjusting mechanism is fixed to the back face of the grouting bag and used for blocking the karst cave opening. The grouting jacking unit comprises a grouting pipe and a jacking mechanism, the grouting pipe is detachably connected to the grouting opening, the jacking mechanism is detachably clamped to the adjusting mechanism, the jacking mechanism is used for being telescopically jacked between the adjusting mechanism and the side wall of the hole pile, and the top end of the adjusting mechanism extends out of the hole pile. The utility model solves the technical problem of high construction cost of the device or method for treating the karst cave on the side wall of the hole pile in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering, in particular to a capsule grouting device for blocking karst caves on the side walls of bored piles. Background Art

[0002] When constructing pile foundations in areas with numerous karst caves, karst caves often appear during the drilling process. The most common occurrence is in the sidewalls of the piles. When the volume of the karst cave is small, the common practice in existing technology is to directly pour concrete to fill the cave. However, in practice, the volume of the karst cave is difficult to estimate, and directly filling the cave with concrete can easily lead to waste of concrete materials. Therefore, when larger karst caves appear on the sidewalls, steel casings are often used for follow-up construction. However, this construction method makes it difficult to control the position of the steel casings. Furthermore, the cost of steel casings is high, and using them to seal karst caves increases construction costs. Utility Model Content

[0003] The purpose of the utility model is to provide a capsule grouting device for plugging karst cavities on the side walls of bored piles, so as to solve the technical problem of high construction cost of devices or methods for treating karst cavities on the side walls of bored piles in the prior art. The specific technical solution is as follows:

[0004] The utility model provides a bladder grouting device for blocking karst caves on the side walls of bored piles, comprising: a bladder unit, the bladder unit comprising a grouting bladder and an adjusting mechanism, the grouting bladder being used to fill the karst cave entrance, the back side of the grouting bladder being provided with a grouting port, the adjusting mechanism being fixed to the back side of the grouting bladder and being used to block the karst cave entrance; a grouting supporting unit, the grouting supporting unit comprising a grouting pipe and a supporting mechanism, the grouting pipe being detachably connected to the grouting port, the grouting pipe being fixed to the supporting mechanism, the supporting mechanism being detachably clamped to the adjusting mechanism, the supporting mechanism being used to retractably support between the adjusting mechanism and the side wall of the bored pile, and the top end of the adjusting mechanism extending out of the bored pile.

[0005] A further improvement of the sac grouting device for sealing the karst caves on the side walls of the bored pile of the present invention is that the supporting mechanism includes an automatic telescopic rod and an adjustment control tube, the automatic telescopic rod is perpendicular to the axis of the bored pile, the adjustment control tube is perpendicular to the automatic telescopic rod, the grouting pipe is fixed to the adjustment control tube, and the adjustment control tube extends out of the bored pile.

[0006] A further improvement of the capsule grouting device for sealing the karst caves on the side walls of bored piles of the present invention is that the automatic telescopic rod is a hydraulic rod, the first end of the hydraulic rod is provided with an adjusting motor, the adjusting motor is fixed to the adjusting control tube, and the adjusting motor is connected to an external power supply.

[0007] A further improvement of the bladder grouting device for plugging karst caves on the side walls of bored piles of the utility model is that a top support plate is provided at the second end of the hydraulic rod.

[0008] A further improvement of the capsule grouting device for sealing the karst cave on the side wall of the bored pile of the present invention is that the adjusting mechanism includes a hinge and a support rod, the hinge is hinged between the grouting capsule and the support rod, the length of the support rod is greater than the height of the karst cave, and the adjusting control tube is detachably clamped to the support rod.

[0009] A further improvement of the bladder grouting device for plugging karst caves on the side walls of bored piles of the present invention is that there are two support rods and two hinged parts, and the two support rods are hinged to the two hinged parts in a one-to-one correspondence.

[0010] A further improvement of the bladder grouting device for sealing karst caves on the side walls of bored piles of the present invention is that a scissors strut is slidably connected between the two support rods, and a fastener for fixing the angle is provided at the middle intersection of the scissors strut.

[0011] A further improvement of the sac grouting device for sealing the karst cave on the side wall of a bored pile of the present invention is that a support plate is fixed on the side of the regulating control tube close to the grouting sac, and a hook for the support plate to be clamped is provided on the side of the support rod away from the grouting sac.

[0012] A further improvement of the sac grouting device for plugging karst caves on the side walls of bored piles of the utility model is that a connecting plate for hinged connection of the hinged part is provided on the back side of the grouting sac.

[0013] A further improvement of the sac grouting device for sealing the karst caves on the side walls of bored piles of the present invention is that a base is provided on the back of the grouting sac, an opening corresponding to the grouting port is provided on the base, and a clamping ring for clamping the grouting pipe is provided on the base, and the clamping ring is located above the opening.

[0014] The application of the technical solution of the utility model has the following beneficial effects:

[0015] The present invention is a sac grouting device for plugging karst caves on the side walls of bored piles. The grouting sac is filled at the cave entrance, so that the regulating mechanism blocks the cave entrance. The grouting support unit and the regulating mechanism are disassembled and reused. This achieves the plugging of the cave entrance while avoiding the large amount of concrete consumed by directly filling the cave and the high material cost of manufacturing steel casings. This solves the technical problem of high construction costs in existing devices or methods for treating karst caves on the side walls of bored piles. The present invention can select grouting sacs of different shapes according to the size of the cave entrance to adapt to different karst cave working conditions, and can be used in both dry-hole pile operations and mud wall protection operations.

[0016] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of the capsule grouting device for plugging the karst caves on the side walls of bored piles according to the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of a capsule unit of a capsule grouting device for plugging karst cavities on the side walls of bored piles according to the present invention;

[0020] Figure 3 This is a schematic diagram of the relationship between the adjustment mechanism and the grouting port positions of the capsule grouting device for plugging the karst cave on the side wall of a bored pile according to the present invention;

[0021] Figure 4 This is a structural diagram of a grouting support unit of a capsule grouting device for plugging karst cavities on the side walls of bored piles according to the present invention;

[0022] Figure 5 This is a schematic diagram of the capsule grouting device for plugging the karst cave on the side wall of a bored pile according to the present invention being placed into the bored pile;

[0023] Figure 6 This is a schematic diagram of the sac grouting device for plugging the karst cave on the side wall of a bored pile according to the present invention during grouting;

[0024] Figure 7 This is a schematic diagram of the sac grouting device for plugging the karst cave on the side wall of a bored pile according to the present invention, when the grouting sac is solidified and the grouting support unit is dismantled;

[0025] Figure 8 The utility model is a schematic diagram of a bladder grouting device for sealing a karst cave on the side wall of a bored pile, in which a bladder unit is left at the karst cave entrance to carry out the lowering of the pile reinforcement cage and the pouring of concrete.

[0026] Among them, A, bored pile; B, side wall cave; 1, capsule unit; 11, grouting capsule; 12, adjustment mechanism; 121, connecting plate; 122, hinge; 123, slide; 124, scissors support; 125, fastener; 126, hook; 13, grouting port; 131, opening; 132, base; 133, snap ring; 14, support rod; 2, grouting top support unit; 21, adjustment control tube; 22, grouting pipe; 23, grouting chuck; 24, support plate; 25, adjustment motor; 26, hydraulic rod; 27, top support plate. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] See also Figures 1 to 8As shown, a capsule grouting device for sealing the caves on the side walls of bored piles, a capsule unit 1, the capsule unit 1 includes a grouting capsule 11 and an adjusting mechanism 12, the grouting capsule 11 is used to fill the cave entrance, a grouting port 13 is provided on the back of the grouting capsule 11, the adjusting mechanism 12 is fixed to the back of the grouting capsule 11 and is used to block the cave entrance; a grouting support unit 2, the grouting support unit 2 includes a grouting pipe 22 and a support mechanism, the grouting pipe 22 is detachably connected to the grouting port 13, the grouting pipe 22 is fixed to the support mechanism, the support mechanism is detachably clamped to the adjusting mechanism 12, the support mechanism is used to retractably support between the adjusting mechanism 12 and the side wall of the bored pile A, and the top of the adjusting mechanism 12 extends out of the bored pile A. In this embodiment, the grouting bag 11 is an arc-shaped rubber bag. The size of the grouting bag 11 can be selected according to the size of the cave to ensure that the grouting bag 11 can be sealed at the entrance of the cave after grouting is completed, preventing the concrete of the pile body from entering the cave.

[0029] Preferably, the supporting mechanism includes an automatic telescopic rod and an adjustment control tube 21. The automatic telescopic rod is perpendicular to the axis of the pile A, and the adjustment control tube 21 is perpendicular to the automatic telescopic rod. The grouting pipe 22 is fixed to the adjustment control tube 21, and the adjustment control tube 21 extends out of the pile A. The grouting pipe 22 is parallel to the adjustment control tube 21. The bottom end of the grouting pipe 22 is provided with a 90° bend to form a grouting chuck 23, and the grouting chuck 23 is provided with an opening for grouting. The position of the entire grouting device can be controlled by the adjustment control tube 21, and the entire grouting supporting unit 2 can be lifted and removed from the pile A after the grouting sac 11 solidifies.

[0030] Preferably, the automatically retractable rod is a hydraulic rod 26, with an adjustment motor 25 mounted at its first end. The adjustment motor 25 is secured to the adjustment control tube 21 and connected to an external power source. The adjustment control tube 21 is hollow, allowing a wire to pass through its center to energize the adjustment motor 25. The adjustment motor 25 drives the hydraulic rod 26, thereby controlling its retraction.

[0031] Preferably, a support plate 27 is provided at the second end of the hydraulic rod 26. This support plate 27 increases the contact area between the end of the hydraulic rod 26 and the sidewall of the pile A, thereby ensuring the stability of the support provided by the hydraulic rod 26. Furthermore, the support plate 27 is an entire curved plate, or the side of the support plate 27 facing away from the hydraulic rod 26 is a curved surface, so that the support plate 27 can fully conform to the sidewall of the pile A, increasing the contact area.

[0032] Preferably, Figure 3As shown, the adjustment mechanism 12 includes a hinged member and a support rod 14. The hinged member is hinged between the grouting bladder 11 and the support rod 14. The length of the support rod 14 is greater than the height of the cave. The adjustment control tube 21 is detachably connected to the support rod 14. Specifically, the hinged member is a connecting rod, and hinges 122 are provided at both ends of the connecting rod, realizing an articulated connection through the hinges 122. The articulated connection method is used to adjust the angle between the support rod 14 and the grouting bladder 11.

[0033] Preferably, the number of the support rods 14 and the number of the hinges are both two, and the two support rods 14 are hinged to the two hinges in a one-to-one correspondence, thereby improving the balance and stability of the entire grouting device.

[0034] Preferably, a scissor brace 124 is slidably connected between the two support rods 14. A fastener 125 for fixing the angle is provided at the central intersection of the scissor braces 124. Specifically, the fastener 125 is a fastening bolt. A threaded hole is provided in the middle of the scissor brace 124 for the fastening bolt to engage. Furthermore, a fastening nut can be screwed into the screw section of the fastening bolt passing through the scissor brace 124 and tightened, thereby fixing the angle of the scissor brace 124. Slide grooves 123 are respectively provided on the inner sides of the two support rods 14. The ends of the scissor braces 124 are respectively slidably mounted in the slide grooves 123, and the ends can slide up and down in the slide grooves 123. The slide grooves 123 can adopt a C-shaped groove structure, and the ends of the scissor braces 124 can adopt a spherical structure, and the spherical end can be slidably mounted in the C-shaped groove.

[0035] Preferably, a support plate 24 is fixed to the side of the adjustment control tube 21 located near the grouting bladder 11, and a hook 126 for engaging the support plate 24 is provided on the side of the support rod 14 located away from the grouting bladder 11. The support plate 24 has flanges on both sides, which can be snapped onto the opposite outer sides of the support rod 14 to limit the position of the grouting support unit 2. The adjustment motor 25 is fixed to the support plate 24 on the side away from the hydraulic rod 26, and the support plate 24 corresponds to the support plate 27.

[0036] Preferably, a connecting plate 121 for the hinged member to be hinged is provided on the back of the grouting bag 11, thereby ensuring the stability of the connection of the adjustment mechanism 12.

[0037] Preferably, a base 132 is provided on the back of the grouting bag 11, and an opening 131 corresponding to the grouting port 13 is provided on the base 132. A clamping ring 133 for clamping the grouting pipe 22 is provided on the base 132, and the clamping ring 133 is located above the opening 131. During grouting, the grouting chuck 23 can be clamped to the clamping ring 133 to ensure the stability of the grouting pipe 22 during grouting and prevent the grouting pipe 22 from falling off.

[0038] The steps for using the bladder grouting device to seal the cavities on the side walls of bored piles are as follows:

[0039] S1, drilling construction of pile A to determine the location of the cave; first, lay out the line to locate the drilling position of pile A, and after the cave appears, confirm the location of the cave on the side of pile A and the size of the cave entrance.

[0040] S2, adjust and install the grouting device, select a suitable grouting bag 11 according to the size of the cave entrance, connect and fix the bag unit 1 and the grouting support unit 2 before lowering the device, hang the enlarged head of the grouting chuck 23 into the clamping ring 133 from the bottom, dock the grouting chuck 23 with the grouting port 13, and hang the support plate 24 into the hook 126 at the same time. The connection and installation of the bag unit 1 and the grouting support unit 2 are completed. At this time, the scissors support 124 is slid in the slide groove 123 to adjust the angle to control the distance between the two support rods 14, to ensure that the support rod 14 can be stuck on the outside of the cave entrance. After the adjustment is completed, the angle is fixed with tightening bolts.

[0041] S3, such as Figure 5 As shown, the construction workers or mechanically grasp the adjustment control tube 21 and the grouting tube 22 and slowly lower the device until the device is aligned with the cave entrance. At this time, the device is translated so that the grouting bag 11 (smaller in volume when not grouting) is placed into the cave entrance. The two support rods 14 are close to the inner wall of the pile A on the side of the cave. The length of the support rods 14 is selected to be greater than the height of the cave, so the support rods 14 will be stuck at the cave entrance and cannot enter.

[0042] S4, such as Figure 6 As shown, the adjusting motor 25 is controlled by adjusting the control tube 21, and the hydraulic rod 26 is controlled by the adjusting motor 25 to extend and lift until the supporting plate 27 supports one side of the inner wall of the pile A. The device supports the other side of the inner wall of the pile A through the force transmission of the supporting plate 27, the hydraulic rod 26, the adjusting motor 25, and the support plate 24.

[0043] S5, perform high-pressure grouting, connect the upper pressure grouting machine through the grouting pipe 22, and inject the grouting material into the grouting bag 11 through the grouting port 13, so that the volume of the grouting bag 11 continues to increase. Because the grouting bag 11 is connected to the support rod 14 outside the cave entrance, and the support rod 14 is stuck outside the cave entrance, the grouting bag 11 will not continue to increase into the cave. Grouting is continued until the grouting bag 11 fills the cave entrance.

[0044] S6, such as Figure 7 As shown, after the grouting material in the grouting bag 11 is initially solidified, the grouting support unit 2 needs to be removed. First, the adjusting motor 25 is controlled to control the hydraulic rod 26 to shorten and retract, and the grouting support unit 2 is lowered as a whole. At this time, the grouting chuck 23 is unhooked and separated from the clamping ring 133133, the support plate 24 is unhooked and separated from the hook 126, the bag unit 1 and the grouting support unit 2 are separated as a whole, and the adjusting control tube 21 and the grouting tube 22 are pulled up to retract the grouting support unit 2 as a whole.

[0045] S7, such as Figure 8 As shown, at this time, the opening of the cave B on the side wall of the bored pile A is completely blocked, and the bored pile A reinforcement cage can be lowered normally and the bored pile A concrete can be poured.

[0046] The present invention is a sac grouting device for plugging karst caves on the side walls of bored piles. The grouting sac 11 is filled at the karst cave entrance, and the regulating mechanism 12 is blocked at the karst cave entrance. The grouting support unit 2 and the regulating mechanism 12 are disassembled and reused. This achieves the plugging of the karst cave entrance while avoiding the consumption of a large amount of concrete by directly filling the karst cave and the high cost of manufacturing steel casing materials. This solves the technical problem of high construction cost of devices or methods for treating karst caves on the side walls of bored piles A in the prior art. The present invention can select grouting sacs 11 of different shapes according to the size of the karst cave entrance to adapt to different karst cave working conditions, and can be used in both dry hole operations and mud wall protection operations of bored piles A.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or 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. A capsule grouting device for plugging cavities on the side walls of bored piles, characterized in that: include: A capsule unit (1), comprising a grouting capsule (11) and an adjusting mechanism (12), wherein the grouting capsule (11) is used to fill the cave entrance, a grouting port (13) is provided on the back of the grouting capsule (11), and the adjusting mechanism (12) is fixed to the back of the grouting capsule (11) and is used to block the cave entrance; A grouting support unit (2) includes a grouting pipe (22) and a support mechanism, wherein the grouting pipe (22) is detachably connected to the grouting port (13), the grouting pipe (22) is fixed to the support mechanism, the support mechanism is detachably connected to the adjustment mechanism (12), and the support mechanism is used to retractably support between the adjustment mechanism (12) and the side wall of the hole pile (A), and the top end of the adjustment mechanism (12) extends out of the hole pile (A).

2. The capsule grouting device for plugging the cavities on the side walls of bored piles according to claim 1, characterized in that: The supporting mechanism comprises an automatic telescopic rod and an adjusting control tube (21), wherein the automatic telescopic rod is perpendicular to the axis of the hole pile (A), the adjusting control tube (21) is perpendicular to the automatic telescopic rod, the grouting pipe (22) is fixed to the adjusting control tube (21), and the adjusting control tube (21) extends out of the hole pile (A).

3. The capsule grouting device for plugging the cavities on the side walls of bored piles according to claim 2, characterized in that: The automatic telescopic rod is a hydraulic rod (26), a first end of the hydraulic rod (26) is provided with an adjustment motor (25), the adjustment motor (25) is fixed to the adjustment control tube (21), and the adjustment motor (25) is connected to an external power supply.

4. The capsule grouting device for plugging the cavities on the side walls of bored piles according to claim 3, characterized in that: The second end of the hydraulic rod (26) is provided with a supporting plate (27).

5. The capsule grouting device for plugging the karst cave on the side wall of a bored pile according to claim 2, characterized in that: The adjustment mechanism (12) comprises a hinge and a support rod (14), wherein the hinge is hinged between the grouting bag (11) and the support rod (14), the length of the support rod (14) is greater than the height of the cave, and the adjustment control tube (21) is detachably connected to the support rod (14).

6. The capsule grouting device for plugging cavities on the side walls of bored piles according to claim 5, characterized in that: The number of the support rods (14) and the number of the hinged parts are both two, and the two support rods (14) are hinged to the two hinged parts in a one-to-one correspondence.

7. The capsule grouting device for plugging cavities on the side walls of bored piles according to claim 6, characterized in that: A scissor strut (124) is slidably connected between the two support rods (14), and a fastener (125) for fixing the angle is provided at the middle intersection of the scissor strut (124).

8. The capsule grouting device for plugging cavities on the side walls of bored piles according to claim 6, characterized in that: A support plate (24) is fixed on the side of the regulating control tube (21) close to the grouting bag (11), and a hook (126) for engaging the support plate (24) is provided on the side of the support rod (14) away from the grouting bag (11).

9. The capsule grouting device for plugging cavities on the side walls of bored piles according to claim 5, characterized in that: The back side of the grouting bag (11) is provided with a connecting plate (121) for the hinged connection of the hinged part.

10. The capsule grouting device for plugging cavities on the side walls of bored piles according to claim 1, characterized in that: The back of the grouting bag (11) is provided with a base (132), the base (132) is provided with an opening (131) corresponding to the grouting port (13), the base (132) is provided with a clamping ring (133) for clamping the grouting pipe (22), and the clamping ring (133) is located above the opening (131).

Images