A grouting device for complex foundation of construction engineering

Abstract

The application discloses a building engineering complex foundation grouting device, which is used for injecting second slurry into a to-be-grouted area A and comprises a guide device, a rigid drilling mechanism, a flexible drilling mechanism and a grouting assembly. The rigid drilling mechanism can drill a vertical hole, and then the rigid drilling mechanism is taken out and the guide device is lowered into the vertical hole. The guide device can provide drilling guidance for the flexible drilling mechanism, so that the flexible drilling mechanism drills a horizontal hole connected with the vertical hole, and the second slurry is injected into the to-be-grouted area A through the horizontal hole.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of foundation grouting, and particularly relates to a building engineering complex foundation grouting device. BACKGROUND

[0002] In building engineering, the reinforcement of a foundation can be realized by grouting into the foundation, during construction, a connecting hole can be drilled first to communicate a grouting area with the ground, and then a grouting pipe is used to inject grout into the stratum to combine with the soil body to improve the strength of the soil body, at present, in building engineering, effective grouting is often difficult to realize for a complex foundation, for example, a cavity problem occurs in a certain area of the foundation, and buildings exist above the foundation, so that effective grouting and reinforcement of the cavity are difficult to realize, in the prior art, part of the buildings are often removed, and grouting is performed by using a small grouting pipe, and the grouting efficiency and grouting effect are general.

[0003] Therefore, it is necessary to provide a building engineering complex foundation grouting device to solve the problems in the background. SUMMARY

[0004] To achieve the above object, the application provides the following technical scheme: a building engineering complex foundation grouting device for injecting second grout into a grouting area A, comprising a guide, a rigid drilling mechanism, a flexible drilling mechanism and a grouting assembly, wherein the rigid drilling mechanism can drill a vertical hole, then the rigid drilling mechanism is taken out and the guide is lowered into the vertical hole, the guide can provide drilling direction for the flexible drilling mechanism to drill a horizontal hole communicated with the vertical hole, so that the second grout is injected into the grouting area A through the horizontal hole.

[0005] Further, preferably, a top hole of the vertical hole corresponds to a second ground area C, one side of the second ground area C is a first ground area B, and the first ground area B is located directly above the grouting area A.

[0006] Further, preferably, a distance D exists between an end of the horizontal hole far away from the vertical hole and the grouting area A, the grouting assembly can be lowered into the horizontal hole through the guide, the grouting assembly can inject first grout into the horizontal hole, the volume ratio of the first grout to the horizontal hole is 1 / 2, the first grout can form a solidified body, and the flexible drilling mechanism can further modify the solidified body and form a reinforced hole communicated with the grouting area A and the horizontal hole on the inside of the solidified body.

[0007] Further, preferably, a blocking disc is detachably mounted on the end of the grouting assembly, before the first grout forms the solidified body, the blocking disc is blocked on one side of the first grout close to the vertical hole, and the blocking disc pressurizes the first grout to make part of the first grout pass through the horizontal hole.

[0008] Further, as preferred, the grouting assembly comprises a flexible pipe, a first rigid pipe connected with the flexible pipe and a second rigid pipe, the flexible pipe is supplied with grout by an external grout supply device; the second rigid pipe is inwardly contracted at one end close to the first rigid pipe to form a plug for sealing sliding connection with the first rigid pipe, the outer circumference of the first rigid pipe is provided with a plurality of first housings, the outer circumference of the second rigid pipe is provided with a plurality of second housings, the second housings are provided with telescopic rods between the first housings, a plurality of annular capsules are correspondingly arranged on the first housings and the second housings.

[0009] Further, as preferred, the outer surface of the annular capsule is fixed with a plurality of plates, the plates are fixed with wedge-shaped capsules, the outer surface of the wedge-shaped capsules is fixed with resistance plates, the end of the second rigid pipe is detachably mounted with a pump body and a sealing disc, the pump body can control the expansion and contraction of the annular capsule and the wedge-shaped capsule.

[0010] Further, as preferred, the wedge-shaped capsule can make the angle between the resistance plate and the horizontal line be an acute angle after expansion, the surface of the resistance plate is provided with a plurality of hooks towards the vertical hole direction.

[0011] Further, as preferred, the sealing disc comprises a disc bin, one side of the disc bin is fixed with a nut for threaded connection with the grouting assembly, the nut and the disc bin are of plastic material.

[0012] Further, as preferred, the outer circumference of the disc bin is inwardly recessed to form an annular groove, support rings are symmetrically fixed in the annular groove, two support rings jointly support a sealing membrane, a connecting hole is arranged at the position of the sealing membrane of the disc bin, and the sealing membrane is driven to expand and contract by the pump body.

[0013] Further, as preferred, the hydraulic pressure of the second grout in the grouting area A is less than the hydraulic pressure of the first grout after the first grout is pressurized by the sealing disc.

[0014] Compared with the prior art, the building engineering complex foundation grouting device has the following beneficial effects:

[0015] In the present application, the rigid drilling mechanism can construct a vertical hole on one side of the grouting area, then the guide is lowered into the vertical hole, the guide can provide drilling guidance for the flexible drilling mechanism, thereby assisting the flexible drilling mechanism to drill a horizontal hole, the horizontal hole can communicate the grouting area, thereby realizing the yielding of the existing building, and ensuring the grouting efficiency and grouting effect.

[0016] In addition, the grouting assembly can inject the first slurry into the horizontal hole, and the first slurry can form a solidified body, and the reinforced hole with good support and sealing performance can be formed by drilling the solidified body, and the grouting assembly is used to block the reinforced hole, and the blocking effect is better, and the subsequent effective grouting of the to-be-grouted area is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is an implementation schematic view of a building engineering complex foundation grouting device.

[0018] Figure 2 It is a structural schematic view of a to-be-grouted area and a horizontal hole.

[0019] Figure 3 It is a structural schematic view of a to-be-grouted area and a first slurry.

[0020] Figure 4 It is a structural schematic view of a to-be-grouted area and a solidified body.

[0021] Figure 5 It is a structural schematic view of a to-be-grouted area and a reinforced hole.

[0022] Figure 6 It is a structural schematic view of a grouting assembly in a building engineering complex foundation grouting device.

[0023] Figure 7 It is a structural schematic view of a blocking disc in a building engineering complex foundation grouting device.

[0024] In the figure: A, to-be-grouted area; B, first ground surface area; C, second ground surface area; D, spacing; 1, vertical hole; 2, guide; 3, horizontal hole; 4, grouting assembly; 5, first slurry; 6, blocking disc; 7, solidified body; 8, reinforced hole; 9, pump body; 41, first rigid pipe; 42, second rigid pipe; 43, plug; 44, first seat body; 45, second seat body; 46, ring capsule; 47, wedge-shaped capsule; 48, resistance increasing plate; 49, telescopic rod; 61, disc bin; 62, nut; 63, support ring; 64, sealing film; 65, connecting hole. DETAILED DESCRIPTION

[0025] Embodiment: Please refer to Figures 1-7The embodiment of the present application is a building engineering complex foundation grouting device, which is used for injecting second slurry into a to-be-grouted area A, and comprises a guide 2, a rigid drilling mechanism, a flexible drilling mechanism and a grouting assembly 4. The rigid drilling mechanism can drill a vertical hole 1, and then the rigid drilling mechanism is removed and the guide 2 is lowered into the vertical hole 1. The guide 2 can provide drilling guidance for the flexible drilling mechanism to drill a horizontal hole 3 connected to the vertical hole 1, so that the second slurry is injected into the to-be-grouted area A through the horizontal hole 3.

[0026] In addition, the top hole of the vertical hole 1 corresponds to a second ground area C, one side of the second ground area C is a first ground area B, and the first ground area B is located directly above the to-be-grouted area A.

[0027] That is, in the embodiment, the rigid drilling mechanism can construct the vertical hole 1 on one side of the to-be-grouted area, and then the guide 2 is lowered into the vertical hole 1. The guide 2 can provide drilling guidance for the flexible drilling mechanism to drill the horizontal hole, so as to communicate the to-be-grouted area through the horizontal hole, thereby realizing the yielding to the existing building and ensuring the grouting efficiency and effect.

[0028] In addition, the rigid drilling mechanism and the flexible drilling mechanism are existing mechanisms, which will not be described here.

[0029] As a preferred embodiment, the horizontal hole 3 is away from the end of the vertical hole 1, and there is a spacing D between the end of the vertical hole 1 and the to-be-grouted area A. The grouting assembly 4 can be lowered into the horizontal hole 3 through the guide 2. The grouting assembly 4 can inject the first slurry 5 into the horizontal hole 3. The volume ratio of the first slurry 5 to the horizontal hole 3 is 1 / 2. The first slurry 5 can form a solidified body 7. The solidified body 7 is further modified by the flexible drilling mechanism to form a reinforcing hole 8 on the inside of the solidified body 7, which communicates the to-be-grouted area A and the horizontal hole 3.

[0030] It needs to be explained that if the grouting assembly is directly inserted into the to-be-grouted area A through the horizontal hole, it is difficult to realize pressure grouting. If the hydraulic pressure of the second slurry is increased, the second slurry is easy to overflow along the horizontal hole. Since the bearing capacity of the horizontal hole is limited, even if the grouting assembly 4 is used to block the horizontal hole, the blocking effect is general, and the horizontal hole is easy to collapse.

[0031] In the embodiment, the grouting assembly 4 can inject the first slurry 5 into the horizontal hole 3. The first slurry 5 can form a solidified body 7. At this time, the reinforcing hole 8 can be formed by drilling the solidified body. The reinforcing hole 8 has good support and sealing properties. At this time, the grouting assembly 4 is used to block the reinforcing hole, and the blocking effect is better.

[0032] As a preferred embodiment, the second grout hydraulic pressure in the grouting area A is less than the first grout hydraulic pressure after the plugging disc 6 pressurizes the first grout 5.

[0033] As a preferred embodiment, the end of the grouting assembly 4 is detachably mounted with the plugging disc 6, which is plugged to the side of the first grout 5 close to the vertical hole 1 before the first grout forms the solid 7, and the plugging disc 6 pressurizes the first grout 5, so that part of the first grout 5 passes through the horizontal hole 3 radially and axially.

[0034] Further enhance the support performance of the reinforced hole, and to some extent, reduce the subsequent second grout in the grouting area from the outside of the reinforced hole overflow.

[0035] Specifically, as Figure 6 , the grouting assembly 4 includes a flexible pipe, a first rigid pipe 41 connected to the flexible pipe, and a second rigid pipe 42, the flexible pipe is supplied by the external grouting device; the second rigid pipe 42 is inwardly retracted at one end close to the first rigid pipe 41 to form a plug 43 to be connected with the first rigid pipe 41 in sealed sliding manner, the outer circumference of the first rigid pipe 41 is provided with a plurality of first seats 44, the outer circumference of the second rigid pipe 42 is provided with a plurality of second seats 45, the second seats 45 and the first seats 44 are provided with an extension rod 49, and a plurality of ring capsules 46 are correspondingly provided on the first seats 44 and the second seats 45.

[0036] When the plugging disc 6 is driven by the grouting assembly 4 to pressurize the first grout 5, the ring capsule on the first seat is first inflated to lock the first rigid pipe 41 in the reinforced hole, and the ring capsule on the second seat is deflated, then the extension rod 49 is elongated to drive the second rigid pipe and the plugging disc 6 to move towards the first grout 5, then the ring capsule on the second seat is inflated and locked in the reinforced hole, and the ring capsule on the first seat is deflated, then the extension rod is reset to complete a feeding and pressurizing process.

[0037] As a preferred embodiment, the outer surface of the ring capsule 46 is fixed with a plurality of plates, the plates are fixed with wedge-shaped capsules 47, the outer surface of the wedge-shaped capsules 47 is fixed with resistance plates 48, the end of the second rigid pipe 42 is detachably mounted with the pump body 9 and the plugging disc 6, and the pump body 9 can control the expansion and contraction of the ring capsule 46 and the wedge-shaped capsule 47.

[0038] As a preferred embodiment, the wedge-shaped capsule 47 can make the included angle between the resistance plate 48 and the horizontal line be an acute angle after expansion, and the surface of the resistance plate 48 is provided with a plurality of hook bodies towards the vertical hole 1.

[0039] In this embodiment, as Figure 7The sealing disc 6 comprises a disc bin 61, and a nut 62 is fixed on one side of the disc bin 61 and used for being screwed with the grouting assembly 4, and the nut and the disc bin are made of plastic material.

[0040] After the first slurry is pressurized by the sealing disc 6, the sealing disc 6 can be fixed on one side of the first slurry with the solidification of the first slurry, then the grouting assembly 4 is withdrawn, and finally the sealing disc 6 and the solidified body 7 are drilled by the flexible drilling mechanism.

[0041] As a preferred embodiment, the outer circumference of the disc bin 61 is inwardly recessed to form an annular groove, and a supporting ring 63 is symmetrically fixed in the annular groove, two supporting rings 63 jointly support a connecting sealing film 64, and the disc bin 61 is also provided with a connecting hole corresponding to the position of the sealing film 64, and the sealing film 64 is driven by the pump body to expand and contract.

[0042] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A construction engineering complex foundation grouting device for injecting a second slurry into a to-be-grouted area A, characterized in that: The device comprises a guide (2), a rigid drilling mechanism, a flexible drilling mechanism and a grouting assembly (4), wherein the rigid drilling mechanism can drill a vertical hole (1), then the rigid drilling mechanism is removed and the guide (2) is lowered into the vertical hole (1), the guide (2) can provide drilling direction for the flexible drilling mechanism to drill a horizontal hole (3) connected to the vertical hole (1), so that the second slurry is injected into the to-be-grouted area A through the horizontal hole (3); The top of the vertical hole (1) corresponds to a second ground area C, one side of the second ground area C is a first ground area B, and the first ground area B is directly above the to-be-grouted area A; The end of the horizontal hole (3) away from the vertical hole (1) has a spacing D from the to-be-grouted area A, and the grouting assembly (4) can be lowered into the horizontal hole (3) through the guide (2), the grouting assembly (4) can inject the first slurry (5) into the horizontal hole (3), the volume ratio of the first slurry (5) to the horizontal hole (3) is 1 / 2, the first slurry (5) can form a solidified body (7), and the solidified body (7) is further modified by the flexible drilling mechanism to form a reinforced hole (8) on the inside of the solidified body (7) to connect the to-be-grouted area A and the horizontal hole (3); The grouting assembly (4) comprises a flexible pipe, a first rigid pipe (41) connected to the flexible pipe, and a second rigid pipe (42), the flexible pipe is supplied with slurry by an external slurry supply device; the second rigid pipe (42) is inwardly contracted at one end near the first rigid pipe (41) to form a plug (43) to be sealingly and slidably connected to the first rigid pipe (41), a plurality of first seats (44) are arranged on the outer circumference of the first rigid pipe (41), a plurality of second seats (45) are arranged on the outer circumference of the second rigid pipe (42), and a plurality of telescopic rods (49) are arranged between the second seats (45) and the first seats (44), a plurality of ring capsules (46) are correspondingly arranged on the first seats (44) and the second seats (45).

2. The construction engineering complex foundation grouting device according to claim 1, characterized in that: The end of the grouting assembly (4) is detachably mounted with a blocking disc (6), before the first slurry forms a solidified body, the blocking disc (6) blocks one side of the first slurry (5) near the vertical hole, and the blocking disc (6) pressurizes the first slurry (5) to make part of the first slurry (5) pass through the horizontal hole.

3. The building engineering complex foundation grouting device according to claim 1, characterized in that: The outer surface of the ring capsule (46) is fixed with a plurality of plates, the plates are fixed with wedge-shaped capsules (47), the outer surface of the wedge-shaped capsules (47) is fixed with resistance increasing plates (48), the end of the second rigid pipe (42) is detachably mounted with a pump body (9) and a blocking disc (6), the pump body (9) can control the expansion and contraction of the ring capsule (46) and the wedge-shaped capsule (47).

4. The construction engineering complex foundation grouting device according to claim 3, characterized in that: The wedge-shaped capsule (47) can make the included angle between the resistance increasing plate (48) and the horizontal line be an acute angle after expansion, and the surface of the resistance increasing plate (48) is provided with a plurality of hooks towards the vertical hole (1).

5. The construction engineering complex foundation grouting device according to claim 3, characterized in that: The sealing disc (6) comprises a disc bin (61), one side of the disc bin (61) is fixed with a nut (62) for being threadedly connected with the grouting assembly (4), and the nut and the disc bin are made of plastic material.

6. The construction engineering complex foundation grouting device according to claim 5, characterized in that: The outer periphery of the disc bin (61) is inwardly recessed to form an annular groove, and support rings (63) are symmetrically fixed in the annular groove, the two support rings (63) jointly support a connecting sealing membrane (64), and the disc bin (61) is also provided with a connecting hole corresponding to the position of the sealing membrane (64), and the sealing membrane (64) is driven to expand and shrink by the pump body.

7. The building engineering complex foundation grouting device according to claim 2, characterized in that: The second grout hydraulic pressure in the to-be-grouted area A is less than the first grout hydraulic pressure after the first grout (5) is pressurized by the sealing disc (6).

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