A deep foundation pit underground continuous wall seepage repair auxiliary device

Abstract

The application provides a deep foundation pit underground continuous wall seepage repair auxiliary device, and belongs to the technical field of deep foundation pit construction, and is used for assisting in repairing the underground continuous wall body with seepage phenomenon. Since there are many uncertain factors in the construction process of the underground continuous wall and the deep foundation pit, the local seepage of the underground continuous wall may occur in the process of foundation pit excavation or after the completion of excavation. When the wall body is repaired, it is required to drill into the underground continuous wall body obliquely, and the skill level of the operator is extremely high. The seepage repair auxiliary device comprises a base, a rotating part, an extension part and a plurality of drilling parts. The extension part comprises a power assembly and a guide assembly, the drilling parts are correspondingly installed in the guide assembly, under the joint action of the guide assembly and the power assembly, the plurality of drilling parts can simultaneously drill into the seepage area of the underground continuous wall, and the drilling direction can be oblique, so that the skill requirement of the operator is reduced, the drilling quality is improved, and the seepage repair efficiency is also improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of deep foundation pit construction, and particularly relates to a deep foundation pit underground continuous wall seepage repairing auxiliary device. BACKGROUND

[0002] The foundation pit refers to an engineering project with a digging depth exceeding 5 m, or a building basement with more than three floors, or an engineering project with a digging depth not exceeding 5 m but with very complex underground pipeline lines in the construction environment and geological conditions and construction area. The underground continuous wall is a long and narrow deep trench excavated along the axis of a deep excavation engineering project in a slurry support environment. After the deep trench is cleaned, a reinforcement cage is hoisted into the trench, and then a guide pipe method is used to pour concrete underwater to form a unit trench section. The trench section is pushed forward section by section to form a continuous reinforced concrete wall underground. The wall is used for water interception, load bearing and water retaining treatment to ensure that there is no water seepage and accumulation in the pit, and no pit side soil collapse during the excavation of the foundation pit.

[0003] However, in the related art, due to many uncertain factors in the construction process of the underground continuous wall and the deep foundation pit, such as the geological conditions and underground water distribution of the excavation area, the related technical conditions, the characteristics of the concrete material itself and the like, after the construction of the underground continuous wall is completed, local seepage may occur in the underground continuous wall during the excavation process or after the excavation of the foundation pit is completed, or the seepage position may be gradually eroded and expanded, which will cause ground subsidence outside the foundation pit and safety hazards to the surrounding buildings. If not treated in time, as the erosion expands, the seepage on the surface of the underground continuous wall may gradually change into piping, especially when there is confined water, a large amount of water outside the underground continuous wall may flow into the foundation pit, causing an accident.

[0004] In the prior art, if the seepage phenomenon on the surface of the underground continuous wall is found early before it changes into the piping phenomenon, a slurry such as polyurethane, leak stopper or double-quick cement is generally injected into the holes drilled in the local seepage area on the surface of the underground continuous wall to block the seepage. When the local seepage area is large or has a crack shape, a large number of holes need to be drilled, and in order to ensure the blocking quality, the blocking holes should be drilled obliquely into the underground continuous wall body, so that when the blocking agent such as double-quick cement is injected into the blocking hole, it can fully enter the underground continuous wall body and combine with the underground continuous wall body to form a dense whole structure to play a role in blocking the leakage.

[0005] However, in the implementation of the prior art, oblique drilling into the underground continuous wall body requires a very high skill level of the operator, and careless operation may cause local damage to the wall body and aggravate the seepage. In addition, a large number of holes need to be drilled for general seepage repair, which leads to a long repair period and is not conducive to the subsequent engineering, and may bring uncertain risks to the subsequent engineering. SUMMARY

[0006] In view of the above-mentioned disadvantages of the prior art, the purpose of the present application is to provide a deep foundation pit underground continuous wall seepage repair auxiliary device for solving the problems of high skill level requirement of the operation personnel, high manual repair failure rate and long repair period in the repair process when the underground continuous wall appears seepage.

[0007] To achieve the above-mentioned purpose and other related purposes, the present application provides a deep foundation pit underground continuous wall seepage repair auxiliary device for assisting in repairing the underground continuous wall body appearing seepage phenomenon, comprising a base, a rotating part, an extension part and a plurality of drilling parts.

[0008] One side of the base is fixedly attached to the wall surface of the underground continuous wall, the inside of the base is provided with a hollow area and the hollow area exposes the wall surface of the underground continuous wall, the rotating part is installed on the other side of the base through a rotating structure, which is the rotating side, and the rotating part can rotate on the base.

[0009] The rotating part comprises a ring-shaped part and a rotating table, the ring-shaped part is a circular ring, and the rotating table is a long strip shape, both ends of the rotating table are fixedly connected to the ring-shaped part.

[0010] The rotating structure comprises two support seats and the ring-shaped part, the two support seats are fixedly arranged on the opposite sides of the rotating side of the base, the inside of the support seat is provided with a rotating hole, the ring-shaped part is in sliding fit with the rotating hole of the two support seats, and the sliding angle of the ring-shaped part in the support seat can be fixed.

[0011] The extension part comprises a power assembly, a guide assembly and a thrust plate, the power assembly is fixedly installed on the rotating table, the thrust plate can move towards or away from the wall surface of the underground continuous wall under the power action of the power assembly, a plurality of guide assemblies are arranged on both sides of the rotating table and the guide direction is towards the underground continuous wall.

[0012] The drilling part comprises a thrust seat, a drill tail end, a drill body and a drill bit end, one end of the thrust seat is rotatably connected to the drill tail end and the other end is slidably connected to the thrust plate, each drill body is slidably installed on one guide assembly and the drill bit end is towards the underground continuous wall, when the thrust plate moves towards the underground continuous wall, each drilling part moves towards the wall surface of the underground continuous wall and is drilled by the drill bit end.

[0013] Optionally, the support seat comprises a fixed seat and a movable seat, the fixed seat is fixedly connected to the base, the movable seat is connected to the fixed seat through a first bolt set, the rotating hole penetrates through the fixed seat and the movable seat, when the first bolt set is tightened, the ring-shaped part is clamped in the rotating hole and cannot slide.

[0014] Optionally, a bolt hole is arranged on the support seat, the bolt hole penetrates from the surface of the support seat to the rotating hole, when a fastening bolt is screwed from the bolt hole, the ring-shaped part in the rotating hole can be compressed, so as to fix the sliding angle of the ring-shaped part in the support seat.

[0015] Optionally, the telescopic part further comprises a power shaft, a rotating seat and a rotating connecting rod, the power assembly is fixedly installed in the middle of the rotating table and the axis is parallel to the rotating table, two power shafts are arranged on both sides of the power assembly and the axis is parallel to the axis of the power assembly, two rotating seats are connected to the two power shafts respectively, one end of the rotating connecting rod is rotationally connected to the rotating seat, and the other end is rotationally connected to the thrust plate.

[0016] When the power assembly approaches or moves away from the power assembly with the two rotating seats at the same time, the thrust plate approaches or moves away from the underground continuous wall accordingly.

[0017] Optionally, the power assembly is a motor with shafts at both ends, the two power shafts are connected to the output shafts at both ends of the motor through a shaft coupling, the power shaft is a lead screw shaft, the power shaft drives the rotating seat to move linearly through the cooperation of the nut and the rotating seat, and the thread directions of the two nuts are opposite.

[0018] Optionally, the power assembly is two electric cylinders or fluid pressure cylinders arranged back to back, and the power shaft is the output shaft of the electric cylinder or the fluid pressure cylinder.

[0019] Optionally, the guide assembly comprises a guide cylinder, a cylinder seat and a connecting seat, the guide cylinder is hollow and the hollow shape is in sliding fit with the drilling machine body of the drilling part, one end of the cylinder seat is fixedly connected to the guide cylinder, one end of the connecting seat is fixedly connected to the rotating table, the other ends of the cylinder seat and the connecting seat are rotationally connected, and the angle of the guide cylinder relative to the underground continuous wall can be rotationally adjusted.

[0020] Optionally, the connecting seat comprises a male seat and a female seat, the female seat is "concave", the male seat can be inserted into the "concave" shape of the female seat, a through slot-shaped opening is arranged between the male seat and the female seat, and the male seat and the female seat can be locked by a second bolt set when the male seat is inserted into the "concave" shape of the female seat to different depths.

[0021] Optionally, a plurality of fastening holes are arranged on the base, and the base is fixed on the underground continuous wall by a third bolt set through the fastening holes.

[0022] Optionally, the structure further comprises a structure wall and a support structure, one end of the support structure being fixedly connected to the base and the other end being fixedly connected to the structure wall.

[0023] As described above, the deep foundation underground continuous wall seepage repair auxiliary device has at least the following beneficial effects:

[0024] The skill requirement for the operator is reduced, and the repair quality and repair efficiency are improved. Specifically, the seepage repair auxiliary device comprises a base, a rotating part, an extension part, and a plurality of drilling parts. In use, the base is fixedly attached to the seepage area of the underground continuous wall, the rotating part is installed on the other side of the base through a rotating structure, the rotating part can rotate on the base to match the shape of the seepage area, the rotating table of the rotating part is long strip-shaped, the extension part is installed on the rotating table, the extension part comprises a power assembly, a guide assembly, and a thrust plate, each drilling part is correspondingly installed in a guide assembly, and the tail end of the drill is connected to the thrust plate and the drill bit end faces the underground continuous wall. When the power assembly drives the thrust plate to move towards the underground continuous wall, the thrust plate correspondingly pushes the drilling part to drill into the underground continuous wall. Under the action of the guide assembly, the drilling axis of the drilling part is stable and will not deviate, even if the drilling is performed at a large angle inclined to the wall surface of the underground continuous wall, the drill bit end will not slip. In summary, under the joint action of the guide assembly and the power assembly, the plurality of drilling parts can simultaneously drill into the seepage area of the underground continuous wall, and the drilling direction can be inclined, thereby reducing the skill requirement for the operator, improving the drilling quality, and improving the seepage repair efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A schematic diagram of a use scenario of the present application is shown.

[0026] Figure 2 A top axial side view of the present application is shown.

[0027] Figure 3 A top axial side view of the present application is shown.

[0028] Figure 4 A top axial side view of the present application is shown.

[0029] Figure 5 A top axial side view of the present application is shown.

[0030] Figure 6 A top axial side view of the present application is shown. Figure 5A local enlarged view of the middle A.

[0031] Figure 7 A top view of the present application is shown.

[0032] Figure 8 A bottom view of the present application is shown. Figure 7 A B-B sectional view of the middle.

[0033] Figure 9 A C-C sectional view of the middle of the present application is shown. Figure 7

[0034] Figure 10 A bottom axial view of the present application is shown.

[0035] Figure 11 A D-D sectional view of the middle of the present application is shown. Figure 10

[0036] Figure 12 A schematic view of one of the fixing modes of the present application is shown.

[0037] Figure 13 A schematic view of another fixing mode of the present application is shown.

[0038] Figure 14 A schematic view of the sliding block of the present application is shown.

[0039] Figure 15 A schematic view of the underground continuous wall surface repaired with the auxiliary device of the present application is shown.

[0040] Figure 16 A E-E sectional view of the middle is shown. Figure 15

[0041] Wherein: original soil layer 11, excavated soil layer 12, seepage area 131, grouting hole 132, grouting material area 133, underground continuous wall 13, structure wall 14, seepage repair auxiliary device 9, base 1, support seat 10, fixed seat 101, movable seat 102, first bolt group 103, fastening bolt 104, fastening hole 19, third bolt group 18, rotating part 2, rotating side 20, ring member 21, rotating table 22, telescopic part 3, motor 30, shaft coupling 31, nut 32, guide assembly 33, guide cylinder 331, cylinder seat 332, connecting seat 333, male seat 3331, female seat 3332, slot-shaped port 3333, second bolt group 3334, thrust plate 34, power shaft 35, rotating seat 36, rotating connecting rod 37, drilling part 4, thrust seat 40, drill tail end 41, drill body 42, drill bit end 43, support structure 5. DETAILED DESCRIPTION

[0042] ​​​The following embodiments of the application are illustrated by way of example only and other advantages and benefits will become apparent to those skilled in the art from a reading of the following detailed description in conjunction with the drawings.

[0043] Referring to Figures 1 to 16 It should be noted that the structures, proportions, sizes, etc. shown in the drawings of the present specification are merely used to illustrate the content disclosed in the present specification for the understanding and reading of those skilled in the art, and are not used to limit the conditions that the present application can be implemented, and therefore do not have technical significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that can be produced by the present application and the purposes that can be achieved, should still fall within the scope of the technology disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are merely for the purpose of clear understanding and description, and are not used to limit the scope of the present application, and the change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope of the present application.

[0044] The following embodiments are only for illustration. The various embodiments can be combined, which are not limited to the content shown in the following single embodiment.

[0045] Referring to Figures 1-2 The present application provides a deep foundation pit underground continuous wall 13 seepage repair auxiliary device 9, which is used for assisting in repairing the underground continuous wall 13 wall body that appears seepage phenomenon. Figure 1 In the present application, the underground continuous wall 13 is between the original soil layer 11 and the excavated soil layer 12, and plays a role of water interception, load bearing and water retaining during the process of excavating the excavated soil layer 12 to form a deep foundation pit. Due to many uncertain factors in the construction process of the underground continuous wall and the deep foundation pit, during the process of excavating the foundation pit or after the excavation is completed, the underground continuous wall may have a local seepage phenomenon, or even the seepage position is gradually eroded and expanded, which will cause the ground surface settlement outside the foundation pit and cause safety hazards to the surrounding buildings. If not handled in time, with the erosion and expansion, the seepage on the surface of the underground continuous wall may gradually change into piping, especially when there is confined water, a large amount of water outside the underground continuous wall will flow into the foundation pit, causing accidents.

[0046] Referring to Figure 2 The present device includes a base 1, a rotating part 2, an extension part 3, and a plurality of drilling parts 4. In the present application, the use state of the seepage repair auxiliary device 9 is shown in Figure 1, the base 1 is fixed to one side of the wall surface of the underground continuous wall 13, the inside of the base 1 is provided with a hollow area and the hollow area is exposed to the wall surface of the underground continuous wall 13, the rotating part 2 is installed on the other side of the base 1 through a rotating structure, which is the rotating side 20, and the rotating part 2 can rotate on the base 1. The seepage of the underground continuous wall 13 can be a crack type or a local seepage area, and can be distributed obliquely on the wall surface. Through the setting of the rotating structure, when the base 1 is fixedly installed on the wall surface, the rotating table 22 can be appropriately rotated to adjust the angle, so that it is consistent with the distribution direction of the seepage crack or area. In this way, the installation process of the seepage repair auxiliary device 9 can be simplified, and it is not necessary to match the seepage crack or area during installation, and the installation degree of freedom is higher.

[0047] Further, please refer to Figure 3 , the rotating part 2 includes a ring-shaped part 21 and a rotating table 22, the ring-shaped part 21 is a circular ring, and the rotating table 22 is a long strip. Both ends of the rotating table 22 are fixedly connected to the ring-shaped part 21. In practice, the length of the rotating table 22 can be slightly larger than the diameter of the ring-shaped part 21. The rotating table 22 can also be installed on one of the diameters of the ring-shaped part 21, so that the areas on both sides of the rotating table 22 are roughly symmetrical. In this way, enough space can be ensured on both sides for the installation of the drilling part 4. It should be noted that Figure 3 The cross section of the ring-shaped part 21 is circular, but in specific implementation, the cross section can be of other shapes, such as rectangular or I-shaped.

[0048] Specifically, the rotating structure includes two support seats 10 and a ring-shaped part 21. The two support seats 10 are fixedly arranged on opposite sides of the rotating side 20 of the base 1. The support seat 10 is provided with a rotating hole in the inside. The ring-shaped part 21 is in sliding fit with the rotating holes of the two support seats 10. The sliding angle of the ring-shaped part 21 in the support seat 10 can be fixed. When the ring-shaped part 21 slides in the rotating hole of the support seat 10, the entire rotating part 2 will also rotate together. When it is rotated to an angle consistent with the distribution direction of the seepage crack or area, this position needs to be fixed, that is, the sliding of the ring-shaped part 21 is locked, or the sliding function of the entire rotating part 2 is locked. The specific locking implementation will be described below.

[0049] Please refer to Figure 4 , the telescopic part 3 includes a power assembly, a guide assembly 33 and a thrust plate 34. The power assembly is fixedly installed on the rotating table 22. The thrust plate 34 can move towards or away from the wall surface of the underground continuous wall 13 under the action of the power assembly. A plurality of guide assemblies 33 are arranged on both sides of the rotating table 22 and the guide direction is towards the underground continuous wall 13. Please refer to Figure 5 and Figure 6The drilling part 4 comprises a thrust base 40, a drill tail end 41, a drill body 42 and a drill head end 43. The thrust base 40 is rotatably connected to the drill tail end 41 at one end and is slidably connected to the thrust plate 34 at the other end. Each drill body 42 is slidably installed in a guide assembly 33 and the drill head end 43 is directed towards the underground continuous wall 13. When the thrust plate 34 moves towards the underground continuous wall 13, each drilling part 4 moves towards the wall surface of the underground continuous wall 13 and drills by the drill head end 43. During initial commissioning, the drill body 42 needs to be slidably installed in the guide assembly 33, so the drill tail end 41 of the drill body 42 is rotatably connected to the thrust base 40. In different repair scenarios, the angle of the drill hole can be different, so the angle of the guide assembly 33 is also different. In order to ensure that the direction of the drill body 42 matches the angle of the guide assembly 33, the drill tail end 41 is rotatably connected to the thrust plate 34, and the angle can be adjusted.

[0050] In summary, the seepage repair auxiliary device 9 is used to repair the underground continuous wall 13 that has seepage. The reasons for the seepage of the underground continuous wall 13 are various, such as concrete flow around during underground continuous wall pouring, defects caused by too fast concrete pouring speed, wall damage caused by mechanical equipment during foundation pit excavation, etc. During the foundation pit excavation process, if the seepage part cannot be treated in time, after the seepage part forms a leakage channel, it is extremely likely to change into piping, which will seriously endanger the safety of the foundation pit and surrounding buildings.

[0051] In the related art, for the seepage of the gap or hole discovered earlier without obvious water pressure, grouting material can be used for repair. Commonly used grouting materials include quick-setting cement, polyurethane, and leak stopper, etc. In specific implementation, generally, the seepage area is taken as the center, the distribution and shape of the seepage point or joint are arranged, and the grouting holes are arranged to inject the grouting material into the back side of the underground continuous wall or the wall body to achieve the purpose of water interception. Reasonable hole arrangement is an important factor to obtain good leak stopping effect. In order to ensure the leak stopping effect, the grouting material needs to fill the gaps and holes in the underground continuous wall in the seepage area as much as possible. Therefore, the grouting holes are preferably inclined, which can be referred to in Figure 15 and Figure 16 . Figure 15 A crack type local seepage area 131 is shown, and two rows of grouting holes 132 are arranged along the two sides of the cracks of the seepage area 131. Figure 16 Figure 15 ​In the middle E-E cross-sectional view, the orifice of the grouting hole is located at the edge area of the seepage area 131, and the grouting hole 132 is designed obliquely, the grouting hole 132 is directed towards the center of the seepage area 131, two grouting holes 132 in the same height range are oppositely arranged, and the hole bottoms of them are close to the inside of the middle part of the seepage area 131 in the wall body. The grouting material can form a better grouting material area 133 through the two grouting holes 132, and a higher plugging quality is achieved. If the grouting hole is arranged vertically to the wall surface, it is difficult to inject the grouting material into the cracks and holes of the seepage area 131, it is difficult to form a dense grouting material area 133, and the repair quality will be very low.

[0052] In the prior art, the seepage repair work is generally completed by special technical personnel. The main process includes proving the distribution of cracks and holes in the underground continuous wall 13, designing and drilling grouting holes 132, injecting grouting material, etc. The distribution of cracks and holes in the underground continuous wall 13 is proved by special ultrasonic equipment, the grouting material is injected by special grouting machine, and the related parameters such as grouting pressure can be accurately controlled, and the drilling of grouting holes 132 is mainly operated by experienced technical personnel. This brings two main problems: on the one hand, the grouting hole is designed obliquely, even experienced operators also have difficulty in using the drilling machine to drill obliquely on the underground continuous wall 13, and often need to try several times to complete a qualified grouting hole drilling, and during drilling, only the rough position and angle can be maintained, it is difficult to be consistent with the design parameters, and any mistake in the drilling process may cause the drill rod to break, further damage the wall surface, etc. On the other hand, since the seepage area 131 is generally planar or crack-shaped, the number of grouting holes to be drilled is large, which further increases the burden of the operator, and the operator often drills the wall surface into a thousand holes to obtain a few qualified grouting holes. In summary, the current repair method requires high skills of the operator, has low repair efficiency, and the repair quality is difficult to guarantee.

[0053] In the seepage repair auxiliary device 9, the telescopic part 3 and the plurality of drilling parts 4 are installed on the rotating part 2. After the base 1 is fixed on the surface of the underground continuous wall 13, the rotating part 2 can rotate with the telescopic part 3 and the drilling part 4. The rotating table 22 of the rotating part 2 is in a long strip shape, a plurality of drilling parts 4 are installed on both sides, and through the rotation of the rotating part 2, the seepage area or the seepage crack in different directions can be adapted, so that the two rows of drilling parts 4 on both sides of the rotating table 22 are drilled with the seepage area or the seepage crack as the center.

[0054] Meanwhile, in order to solve the difficulty of artificial drilling on the wall surface in the prior art, the drilling part 4 is limited by the guide assembly 33, and the drilling part 4 can only slide in the guide assembly 33 along the guide assembly 33, and the axis of the drilling part 4 will not deviate. The drill tail end 41 of the drilling part 4 is connected to the thrust plate 34, when the thrust plate 34 moves along or away from the underground continuous wall 13, the drilling part 4 will be pushed to move along its axis, so that the underground continuous wall 13 can be drilled. In this embodiment, the angle between the guide assembly 33 and the underground continuous wall 13 can be adjusted, when the axis of the drill body 42 and the drill bit end 43 is not perpendicular to the underground continuous wall 13, in the process of drilling, under the guidance of the guide assembly 33, the drill body 42 and the drill bit end 43 always move along the axis, that is, oblique drilling, so the position of the drill tail end 41 of the drilling part 4 will change relative to the thrust plate 34, therefore, in this embodiment, the drill tail end 41 and the thrust plate 34 have a sliding relationship.

[0055] For details, please refer to Figure 6 and Figure 9 Under the sliding action of the thrust seat 40 and the guiding action of the guide assembly 33, when the thrust plate 34 moves downward, the drill body 42 and the drill bit end 43 will always move along their axes at a set angle, the drilling direction of the drill bit end 43 on the surface of the underground continuous wall 13 is fixed, and the drill bit end 43 will not deviate, which has little technical requirements for the operator, greatly simplifying the drilling process. Meanwhile, the multi-drilling simultaneous drilling method of the device greatly improves the efficiency and accelerates the seepage repair speed, effectively prevents the seepage part from being gradually eroded and expanded, causes the ground surface outside the foundation pit to sink, and causes safety hazards to surrounding buildings.

[0056] For details, please refer to Figure 5The support base 10 comprises a fixed base 101 and a movable base 102. The fixed base 101 is fixedly connected to the base 1, and the movable base 102 is connected to the fixed base 101 through a first bolt set 103. The rotating hole penetrates through the fixed base 101 and the movable base 102. When the first bolt set 103 is tightened, the annular part 21 is clamped in the rotating hole and cannot slide. In this embodiment, in order to ensure the clamping effect, the cross section of the rotating hole between the fixed base 101 and the movable base 102 should be slightly smaller than the cross section of the annular part 21. In this way, when the first bolt set 103 is loose, the annular part 21 can slide normally; when the first bolt set 103 is tightened, the annular part 21 cannot slide. When the seepage repair auxiliary device 9 is used, the distribution of the grouting hole 132 needs to be designed according to the seepage area 131 of the underground continuous wall 13. Then, by rotating the angle of the annular part 21, the drilling positions of the multiple drilling parts 4 can be made to conform to the situation of the seepage area 131. Then, the angle of the annular part 21 is locked, so that the rotating part 2 cannot be randomly rotated during the drilling process, thereby improving the stability of the drilling process.

[0057] Another embodiment of fixing the angle of the annular part 21 is provided in the present embodiment, which can be referred to Figure 4 A bolt hole is arranged on the support base 10, and the bolt hole penetrates from the surface of the support base 10 to the rotating hole. When a fastening bolt 104 is screwed from the bolt hole, the annular part 21 in the rotating hole can be compressed, so as to fix the sliding angle of the annular part 21 in the support base 10. In this way, the support base 10 is an integral whole, and the hole in the support base 10 can be a complete shape without being disconnected and matched with the cross section of the rotating table 22. In the rotating process, it is more smooth, and the annular part 21 and the rotating table 22 are always closely matched with the support base 10. Especially when in the non-locked state, the annular part 21 can only slide in the support base 10, and cannot be taken out of the support base 10, thereby increasing the reliability and operation convenience of the device.

[0058] Another embodiment of fixing the angle of the annular part 21 is provided in the present embodiment, which can be referred to Figure 8The telescopic part 3 further comprises a power assembly, a rotating seat 36 and a rotating connecting rod 37. The power assembly is fixedly installed in the middle of the rotating table 22 and has an axis parallel to the rotating table 22. Two power shafts 35 are respectively arranged on the two sides of the power assembly and have axes parallel to the axis of the power assembly. Two rotating seats 36 are respectively connected to the two power shafts 35. The rotating connecting rod 37 is rotatably connected to the rotating seat 36 at one end and rotatably connected to the thrust plate 34 at the other end. When the power assembly with the two rotating seats 36 simultaneously approaches or moves away from the power assembly, the thrust plate 34 correspondingly approaches or moves away from the underground continuous wall 13. In this embodiment, the thrust plate 34 is connected to the power assembly through the rotating seat 36 and the rotating connecting rod 37, forming an approximately isosceles trapezoidal structure. The rotating angle of the rotating connecting rod 37 is adjusted by adjusting the moving distance of the rotating seat 36, and then the height supported by the thrust plate 34 is adjusted. The tail ends 41 of the plurality of drilling machines are all connected to the thrust plate 34. In this embodiment, the drilling of all the drilling parts 4 is realized under the action of one power assembly, the complexity of the control system is simplified, the cost of the device is reduced, the drilling efficiency is improved, and in particular, the straight line motion parallel to the underground continuous wall 13 is converted into the straight line motion perpendicular to the underground continuous wall 13 by using the rotating seat 36 and the rotating connecting rod 37, so that the power assembly can be transversely arranged on the rotating table 22 without being consistent with the drilling direction, thereby realizing the drilling wall function, reducing the thickness of the seepage repair auxiliary device 9 as a whole, and being conducive to the stability of the entire device when the device is attached to the wall for construction.

[0059] Specifically, the power assembly can be a motor 30 with two output shafts. The two power shafts 35 are connected to the two output shafts of the motor 30 through couplings 31. The power shaft 35 is a lead screw shaft. The power shaft 35 drives the rotating seat 36 to move linearly through the cooperation of the nut 32 and the rotating seat 36. The threads of the two nuts 32 are opposite in direction. In this embodiment, a double-output-shaft motor is used as the power assembly. The two rotating seats 36 are respectively installed on the two output shafts of the motor 30, and the motor 30 itself is located in the middle region. During the process of drilling the wall by the motor driving the thrust plate 34 and then driving the drilling part 4, the reaction force of the wall on the motor 30 will be respectively applied to the two output shafts of the motor 30, and the directions of the reaction forces are opposite, which has the effect of mutual cancellation, thereby enhancing the stability and reliability of the device as a whole and improving the drilling performance. Using the motor 30 as the power source, the drilling speed and depth can be better controlled, and real-time adjustment can be made according to specific conditions, thereby enhancing the practicability of the underground continuous wall 13 under various conditions.

[0060] The embodiment provides another implementation of the power assembly, the power assembly is two electric cylinders or fluid pressure cylinders arranged back to back, and the power shaft 35 is an output shaft of the electric cylinder or the fluid pressure cylinder. In the embodiment, the screw nut transmission mode in the previous embodiment is realized by the straight cylinder. Compared with the mode in which the motor 30 is combined with the screw nut, the structure of the embodiment is further simplified, control is correspondingly simplified, and observation and control of the drilling amount and the drilling speed are more intuitive, and the movement amount of the thrust plate 34 does not need to be controlled according to parameters such as the screw pitch and the motor rotating speed, like in the previous embodiment.

[0061] The embodiment refers to Figure 9 The guide assembly 33 comprises a guide cylinder 331, a cylinder base 332 and a connecting base 333. The guide cylinder 331 is hollow and is in sliding fit with the drilling machine body 42 of the drilling part 4. The cylinder base 332 is fixedly connected to one end of the guide cylinder 331, and the connecting base 333 is fixedly connected to one end of the rotating table 22. The other ends of the cylinder base 332 and the connecting base 333 are rotationally connected, and the angle of the guide cylinder 331 relative to the underground continuous wall 13 can be rotationally adjusted. In the embodiment, the angle adjustment of the guide cylinder 331 relative to the wall surface of the underground continuous wall 13 is realized through the rotational connection between the cylinder base 332 and the connecting base 333. The cylinder base 332 and the connecting base 333 of each guide assembly 33 can have different angles. After the angle adjustment, the rotational relationship between the cylinder base 332 and the connecting base 333 can be locked by screwing a nut, so as to fix the drilling direction of the drilling part 4. In the seepage repair auxiliary device 9 in the embodiment, multiple grouting holes 132 can be drilled at the same time, and the angle of each grouting hole 132 can be independently adjusted. In summary, the applicability of the device is enhanced, and the quality of seepage repair of the device is improved. In particular, two grouting holes 132 located in the same height range can be obliquely drilled into the deep part of the crack of the seepage area 131 from both sides of the wall surface of the seepage area 131, as shown in Figure 16 The grouting hole 132 is obliquely inserted into the seepage area 131, so that the grouting area 133 can be well formed when the plugging slurry is injected, and the cracks and cavities of the seepage area 131 are fully plugged, thereby improving the quality of seepage repair.

[0062] The embodiment refers to Figure 10 and Figure 11The connecting seat 333 includes a male seat 3331 and a female seat 3332. The female seat 3332 is "concave", and the male seat 3331 can be inserted into the "concave" female seat 3332. A through slot-shaped opening 3333 is arranged between the male seat 3331 and the female seat 3332. When the male seat 3331 is inserted into the female seat 3332 to different depths, the male seat 3331 and the female seat 3332 can be locked by the second bolt set 3334. The male seat 3331 is fixedly installed on the rotating table 22. By adjusting the insertion distance between the male seat 3331 and the female seat 3332, the distance between the female seat 3332 and the rotating table 22 can be adjusted, and then the distance between the guide cylinder 331 and the rotating table 22 is adjusted, so that the position of the drilling part 4 and the rotating table 22 can be adjusted accordingly, and then the distance between the two drilling parts 4 on both sides of the rotating table 22 is changed, that is, the distance between the two rows of grouting holes 132 shown in Figure 15 In summary, the previous embodiment can adjust the angle of the drilled grouting hole 132, and the present embodiment can adjust the distance of the drilled grouting hole 132, which effectively improves the adaptability of the device to various seepage areas 131.

[0063] Please refer to Figure 2 The base 1 is provided with a plurality of fastening holes 19, and the base 1 is fixed on the underground continuous wall 13 by the third bolt set 18 through the fastening holes 19. When installing the device on the underground continuous wall 13, a conventional bolt method can be used to first drill a hole vertically on the underground continuous wall 13, and then the seepage repair auxiliary device 9 is fixed on the underground continuous wall 13 by the third bolt set 18. The installation method in the present embodiment needs to drill an installation hole on the underground continuous wall 13, but the installation hole is drilled vertically, and after the installation is completed, the seepage repair auxiliary device 9 drills an inclined grouting hole 132. Compared with the drilling method of manually drilling an inclined grouting hole 132, the present embodiment changes the manual inclined drilling work into straight-line drilling work, which effectively simplifies the seepage repair process of the underground continuous wall 13, reduces the repair difficulty, and improves the repair efficiency.

[0064] Please refer to Figures 12-14If the seepage occurs after the construction of the foundation pit, the seepage repairing auxiliary device 9 can be fixed to the underground continuous wall 13 by the construction wall 14 and the support structure 5. Specifically, the support structure 5 is fixedly connected to the base 1 at one end and fixedly connected to the construction wall 14 at the other end. The support structure 5 can be a common structural member, which can press the seepage repairing auxiliary device 9 on the surface of the underground continuous wall 13 in a cantilevered manner. The advantage of this is that the underground continuous wall 13 does not need to be drilled, thereby avoiding additional damage to the underground continuous wall 13 and avoiding the need to restore the auxiliary installation holes after the completion of the seepage repair. The air pressure cylinder 52 can also be used for support. The air pressure cylinder 52 is used to support the seepage repairing auxiliary device 9 and the construction wall 14 at both ends, and then the air pressure cylinder 52 is appropriately elongated. The vertical force applied by the air pressure cylinder 52 forms the frictional resistance of the seepage repairing auxiliary device 9 sliding downward, thereby firmly fixing the entire seepage repairing auxiliary device 9 between the construction wall 14 and the underground continuous wall 13. The advantage of this mode is that the construction wall 14 and the underground continuous wall 13 do not need to be drilled. Accordingly, when the device is removed, the air pressure cylinder 52 only needs to be slowly depressurized, thereby reducing the destructiveness to the wall and improving the convenience of operation.

[0065] In addition, as shown in Figure 14 the fixed seat 51 is arranged on the four corners of the base 1. The fixed seat 51 is provided with an inner cavity and can cooperate with the output shaft end of the air pressure cylinder 52. In this way, when the air pressure cylinder 52 is used to press the seepage repairing auxiliary device 9 on the underground continuous wall 13, bolts are not needed between the two, but a simple and detachable connection is achieved through the cooperation of the fixed seat 51. This obviously simplifies the implementation process and improves the implementation efficiency.

[0066] Meanwhile, as shown in Figure 14 the annular sliding block 17 is arranged on the frame of the base 1. The plurality of sliding blocks 17 and the frame of the base 1 are combined into a circular ring shape. The bottom of the rotary table 22 is flush with the circular ring-shaped area. During the drilling process of the drilling part 4, the reaction force of the drill bit feeding is transmitted to the rotary table 22, and then transmitted to the wall through the contact between the rotary table 22 and the circular ring-shaped frame on the base 1, thereby enhancing the reliability and stability of the device.

[0067] In summary, the present application effectively overcomes the various shortcomings in the prior art and has a high industrial utilization value.

[0068] The above embodiments only exemplarily illustrate the principles and effects of the present application and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A deep foundation diaphragm wall seepage repair auxiliary device, the seepage repair auxiliary device (9) is used for assisting in repairing the wall body of the diaphragm wall (13) that appears seepage phenomenon, characterized in that, Base (1), rotating part (2), telescopic part (3) and multiple drilling parts (4) are included. One side of the base (1) is fixedly attached to the wall surface of the underground continuous wall (13), the inner side of the base (1) is provided with a hollow area, and the hollow area exposes the wall surface of the underground continuous wall (13), the rotating part (2) is installed on the other side of the base (1) through a rotating structure, which is the rotating side (20), and the rotating part (2) can rotate on the base (1); The rotating part (2) includes a ring-shaped part (21) and a rotating table (22), the ring-shaped part (21) is a circular ring, and the rotating table (22) is a long strip, both ends of the rotating table (22) are fixedly connected to the ring-shaped part (21); The rotating structure includes two support seats (10), the two support seats (10) are fixedly arranged on the opposite sides of the rotating side (20) of the base (1), the support seat (10) is provided with a rotating hole in the inside, the ring-shaped part (21) and the rotating holes of the two support seats (10) are in sliding fit, and the sliding angle of the ring-shaped part (21) in the support seat (10) can be fixed; The telescopic part (3) includes a power assembly, a guide assembly (33) and a thrust plate (34), the power assembly is fixedly installed on the rotating table (22), the thrust plate (34) can move towards or away from the wall surface of the underground continuous wall (13) under the action of the power assembly, and multiple guide assemblies (33) are arranged on both sides of the rotating table (22) and the guide directions are all towards the underground continuous wall (13); The drilling part (4) includes a thrust seat (40), a drill tail end (41), a drill body (42) and a drill bit end (43), one end of the thrust seat (40) is rotatably connected to the drill tail end (41) and the other end is slidably connected to the thrust plate (34), each drill body (42) is slidably installed on a guide assembly (33), and the drill bit end (43) is all towards the underground continuous wall (13), when the thrust plate (34) moves towards the underground continuous wall (13), each drilling part (4) moves towards the wall surface of the underground continuous wall (13) and drills by the drill bit end (43); The guide assembly (33) includes a guide cylinder (331), a cylinder seat (332) and a connecting seat (333), the guide cylinder (331) is hollow and the hollow shape is in sliding fit with the drill body (42) of the drilling part (4), one end of the cylinder seat (332) is fixedly connected to the guide cylinder (331), one end of the connecting seat (333) is fixedly connected to the rotating table (22), the other ends of the cylinder seat (332) and the connecting seat (333) are rotatably connected, and the angle of the guide cylinder (331) relative to the underground continuous wall (13) can be adjusted. The connecting seat (333) comprises a male seat (3331) and a female seat (3332), the female seat (3332) is "concave", the male seat (3331) can be inserted into the "concave" of the female seat (3332), a through slot-shaped opening (3333) is arranged between the male seat (3331) and the female seat (3332), when the male seat (3331) is inserted into the female seat (3332) to different depths, the male seat (3331) and the female seat (3332) can be locked by a second bolt group (3334).

2. The auxiliary device for repairing seepage of a deep foundation pit diaphragm wall according to claim 1, characterized in that, The support seat (10) comprises a fixed seat (101) and a movable seat (102), the fixed seat (101) is fixedly connected to the base (1), the movable seat (102) is connected to the fixed seat (101) through a first bolt group (103), the rotating hole penetrates through the fixed seat (101) and the movable seat (102), and when the first bolt group (103) is tightened, the annular part (21) is clamped in the rotating hole and cannot slide.

3. The auxiliary device for repairing seepage of a deep foundation pit diaphragm wall according to claim 1, characterized in that, A bolt hole is arranged on the support seat (10), the bolt hole penetrates from the surface of the support seat (10) to the rotating hole, when a fastening bolt (104) is screwed from the bolt hole, the annular part (21) in the rotating hole can be compressed, so that the sliding angle of the annular part (21) in the support seat (10) is fixed.

4. The auxiliary device for repairing seepage of a deep foundation pit diaphragm wall according to claim 1, characterized in that, The telescopic part (3) further comprises a power shaft (35), a rotating seat (36) and a rotating connecting rod (37), the power assembly is fixedly installed in the middle of the rotating table (22) and the axis is parallel to the rotating table (22), two power shafts (35) are arranged on the two sides of the power assembly and the axes are parallel to the axis of the power assembly, two rotating seats (36) are connected to the two power shafts (35) respectively, one end of the rotating connecting rod (37) is rotationally connected to the rotating seat (36), and the other end is rotationally connected to the thrust plate (34). When the power assembly approaches or moves away from the power assembly with the two rotating seats (36), the thrust plate (34) approaches or moves away from the underground continuous wall (13) correspondingly.

5. The auxiliary device for repairing the seepage of a deep foundation pit diaphragm wall according to claim 4, characterized in that, The power assembly is a motor (30) with shafts at two ends, the two power shafts (35) are connected to the output shafts at the two ends of the motor (30) through couplings (31), the power shaft (35) is a lead screw shaft, the power shaft (35) drives the rotating seat (36) to move linearly through the cooperation of the nut (32) and the rotating seat (36), and the thread directions of the two nuts (32) are opposite.

6. The auxiliary device for repairing the seepage of a deep foundation pit diaphragm wall according to claim 4, characterized in that, The power assembly is two electric cylinders or fluid pressure cylinders arranged back to back, and the power shaft (35) is an output shaft of the electric cylinder or the fluid pressure cylinder.

7. The auxiliary device for repairing seepage of a deep foundation pit diaphragm wall according to claim 1, characterized in that, A plurality of fastening holes (19) are arranged on the base (1), and the base (1) is fixed on the underground continuous wall (13) by the third bolt group (18) through the fastening holes (19).

8. The auxiliary device for repairing seepage of a deep foundation pit diaphragm wall according to claim 1, characterized in that, The construction wall (14) and the supporting structure (5) are further included, one end of the supporting structure (5) is fixedly connected to the base (1), and the other end is fixedly connected to the construction wall.

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