Construction device of deep foundation pit high confined water dewatering well
The deep foundation high-pressure water drainage well construction device addresses uneven filling by using a distributed slurry injection system with an elevation mechanism to enhance stability and reduce surges, ensuring uniform filling and improved anti-seepage performance.
Patent Information
- Application Number
- CN202421692968.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-07-17
AI Technical Summary
In the prior art, the well walls and the outer walls of the deep foundation pit high-pressure water precipitation well are not uniformly filled with the wellbore outer wall, which can easily lead to pit bottom bursts and sand surge accidents, causing economic losses.
The grouting assembly and the lifting assembly are adopted, including multiple slurry injection tubes and lifting drive members. The lifting assembly drives the slurry injection tube to move along the well wall and the outer wall of the wellbore to ensure that the slurry is uniformly injected into the clay ball backfill section and achieve uniform filling of the outer wall of the wellbore.
It improves the permeability of the outer wall of the wellbore, reduces the risk of bursting at the bottom of the pit, ensures the stability of the wellbore, avoids the problem of clogging of the slurry injection pipe, and improves the safety and efficiency of construction.
Smart Images
Figure CN223103688U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of foundation pit engineering, in particular to a construction device for a deep foundation pit high-confined water dewatering well. Background Technique
[0002] During the foundation pit excavation process, as the excavation depth increases, the pressure of the overlying soil layer gradually decreases, while the jacking force of the confined water relatively increases. The confined water is prone to gushing out from the bottom of the foundation pit, posing a great threat to the stability of the foundation pit and construction safety. To prevent such problems, dewatering wells are often used to reduce the water head of the confined water to solve the problem of anti-gushing of the soil at the bottom of the foundation pit. However, in actual projects, due to the difficult guarantee of the construction quality of the well wall of the confined water dewatering well and prominent problems such as non-dense filling of the well wall, the confined water often gushes up along the well wall of the dewatering well, resulting in accidents such as foundation pit water gushing and sand gushing.
[0003] Currently, the method for filling and reinforcing the outer wall of the dewatering well shaft is usually to grout between the well wall of the dewatering well and the outer wall of the shaft. Through the reserved grouting pipe and the slurry injection pipe sleeved on the outer wall of the shaft, the grouting pipe and the slurry injection pipe are connected, and both the grouting pipe and the slurry injection pipe are pre-fixed on the outer wall of the shaft and penetrate into the formation simultaneously with the shaft. The slurry is discharged through the slurry outlet of the slurry injection pipe to fill and reinforce the outer wall of the shaft. However, since both the grouting pipe and the slurry injection pipe are in fixed positions, when the slurry enters the clay ball backfill section, due to the easy combination and curing of the slurry and the clay ball backfill section, the clay balls at the position of the clay ball backfill section closer to the slurry injection pipe are preferentially cured and blocked the slurry outlet. As a result, it is difficult for the slurry to enter the clay ball backfill section farther from the slurry injection pipe, which may lead to uneven filling and reinforcement between the well wall of the dewatering well and the outer wall of the shaft, and still easily cause problems such as bottom gushing of the dewatering well, resulting in accidents such as foundation pit water gushing and sand gushing, bringing huge economic losses. Content of the Utility Model
[0004] The purpose of the utility model is to provide a construction device for a deep foundation pit high-confined water dewatering well, which can uniformly pour the slurry into the clay ball backfill section to ensure that the outer wall of the shaft and the well wall of the dewatering well can be uniformly filled and keep the shaft stable.
[0005] To achieve this purpose, the utility model adopts the following technical solutions:
[0006] A construction device for a deep foundation pit high-confined water dewatering well, used for reinforcing a shaft located in the dewatering well, wherein the construction device for the deep foundation pit high-confined water dewatering well includes:
[0007] A grouting assembly, the grouting assembly includes a plurality of slurry injection pipes, and the plurality of slurry injection pipes are circumferentially spaced along the well wall of the dewatering well;
[0008] Lifting assembly, the lifting assembly includes a lifting driving member, an output end of the lifting driving member is connected to the slurry injection pipe, the lifting driving member is capable of driving the slurry injection pipe to move along the depth direction of the dewatering well between the well wall of the dewatering well and the outer wall of the shaft, and the slurry injection pipe is configured to inject slurry between the well wall of the dewatering well and the outer wall of the shaft.
[0009] Further, the grouting assembly further includes a grouting pipe and a slurry distributing member, a first end of the grouting pipe is connected to a slurry source, the slurry distributing member is provided with an input port and a plurality of output ports, the input port of the slurry distributing member is communicated with the plurality of output ports of the slurry distributing member, the input port of the slurry distributing member is communicated with a second end of the grouting pipe, and the plurality of output ports of the slurry distributing member are respectively and correspondingly communicated with the plurality of slurry injection pipes.
[0010] Further, each of the slurry injection pipes is composed of a plurality of connecting pipes and at least one slurry outlet pipe, the plurality of connecting pipes are detachably connected in series in sequence, a first end of the connected connecting pipes is connected to the output port of the slurry distributing member, a second end of the connected connecting pipes is detachably connected in series with at least one of the slurry outlet pipes in sequence, and the slurry outlet pipe is provided with a plurality of slurry outlet holes at intervals along its length direction.
[0011] Further, the lifting assembly further includes a hoisting member and at least one towing rope, the hoisting member is arranged above the wellhead of the dewatering well, the lifting driving member is arranged on the hoisting member, a first end of the towing rope is connected to the output end of the lifting driving member, and a second end of the towing rope is connected to the slurry distributing member and / or the slurry injection pipe.
[0012] Further, the lifting assembly further includes a rotating shaft and at least one wire reel, the rotating shaft is rotatably arranged on the hoisting member, the lifting driving member is capable of controlling the rotation of the rotating shaft, the wire reel is arranged on the rotating shaft, and a first end of the towing rope is wound and connected to the wire reel.
[0013] Further, there are two wire reels, the two wire reels are arranged on the rotating shaft at intervals, there are two towing ropes, first ends of the two towing ropes are respectively wound and connected to the two wire reels, and second ends of the two towing ropes are respectively symmetrically connected to the slurry distributing member along the center axis of the slurry distributing member.
[0014] Further, two connecting rods are arranged on the slurry distributing member, first ends of the two connecting rods are respectively symmetrically connected to the slurry distributing member along the center axis of the slurry distributing member, second ends of the two connecting rods respectively protrude from the outer edge of the slurry distributing member, and second ends of the two towing ropes are respectively connected to second ends of the two connecting rods.
[0015] Further, the grouting assembly further includes a guiding member, which includes a first guiding portion and a second guiding portion. The first guiding portion is disposed on the slurry dividing member, and the second guiding portion is disposed on the hoisting member. The first guiding portion and the second guiding portion cooperate with each other to enable the slurry injection pipe to move along the depth direction of the dewatering well.
[0016] Further, the first guiding portion is a limiting protrusion, and the second guiding portion is a limiting groove extending along the depth direction of the dewatering well.
[0017] Further, the first guiding portion is a pulley, and the second guiding portion is a slide rail extending along the depth direction of the dewatering well.
[0018] Advantages of the present utility model:
[0019] The present utility model provides a construction device for a deep foundation pit high-confined water dewatering well, including a grouting assembly and a lifting assembly. The grouting assembly includes a plurality of slurry injection pipes, which are circumferentially spaced apart along the well wall of the dewatering well. The lifting assembly includes a lifting driving member, and the output end of the lifting driving member is connected to the grouting assembly, capable of driving the slurry injection pipe to move along the depth direction of the dewatering well between the well wall of the dewatering well and the outer wall of the wellbore. The slurry injection pipe is configured to grout between the well wall of the dewatering well and the outer wall of the wellbore. Through the lifting assembly, the slurry injection pipe can be moved along the depth direction of the dewatering well, effectively avoiding the problem that the slurry injected by the slurry injection pipe preferentially combines and solidifies with the clay balls near the slurry injection pipe in the clay ball backfill section, resulting in clogging of the grouting outlet, and further affecting the normal operation of the output end of the slurry injection pipe. At the same time, by driving the grouting assembly to gradually rise through the lifting assembly, the slurry injection pipe can grout different height clay ball backfill sections, enabling the slurry to be evenly injected into the clay ball backfill section. The clay balls in the clay ball backfill section can be completely solidified by the slurry, ensuring that the space between the outer wall of the wellbore and the well wall of the dewatering well can be evenly filled, ensuring the stability of the wellbore, thereby improving the impermeability of the outer wall of the wellbore and reducing the risk of bottom heave in the dewatering well. Description of the Drawings
[0020] Figure 1 is a schematic structural view of the construction device for the deep foundation pit high-confined water dewatering well of the present utility model;
[0021] Figure 2 is a schematic structural view of the grouting assembly in the present utility model;
[0022] Figure 3 is a schematic structural view of the slurry injection pipe in the present utility model;
[0023] Figure 4It is a schematic diagram of the filling section of a precipitation well in the prior art.
[0024] In the figure:
[0025] 100, wellbore;
[0026] 1, grouting assembly; 11, slurry injection pipe; 111, connecting pipe; 112, slurry outlet pipe; 113, slurry outlet hole; 12, grouting pipe; 13, slurry distributing part; 14, guiding part; 141, first guiding part; 142, second guiding part; 15, connecting rod; 16, lifting ring; 17, connecting plate;
[0027] 2, lifting assembly; 21, lifting driving part; 22, hoisting part; 23, towing rope; 24, rotating shaft; 25, wire reel; 26, bracket;
[0028] 3, cover plate; 31, positioning hole; 4, ordinary backfill section; 5, clay ball backfill section; 6, permeable backfill section. Detailed implementation mode
[0029] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the sake of description, only parts related to the present utility model are shown in the drawings, rather than all the structures.
[0030] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0031] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact of the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above the top", and "on the top" of the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "below the bottom", and "under the bottom" of the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature is at a lower horizontal height than the second feature.
[0032] In the description of this embodiment, the orientation or positional relationship terms such as "upper", "lower", "left", "right", etc. are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0033] Please refer to Figure 4 As shown, generally, a wellbore 100 is provided in a deep foundation pit high-confined water dewatering well. Between the well wall of the dewatering well and the outer wall of the wellbore 100, a permeable backfill section 6, a clay ball backfill section 5, and a general backfill section 4 are filled in sequence from bottom to top. Among them, the confined water is drained into the dewatering well through the permeable backfill section 6. By grouting and filling the clay ball backfill section 5 between the well wall of the dewatering well and the outer wall of the wellbore 100, and using the characteristic that the slurry and the clay balls can be combined and solidified with each other, the outer wall of the wellbore 100 is reinforced, and the impermeability of the outer wall of the wellbore 100 is improved to prevent the problem of bottom heave of the dewatering well pit.
[0034] As Figures 1 to 3As shown in the figure, the present application provides a construction device for a deep foundation pit high-confined water dewatering well, which is used to reinforce the shaft 100 located in the dewatering well to ensure the stability of the shaft 100 in the dewatering well. The construction device for the deep foundation pit high-confined water dewatering well includes a grouting assembly 1 and a lifting assembly 2. The grouting assembly 1 includes a plurality of slurry injection pipes 11, and the plurality of slurry injection pipes 11 are circumferentially spaced along the well wall of the dewatering well. The lifting assembly 2 includes a lifting driving member 21, and the output end of the lifting driving member 21 is connected to the grouting assembly 1, and can drive the slurry injection pipes 11 to move along the depth direction of the dewatering well between the well wall of the dewatering well and the outer wall of the shaft 100. The slurry injection pipes 11 are configured to inject slurry between the well wall of the dewatering well and the outer wall of the shaft 100. Through the lifting assembly 2, the slurry injection pipes 11 can be moved along the depth direction of the dewatering well, effectively avoiding the problem that the slurry injected by the slurry injection pipes 11 preferentially combines and solidifies with the clay balls near the slurry injection pipes 11 in the clay ball backfill section 5, resulting in the blockage of the grouting outlet, and further affecting the normal operation of the output end of the slurry injection pipes 11. At the same time, by driving the grouting assembly 1 to gradually rise through the lifting assembly 2, the slurry injection pipes 11 can perform grouting work on the clay ball backfill sections 5 at different heights, so that the slurry can be evenly injected into the clay ball backfill section 5, and the clay balls in the clay ball backfill section 5 can be completely solidified by the slurry, ensuring that the space between the outer wall of the shaft 100 and the well wall of the dewatering well can be evenly filled, ensuring the stability of the shaft 100, thereby improving the stability and impermeability of the filling and reinforcement of the outer wall of the shaft 100, and reducing the risk of bottom heave on the outer wall of the shaft 100. Further, the plurality of slurry injection pipes 11 can be evenly circumferentially spaced along the well wall of the dewatering well, so as to ensure that the slurry can be evenly injected between the well wall of the dewatering well and the outer wall of the shaft 100 through the evenly spaced slurry injection pipes 11, ensuring that each position between the well wall of the dewatering well and the outer wall of the shaft 100 can be filled with the slurry.
[0035] As Figure 2As shown, in some embodiments, the grouting assembly 1 further includes a grouting pipe 12 and a slurry distributing member 13. The first end of the grouting pipe 12 is connected to a slurry source. The slurry distributing member 13 is provided with an input port and a plurality of output ports. The input port of the slurry distributing member 13 is communicated with the plurality of output ports of the slurry distributing member 13. The input port of the slurry distributing member 13 is communicated with the second end of the grouting pipe 12. The plurality of output ports of the slurry distributing member 13 are respectively and correspondingly communicated with a plurality of slurry injection pipes 11. The slurry distributing member 13 can evenly distribute the slurry into the corresponding slurry injection pipes 11, ensuring the balance of the slurry supply amount in each slurry injection pipe 11, thereby improving the grouting effect and quality. And by diverting the slurry through the slurry distributing member 13, it can effectively reduce the slurry blockage caused by excessive slurry injection amount during the grouting process and ensure the smooth flow of the slurry. By connecting the first end of the grouting pipe 12 to the slurry source and the second end of the grouting pipe 12 to the slurry distributing member 13, the operator only needs to control the opening and closing of the slurry source at one place to achieve multi-point grouting, simplifying the construction process and reducing the labor and time costs. Among them, the operator can, but is not limited to, use a grouting pump as the slurry source to grout the grouting pipe 12. In addition, the grouting pipe 12 can be selected as a grouting hose. The grouting hose has high flexibility, can be bent and folded, can adapt to complex construction environments, and is convenient for the layout and adjustment of the grouting pipe 12 during the construction process. In addition, the plurality of output ports of the slurry distributing member 13 can be arranged at intervals along the outer edge of the slurry distributing member 13, and the slurry injection pipes 11 are arranged in an L shape and respectively and correspondingly connected to the output ports of the slurry distributing member 13. This can reduce the cross-interference between the pipes, reduce the complexity during the construction process, and improve the connection efficiency. And such a design makes the overall layout more compact and makes the connection layout between the various structures on the slurry distributing member 13 more reasonable.
[0036] Combined with Figure 2 and Figure 3As shown, in the actual construction process, the depths of different high-confined water dewatering wells in deep foundation pits are different. In some embodiments, each slurry injection pipe 11 is composed of a plurality of connecting pipes 111 and at least one slurry outlet pipe 112. The plurality of connecting pipes 111 are detachably connected in series in sequence. The first end of the connected connecting pipes 111 is connected to the output port of the slurry distributing member 13. The second end of the connected connecting pipes 111 is detachably connected in series with at least one slurry outlet pipe 112 in sequence. A plurality of slurry outlet holes 113 are arranged at intervals along the length direction of the slurry outlet pipe 112. Each slurry injection pipe 11 can be assembled in series with a plurality of connecting pipes 111 according to the actual depth of different dewatering wells to adapt to dewatering wells of different depths. Exemplarily, the second end of the connected connecting pipes 111 is detachably connected in series with a slurry outlet pipe 112, and a plurality of slurry outlet holes 113 are formed in the slurry outlet pipe 112, so that the slurry flows out from the slurry outlet holes 113 of the slurry outlet pipe 112, which can ensure that the slurry outlet holes 113 are located at the bottom of the slurry injection pipe 11. During the grouting process, the slurry flows out from the bottom of the slurry injection pipe 11. When the bottom end of the slurry injection pipe 11 extends to the bottom of the clay ball backfill section 5, it can ensure that the grouting starts from the bottom of the clay ball backfill section 5, and the grouting process penetrates the entire clay ball backfill section 5, further preventing the risk of bottom heave in the dewatering well. Exemplarily, the operator can adjust the number of slurry outlet pipes 112 detachably connected in series at the second end of the connected connecting pipes 111 according to actual needs. With the increase in the number of slurry outlet pipes 112, the slurry outlet efficiency can be correspondingly improved, and the number of slurry outlet pipes 112 is not specifically limited herein. In this embodiment, the connecting pipe 111 connected to the output port on the outer edge of the slurry distributing member 13 can be set to be L-shaped. The first end of the L-shaped connecting pipe 111 is connected to the output port of the slurry distributing member 13, and the second end of the L-shaped connecting pipe 111 is connected in series with a plurality of other connecting pipes 111 and slurry outlet pipes 112 to form an L-shaped slurry injection pipe 11 as a whole. This can effectively reduce the cross interference between pipes, reduce the complexity during the construction process, and improve the connection efficiency; and make the overall layout of the slurry distributing member 13 more compact, make room for other structures on the slurry distributing member 13, and make the layout between various structures on the slurry distributing member 13 more reasonable.In addition, exemplarily, in order to achieve detachable series connection between multiple connecting pipes 111, the first ends of the multiple connecting pipes 111 can be set as threaded interfaces, the second ends of the multiple connecting pipes 111 can be set as threaded grooves, and the threaded interface at the first end of one connecting pipe 111 can be detachably connected to the threaded groove at the second end of the adjacent connecting pipe 111 through thread rotation; in order to achieve detachable series connection between the slurry outlet pipe 112 and the series-connected connecting pipes 111, the first end of the slurry outlet pipe 112 can be set as a threaded interface, the second end of the slurry outlet pipe 112 can be set as a threaded groove, and the threaded interface at the first end of the slurry outlet pipe 112 can be rotationally connected to the threaded groove at the second end of the series-connected multiple connecting pipes 111; the series connection between multiple slurry outlet pipes 112 adopts the same detachable connection method as described above, which will not be elaborated here; it should be noted that the detachable connection method can be, but is not limited to, the above-mentioned threaded connection method, as long as the series connection of the multiple connecting pipes 111 and the slurry outlet pipe 112 can be achieved.
[0037] As Figure 1 shown, in some embodiments, the lifting assembly 2 further includes a hoisting member 22 and at least one towing rope 23. The hoisting member 22 is disposed above the wellhead of the dewatering well, the lifting driving member 21 is disposed on the hoisting member 22, the first end of the towing rope 23 is connected to the output end of the lifting driving member 21, and the second end of the towing rope 23 is connected to the slurry distributing member 13 and / or the slurry injection pipe 11. By disposing the hoisting member 22 above the wellhead of the dewatering well and the lifting driving member 21 on the hoisting member 22, the stability of the lifting driving member 21 during movement can be ensured. Among them, when the selected lifting driving member 21 has a relatively large size, a bracket 26 can be disposed on the hoisting member 22 to support the lifting driving member 21 and avoid the situation that the lifting driving member 21 falls off the hoisting member 22 due to its own relatively large size. In addition, through the cooperative use of the lifting driving member 21 and the towing rope 23, and connecting the second end of the towing rope 23 to the slurry distributing member 13 and / or the slurry injection pipe 11, the operator can conveniently control the movement of the grouting assembly 1.
[0038] Continuing as Figure 1As shown, in order to improve the stability of the lifting assembly 2, in some embodiments, the lifting assembly 2 further includes a rotating shaft 24 and a wire reel 25. The rotating shaft 24 is rotatably arranged on the hoisting member 22, and the lifting driving member 21 can control the rotation of the rotating shaft 24. The wire reel 25 is arranged on the rotating shaft 24, and the first end of the towing rope 23 is wound and connected to the wire reel 25. By arranging the wire reel 25 on the rotating shaft 24 and controlling the rotation of the rotating shaft 24 through the lifting driving member 21, the wire reel 25 can wind the towing rope 23 orderly, which can prevent the towing rope 23 from knotting or tangling together during use. Moreover, the wire reel 25 has the function of storing the towing rope 23, which can reduce the mess at the construction site. Such a design can ensure the stable operation of the towing rope 23 and the stable movement of the grouting assembly 1, and can extend the service life of the towing rope 23. In some embodiments, in order to facilitate the operator to install the lifting mechanism, one towing rope 23 and one wire reel 25 can be provided. The wire reel 25 is arranged at the central position of the rotating shaft 24, the first end of the towing rope 23 is wound and connected to the wire reel 25, and the second end of the towing rope 23 is connected to the central position of the slurry distributing member 13. Through such a design, it can be ensured that the towing rope 23 is on the central axis of the construction device for dewatering wells with high confined water in deep foundation pits, and the traction force exerted by the towing rope 23 on the slurry distributing member 13 can be evenly distributed, ensuring that the grouting assembly 1 remains balanced during movement, reducing the inclination or shaking of the grouting assembly 1, so as to better control the movement of the grouting assembly 1.
[0039] In the current embodiment, in order to ensure stability, two towing ropes 23 and two wire reels 25 are provided. The two wire reels 25 are arranged on the rotating shaft 24 at intervals. The first ends of the two towing ropes 23 are respectively wound and connected to the two wire reels 25, and the second ends of the two towing ropes 23 are respectively symmetrically connected to the slurry distributing member 13 along the central axis of the slurry distributing member 13. By arranging two wire reels 25 wound with two towing ropes 23 and symmetrically connecting the second ends of the two towing ropes 23 to the slurry distributing member 13 along the central axis of the slurry distributing member 13, the force on the slurry distributing member 13 during movement can be effectively balanced, avoiding the inclination and instability of the grouting assembly 1 easily caused by a single towing rope 23. At the same time, the second ends of the towing ropes 23 are symmetrically arranged along the central axis of the slurry distributing member 13, which can effectively reduce the shaking and swaying of the grouting assembly 1 during movement, and can effectively avoid the situation that the grouting assembly 1 rotates during the ascending process due to uneven unilateral force, improving the balance of the device. It can be understood from this that the operator can set the number of the towing ropes 23 and the wire reels 25 according to actual needs, and no specific limitation is made here.
[0040] Furthermore, two connecting rods 15 are provided on the pulp dividing member 13. The first ends of the two connecting rods 15 are symmetrically connected to the pulp dividing member 13 along the central axis of the pulp dividing member 13 respectively, and the second ends of the two connecting rods 15 protrude from the outer edge of the pulp dividing member 13 respectively. The second ends of the two traction ropes 23 are connected to the second ends of the two connecting rods 15 respectively. By symmetrically arranging the two connecting rods 15 along the central axis of the pulp dividing member 13, a more stable and uniformly stressed connection position can be provided for the traction ropes 23. In addition, a hanging ring 16 can be provided on the connecting rod 15, and the traction rope 23 is connected through the hanging ring 16, which further enhances the stability of the connection between the traction rope 23 and the pulp dividing member 13. At the same time, two connecting plates 17 can be provided on the pulp dividing member 13. The two connecting plates 17 are symmetrically arranged along the central axis of the pulp dividing member 13, and the first ends of the connecting rods 15 are connected to the connecting plates 17. Through the design of the connecting plates 17, sufficient installation positions can be provided for the connecting rods 15, and the stability of the connection of the connecting rods 15 can be improved.
[0041] It should be noted that the connection method between the second end of the traction rope 23 and the hanging ring 16 in any of the above embodiments is not specifically limited, and a detachable connection method can be adopted, which is convenient for the operator to replace the traction rope 23. The detachable connection method can, but is not limited to, adopt the form of setting a buckle on the second end of the traction rope 23.
[0042] Continue as Figure 1As shown, in order to control the movement of multiple slurry injection pipes 11 along the depth direction of a specified dewatering well, in some embodiments, the grouting assembly 1 further includes a guiding member 14. The guiding member 14 includes a first guiding portion 141 and a second guiding portion 142. The first guiding portion 141 is disposed on the slurry distributing member 13, and the second guiding portion 142 is disposed on the hoisting member 22. The first guiding portion 141 and the second guiding portion 142 cooperate with each other to enable the slurry injection pipe 11 to move along the depth direction of the dewatering well. By providing the guiding member 14, an accurate movement path can be provided for the slurry injection pipe 11, enabling the slurry injection pipe 11 to move smoothly along the depth direction of the dewatering well, ensuring the stability of the slurry injection pipe 11 during repeated movements, thereby improving the grouting quality and effect, ensuring that the space between the outer wall of the shaft 100 and the well wall of the dewatering well can be evenly filled, guaranteeing the stability of the shaft 100, and also effectively reducing the vibration generated by the towing rope 23 during movement, enhancing the stability of the device. Specifically, when the first guiding portion 141 is a limiting protrusion, the second guiding portion 142 is a limiting groove extending along the depth direction of the dewatering well. One end of the limiting protrusion is connected to the connecting rod 15, and a limiting groove is provided in the hoisting member 22 along the depth direction of the dewatering well. The other end of the limiting protrusion is embedded in the limiting groove to enable it to move along the depth direction of the dewatering well. When the first guiding portion 141 is a pulley, the second guiding portion 142 is a slide rail extending along the depth direction of the dewatering well. One end of the pulley is connected to the connecting rod 15, and a slide rail is provided in the hoisting member 22 along the depth direction of the dewatering well. The other end of the pulley is connected to the slide rail, enabling the pulley to move along the depth direction of the dewatering well.
[0043] It should be noted that the lifting drive member 21 can be, but is not limited to, a servo motor, and no specific limitation is made here.
[0044] The following details the construction process of the construction device for a deep foundation pit high-confined water dewatering well provided in this embodiment:
[0045] First, the shaft 100 is penetrated into the dewatering well, and the space between the well wall of the dewatering well and the outer wall of the shaft 100 is filled with a permeable backfill section 6, a clay ball backfill section 5, and a general backfill section 4 in sequence from bottom to top.
[0046] Secondly, the output end of the lifting driving member 21 of the lifting assembly 2 is connected to a plurality of slurry injection pipes 11. The plurality of slurry injection pipes 11 are circumferentially spaced along the well wall of the dewatering well. The plurality of slurry injection pipes 11 are inserted between the well wall of the dewatering well and the outer wall of the wellbore 100. In order to avoid the poor grouting effect caused by the position deviation during the insertion of the slurry injection pipes 11, a plurality of positioning holes 31 corresponding to the plurality of slurry injection pipes 11 are provided on the cover plate 3 at the wellhead of the dewatering well. The plurality of slurry injection pipes 11 can be inserted between the well wall of the dewatering well and the outer wall of the wellbore 100 through the positioning holes 31 for grouting. The positioning holes 31 can ensure that the slurry injection pipes 11 accurately enter the predetermined positions, and the bottom ends of the slurry injection pipes 11 are extended to the bottom of the clay ball backfill section 5;
[0047] After that, grouting is carried out between the well wall of the dewatering well and the outer wall of the wellbore 100 through the slurry injection pipes 11. Driven by the lifting driving member 21, the slurry injection pipes 11 are slowly lifted along the depth direction of the dewatering well, so that the slurry is evenly filled between the well wall of the dewatering well and the outer wall of the wellbore 100 to reinforce the outer wall of the wellbore 100;
[0048] Finally, the slurry injection pipes 11 are lifted to the wellhead of the dewatering well by the lifting driving member 21, and the grouting is completed.
[0049] Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.
Claims
1. Construction device for deep foundation pit high-confined water dewatering well, which is used to reinforce the shaft (100) located in the dewatering well, characterized in that, The construction device for the deep foundation pit high-confined water dewatering well comprises: A grouting assembly (1), the grouting assembly (1) includes a plurality of slurry injection pipes (11), and the plurality of slurry injection pipes (11) are distributed at intervals along the circumferential direction of the well wall of the dewatering well; Wherein, the grouting assembly (1) further includes a grouting pipe (12) and a slurry distributing member (13), the first end of the grouting pipe (12) is connected to a slurry source, the slurry distributing member (13) is provided with an input port and a plurality of output ports, the input port of the slurry distributing member (13) is communicated with the plurality of output ports of the slurry distributing member (13), the input port of the slurry distributing member (13) is communicated with the second end of the grouting pipe (12), and the plurality of output ports of the slurry distributing member (13) are communicated with the plurality of slurry injection pipes (11) in one-to-one correspondence; A lifting assembly (2), the lifting assembly (2) includes a lifting driving member (21), the output end of the lifting driving member (21) is connected to the slurry injection pipe (11), the lifting driving member (21) can drive the slurry injection pipe (11) to move along the depth direction of the dewatering well between the well wall of the dewatering well and the outer wall of the wellbore (100), and the slurry injection pipe (11) is configured to inject slurry between the well wall of the dewatering well and the outer wall of the wellbore (100).
2. The construction device for the deep foundation pit high-confined water dewatering well according to claim 1, characterized in that, Each of the slurry injection pipes (11) is composed of a plurality of connecting pipes (111) and at least one slurry outlet pipe (112), the plurality of connecting pipes (111) are detachably connected in series in sequence, the first end of the connected connecting pipes (111) is connected to the output port of the slurry distributing member (13), the second end of the connected connecting pipes (111) is detachably connected in series with at least one of the slurry outlet pipes (112) in sequence, and a plurality of slurry outlet holes (113) are arranged at intervals along the length direction of the slurry outlet pipe (112).
3. The construction device for the deep foundation pit high-confined water dewatering well according to claim 1, wherein, The lifting assembly (2) further includes a hoisting member (22) and at least one towing rope (23), the hoisting member (22) is arranged above the wellhead of the dewatering well, the lifting driving member (21) is arranged on the hoisting member (22), the first end of the towing rope (23) is connected to the output end of the lifting driving member (21), and the second end of the towing rope (23) is connected to the slurry distributing member (13) and / or the slurry injection pipe (11).
4. The construction device for a deep foundation pit high-confined water dewatering well according to claim 3, characterized in that, The lifting assembly (2) further includes a rotating shaft (24) and at least one wire reel (25), the rotating shaft (24) is rotatably arranged on the hoisting member (22), the lifting driving member (21) can control the rotation of the rotating shaft (24), the wire reel (25) is arranged on the rotating shaft (24), and the first end of the towing rope (23) is wound and connected to the wire reel (25).
5. The construction device for the deep foundation pit high-confined water dewatering well according to claim 4, characterized in that, There are two wire winding reels (25), and the two wire winding reels (25) are arranged at intervals on the rotating shaft (24). There are two traction ropes (23). The first ends of the two traction ropes (23) are respectively wound and connected to the two wire winding reels (25), and the second ends of the two traction ropes (23) are respectively symmetrically connected to the slurry dividing member (13) along the axis of symmetry of the slurry dividing member (13).
6. The construction device for the deep foundation pit high-confined water dewatering well according to claim 5, characterized in that, There are two connecting rods (15) arranged on the slurry dividing member (13). The first ends of the two connecting rods (15) are respectively symmetrically connected to the slurry dividing member (13) along the axis of symmetry of the slurry dividing member (13). The second ends of the two connecting rods (15) respectively protrude from the outer edge of the slurry dividing member (13), and the second ends of the two traction ropes (23) are respectively connected to the two connecting rods (15).
7. The construction device for the deep foundation pit high-confined water dewatering well according to claim 3, characterized in that, The grouting assembly (1) further includes a guiding member (14). The guiding member (14) includes a first guiding portion (141) and a second guiding portion (142). The first guiding portion (141) is arranged on the slurry dividing member (13), and the second guiding portion (142) is arranged on the lifting member (22). The first guiding portion (141) and the second guiding portion (142) cooperate with each other to enable the slurry injection pipe (11) to move along the depth direction of the dewatering well.
8. The construction device of the deep foundation pit high-confined water dewatering well according to claim 7, characterized in that, The first guiding portion (141) is a limiting protrusion, and the second guiding portion (142) is a limiting groove extending along the depth direction of the dewatering well.
9. The construction device for the deep foundation pit high-confined water dewatering well according to claim 7, characterized in that, The first guiding portion (141) is a pulley, and the second guiding portion (142) is a slide rail extending along the depth direction of the dewatering well.