CN211312528U - Anti-floating waterproof system applied to deep foundation pit in karst water-rich area - Google Patents
Anti-floating waterproof system applied to deep foundation pit in karst water-rich area Download PDFInfo
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- CN211312528U CN211312528U CN201921978274.2U CN201921978274U CN211312528U CN 211312528 U CN211312528 U CN 211312528U CN 201921978274 U CN201921978274 U CN 201921978274U CN 211312528 U CN211312528 U CN 211312528U
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Abstract
The utility model discloses an anti waterproof system that floats for deep basal pit in karst rich water district, this system includes: foundation ditch main part and precipitation well, the foundation ditch main part includes: a top plate, a bottom plate and side walls; the top plate and the bottom plate are respectively arranged on the top surface and the bottom surface of the foundation pit body, and the top plate and the bottom plate are parallel and are both vertically fixed with the side wall; the plurality of dewatering wells are arranged at the bottom of the bottom plate, and the dewatering wells are internally provided with pipelines for pumping water and grouting, and the pipelines extend from the outer wall of the side wall to the bottom of the dewatering wells; the utility model discloses a precipitation well that a plurality of communicates each other realizes that drainage and slip casting combine, and then the effectual come-up that prevents to excavate the foundation ditch and the emergence of the scheduling problem of gushing water provide the guarantee for the safety construction of foundation ditch.
Description
Technical Field
The utility model relates to a foundation ditch waterproof field especially relates to an anti waterproof system that floats that is applied to deep foundation ditch of karst rich water district.
Background
The existing method for anti-floating and waterproof treatment of deep foundation pits in karst water-rich areas adopts a drainage or water plugging method, drainage needs to be carried out between every two dewatering wells during drainage, time and labor are wasted, the effect is poor, the whole situation cannot be considered, the situation of water overflow and water burst of other dewatering wells is easily caused in the drainage treatment process, karst fracture water is communicated with each other and is supplemented with each other, and local dewatering cannot be effectively controlled; in addition, the anti-floating mainly adopts a drainage and water plugging method, the integral structure of the foundation pit and the surrounding rock-soil body are not connected into a whole, so that the buoyancy of water borne by the underground structure of the foundation pit is greater than the gravity of the underground structure in a karst water-rich area, and the foundation pit floats upwards finally.
SUMMERY OF THE UTILITY MODEL
The utility model provides an anti waterproof system that floats of being applied to deep basal pit in karst rich water district to overcome above-mentioned technical problem.
The utility model discloses a, foundation ditch main part and precipitation well, the foundation ditch main part includes: a top plate, a bottom plate and side walls; the top plate and the bottom plate are respectively arranged on the top surface and the bottom surface of the foundation pit body, and the top plate and the bottom plate are parallel and are both vertically fixed with the side wall; a plurality of the precipitation well set up in the bottom plate bottom, its characterized in that, be provided with the pipeline that is used for drawing water and slip casting in the precipitation well, the pipeline is followed the side wall outer wall extends to precipitation well bottom.
Furthermore, a plurality of precipitation wells evenly distributed in the bottom plate below, a plurality of precipitation wells pass through the pipeline intercommunication, a plurality of the well face height of precipitation well reduces from the center to the edge gradually, and water passes through the pipeline from the precipitation well in center department to the precipitation well in edge department, and the thick liquid passes through the pipeline from the precipitation well in edge department to the precipitation well in center department.
Furthermore, a plurality of precipitation wells are uniformly distributed in a rectangular mode below the bottom plate, and pipelines in the precipitation wells at the four corners of the rectangular mode are communicated with the outside.
Further, the diameter of the pipeline is 1/3 of the diameter of the dewatering well.
Furthermore, one end of the pipeline, which is positioned at the bottom of the dewatering well, is fixedly provided with a filter screen for filtering sand and mud.
Furthermore, anti-floating toes are arranged at the bottom of the foundation pit main body, a steel pipe pile is arranged between the anti-floating toes and the foot locking beam, one end of the steel pipe pile is fixed on the foot locking beam, and the other end of the steel pipe pile is fixed on the anti-floating toes.
Furthermore, a through hole is formed in the side wall of the pipeline, a slide way is arranged in the vertical direction of the inner wall of the pipeline and transversely penetrates through the through hole, and a sliding stopper which enables the through hole to be opened and closed is arranged on the slide way.
The utility model discloses a precipitation well that a plurality of communicates each other realizes that drainage and slip casting combine, and then the effectual come-up that prevents to excavate the foundation ditch and the emergence of the scheduling problem of gushing water provide the guarantee for the safety construction of foundation ditch.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of the pipeline structure of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model discloses a, foundation ditch main part and precipitation well 27, the foundation ditch main part includes: a top plate 3, a bottom plate 6 and side walls 10; the top plate 3 and the bottom plate 6 are respectively arranged on the top surface and the bottom surface of the foundation pit body, and the top plate 3 and the bottom plate 6 are parallel and are both vertically fixed with the side wall 10; a top plate waterproof layer 17 and top plate backfill 18 are arranged at the top of the top plate 3; the bottom plate 6 is fixed at the bottom of the foundation pit body through bottom plate stressed steel bars 22, a bottom plate concrete cushion layer 25 is arranged below the bottom plate 6, a bottom plate concrete waterproof layer 24 is arranged below the bottom plate concrete cushion layer, and a bottom plate concrete leveling cushion layer 23 is arranged below the bottom plate concrete waterproof layer 24; the upper part of the foundation pit body is provided with a prestressed anchor cable 19 anchored towards the lower part of the periphery of the foundation pit main body, and the lower part of the side surface of the foundation pit body is provided with a rock anchor rod 20 anchored towards the lower part of the periphery of the foundation pit body; an underground first-layer bottom plate 4 and an underground second-layer bottom plate 5 are arranged between the top plate 3 and the bottom plate 6; side wall 10 department is equipped with side wall waterproof layer 9, be equipped with the secant pile (including meat stake 13 and the plain pile 11 that the interval set up) around foundation ditch body upper portion, the top of secant pile is equipped with guan liang 15, the top of guan liang 15 is fixed with can enclose retaining wall 16 that keeps off roof plate backfill 18.
A plurality of precipitation well 27 set up in bottom plate 6 bottom, be provided with the pipeline 28 that is used for drawing water and slip casting in the precipitation well 27, pipeline 28 follows the side wall 10 outer wall extends to precipitation well 27 bottom.
Furthermore, a plurality of the dewatering wells 27 are uniformly distributed below the bottom plate 6, a plurality of the dewatering wells 27 are communicated through the pipeline 28, the well surface height of the plurality of the dewatering wells 27 is gradually reduced from the center to the edge, water flows from the dewatering well 27 at the center to the dewatering well 27 at the edge through the pipeline 28, and slurry flows from the dewatering well 27 at the edge to the dewatering well at the center through the pipeline 28.
Furthermore, a plurality of the precipitation wells 27 are uniformly distributed below the bottom plate 6 in a rectangular shape, and pipelines 28 in the precipitation wells 27 at the four corners of the rectangular shape are communicated with the outside.
Particularly, the utility model provides a precipitation well 27 sets up to sixteen, as shown in FIG. 1, does the utility model discloses a cross-sectional view, a plurality of precipitation wells 27 pass through pipeline 28 intercommunication, and the well face height of the precipitation well 27 of both sides is minimum in the picture, and the well face of two middle precipitation wells 27 is highest, and then the pipeline 28 that sets up in the precipitation well 27 that the well face height is minimum utilizes the water pump can with precipitation well 27's water is followed foundation ditch body lower part center department extracts out.
Further, in order to achieve higher pumping and grouting efficiency, the diameter of the pipeline 28 is 1/3 of the diameter of the dewatering well 27.
Furthermore, in order to prevent the extracted water from blocking the pipeline 28 due to containing a large amount of sand and mud, a filter screen 30 is fixedly arranged at one end of the pipeline 28 at the bottom of the dewatering well 27, and the filter screen 30 is used for filtering the sand and mud.
Furthermore, anti-floating toes 21 are arranged at the bottom of the foundation pit main body, steel pipe piles are arranged between the anti-floating toes 21 and the foot locking beams 26, one ends of the steel pipe piles 7 are fixed on the foot locking beams 26, and the other ends of the steel pipe piles 7 are fixed on the anti-floating toes 21; the weight of the upper rock mass is utilized to press the anti-floating toes 21, the anti-floating force of the whole structure of the foundation pit body is provided, and the anti-floating structure is integrated with the surrounding rock mass and meets the durability of the anti-floating structure by adopting reinforced concrete construction.
Further, as shown in fig. 2, a through hole 31 is formed in a side wall of the pipeline 28, a slide 34 is vertically arranged on an inner wall of the pipeline 28, the slide 34 traverses the through hole 31, and a sliding stopper 32 for opening and closing the through hole 31 is arranged on the slide 34; the sliding stopper 32 is a structure formed by beveling from the edge of the end face of the cylinder to the length direction of the cylinder, a pulley is fixed on the circular end face of the sliding stopper 32 and can slide on the slideway 34 (the concrete structure of the slideway is not shown in the figure), the long side of the sliding stopper 32 faces upwards, the length of the long side is smaller than the diameter of the pipeline 28, the short side faces downwards, when water pumping is started, under the action of water pressure, the sliding stopper 32 slides upwards and is stopped by a limiting part at the upper end of the slideway 34 to stop advancing, so that the through hole 31 is blocked, water in the dewatering well 27 is prevented from being left to the bottom from the through hole again, after water pumping is finished, grouting is performed from the pipeline 28 arranged in the dewatering well 27 with the lowest well face height, at the moment, the sliding stopper 32 moves downwards under the pressure of grout and is stopped by the limiting part at the lower end of the slideway 34, when the downward movement is stopped, the slurry flows out of the pipeline 28 through the through holes 31, so that the slurry is uniformly distributed, and the grouting efficiency is accelerated.
The utility model has the advantages that:
(1) compared with the existing foundation pit anti-floating structure, the utility model adopts anti-floating toes to integrate the foundation pit body with the surrounding rock mass, and adopts a pumping and outward discharging mode, thereby effectively eliminating the risk of foundation pit floating;
(2) a plurality of dewatering wells are communicated for pumping water and discharging the water, so that the blindness of local drainage and the outburst of other potential hidden danger areas are effectively avoided, and a beneficial drainage effect is achieved;
(3) the well plugging and karst crack filling mode of reverse high-pressure grouting filling after water pumping effectively avoids engineering hidden dangers and provides safety guarantee for stability and long-term operation of the foundation pit body structure.
(4) The wall of the pumping grouting pipeline is additionally provided with rock mass fracture grouting holes around the foundation pit, so that the rock mass fracture around the foundation pit can be effectively plugged.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (7)
1. The utility model provides an anti waterproof system that floats for deep basal pit in karst rich water district, includes, foundation ditch main part and precipitation well (27), the foundation ditch main part includes: the top plate (3), the bottom plate (6) and the side walls (10); the top plate (3) and the bottom plate (6) are respectively arranged on the top surface and the bottom surface of the foundation pit body, and the top plate (3) and the bottom plate (6) are parallel and are both vertically fixed with the side wall (10); a plurality of precipitation well (27) set up in bottom plate (6) bottom, characterized in that, be provided with in precipitation well (27) and be used for the pipeline (28) of water extraction and slip casting, pipeline (28) follow side wall (10) outer wall extends to precipitation well (27) bottom.
2. The system as claimed in claim 1, wherein a plurality of said precipitation wells (27) are evenly distributed under said floor (6), a plurality of said precipitation wells (27) are connected by said pipes (28), the height of the surface of a plurality of said precipitation wells (27) is gradually reduced from the center to the edge, water flows from the precipitation well (27) at the center to the precipitation well (27) at the edge through said pipes (28), and slurry flows from the precipitation well (27) at the edge to the precipitation well at the center through said pipes (28).
3. The system according to claim 2, characterized in that a plurality of said precipitation wells (27) are uniformly distributed in a rectangular shape below said bottom plate (6), and the pipes (28) in the precipitation wells (27) at the four corners of said rectangular shape are communicated with the outside.
4. The system according to claim 2, characterized in that the diameter of the pipeline (28) is 1/3 of the diameter of the dewatering well (27).
5. The system according to claim 2, characterized in that the end of the pipeline (28) at the bottom of the dewatering well (27) is fixedly provided with a filter screen (30) for filtering sand and mud.
6. The system according to claim 2, characterized in that anti-floating toes (21) are arranged at the bottom of the foundation pit main body, steel pipe piles are arranged between the anti-floating toes (21) and the foot locking beams (26), one ends of the steel pipe piles (7) are fixed on the foot locking beams (26), and the other ends of the steel pipe piles (7) are fixed on the anti-floating toes (21).
7. The system according to claim 1, characterized in that the side wall of the pipeline (28) is provided with a through hole (31), the inner wall of the pipeline (28) is provided with a slide way (34) in the vertical direction, the slide way (34) crosses the through hole (31), and the slide way (34) is provided with a sliding stopper (32) which opens and closes the through hole (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921978274.2U CN211312528U (en) | 2019-11-15 | 2019-11-15 | Anti-floating waterproof system applied to deep foundation pit in karst water-rich area |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921978274.2U CN211312528U (en) | 2019-11-15 | 2019-11-15 | Anti-floating waterproof system applied to deep foundation pit in karst water-rich area |
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| CN211312528U true CN211312528U (en) | 2020-08-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761291A (en) * | 2019-11-15 | 2020-02-07 | 中铁一局集团第二工程有限公司 | Anti-floating waterproof system and method applied to deep foundation pit in karst water-rich area |
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2019
- 2019-11-15 CN CN201921978274.2U patent/CN211312528U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761291A (en) * | 2019-11-15 | 2020-02-07 | 中铁一局集团第二工程有限公司 | Anti-floating waterproof system and method applied to deep foundation pit in karst water-rich area |
| CN110761291B (en) * | 2019-11-15 | 2024-06-07 | 中铁一局集团第二工程有限公司 | Anti-floating waterproof system and method applied to karst water-rich region deep foundation pit |
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