CN214738179U

CN214738179U - Foundation pit dewatering structure

Info

Publication number: CN214738179U
Application number: CN202120607708.9U
Authority: CN
Inventors: 杨星星; 何莹莹; 沈伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2021-11-16
Anticipated expiration: 2031-03-25

Abstract

The utility model relates to a foundation ditch dewatering technical field, especially a foundation ditch dewatering structure, including a backplate, the outside of propping up the backplate is provided with sponge board and fastening net, the bottom of propping up the backplate is provided with water catch bowl and accumulator, the outside of propping up the backplate is provided with well point pipe and water pump. The utility model has the advantages that: utilize connecting rod and connecting hole to become backplate and well point pipe fixed connection, make whole dewatering structure become a whole, improve the especially stability of backplate of this dewatering structure, the well point that takes the well point pipe is set up in four sides of foundation ditch carries out well point dewatering to groundwater, it carries out the secondary separation to groundwater to recycle backplate and sponge board, improve the dewatering effect of this structure, in advancing the well point with well point pipe installation, and set up a backplate at the foundation ditch edge after, it accomplishes fixedly to bore the connecting rod in the connecting hole to the soil horizon and manage go-between threaded connection with the well point, make well point pipe and prop up the backplate become a whole in the installation later stage.

Description

Foundation pit dewatering structure

Technical Field

The utility model relates to a foundation ditch precipitation technical field, especially a foundation ditch precipitation structure.

Background

The foundation pit refers to a space below the ground excavated for the construction of a building foundation and a basement. The foundation pit dewatering refers to dewatering work performed for ensuring that the foundation pit can be constructed under a dry condition and preventing slope instability, foundation quicksand, pit bottom uplift, pit bottom piping and foundation bearing capacity reduction when the underground water level is higher than the excavation bottom surface when the foundation pit is excavated. The foundation pit dewatering method mainly comprises the following steps: open ditch water collecting well precipitation, light well point precipitation, jet well point precipitation, electroosmosis well point precipitation, deep well point precipitation and the like. The light well point is a method for artificially reducing underground water level, and is characterized by that along the periphery of foundation pit or one side of the foundation pit a well pipe whose diameter is small is sunk into the water-containing layer whose depth is deeper than base, and the upper portion of said well pipe is connected with main pipe, and the water-pumping equipment can be used to continuously pump underground water out of the well pipe by means of main pipe so as to reduce original underground water level to below base. The light well points are also called vacuum well points. Light well point dewatering (primary light well point) is a dewatering method widely applied in China, is simpler, safer and more economic than other well point systems in construction, and is particularly suitable for occasions with small foundation pit area and low water level reduction. The method reduces the water level depth to 3-6m, if the dewatering depth is required to be more than 6m, theoretically, a multi-stage well point system can be adopted, but enough space is required outside the periphery of a foundation pit to facilitate slope release or groove digging, which is generally not allowed for foundation pit supporting engineering with limited site, so that a one-stage light well point system is commonly used.

The shortcoming of current foundation ditch precipitation structure:

1. in the existing foundation pit dewatering structure, dewatering is arranged on the inner wall of the foundation pit, so that the influence on the stability of the inner wall of the foundation pit is large; 2. the current foundation pit dewatering structural stability is relatively poor, can't play the effect of strutting to the foundation pit.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a foundation ditch precipitation structure, effectively solved prior art not enough.

The purpose of the utility model is realized through the following technical scheme: the utility model provides a foundation pit dewatering structure, includes a backplate, the outside of backplate is provided with a plurality of well point pipes, the top fixedly connected with water pump pipe of well point pipe, the both corners fixedly connected with water pump of water pump pipe, a plurality of connecting holes have been seted up on the backplate, through connecting hole fixedly connected with connecting rod between backplate and the well point pipe.

Optionally, a sponge plate is fixedly connected to the outer side of the supporting plate, a fastening net is fixedly connected to the outer side of the sponge plate, drainage holes are formed in the sponge plate, the drainage holes vertically penetrate through the sponge plate, the positions of the drainage holes are staggered with those of the connecting holes, the diameter of each drainage hole is smaller than the thickness of the sponge plate, the four sides of the foundation pit are protected by the fastening net and the supporting plate, the effect of supporting and isolating groundwater is achieved, the stability of the edge of the foundation pit is improved, the foundation pit is prevented from collapsing due to erosion of groundwater, groundwater permeating to the edge of the foundation pit is absorbed by the sponge plate, the absorbed groundwater is drained downwards by the drainage holes for centralized treatment, therefore, groundwater permeating through a well point is prevented from entering the interior of the foundation pit through the fastening net and the supporting plate, the drainage holes and the connecting holes are staggered, and the situation that connecting rods installed in the connecting holes can be prevented from blocking the groundwater absorbed by the sponge plate from transferring downwards, and the influence of the underground water on the service life of the connecting rod can be avoided.

Optionally, prop up the bottom fixedly connected with water catch bowl of backplate, the opening at water catch bowl top aligns with the drainage hole on the sponge board, the shape of water catch bowl and the shape looks adaptation of propping up the backplate bottom, the inboard of water catch bowl surpasss a supporting plate segment length, a plurality of stocks of bottom fixedly connected with of water catch bowl set up the base of water catch bowl as propping up the backplate in the bottom of propping up the backplate, make the structure between supporting plate and the foundation ditch more stable, and the water catch bowl forms the L shape with the supporting plate and can bear more pressure that comes from the foundation ditch edge, stock and soil layer fixed connection through the water catch bowl bottom have made supporting plate and fastening net and foundation ditch edge zonulae occludens improve foundation ditch constructor's factor of safety.

Optionally, the water catch bowl inclines slightly to the one corner of a backplate, the minimum fixedly connected with accumulator of water catch bowl, the one corner of water catch bowl minimum is located the below of one side water pump, one side fixedly connected with drinking-water pipe of water catch bowl top water pump, the one end swing joint of drinking-water pipe is in the inside of accumulator, and the water catch bowl passes through the inclined plane with the moisture that the sponge board was collected and concentrates the accumulator in, and the rethread drinking-water pipe and water pump will be retrieved water and concentrate the foundation ditch of taking out, avoid passing the groundwater of well point and cause the influence to the foundation ditch construction to keep the inside dry stability of foundation ditch.

Optionally, the connecting holes penetrate through the sponge plate and the fastening net, the positions of the connecting holes correspond to the positions of the well point pipes, the connecting holes are distributed on the straight lines corresponding to the well point pipes at equal intervals, the diameter of the connecting rod is matched with that of the connecting holes, and the supporting plate and the well point pipes are fixedly connected through the connecting rod and the connecting holes, so that the whole dewatering structure is integrated, and the stability of the dewatering structure, particularly the supporting plate, is improved.

Optionally, the outer diameter of each well point pipe is sleeved with a connecting ring, the position of each connecting ring corresponds to the position of a connecting hole for installing the connecting rod, one side of each connecting ring is provided with a threaded hole, one end of each connecting rod is provided with an external thread matched with the threaded hole, the other end of each connecting rod is fixedly connected with a nut, the outer side of the foundation pit is provided with a plurality of well points, each well point pipe is fixedly connected inside the corresponding well point, the four sides of the foundation pit are provided with well points with the well point pipes to perform well point dewatering on the underground water, then the underground water is secondarily separated by using the support plates and the sponge plates to improve the dewatering effect of the structure, when the well point pipes are installed into the well points, and after the support plates are arranged at the edges of the foundation pits, the connecting rods are drilled into the soil layers in the connecting holes and are connected with the connecting rings on the well point pipes in a threaded manner to complete fixation, so that the well point pipes and the support plates form a whole in the later stage of installation, not only the stability of structure has been guaranteed, and easy to assemble and transportation material.

The utility model has the advantages of it is following:

1. the foundation pit dewatering structure has the advantages that the sponge plate with the drainage holes and the water collecting groove are arranged on one side of the supporting plate, four sides of a foundation pit are protected by the fastening net and the supporting plate, the effects of supporting and isolating underground water are achieved, the stability of the edge of the foundation pit is improved, the situation that the foundation pit collapses under the corrosion of the underground water is avoided, the underground water permeating the edge of the foundation pit is absorbed by the sponge plate, the absorbed underground water is drained downwards by the drainage holes for centralized treatment, the phenomenon that the underground water permeating through a well point penetrates through the fastening net and the supporting plate to enter the interior of the foundation pit is avoided, the drainage holes and the connecting holes are staggered, the phenomenon that the underground water absorbed by the sponge plate is blocked by the connecting rods arranged in the connecting holes to transfer downwards is avoided, the phenomenon that the service life of the connecting rods is influenced by the corrosion of the underground water is also avoided, the water collecting groove is arranged at the bottom of the supporting plate and serves as the base of the supporting plate, and the structure between the supporting plate and the foundation pit is more stable, the water catch bowl forms L shape with the supporting plate and can bear more pressure that comes from the foundation ditch edge, stock and soil layer fixed connection through the water catch bowl bottom have made supporting plate and fastening net and foundation ditch edge closely combine the factor of safety that improves foundation ditch constructor, the water catch bowl passes through the inclined plane with the moisture that the sponge board was collected and concentrates the accumulator in, the rethread drinking-water pipe and water pump will be retrieved water and concentrate the foundation ditch of taking out, the groundwater of avoiding passing the well point causes the influence to the foundation ditch construction, thereby keep the inside dry stability of foundation ditch.

2. This foundation pit dewatering structure, through set up well point pipe and with connecting rod and supporting plate fixed connection in the outside of foundation pit, utilize connecting rod and connecting hole will prop up backplate and well point pipe fixed connection, make whole dewatering structure become a whole, improve the stability of this dewatering structure especially propping up the backplate, set up the well point of taking the well point pipe in four sides of foundation pit and carry out well point dewatering to groundwater, recycle and prop up backplate and sponge board and carry out the secondary separation to groundwater, improve the dewatering effect of this structure, in advancing the well point pipe installation well point, and set up behind the backplate at the foundation pit edge, it is fixed to go into the connecting rod and accomplish with the go-between threaded connection on the well point pipe in the connecting hole to the soil layer in, make well point pipe and prop up the backplate become a whole in installation later stage, the stability of structure has not only been guaranteed, and easy to assemble and transport material.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

fig. 3 is an enlarged schematic view of a portion a of fig. 2 according to the present invention;

fig. 4 is an enlarged schematic structural diagram of the present invention at B in fig. 2.

In the figure: 1-support guard plate, 2-well point pipe, 3-water pump pipe, 4-water pump, 5-connecting hole, 6-connecting rod, 7-sponge plate, 8-fastening net, 9-drainage hole, 10-water collecting tank, 11-recovery tank, 12-water pumping pipe, 13-anchor rod and 14-connecting ring.

Detailed Description

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.

As shown in fig. 1 to 4, a foundation pit dewatering structure, it includes a backplate 1, and the outside of backplate 1 is provided with a plurality of well point pipes 2, and the top fixedly connected with water pump pipe 3 of well point pipe 2, the both corners fixedly connected with water pump 4 of water pump pipe 3 have seted up a plurality of connecting holes 5 on the backplate 1, through connecting hole 5 fixedly connected with connecting rod 6 between backplate 1 and the well point pipe 2.

As an optional technical solution of the utility model: the outside fixedly connected with sponge board 7 of a backplate 1, the outside fixedly connected with fastening net 8 of sponge board 7, drainage hole 9 has been seted up to the inside of sponge board 7, drainage hole 9 is equal vertical runs through sponge board 7, the position of drainage hole 9 staggers with the position of connecting hole 5, the diameter of drainage hole 9 is less than the thickness of sponge board 7, utilize fastening net 8 and backup plate 1 to protect four sides of foundation ditch all, play the effect of supporting and isolated groundwater, improve the stability at foundation ditch edge, avoid it to take place the condition of collapsing under groundwater erosion, utilize sponge board 7 to absorb the groundwater that permeates foundation ditch edge, recycle drainage hole 7 and carry out centralized processing with the groundwater drainage downwards that absorbs, thereby avoid the groundwater that permeates the well point to pass fastening net 8 and backup plate 1 and get into inside the foundation ditch, stagger drainage hole 9 and connecting hole 5 and can avoid installing connecting rod 6 in connecting hole 5 to block that sponge board 7 absorbs and shift downwards And the influence of the underground water on the service life of the connecting rod 6 can be avoided.

As an optional technical solution of the utility model: the bottom fixedly connected with water catch bowl 10 of a backplate 1, the opening at water catch bowl 10 top aligns with drainage hole 9 on the sponge board 7, the shape of water catch bowl 10 and the shape looks adaptation of a backplate 1 bottom, the inboard of water catch bowl 10 surpasss a backplate 1 section length, a plurality of stock 13 of bottom fixedly connected with of water catch bowl 10, set up water catch bowl 10 as the base of a backplate 1 in the bottom of supporting plate 1, make the structure between a backplate 1 and the foundation ditch more stable, the water catch bowl 10 forms L shape with supporting plate 1 and can bear more pressure that comes from the foundation ditch edge, stock 13 and soil layer fixed connection through the water catch bowl 10 bottom, make a backplate 1 and fastening net 8 and foundation ditch edge closely combine improvement foundation ditch constructor's factor of safety.

As an optional technical solution of the utility model: water catch bowl 10 inclines slightly to the one corner of supporting plate 1, the minimum fixedly connected with accumulator 11 of water catch bowl 10, the one corner of water catch bowl 10 minimum is located the below of one side water pump 4, one side fixedly connected with drinking-water pipe 12 of water pump 4 above water catch bowl 10, the one end swing joint of drinking-water pipe 12 is in accumulator 11's inside, accumulator 10 concentrates the moisture that sponge board 7 collected to accumulator 11 through the inclined plane, the rethread drinking-water pipe 12 and water pump 4 concentrate the foundation ditch of taking out with the recovered water, the groundwater of avoiding passing the well point causes the influence to the foundation ditch construction, thereby keep the inside dry stability of foundation ditch.

As an optional technical solution of the utility model: connecting hole 5 passes sponge board 7 and fastening net 8, and the position of connecting hole 5 corresponds with the position of well point pipe 2, and connecting hole 5 is equidistant to be distributed on the corresponding straight line of well point pipe 2, and the diameter of connecting rod 6 and the diameter looks adaptation of connecting hole 5 utilize connecting rod 6 and connecting hole 5 to prop up backplate 1 and well point pipe 2 fixed connection, make whole precipitation structure become a whole, improve the stability of this precipitation structure especially propping up backplate 1.

As an optional technical solution of the utility model: the outer diameter of the well point pipe 2 is sleeved with a connecting ring 14, the position of the connecting ring 14 corresponds to the position of a connecting hole 5 for installing a connecting rod 6, one side of the connecting ring 14 is provided with a threaded hole, one end of the connecting rod 6 is provided with an external thread matched with the threaded hole, the other end of the connecting rod 6 is fixedly connected with a nut, the outer side of a foundation pit is provided with a plurality of well points, the well point pipe 2 is fixedly connected inside the well points, the well points with the well point pipes 2 are arranged on four sides of the foundation pit to carry out well point dewatering on the underground water, then a support guard plate 1 and a sponge plate 7 are utilized to carry out secondary separation on the underground water, the dewatering effect of the structure is improved, when the well point pipe 2 is installed into the well points, and the support guard plate 1 is arranged on the edge of the foundation pit, the connecting rod 6 is drilled into a soil layer in the connecting hole 6 and is in threaded connection with the connecting ring 14 on the well point pipe 2 to complete fixation, so that the well point pipe 2 and the support guard plate 1 are integrated in the later period of installation, not only the stability of structure has been guaranteed, and easy to assemble and transportation material.

The working process of the utility model is as follows:

s1, setting well points on four sides of the foundation pit, fixing a well point pipe 2 in the well points, and setting a water pump pipe 3 and a water pump 4 on the top of the well point pipe 2;

s2, arranging support guard plates 1 on four sides of the foundation pit and connecting the support guard plates with the well point pipe 2 through connecting rods 6.

In summary, the following steps: the foundation pit dewatering structure has the advantages that the sponge plate 7 with the drainage holes 9 and the water collecting groove 10 are arranged on one side of the supporting plate 1, four sides of a foundation pit are protected by the fastening net 8 and the supporting plate 1, the effects of supporting and isolating underground water are achieved, the stability of the edge of the foundation pit is improved, the situation that the foundation pit collapses under the corrosion of the underground water is avoided, the underground water permeating the edge of the foundation pit is absorbed by the sponge plate 7, the absorbed underground water is drained downwards by the drainage holes 7 for centralized treatment, the underground water permeating through a well point is prevented from passing through the fastening net 8 and the supporting plate 1 to enter the interior of the foundation pit, the drainage holes 9 and the connecting holes 5 are staggered, the connecting rods 6 arranged in the connecting holes 5 can prevent the underground water absorbed by the sponge plate 7 from transferring downwards, the influence on the service life of the connecting rods 6 due to the corrosion of the underground water can also be avoided, the water collecting groove 10 is arranged at the bottom of the supporting plate 1 and serves as a base of the supporting plate 1, the structure between the supporting and protecting plate 1 and the foundation pit is more stable, the water collecting tank 10 and the supporting and protecting plate 1 form an L shape which can bear more pressure from the edge of the foundation pit, the anchor rod 13 at the bottom of the water collecting tank 10 is fixedly connected with a soil layer, the supporting and protecting plate 1 and the fastening net 8 are tightly combined with the edge of the foundation pit to improve the safety factor of foundation pit constructors, the water collecting tank 10 concentrates the water collected by the sponge plate 7 into the recovery tank 11 through the inclined surface, and then the recovered water is concentrated and pumped out of the foundation pit through the water pumping pipe 12 and the water pump 4, so that the influence of underground water passing through a well point on the construction of the foundation pit is avoided, and the drying and the stability of the interior of the foundation pit are kept; the well point pipe 2 is arranged on the outer side of the foundation pit and is fixedly connected with the supporting plate 1 by the connecting rod 6, the supporting plate 1 is fixedly connected with the well point pipe 2 by the connecting rod 6 and the connecting hole 5, so that the whole dewatering structure is integrated, the stability of the dewatering structure, particularly the supporting plate 1, is improved, the four sides of the foundation pit are provided with well points with well point pipes 2 to carry out well point dewatering on the underground water, and then the supporting guard plates 1 and the sponge plates 7 are utilized to carry out secondary separation on the underground water, so that the dewatering effect of the structure is improved, when the well point pipes 2 are installed into the well points and the supporting guard plates 1 are arranged at the edge of the foundation pit, drilling into connecting rod 6 and accomplishing fixedly with go-between 14 threaded connection on the well point pipe 2 in connecting hole 6 to the soil layer, make well point pipe 2 and prop up backplate 1 and become a whole in the installation later stage, not only guaranteed the stability of structure, and easy to assemble and transportation material.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a foundation ditch precipitation structure which characterized in that: including a backplate (1), the outside of backplate (1) is provided with a plurality of well point pipes (2), the top fixedly connected with water pump pipe (3) of well point pipe (2), two angle fixedly connected with water pump (4) of water pump pipe (3), a plurality of connecting holes (5) have been seted up on backplate (1), through connecting hole (5) fixedly connected with connecting rod (6) between backplate (1) and well point pipe (2).

2. A pit dewatering structure according to claim 1, wherein: the outer side of the supporting plate (1) is fixedly connected with a sponge plate (7), the outer side of the sponge plate (7) is fixedly connected with a fastening net (8), the drainage holes (9) are formed in the sponge plate (7), the drainage holes (9) penetrate through the sponge plate (7) vertically, the positions of the drainage holes (9) are staggered with the positions of the connecting holes (5), and the diameter of each drainage hole (9) is smaller than the thickness of the sponge plate (7).

3. A pit dewatering structure according to claim 2, wherein: the bottom fixedly connected with water catch bowl (10) of propping up backplate (1), the opening at water catch bowl (10) top aligns with drainage hole (9) on sponge board (7), the shape of water catch bowl (10) and the shape looks adaptation of propping up backplate (1) bottom, the inboard of water catch bowl (10) surpasss a backplate (1) one section length, the bottom fixedly connected with of water catch bowl (10) a plurality of stock (13).

4. A pit dewatering structure according to claim 3, wherein: water catch bowl (10) slope slightly to the one corner of supporting plate (1), the minimum fixedly connected with accumulator (11) of water catch bowl (10), the one corner of water catch bowl (10) minimum is located the below of one side water pump (4), one side fixedly connected with drinking-water pipe (12) of water catch bowl (10) top water pump (4), the one end swing joint of drinking-water pipe (12) is in the inside of accumulator (11).

5. A pit dewatering structure according to claim 2, wherein: the connecting holes (5) penetrate through the sponge plates (7) and the fastening net (8), the positions of the connecting holes (5) correspond to the positions of the well point pipes (2), the connecting holes (5) are distributed on the corresponding straight lines of the well point pipes (2) at equal intervals, and the diameter of the connecting rod (6) is matched with that of the connecting holes (5).

6. A pit dewatering structure according to claim 1, wherein: the outer diameter of the well point pipe (2) is sleeved with a connecting ring (14), the position of the connecting ring (14) corresponds to the position of a connecting hole (5) of an installing connecting rod (6), a threaded hole is formed in one side of the connecting ring (14), an external thread matched with the threaded hole is formed in one end of the connecting rod (6), a nut is fixedly connected to the other end of the connecting rod (6), a plurality of well points are formed in the outer side of a foundation pit, and the well point pipe (2) is fixedly connected to the inner portion of the well point.