CN212896422U

CN212896422U - Deep foundation pit water intercepting and draining device

Info

Publication number: CN212896422U
Application number: CN202022258196.8U
Authority: CN
Inventors: 苗恩新; 余健; 高兴
Original assignee: China Construction Fourth Engineering Division Corp Ltd; Sixth Construction Co Ltd of China Construction Fourth Engineering Division Co Ltd
Current assignee: China Construction Fourth Engineering Division Corp Ltd; Sixth Construction Co Ltd of China Construction Fourth Engineering Division Co Ltd
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2021-04-06
Anticipated expiration: 2030-10-12

Abstract

The utility model discloses a deep basal pit cuts drainage device, the device include along the fender pile that the deep basal pit periphery was arranged and set up respectively at the outside pit outside with deep basal pit inside precipitation well and the pit in precipitation well, be provided with the bearing structure who is connected with the fender pile at the oral area of deep basal pit, pour at the top of fender pile and hat the roof beam, it has the retaining wall to build by laying bricks or stones on hat the roof beam, the escape canal has been buried underground on the slope top backfill earthwork in the retaining wall outside, the sump pit has been buried underground according to the certain interval simultaneously, escape canal and sump pit connect. The utility model breaks through the traditional mode of adopting brick drainage ditches and water collecting wells, adopts half-corrugated pipe drainage ditches and steel water collecting wells to replace, overcomes the defects of material waste and long construction period of the traditional mode, and the water intercepting and draining device is made of shaped recyclable materials, and is convenient, rapid and efficient to install; the requirements of water interception and drainage of the slope top of the foundation pit can be met, sustainable use is facilitated, and the purposes of energy conservation and environmental protection are achieved.

Description

Deep foundation pit water intercepting and draining device

Technical Field

The utility model relates to a deep basal pit cuts drainage device belongs to industry and civil building engineering technical field.

Background

In the deep foundation pit constructional engineering work process, the internal and external precipitation of foundation pit and ground water interception facility have certainly existed for the internal and external water level of deep foundation pit keeps at certain elevation, at the drainage in-process that falls, foundation pit sloping top must set up and cut drainage system, and traditional way adopts brick drainage ditch and water collection well as cutting drainage system, and this kind of mode construction speed is slow, with high costs.

Disclosure of Invention

An object of the utility model is to provide a deep basal pit cuts drainage device, the device installation is convenient, quick, high-efficient, has both satisfied the drainage and the construction requirement that ground dams, can guarantee the safety control of deep basal pit construction again.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a deep basal pit cuts drainage device, includes the fender pile that arranges along the deep basal pit periphery and sets up respectively at the outside pit precipitation well and the pit in the pit inside of deep basal pit outside and deep basal pit, is provided with the bearing structure who is connected with the fender pile in the oral area of deep basal pit, has pour the hat roof beam at the top of fender pile, has built by laying bricks or stones retaining wall on the hat roof beam, has buried the escape canal in the slope top backfill earthwork in the retaining wall outside, has buried the sump pit according to the certain interval simultaneously, escape canal and sump pit connection, pour the slope top sclerosis layer in the slope top backfill earthwork, and slope top sclerosis layer has a certain slope and inclines to the escape canal direction, all is provided with the immersible pump in pit outer precipitation well and the pit in the precipitation well, and the immersible pump in pit outer precipitation well and the pit in the pit all is connected with the sump pit through the drain pipe.

Further, the retaining wall is higher than the slope top backfill earthwork outside the deep foundation pit.

Further, the elevation of escape canal and the oral area parallel and level of sump pit.

Since the technical scheme is used, the utility model discloses an advantage has below: the utility model breaks through the traditional mode of adopting brick drainage ditches and water collecting wells, adopts half-corrugated pipe drainage ditches and steel water collecting wells to replace, overcomes the defects of material waste and long construction period of the traditional mode, and the water intercepting and draining device is made of shaped recyclable materials, and is convenient, rapid and efficient to install; the requirements of water interception and drainage of the slope top of the foundation pit can be met, sustainable use is facilitated, and the purposes of energy conservation and environmental protection are achieved.

Drawings

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

fig. 2 is a schematic view of a connection structure of a drainage ditch and a collector well.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model provides a: referring to fig. 1, a deep foundation pit intercepting and draining device comprises fender posts 1 arranged along the periphery of a deep foundation pit, and an out-pit dewatering well 4 and an in-pit dewatering well 5 respectively arranged outside and inside the deep foundation pit, a supporting structure 2 connected with the fender post 1 is arranged at the opening part of the deep foundation pit, a crown beam 3 is poured at the top part of the fender post 1, a retaining wall 6 is built on the crown beam 3, a drainage ditch 8 is buried in the slope top backfill earthwork outside the retaining wall 6, meanwhile, water collecting wells 7 are buried at certain intervals, the drainage ditch 8 is connected with the water collecting wells 7, a slope top hardened layer 9 is poured on the slope top backfill earthwork, the slope top hardened layer 9 has a certain gradient and inclines towards the drainage ditch 8, submersible pumps 10 are arranged in the precipitation well 4 outside the pit and the precipitation well 5 in the pit, and the submersible pumps 10 in the precipitation well 4 outside the pit and the precipitation well 5 in the pit are connected with the water collecting well 7 through drain pipes 11. And the retaining wall 6 is higher than the slope top backfill earthwork at the outer side of the deep foundation pit. The elevation of the drainage ditch 8 is flush with the opening of the water collecting well 7.

When the deep foundation pit water intercepting and draining device is used for deep foundation pit water intercepting and draining construction, the following steps can be adopted:

firstly, arranging fender posts 1 along the periphery of a deep foundation pit, respectively digging an out-pit dewatering well 4 and an in-pit dewatering well 5 outside the deep foundation pit and inside the deep foundation pit, then pouring a crown beam 3 on the top of the fender posts 1, building a retaining wall 6 on the crown beam 3, and backfilling the top earthwork of the foundation pit at the outer side of the retaining wall 6; burying drainage ditches 8 in the slope top backfilling earthwork outside the retaining wall 6, burying water collecting wells 7 at certain intervals, connecting the drainage ditches 8 with the water collecting wells 7, and pouring a slope top hardened layer 9 on the slope top backfilling earthwork to ensure that the slope top hardened layer 9 has a certain gradient and inclines towards the drainage ditches 8 so as to facilitate water interception;

before earth excavation, putting a submersible pump 10 into the out-of-pit dewatering well 4 and the in-pit dewatering well 5, connecting the submersible pump 10 with the water collecting well 7 through a drain pipe 11, pumping water in the out-of-pit dewatering well 4 and the in-pit dewatering well 5 into the water collecting well 7, and then enabling water overflowing from the water collecting well 7 to flow into a third-stage sedimentation tank through a drainage ditch 8 and be discharged into a municipal pipe network after being purified by the third-stage sedimentation tank;

and step three, after the rainfall reaches the design requirement, arranging a supporting structure 2 connected with the fender post 1 at the opening part of the deep foundation pit, continuously excavating earthwork in the deep foundation pit after the supporting structure 2 reaches the design strength until the underground structure is constructed, and stopping the rainfall after the earthwork of the deep foundation pit is backfilled.

Referring to fig. 2, in the embodiment, the drainage ditch 8 is a half-bellows drainage ditch manufactured by cutting a corrugated pipe with a diameter of 300-350 mm from the middle; the water collecting well 7 is a steel water collecting well formed by welding stainless steel plates, semicircular notches are symmetrically formed in two sides of an opening of the water collecting well 7, and the drainage ditch 8 is connected to the semicircular notches.

In this embodiment, fender pile 1 is campshed + waterproof curtain, underground continuous wall, SMW worker method stake or TRD + I-steel, bearing structure 2 is concrete support, steel shotcrete or anchor rope, retaining wall 6 is brick retaining wall, concrete retaining wall or spray anchor.

In summary, the utility model breaks through the traditional mode of adopting brick drainage ditches and water collecting wells, adopts half-corrugated pipe drainage ditches and steel water collecting wells to replace, overcomes the defects of material waste and long construction period of the traditional mode, and is made of shaped recyclable materials, convenient, rapid and efficient to install; the requirements of water interception and drainage of the slope top of the foundation pit can be met, sustainable use is facilitated, and the purposes of energy conservation and environmental protection are achieved.

Claims

1. The utility model provides a deep basal pit cuts drainage device, includes fender pile (1) and the interior precipitation well (5) of pit (4) and pit that set up respectively outside the deep basal pit and inside the deep basal pit along the peripheral fender post (1) of arranging of deep basal pit, its characterized in that: be provided with bearing structure (2) of being connected with fender pile (1) at the oral area of deep basal pit, pour crown beam (3) at the top of fender pile (1), build by laying bricks or stones retaining wall (6) on crown beam (3), bury drainage ditch (8) underground on the slope top backfill earthwork in the retaining wall (6) outside, bury sump pit (7) according to a determining deviation simultaneously, drainage ditch (8) and sump pit (7) be connected, pour slope top sclerosis layer (9) on the slope top backfill earthwork, and slope top sclerosis layer (9) have certain slope and to the slope of drainage ditch (8) direction, all be provided with immersible pump (10) in precipitation well (5) outside the pit and in the pit, and immersible pump (10) in precipitation well (4) outside the pit and the pit in precipitation well (5) all are connected with sump pit (7) through drain pipe (11).

2. The deep foundation pit intercepting drainage device of claim 1, wherein: and the retaining wall (6) is higher than the slope top backfill earthwork at the outer side of the deep foundation pit.

3. The deep foundation pit intercepting drainage device of claim 1, wherein: the elevation of the drainage ditch (8) is flush with the opening of the water collecting well (7).