AU2021101264A4 - A foundation pit drainage system for flood control - Google Patents

A foundation pit drainage system for flood control Download PDF

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Publication number
AU2021101264A4
AU2021101264A4 AU2021101264A AU2021101264A AU2021101264A4 AU 2021101264 A4 AU2021101264 A4 AU 2021101264A4 AU 2021101264 A AU2021101264 A AU 2021101264A AU 2021101264 A AU2021101264 A AU 2021101264A AU 2021101264 A4 AU2021101264 A4 AU 2021101264A4
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AU
Australia
Prior art keywords
pit
drainage
support plate
sedimentation tank
vertical support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
AU2021101264A
Inventor
Shijun Chen
Dongwei Li
Jinling Liu
Qingrui Lu
Bo Wu
Masun Zeng
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
East China University of Science and Technology
Original Assignee
East China University of Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by East China University of Science and Technology filed Critical East China University of Science and Technology
Priority to AU2021101264A priority Critical patent/AU2021101264A4/en
Application granted granted Critical
Publication of AU2021101264A4 publication Critical patent/AU2021101264A4/en
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/0401—Gullies for use in roads or pavements
    • E03F5/0403—Gullies for use in roads or pavements with a sediment trap
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F1/00—Methods, systems, or installations for draining-off sewage or storm water

Abstract

The utility model discloses a pit drainage system for flood control, which belongs to the field of building construction drainage technology, including: pit sidewall drainage unit, pit bottom drainage unit and sedimentation unit; pit sidewall drainage unit includes a vertical support plate set on the pit sidewall, and the vertical support plate is set with a number of water outlet holes; pit bottom drainage unit includes a water collection ditch set corresponding to the vertical support plate, and the water collection ditch is set at the top elevation of the ditch is lower than the bottom of the pit; there are drainage pipes at both ends of the ditch, and one end of the drainage pipe is connected with the ditch, and the other end is set at the upper end of the side wall of the pit and connected with the pump; the sedimentation unit includes a sedimentation tank set on one side of the pit. The utility model provides a drainage system with simple structure, convenient construction and low construction cost, and at the same time, due to the setting of a filter, it is difficult for the garbage and debris carried by the flood to enter the drainage system, avoiding the blockage of the pit drainage system and improving the efficiency of the pit drainage system. Drawings 11 6 Drawing 2

Description

Drawings
11
6
Drawing 2
A foundation pit drainage system for flood control
Technical field
The utility model belongs to the technical field of building construction drainage,
and specifically relates to a foundation pit drainage system for flood prevention.
Background Art
During the construction period of a building project, the city where the long-term
precipitation or heavy rainfall cannot be discharged into rivers and ditches in time to
form surface water, resulting in accidents such as rising water level and river
breaching in the city, which will not only cause huge losses to the project itself, but
also cause incalculable personal and property losses to the people, with very serious
consequences. In order to avoid such dangerous accidents, over-standard flood water
is usually introduced into the pit and the pressure of flood discharge is relieved by
over-flow from the main pit.
After flood discharge, pit drainage is also an essential step, but for the center of
the city, although there are municipal rainwater and sewage networks laid in its
vicinity, the drainage capacity of these municipal rainwater and sewage networks
often cannot meet the needs of pit drainage; at the same time, foundation pit drainage
system is easily blocked by the garbage carried in the flood, which needs to be
cleaned by workers regularly; more importantly, the pit drainage will bring in a large
amount of particulate soil, which cannot meet the discharge requirements of
environmentalprotection.
Contents
In order to solve the above technical problems, the utility model adopts the
following technical solutions.
A pit drainage system for flood prevention, comprising: a pit sidewall drainage unit, a pit bottom drainage unit and a sedimentation unit.
The pit sidewall drainage unit includes a vertical support plate set on the pit sidewall, and the vertical support plate is set with a number of water outlet holes for draining the water in the soil of the pit sidewall to the bottom of the pit.
The drainage unit at the bottom of the pit includes a catchment ditch set corresponding to the vertical support plate, the catchment ditch is set at the bottom of the pit, the top elevation of the catchment ditch is lower than the bottom of the pit; drainage pipes are set at both ends of the catchment ditch, one end of the drainage pipes is connected to the catchment ditch, the other end is set at the upper end of the side wall of the pit and is connected to a drainage pump for discharging water from the catchment ditch to the sedimentation unit.
The sedimentation unit includes a sedimentation tank set on the side of the pit, and the sedimentation tank is used to collect the discharged water from the drainage pipe and integrate it into the sedimentation.
Further, a horizontal support plate is provided at the top of the vertical support plate away from the center of the pit, and reinforcement piles are provided at the bottom end of the vertical support plate and the bottom end of the horizontal support plate for reinforcing the support structure; the vertical support plate is provided with anchor rods, and the anchor rods are inserted in the soil of the pit side wall for strengthening the connection between the vertical support plate and the pit side wall.
Further, the outlet hole is provided with a first filter on the side of the inner wall of the pit, and the aperture of the first filter is smaller than the diameter of the soil particles in the pit; a second filter is provided at the top of the drainage ditch to prevent soil from falling into the drainage ditch; a third filter is provided at the end of the drainage pipe connected to the drainage ditch to prevent soil from being sucked into the drainage pump.
Further, two adjacent drainage pipes are combined to one place above the pit
sidewall through tee fittings and connected to the drainage pump; the drainage pipe
located above the pit sidewall is provided with a valve to control the flow of the
drainage pipe.
Further, the sedimentation unit also includes a pump and a pumping pipe set in
the sedimentation tank, one end of the pumping pipe is connected to the pump and the
other end extends outside the sedimentation tank; the sedimentation tank includes a
primary sedimentation tank, a secondary sedimentation tank and a tertiary
sedimentation tank connected in sequence, the primary sedimentation tank is
connected to the drainage pipe, and the pump is set in the tertiary sedimentation tank.
Beneficial effects:
The utility model provides a pit drainage system for flood prevention, in which
the pit drainage system combines pit support structure with drainage, and the drainage
system has a simple structure, easy construction and low construction cost, and at the
same time, because a filter is set in the system, it is difficult for the garbage and debris
carried in the flood to enter the drainage system, which avoids blockage of the pit
drainage system and improves the efficiency of the pit drainage system.
At the same time, the utility model drains the water discharged from the pit to the
pre-placed sedimentation tank, and the water stored in the sedimentation tank can be
used for subsequent washing of the dump truck, dust reduction or maintenance of
concrete, thus turning rainwater into treasure, which plays the role of saving resources
and improving the environmental image of the construction site, and truly embodies
the concept of green construction.
Brief description of the drawings
Drawing 1 is a schematic diagram of the structure of the pit drainage system
Drawing 2 is a schematic diagram of the back structure of the side wall of the pit.
Drawing 3 is a schematic diagram of part of the structure of the drainage pipe.
Drawing 4 shows the structure of the water outlet hole in the vertical support
plate.
Drawing 5 is a schematic diagram of the structure of the sedimentation tank
Wherein 1, pit; 2, vertical support plate; 3, horizontal support plate; 4, first filter
network; 5, second filter network; 6, catchment ditch; 7, drainage pipe; 8, drainage
pump; 9, valve; 10, outlet hole; 11, anchor; 12, reinforcement pile; 13, third filter
network; 14, primary sedimentation tank; 15, secondary sedimentation tank; 16,
tertiary sedimentation tank; 17, pump; 18, pumping pipe.
Details description of the Embodiments
Example 1
A pit drainage system for flood control, including: a pit sidewall drainage unit, a
pit bottom drainage unit and a sedimentation unit.
The pit sidewall drainage unit includes a vertical support plate 2 set on the pit
sidewall, and the vertical support plate 2 is provided with a number of outlet holes for
draining water in the soil of the pit sidewall to the bottom of the pit 1.
The drainage unit at the bottom of the pit includes a water collection trench 6 set
corresponding to the vertical support plate 2, the water collection trench 6 is set at the
bottom of the pit 1, and the top elevation of the water collection trench 6 is lower than
the bottom of the pit 1; a drainage pipe 7 is set at both ends of the water collection
trench 6, and one end of the drainage pipe 7 is connected to the water collection
trench 6, and the other end is set at the upper end of the side wall of the pit and
connected to the drainage pump 8 for discharging water from the water collection
trench 6 to the sedimentation unit.
The sedimentation unit includes a sedimentation tank set on one side of the pit 1, and the sedimentation tank is used to collect the discharged water from the drainage pipe 7 and to integrate it into the sedimentation.
In this embodiment, a horizontal support plate 3 is provided at the top of the vertical support plate 2 away from the center side of the pit 1, and a reinforcement pile 12 is provided at the bottom end of the vertical support plate 2 and the bottom end of the horizontal support plate 3 for reinforcing the support structure.
The vertical support plate 2 is also provided with anchor rods 11, which are inserted in the soil of the pit side wall to strengthen the connection between the vertical support plate 2 and the pit side wall.
The outlet hole 10 is provided with a first filter mesh 4 on the side of the inner wall of the pit 1, and the aperture diameter of the mesh of the first filter mesh 4 is smaller than the diameter of the soil particles of the pit 1.
The sedimentation unit includes a sedimentation tank set on one side of the pit 1, and the sedimentation tank is used to collect the discharged water from the drainage pipe 7 and to integrate it into the sedimentation.
In this embodiment, a horizontal support plate 3 is provided at the top of the vertical support plate 2 away from the center side of the pit 1, and a reinforcement pile 12 is provided at the bottom end of the vertical support plate 2 and the bottom end of the horizontal support plate 3 for reinforcing the support structure.
The vertical support plate 2 is also provided with anchor rods 11, which are inserted in the soil of the pit side wall to strengthen the connection between the vertical support plate 2 and the pit side wall.
The outlet hole 10 is provided with a first filter 4 on the side of the inner wall of the pit 1, and the aperture of the first filter 4 is smaller than the diameter of the soil particles of the pit 1. A second filter 5 is provided at the top of the water collection ditch 6 to prevent soil from falling into the water collection ditch 6.
The third filter 13 is provided at the end of the connection between the drainage pipe 7 and the catchment ditch 6 to prevent soil from being sucked into the drainage pump 8.
In this embodiment, two adjacent drainage pipes 7 are combined to one place and connected to the drainage pump 8 through tee fittings above the pit side wall of the pit.
The drainage pipe 7 located above the pit side wall is partially provided with a valve 9 for controlling the passage and disconnection of the drainage pipe 7.
The water in the soil on the side wall of the pit can flow out to the collection ditch 6 through the outlet hole 10, and the water at the bottom of the pit 1 can also flow to the collection ditch 6, and the water in the collection ditch 6 can be discharged by turning on the drainage pump 8.
The sedimentation unit also includes a pump 17 and a pumping pipe 18 set inside the sedimentation pond, one end of the pumping pipe 18 is connected to the pump 17 and the other end extends outside the sedimentation pond; the sedimentation pond includes a primary sedimentation pond 14, a secondary sedimentation pond 15 and a tertiary sedimentation pond 16 connected in sequence, the primary sedimentation pond is connected to the drainage pipe 7, and the pump 17 is set inside the tertiary sedimentation pond 16.
A sedimentation tank pit with a length-width-high size of 3 x 2 x 2 m is dug on one side of the pit 1, and then use 3mm thick scrap steel plate to weld a sedimentation tank of suitable size with the sedimentation tank pit, which placed in the pit.
The above is only a better implementation of the utility model, not any limitation of the technical scope of the utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical substance of the utility model, are still within the scope of the utility model technical solutions . It will be understood that the term "comprise" and any of its derivatives (eg comprises, comprising) as used in this specification is to be taken to be inclusive of features to which it refers, and is not meant to exclude the presence of any additional features unless otherwise stated or implied.
The reference to any prior art in this specification is not, and should not be taken
as, an acknowledgement or any form of suggestion that such prior art forms part of
the common general knowledge.

Claims (5)

  1. CLAIMS 1. A pit drainage system for flood control, characterized in that it comprises: a pit
    sidewall drainage unit, a pit bottom drainage unit and a sedimentation unit.
    Said pit sidewall drainage unit comprising a vertical support plate provided on
    the pit sidewall(2), the vertical support plate(2) provided with a number of water
    outlet holes for draining water in the soil of the pit sidewall to the bottom of the pit.
    The bottom drainage unit of the pit includes a catchment ditch (6) corresponding
    to the vertical support plate (2),The catchment ditch (6) is set at the bottom of the pit
    (1), the top elevation of the catchment ditch (6) is lower than the bottom of the pit
    (1);the catchment ditch (6) is provided with drainage pipes (7) at both ends, the
    drainage pipes (7) are connected to catchment ditch (6) at one end, and the other end
    is set at the upper end of the side wall of said pit, connected to a drainage pump (8)
    for discharging water from the catchment ditch (6) to the sedimentation unit.
    The sedimentation unit comprises a sedimentation tank set on the side of the pit
    (1), the sedimentation tank being used to collect the discharge water from the drain
    (7) and to incorporate it into the sedimentation.
  2. 2. The pit drainage system for flood control according to claim 1, characterized
    in that the top of the vertical support plate (2) is provided with a horizontal support
    plate (3) away from the center side of said pit (1), and the bottom end of the vertical
    support plate (2) and the bottom end of said horizontal support plate (3) are provided
    with reinforcement piles (12) for reinforcing the support structure; the vertical support
    plate (2) is provided with anchor rods (11) The anchors (11) are inserted in the soil of
    the pit sidewall to strengthen the connection between the vertical support plate (2) and
    the pit sidewall.
  3. 3. A pit drainage system for flood control according to claim 1, characterized in
    that the outlet hole (10) is provided with a first filter (4) on the side of the inner wall
    of said pit (1), the aperture diameter of the mesh of the first filter (4) is smaller than
    the diameter of soil particles in said pit (1); a second filter (5) is provided at the top of
    said catchment ditch (6) to prevent soil from falling into the catchment ditch (6); a
    third filter (13) is provided at the end of the drainage pipe (7) connected to said
    catchment ditch (6) to prevent soil from being drawn into said drainage pump (8). A
    third filter (13) is provided at the connecting end of the catchment ditch (6) to prevent
    soil in the catchment ditch (6) from being drawn into the drainage pump (8).
  4. 4. The pit drainage system for flood control according to claim 1, characterized
    in that two adjacent drainage pipes (7) are combined in one place above the pit wall
    on the side of the pit through tee fittings and connected to a drainage pump (8); the
    drainage pipe (7) located above the pit wall is partially provided with a valve (9) for
    controlling the on/off of the drainage pipe (7).
  5. 5. The pit drainage system for flood control according to claim 1, characterized
    in that the sedimentation unit further comprises a pump (17) and a pumping pipe (18)
    set inside the sedimentation tank, one end of the pumping pipe (18) being connected
    to the pump (17) and the other end extending outside the sedimentation tank; the
    sedimentation tank comprises a primary sedimentation tank (14), a secondary
    sedimentation tank (15) and a tertiary sedimentation tank (16) connected in sequence.
    The primary sedimentation tank is connected to the drainage pipe (7), and the pump
    (17) is set in the tertiary sedimentation tank (16).
    2021101264 1/4
    Drawing 1
    Drawing 2
AU2021101264A 2021-03-11 2021-03-11 A foundation pit drainage system for flood control Ceased AU2021101264A4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2021101264A AU2021101264A4 (en) 2021-03-11 2021-03-11 A foundation pit drainage system for flood control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU2021101264A AU2021101264A4 (en) 2021-03-11 2021-03-11 A foundation pit drainage system for flood control

Publications (1)

Publication Number Publication Date
AU2021101264A4 true AU2021101264A4 (en) 2021-05-06

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ID=75714400

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2021101264A Ceased AU2021101264A4 (en) 2021-03-11 2021-03-11 A foundation pit drainage system for flood control

Country Status (1)

Country Link
AU (1) AU2021101264A4 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114758139A (en) * 2022-06-16 2022-07-15 成都鹏业软件股份有限公司 Foundation pit accumulated water detection method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114758139A (en) * 2022-06-16 2022-07-15 成都鹏业软件股份有限公司 Foundation pit accumulated water detection method

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FGI Letters patent sealed or granted (innovation patent)
MK22 Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry