CN217267576U

CN217267576U - Deep foundation pit dewatering device

Info

Publication number: CN217267576U
Application number: CN202220405369.0U
Authority: CN
Inventors: 王明超; 刘宝堂
Original assignee: China MCC17 Group Co Ltd
Current assignee: China MCC17 Group Co Ltd
Priority date: 2022-02-24
Filing date: 2022-02-24
Publication date: 2022-08-23
Anticipated expiration: 2032-02-24

Abstract

The utility model discloses a deep foundation pit dewatering device, which relates to the technical field of deep foundation pit underground dewatering and aims to solve the problem that the deep foundation pit dewatering device can not work efficiently for a long time; the utility model comprises a pipe well, a sewage pump is arranged in the pipe well, the water outlet end of the sewage pump is connected with a drain pipe for draining water out of the pipe well, the outer side of the upper end of the pipe well is provided with a bearing platform, the upper end of the pipe well is provided with a lifting device, the fixed end of the lifting device is fixedly connected with the bearing platform, the upper end of the sewage pump is fixedly connected with a nylon rope, and the nylon rope is in transmission connection with the movable end of the lifting device through the nylon rope for driving the sewage pump to lift; the utility model has the advantages of simple and reasonable structure, be provided with elevating gear and can drive the sewage pump lift to mix the sedimentary silt in shaft bottom, avoid blockking up and be difficult to continue precipitation work, adopt automatically controlled back can also realize unmanned on duty, can guarantee really that deep basal pit precipitation lasts the high efficiency and goes on.

Description

Deep foundation pit dewatering device

Technical Field

The utility model relates to a deep basal pit precipitation technical field specifically is a deep basal pit precipitation device.

Background

Along with the development of economy, resident's residence is more and more concentrated, and then form the district scale bigger and bigger, in order to satisfy service function's needs, generally all be equipped with one deck or multilayer basement (civil air defense engineering or basement), along with the general application of functional basements such as underground market, underground parking garage, must drop the water level to the beneath 500mm of basic bedding bottom elevation in underground works work progress, just can carry out foundation ditch earthwork excavation, each process construction of basement, how to guarantee that foundation ditch precipitation lasts high-efficiently becomes the problem that design and construction must solve. In the past, drainage time is increased, the lift of a drainage pump is increased, and the number of dewatering wells is increased. In the dewatering and drainage process, the dewatering well is usually good in effect in the early stage, and the dewatering effect is greatly reduced due to blockage of a water pump and a water pipe caused by sludge deposition in the dewatering well in the later stage, so that the long-term dewatering effect cannot be achieved.

In the deep foundation pit dewatering practice, in order to achieve a long-term dewatering effect, factors such as project geological exploration reports, the caliber of a drainage pump, the lift and the like are referred, and the depth and the number of dewatering wells are obtained through calculation to determine a construction scheme. But how to guarantee long-term efficient work is still difficult to solve. Therefore, a deep foundation pit dewatering device is needed to solve the problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a deep basal pit dewatering device to solve the problem that deep basal pit dewatering device can not work high-efficiently for a long time.

In order to achieve the above object, the utility model provides a following technical scheme: a deep foundation pit dewatering device comprises a pipe well, wherein a sewage pump is arranged in the pipe well, a water outlet end of the sewage pump is connected with a water discharge pipe and used for discharging water to the outside of the pipe well, a bearing platform is arranged on the outer side of the upper end of the pipe well, a lifting device is arranged on the upper end of the pipe well, the fixed end of the lifting device is fixedly connected with the bearing platform, and a nylon rope is fixedly connected to the upper end of the sewage pump and is in transmission connection with the movable end of the lifting device through the nylon rope and used for driving the sewage pump to lift.

Preferably, the lifting devices are at least two and are respectively positioned at two sides of the upper end of the pipe well, the upper ends of the two lifting devices are fixedly provided with horizontally arranged supporting pieces, the middle parts of the two lifting devices coincide with the central line of the pipe well, and the upper ends of the nylon ropes are fixedly connected with the middle parts of the supporting pieces.

Preferably, the lifting device is a jack.

Preferably, a third-level box is further arranged above the pipe well, and a power line of the sewage pump is electrically connected with the third-level box.

Preferably, the lifting device is an electric control hydraulic lifting column, the third-stage box is further provided with a control circuit, the lifting device is electrically connected with the control circuit, and the control circuit comprises a timing switch and is used for starting the lifting operation of the lifting device at regular intervals.

Preferably, the outer side of the upper end of the pipe well is further provided with a drainage ditch, and one end, far away from the sewage pump, of the drainage pipe is communicated to the drainage ditch.

Preferably, the drain pipe is a PE pipe.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this deep basal pit dewatering device is provided with elevating gear and can drives the sewage pump lift to mix the sedimentary silt in shaft bottom, avoid blockking up and be difficult to continue dewatering work, overcome long-term because of dewatering not in place cause the foundation ditch side slope to produce potential safety hazards such as infiltration, reduced the erosion and the buoyancy of groundwater to underground structures, guaranteed construction quality.

2. This deep basal pit dewatering device, simple structure is reasonable, can also realize unmanned on duty after adopting automatically controlled, can guarantee really that deep basal pit dewatering lasts high-efficient going on, has reduced originally and has chooseed for use the resource and the cost waste of more high-power drain pump for the purpose of improving dewatering ability.

3. The deep foundation pit dewatering device, equipment and materials such as a sewage pump and a PE pipe can be recycled, so that the energy-saving and environment-friendly effects are better; different from the defects that the sail water distribution pipe in the traditional dewatering process has low strength or the steel pipe is easy to rust and the like, the PE pipe has the advantages of high strength, corrosion resistance, convenience in installation and the like.

Drawings

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

In the figure: 1. a third-stage box; 2. a support member; 3. a bearing table; 4. a lifting device; 5. a pipe well; 6. a nylon cord; 7. a power line; 8. a drain pipe; 9. a sewage pump; 10. and (7) a drainage ditch.

Detailed Description

As shown in fig. 1, the deep foundation pit dewatering device comprises a pipe well 5, a sewage pump 9 is arranged in the pipe well 5, a water outlet end of the sewage pump is connected with a water discharge pipe 8 for discharging water out of the pipe well 5, a bearing platform 3 is arranged on the outer side of the upper end of the pipe well 5, a lifting device 4 is arranged on the upper end of the pipe well, the fixed end of the lifting device 4 is fixedly connected with the bearing platform 3, a nylon rope 6 is fixedly connected to the upper end of the sewage pump 9, and the nylon rope 6 is in transmission connection with the movable end of the lifting device 4 and used for driving the sewage pump 9 to lift.

The lifting devices 4 are at least two and are respectively positioned at two sides of the upper end of the pipe well 5, at the moment, the bearing tables 3 can be two and are respectively positioned at two sides of the upper end of the pipe well 5, or can be annularly wound around the outer side of the upper end of the pipe well 5 for a circle, the upper ends of the two lifting devices 4 are fixedly provided with the supporting pieces 2 which are horizontally arranged, the middle parts of the two lifting devices 4 are superposed with the central line of the pipe well 5, and the upper ends of the nylon ropes 6 are fixedly connected with the middle parts of the supporting pieces 2; of course, there may be more lifting devices 4, and the support member 2 may be adjusted according to the number and position of the lifting devices 4, such as a straight rod, three welding rods at 120 ° angles to each other, a circular ring, etc.

In a preferred embodiment, the lifting device 4 may be a jack.

For convenient safety management, the top of the pipe well 5 is also provided with a third-stage box 1, and a power line 7 of a sewage pump 9 is electrically connected with the third-stage box, on the basis, the lifting device 4 is preferably an electric control hydraulic lifting column, and other electric control lifting devices such as a motor push rod and an electric control jack can be adopted.

In addition, a drainage ditch 10 is arranged outside the upper end of the tube well 5, and one end of the drainage pipe 8, which is far away from the sewage pump 9, is communicated to the drainage ditch 10.

Example (b):

the method comprises the following steps: according to a foundation pit dewatering scheme and a drawing, a pipe well 5 is constructed, a brick masonry is constructed on the periphery of the upper opening of the pipe well 5 to serve as a bearing platform 3 to protect the upper opening of the pipe well 5, lifting devices 4 are installed on two sides of the upper opening of the pipe well 5, and a batten cross arm is fixedly arranged on the lifting devices to serve as a supporting piece 2;

step two: a sewage pump 9 is arranged in the downcomer well 5 close to the bottom of the well (the water yield is slightly larger than the permeation quantity of underground water);

step three: selecting a PE drain pipe 8 with the caliber matched with that of the sewage pump 9, connecting and fixing the PE drain pipe with the water outlet of the sewage pump 9, and communicating the other end of the PE drain pipe with a drainage ditch 10 at the top of the foundation pit;

step four: a power cord 7 of the sewage pump 9 is connected into the three-stage tank 1 to be used as a working switch of the sewage pump 9;

step five: one end of a nylon rope 6 is fixedly connected with a sewage pump 9, and the other end of the nylon rope is tied to the middle of a batten cross arm of a wellhead;

step six: the method is characterized in that the sludge at the bottom of the downcast pipe well 5 is cleaned regularly (generally a week/time) according to the sludge deposition condition in the downcast pipe well 5, and the specific method comprises the following steps: a sewage pump 9 is repeatedly lifted and lowered (the height is not more than 300mm) by a PE drain pipe 8, so that sludge at the bottom of the well is driven to be lifted and pumped out of the well along with precipitation work to achieve the effect of removing the sludge at the bottom of the pipe well 5;

step seven: and (5) continuing the precipitation operation until all earthwork backfilling of the underground engineering is finished and precipitation is not needed any more, stopping the precipitation operation, and recycling equipment and materials such as a sewage pump 9, a PE (polyethylene) drain pipe 8 and the like.

The main points are as follows: the connection between the PE drain pipe 8 and the water outlet of the sewage pump 9 is firm and reliable, and the PE drain pipe is guaranteed not to be separated during repeated lifting and lowering so that the precipitation work cannot be carried out.

Trial implementation in this construction regularly with PE pipe promote repeatedly, transfer the method clearance bottom silt of sewage pump, prevent to influence the working property of precipitation well because of bottom silt deposit, guarantee that precipitation work lasts high-efficient the going on for a long time, reached anticipated precipitation effect, both guaranteed the construction quality of underground works, eliminated the potential safety hazard of relevant foundation engineering again, improved the efficiency of construction simultaneously.

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

The parts of the present invention not described in detail are the known techniques of those skilled in the art.

Claims

1. The utility model provides a deep basal pit precipitation apparatus, includes tube well (5), is provided with sewage pump (9) in tube well (5), and its play water end is connected with drain pipe (8) and is used for discharging water outside tube well (5), its characterized in that: the bearing platform (3) is arranged on the outer side of the upper end of the pipe well (5), the lifting device (4) is arranged on the upper end of the pipe well, the fixed end of the lifting device (4) is fixedly connected with the bearing platform (3), the nylon rope (6) is fixedly connected to the upper end of the sewage pump (9), and the nylon rope (6) is in transmission connection with the movable end of the lifting device (4) and used for driving the sewage pump (9) to lift.

2. A deep foundation pit dewatering apparatus according to claim 1, wherein: elevating gear (4) are equipped with two at least, and the two is located the upper end both sides department of tube well (5) respectively, and the upper end of two elevating gear (4) is fixed with support piece (2) that the level set up, and the central line coincidence of its middle part and tube well (5), the upper end of nylon rope (6) and the middle part fixed connection of support piece (2).

3. A deep foundation pit dewatering apparatus as claimed in claim 1 or claim 2, wherein: the lifting device (4) is a jack.

4. A deep foundation pit dewatering apparatus according to claim 1 or claim 2, wherein: and a tertiary tank (1) is also arranged above the pipe well (5), and a power line (7) of a sewage pump (9) is electrically connected with the tertiary tank.

5. A deep foundation pit dewatering apparatus as claimed in claim 4, wherein: the lifting device (4) is an electric control hydraulic lifting column or a motor push rod, a control circuit is further arranged at the position of the three-stage box (1), the lifting device (4) is electrically connected with the control circuit, and the control circuit comprises a timing switch and is used for starting the lifting operation of the lifting device (4) at regular intervals.

6. The deep foundation pit dewatering apparatus of claim 1, wherein: and a drainage ditch (10) is also arranged on the outer side of the upper end of the pipe well (5), and one end, far away from the sewage pump (9), of the drainage pipe (8) is communicated to the drainage ditch (10).

7. The deep foundation pit dewatering apparatus of claim 1, wherein: the drain pipe (8) is a PE pipe.