CN215759119U - Light well point dewatering system with pressure control valve body - Google Patents

Abstract

The utility model relates to a light well point dewatering system with a pressure control valve body, which is characterized in that: including elevartor shaft brick fetal membrane, multiunit rubber well point pipe, the rubber collector pipe, vacuum pump, deep-water pump and header tank, multiunit rubber well point pipe is buried underground in elevartor shaft soleplate bed course below ground, and set up at elevartor shaft brick fetal membrane inboard peripheral, every group rubber well point union coupling rubber collector pipe, wherein two sets of rubber well point pipes upwards stretch out to soleplate bed course through rubber collector pipe along one side elevartor shaft brick fetal membrane outer wall, another group rubber well point pipe extends elevartor shaft brick fetal membrane and rubber collector union coupling, rubber collector pipe stretches out to serve connection control valve and vacuum pump, vacuum pump intercommunication header tank, the deep-water pump is equipped with in the header tank. The advantages are that: the method provides convenient conditions for operation and construction in special environments, is particularly suitable for construction environments of building engineering with large volume of deep foundation pits and obvious rising of local water level, and is low in investment cost, simple, convenient and quick to operate and convenient to popularize.

Description

Light well point dewatering system with pressure control valve body

Technical Field

The utility model belongs to the technical field of engineering construction, and particularly relates to a light well point dewatering system with a pressure control valve body.

Background

The traditional light well point dewatering system is mainly composed of three parts, namely a rubber well point pipe, a rubber water collecting pipe and a vacuum pump; the conventional soil penetration depth of the rubber well point pipes is preferably controlled to be 6-8 m, the spacing between the rubber well point pipes is not more than 1.5 m, the number of the rubber well point pipes is controlled to be about 50, the rubber well point pipes are respectively connected with 1 rubber water collecting pipe with the whole length through a hose, and the rubber water collecting pipes are connected into a vacuum pump to form a group of complete dewatering systems. A plurality of groups of same precipitation systems form a precipitation system of the whole project, so that the precipitation purpose is achieved; the normal vacuum well point dewatering position is basically arranged at the position 1-2 meters away from the periphery of the foundation (the periphery of the foundation trench) for dewatering operation. After the construction of the building structure part below the normal water level is finished, the water pump is dismantled, the pipe fittings are disconnected, and the rubber well point pipes are sequentially recovered to finish the dewatering construction operation.

For example, in a certain construction project, the engineering foundation is a sandy soil layer and is close to the riverside by about 200 meters, the original design is that large-aperture ultra-deep pipe wells are adopted for dewatering, a Larsen steel sheet pile water-blocking maintenance structure is additionally arranged on the periphery of a foundation pit, and the purpose of dewatering is achieved through 2 measures. However, when the river is near the sea, the tide is frequent, and the water level rises quickly in a short time, so the precipitation measures cannot meet the precipitation requirement of local ultra-deep parts, and the construction is seriously influenced. In particular, the partial structure in the middle of the foundation slab is seriously affected by tide due to the lower elevation of the bottom slab, and particularly, during the concrete construction of the foundation slab, the foundation slab of the elevator shaft which does not reach the strength due to the rise of the water level causes serious defects in quality, thereby affecting the engineering quality and reducing the use function. In addition, because the foundation plate construction of elevartor shaft follows the wholeness principle, reduces back and connects a stubble proportion, prevents that the adventitious factor such as later stage from leaking, so the construction size is great relatively, if adopt traditional light-duty well point precipitation construction method, then can be with the whole pre-buried basis bottom of whole downcomer spare, cause the waste of a large amount of resources, the cost is high.

Disclosure of Invention

The utility model provides a quick and efficient dewatering mode for solving the technical problems in the prior art, and the light well point dewatering system with the pressure control valve body can ensure the engineering quality and the use function and reduce the construction cost.

The technical scheme adopted by the utility model for solving the technical problems in the prior art is as follows:

light-duty well point dewatering system with accuse pressure valve body, its characterized in that: the elevator shaft brick bed course comprises an elevator shaft brick bed course, a plurality of groups of rubber well point pipes, rubber water collecting pipes communicated with the rubber well point pipes, a vacuum water pump, a deep water pump and a water collecting tank, wherein the plurality of groups of rubber well point pipes are respectively embedded in a foundation below an elevator shaft foundation bottom plate cushion layer and are arranged close to the periphery of the inner side of the elevator shaft brick bed course, each group of rubber well point pipes are connected with the rubber water collecting pipes, two groups of rubber well point pipes extend upwards to the foundation bottom plate cushion layer along the outer wall of the elevator shaft brick bed course on one side through the rubber water collecting pipes, the other group of rubber well point pipes extend out of the elevator shaft brick bed course and are connected with the rubber water collecting pipes surrounding the outer wall of the elevator shaft brick bed course through elbows and reducing tees, a control valve and a vacuum water pump are connected to the extending end of each rubber water collecting pipe, the vacuum water pumps are arranged on one side outside the water collecting tank, and the water outlets of the vacuum water pumps are communicated with the water collecting tank through the rubber water collecting pipes, a deep water pump is arranged in the water collecting tank and is connected with a main drainage pipe through a drainage outlet.

The utility model can also adopt the following technical scheme:

preferably, the vacuum pump and the water collecting tank are provided with a bracket at the bottom, and the bracket is fixed on the foundation slab cushion.

Preferably, light well point dewatering system with accuse pressure valve body, its characterized in that: comprises an elevator shaft brick molding bed, a plurality of groups of rubber well point pipes, a rubber water collecting pipe communicated with the rubber well point pipes, a vacuum water pump, a deep water pump and a water collecting tank, the multiple groups of rubber well point pipes are respectively embedded in the foundation below the base plate cushion layer of the elevator well, and is arranged near the inner periphery of the elevator shaft brick bed film, each group of rubber well point pipes are connected with rubber water collecting pipes, wherein two groups of rubber well point pipes extend upwards to the base bottom plate along the outer wall of the elevator shaft brick molding bed on one side through rubber collecting pipes, the other group of rubber well point pipes extend out of the elevator shaft brick molding bed through elbows and reducing tees and are connected with the rubber collecting pipes surrounding the outer wall of the elevator shaft brick molding bed, the extending end of each rubber water collecting pipe is connected with a control valve and a vacuum pump, the vacuum pumps are all arranged on one side in the water collecting tank, a deep water pump is also arranged in the water collecting tank and is connected with a main drainage pipe through a drainage outlet.

Preferably, the bottom of the water collecting tank is provided with a support, and the support is fixed on a foundation slab cushion layer.

The utility model has the advantages and positive effects that: by adopting the technical scheme, the utility model sets the pressure control valve body on the rubber water collecting pipe and the vacuum pump and changes the original single and unidirectional drainage structure of the pipe body by adjusting the drainage link, controls the water quantity in each pipe to flow back and flow back, and simultaneously can prevent the groundwater from upwelling due to tide, thereby realizing the effect of one-valve double control. Therefore, the problem that the quality of concrete is influenced by the rising of the water level in the construction link can be successfully solved, and the integral engineering quality and the use function of the foundation slab structure are ensured. Through the structure, the terminal water pump can be moved forwards to the precipitation edge part, the amount of the precipitation point and the pipe fitting of the pump body middle part is reduced, the embedded waste part is effectively controlled, and the cost is reduced. The dewatering system is flexible in the position of erecting the pump body, so that a plurality of groups of centralized dewatering pipelines can be effectively centralized, and centralized drainage is carried out in a cluster mode to achieve the purpose of efficient and low-cost dewatering, and convenience conditions can be provided for operation and construction in special environments and different scenes. Through the secondary drainage, effectively reduce the total length volume of pre-buried body, reduce cost to reduce because of burying the too much adverse effect to foundation slab bearing capacity of pipeline underground. The technical scheme is particularly suitable for the construction environment of the building engineering with large volume of the deep foundation pit and obvious rising of the local water level, and has the advantages of low investment cost, simple, convenient and quick operation and convenient popularization.

Drawings

FIG. 1 is a horizontal plane view of example 1 of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a horizontal plane view of embodiment 2 of the present invention;

fig. 4 is a sectional view B-B of fig. 3.

In the figure: 1. a rubber well point pipe; 2. a reducing tee joint; 3. bending the pipe; 4. a rubber water collecting pipe; 5. a control valve; 6. a vacuum water pump; 7. elevator shaft brick moulding bed; 8. a deep water pump; 9. a main drain pipe; 10. a water collection tank; 11. a support; 12. a water outlet; 13. an elevator shaft floor cushion layer; 14. a foundation mat layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Example 1, referring to fig. 1 and 2,

light well point dewatering system with accuse pressure valve body, including elevartor shaft brick fetal membrane 7, multiunit rubber well point pipe 1, with the rubber collector pipe 4, vacuum pump 6, deep-water pump 8 and the header tank 10 of rubber well point pipe intercommunication, multiunit rubber well point pipe buries underground respectively in the ground of elevartor shaft bottom plate bed course 13 below, and sets up at the inboard periphery that is close to elevartor shaft brick fetal membrane 7, and rubber collector pipe 4 is connected to every group rubber well point pipe 1, and wherein two sets of rubber well point pipes upwards stretch out basic bottom plate bed course 14 along the elevartor shaft brick fetal membrane 7 outer wall of one side through rubber collector pipe, and another group rubber well point pipe passes through elbow 3 and reducing tee bend 2 and extends elevartor shaft brick fetal membrane 7 and is connected with the rubber collector pipe around elevartor shaft brick fetal membrane outer wall. The extending end of each rubber water collecting pipe is connected with a control valve 5 and a vacuum water pump 6, the vacuum water pumps are all arranged on one side outside the water collecting tank 10, the water outlets of the vacuum water pumps are communicated with the water collecting tank through the rubber water collecting pipes, a deep water pump 8 is arranged in the water collecting tank, and the deep water pump is connected with a main drainage pipe 9 through a drainage outlet 12. The main drainage pipe can adopt a water bag or a PVC reticulate hose.

In this embodiment, the vacuum pump and the water collecting tank are provided with a bracket 11 at the bottom, and the bracket is fixed on the foundation slab cushion 14.

In this embodiment, every 15 rubber well point pipes are a set of and are connected with a rubber collector pipe, and every rubber well point pipe is through reducing tee bend 2 and elbow 3 respectively with rubber collector pipe hot melt connection, and 1 control valve 5 is settled along the position about 2 meters of the outer wall upper back end of one side elevartor shaft brick fetal membrane (promptly rubber collector pipe stretches out the end) apart from elevartor shaft brick fetal membrane top at rubber collector pipe simultaneously, the elevation of control valve apart from basic bottom plate bed course 14 is 10cm, the corresponding vacuum pump of control valve intercommunication, constitute a set of precipitation system behind vacuum pump intercommunication header tank. And repeating the operations to connect all the pipelines to form 8 groups of precipitation systems, thereby achieving the purpose of precipitation.

Example 2, referring to fig. 3 and 4,

there is light-duty well point dewatering system of accuse pressure valve body, including elevartor shaft brick fetal membrane 7, multiunit rubber well point pipe 1, with the rubber collector pipe 4, vacuum pump 6, deep-water pump 8 and the header tank 10 of rubber well point pipe intercommunication, multiunit rubber well point pipe buries underground respectively in the ground of elevartor shaft bottom plate bed course 13 below, and sets up at the inboard periphery that is close to elevartor shaft brick fetal membrane 7, and rubber collector pipe 4 is connected to every group rubber well point pipe 1, and wherein two sets of rubber well point pipes upwards stretch out basic bottom plate bed course 14 along the elevartor shaft brick fetal membrane 7 outer wall of one side through rubber collector pipe, and another group rubber well point pipe passes through elbow 3 and reducing tee bend 2 and extends elevartor shaft brick fetal membrane 7 and is connected with the rubber collector pipe around elevartor shaft brick fetal membrane outer wall. The extending end of each rubber water collecting pipe is connected with a control valve 5 and a vacuum pump 6, the vacuum pumps are all arranged on one side in a water collecting tank 10, a deep water pump 8 is also arranged in the water collecting tank, and the deep water pump is connected with a main drainage pipe 9 through a drainage outlet 12. The main drainage pipe can adopt a water bag or a PVC reticulate hose.

In this embodiment, the support is equipped with to the header tank bottom, the support is fixed on the soleplate.

In this embodiment, every 15 rubber well point pipes are a set of and are connected with a rubber collector pipe, and every rubber well point pipe is through reducing tee bend 2 and elbow 3 respectively with rubber collector pipe hot melt connection, and 1 control valve 5 is settled along the position about 2 meters of the outer wall upper back end of one side elevartor shaft brick fetal membrane (promptly rubber collector pipe stretches out the end) apart from elevartor shaft brick fetal membrane top at rubber collector pipe simultaneously, the elevation of control valve apart from basic bottom plate bed course 14 is 10cm, the corresponding vacuum pump of control valve intercommunication, constitute a set of precipitation system behind vacuum pump intercommunication header tank. And repeating the operations to connect all the pipelines to form 8 groups of precipitation systems, thereby achieving the purpose of precipitation.

The working principle of the utility model is as follows:

firstly, determining the number of rubber well point pipes to be 120 according to water quantity; the longitudinal penetration depth is 2.5 m and 8 vacuum water pumps are arranged. When the precipitation is finished, the concrete of the foundation bottom plate of the elevator shaft is ensured to finish the final setting state, and meanwhile, the water amount in the pipe does not flow back after the drainage is stopped, and the water body does not upwelle along the rubber well point pipe due to the atmospheric negative pressure. (note: since the construction work is finished after the concrete of the precipitation part is finally set, the precipitation pipe body at the bottom is buried below the bottom of the foundation slab.)

The constructor determines the position of the well point: the method comprises the steps of determining that a first group of rubber well point pipes are arranged 50cm on the periphery of the inner side of the edge of a basic bottom plate of the elevator shaft through a design drawing, then arranging a second group of rubber well point pipes inwards along the first group of rubber well point pipes by 50cm, and finally arranging a third group of rubber well point pipes inwards by 50cm, so that 3 groups of annular drainage systems are formed. (note: since the precipitation construction can achieve the effect, the construction requirements can be achieved by measuring and positioning with a 50 m steel tape without the need of precise positioning of instruments.)

Drilling and placing a rubber well point pipe: firstly, a small-sized auger boring machine with the diameter of 18cm is used for drilling, a rubber well point pipe is vertically inserted after the depth of a formed hole reaches 2.5 m, and meanwhile, the gap around the well point is backfilled with original soil, so that the effect of dewatering is prevented from being influenced by the problem of air tightness. And repeating the operations until all the rubber well point pipes are constructed.

Installing a dewatering system: every 15 rubber well point pipes are a set of and are connected with a rubber collector pipe, every rubber well point pipe is respectively connected with the rubber collector pipe through reducing tee 2 and elbow 3 hot melt, 1 control valve 5 is settled at the position about 2 meters apart from elevator shaft brick fetal membrane top at the rubber collector pipe along one side elevator shaft brick fetal membrane outer wall upper back end (promptly rubber collector pipe stretches out the end) simultaneously, the elevation of control valve apart from basic bottom plate bed course 14 is 10cm, the corresponding vacuum pump of control valve intercommunication, constitute a set of precipitation system behind the vacuum pump intercommunication header tank. And repeating the operations to connect all the pipelines to form 8 groups of precipitation systems, thereby achieving the purpose of precipitation.

Centralized drainage: because the precipitation position is in the whole foundation slab middle part of building, it is far away from the foundation slab outward flange, all rubber collector pipes all bury the underground and can cause a large amount of wastes, increase construction cost, and the body is cavity moreover, is unfavorable for foundation slab lower part bearing capacity, influences whole construction quality, so concentrate precipitation in 2 meters department near precipitation position elevartor shaft brick fetal membrane upper edge, set up the header tank, discharge the water to the job site catch basin through the secondary concentrated drainage at last, and then retrieve and recycle.

Closing the control valve and stopping precipitation: because the elevator shaft structure is deep, multiple times of layered pouring are needed in the concrete construction process, and the pouring time of each layer is controlled to be about 2 hours before the initial setting of the concrete of the previous layer; the elevator shaft is divided into 4 layers for pouring, so when the last layer of concrete on the upper part of the wall body of the elevator shaft is poured, the concrete of the foundation bottom plate at the bottom of the elevator shaft reaches a final setting state, the elevator shaft has water-avoiding capacity, and at the moment, the precipitation can be stopped, so that the control valve is closed, the vacuum precipitation is stopped, the rubber water collecting pipe at the water outlet end of the control valve is cut off manually, the vacuum water pump and the secondary drainage device are removed simultaneously, then the concrete is poured, and the concrete pouring construction of the whole foundation bottom plate is completed.

The embodiments of the utility model that are illustrated in the drawings are exemplary only and should not be taken as limiting the utility model.

Claims (4)

1. The utility model provides a light-duty well point dewatering system with accuse pressure valve body which characterized in that: the elevator shaft brick bed course comprises an elevator shaft brick bed course, a plurality of groups of rubber well point pipes, rubber water collecting pipes communicated with the rubber well point pipes, a vacuum water pump, a deep water pump and a water collecting tank, wherein the plurality of groups of rubber well point pipes are respectively embedded in a foundation below an elevator shaft foundation bottom plate cushion layer and are arranged close to the periphery of the inner side of the elevator shaft brick bed course, each group of rubber well point pipes are connected with the rubber water collecting pipes, two groups of rubber well point pipes extend upwards to the foundation bottom plate cushion layer along the outer wall of the elevator shaft brick bed course on one side through the rubber water collecting pipes, the other group of rubber well point pipes extend out of the elevator shaft brick bed course and are connected with the rubber water collecting pipes surrounding the outer wall of the elevator shaft brick bed course through elbows and reducing tees, a control valve and a vacuum water pump are connected to the extending end of each rubber water collecting pipe, the vacuum water pumps are arranged on one side outside the water collecting tank, and the water outlets of the vacuum water pumps are communicated with the water collecting tank through the rubber water collecting pipes, a deep water pump is arranged in the water collecting tank and is connected with a main drainage pipe through a drainage outlet.

2. The light duty well point dewatering system with a pressure control valve body of claim 1, wherein: and a support is arranged at the bottom of the vacuum water pump and the water collecting tank and is fixed on the foundation slab cushion.

3. The utility model provides a light-duty well point dewatering system with accuse pressure valve body which characterized in that: comprises an elevator shaft brick molding bed, a plurality of groups of rubber well point pipes, a rubber water collecting pipe communicated with the rubber well point pipes, a vacuum water pump, a deep water pump and a water collecting tank, the multiple groups of rubber well point pipes are respectively embedded in the foundation below the base plate cushion layer of the elevator well, and is arranged near the inner periphery of the elevator shaft brick bed film, each group of rubber well point pipes are connected with rubber water collecting pipes, wherein two groups of rubber well point pipes extend upwards to the cushion layer of the base bottom plate along the outer wall of the elevator shaft brick molding bed on one side through rubber water collecting pipes, the other group of rubber well point pipes extend out of the elevator shaft brick molding bed through elbows and reducing tees and are connected with the rubber water collecting pipes surrounding the outer wall of the elevator shaft brick molding bed, the extending end of each rubber water collecting pipe is connected with a control valve and a vacuum pump, the vacuum pumps are all arranged on one side in the water collecting tank, a deep water pump is also arranged in the water collecting tank and is connected with a main drainage pipe through a drainage outlet.

4. The light duty well point dewatering system with a pressure control valve body of claim 3, wherein: the bottom of the water collecting tank is provided with a support which is fixed on the foundation slab cushion layer.

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