CN207147941U - Curtain withdrawal device and curtain withdrawal system - Google Patents

Abstract

A curtain foundation pit pumping device and a curtain foundation pit pumping system relate to the field of foundation pit pumping devices. The curtain foundation pit pumping device includes a box body and at least one pore water pressure gauge arranged in the box body. The two ends of the box body are respectively connected with a water inlet device and a water pumping device. The box body is provided with a partition movable along its length direction. The water curtain, the water-proof curtain divides the box into the first chamber and the second chamber, and there is a channel connecting the first chamber and the second chamber between the water-proof curtain and the bottom wall of the box. A first water bag and a second water bag are respectively provided. The curtain foundation pit pumping device provided by the utility model can be used for simulating and studying the law of influence of the buried depth ratio of the suspended water-stop curtain on the precipitation of the foundation pit. The utility model also provides a curtain foundation pit pumping system comprising the above-mentioned curtain foundation pit pumping device.

Description

Curtain foundation pit pumping device and curtain foundation pit pumping system

technical field

The utility model relates to the field of foundation pit pumping devices, in particular to a curtain foundation pit pumping device and a curtain foundation pit pumping system.

Background technique

In the foundation pit engineering, in order to ensure that the earthwork excavation and foundation construction are in a dry state or to improve the stability of the foundation pit slope, the method of precipitation is often used to reduce the groundwater level in the pit or inside and outside the pit to below the excavation surface, but as the groundwater level The effective self-gravity stress of the soil below the original water level in the foundation will also increase, which will easily lead to the consolidation of the foundation soil, and then cause uneven settlement, inclination, cracking, etc. of the ground and buildings within the area affected by the precipitation. endanger its safety and normal use. In order to eliminate the impact of foundation pit precipitation on the surrounding environment, water-stop curtains are usually set around the foundation pit to basically limit the range of precipitation influence within the foundation pit. However, since the foundation pit is a stress field and a displacement field, it is also a complex seepage In order to ensure the safety of the foundation pit and the surrounding environment after setting the water-stop curtain, it is necessary to correctly analyze the seepage field of the foundation pit.

Utility model patent 201610129898.1 discloses a transparent soil test device for simulating groundwater seepage in the dewatering confined aquifer of a foundation pit, which includes a model box, a cover plate set in the model box, and a wooden board for simulating the ground connection wall, which is connected to the model box The water tank assembly for controlling the water level of the pressurized water on both sides, and the piezometric tube system for measuring the water pressure of formations at different depths are connected to the back of the model box. This test device can directly observe the seepage path of the water flow around the water-stop curtain, and accurately analyze the seepage path law and seepage velocity and other related parameters through the photos taken by the high-speed camera. However, this device cannot simulate the precipitation of the foundation pit when the suspended water-stop curtain is installed, and it cannot simulate the influence of the different depths of the water-stop curtain on the precipitation of the foundation pit.

Therefore, there is a need for a device for studying the influence of the buried depth ratio of the suspended water-stop curtain on the precipitation of the foundation pit.

Utility model content

The purpose of the utility model is to provide a curtain foundation pit pumping device, which can be used to simulate and study the law of influence of the buried depth ratio of the suspended water-stop curtain on the foundation pit precipitation.

Another object of the present utility model is to provide a curtain foundation pit pumping system, which can study the law of the foundation pit precipitation under the water-stop curtain.

Embodiments of the utility model are achieved in that:

A curtain foundation pit pumping device, which includes a box body and at least one pore water pressure gauge arranged in the box body, the two ends of the box body are respectively connected with a water inlet device and a water pumping device, and the box body is equipped with There is a water-proof curtain that can move along its length, and the water-proof curtain divides the box body into a first cavity and a second cavity, and a communication station is provided between the water-proof curtain and the bottom wall of the box body. The channels of the first chamber and the second chamber are respectively provided with a first water bag and a second water bag in the first chamber and the second chamber.

In a preferred embodiment of the present utility model, the above-mentioned first water bag and the second water bag are respectively communicated with water pipes penetrating out of the box.

In a preferred embodiment of the present utility model, a flow meter is also provided in the passage.

In a preferred embodiment of the present invention, at least one side wall of the above-mentioned box is made of transparent material.

In a preferred embodiment of the present utility model, water-proof rubber strips are respectively arranged between the two sides of the above-mentioned water-proof curtain and the inner walls of both sides of the box body.

In a preferred embodiment of the present invention, the above-mentioned box body is also provided with two porous plates respectively located on both sides of the water-proof curtain, and the two porous plates are respectively formed into the inner walls of the two ends of the box body. A water chamber and a water pumping chamber, the water inlet chamber communicates with the water inlet device, and the water pumping chamber communicates with the water pumping device.

In a preferred embodiment of the present utility model, the water inlet device includes a water inlet box and a first flow meter communicating with the water inlet box and the box body.

In a preferred embodiment of the present utility model, the water inlet device further includes a lifting bracket for lifting the water inlet box.

In a preferred embodiment of the present utility model, the above-mentioned pumping device includes a water storage tank, a second flow meter, and a constant-pressure outflow device connected in sequence, and the constant-pressure outflow device communicates with the tank.

The utility model also provides a curtain foundation pit pumping system, which includes the above-mentioned curtain foundation pit pumping device.

The beneficial effects of the embodiment of the utility model are: the curtain foundation pit pumping device provided by the embodiment of the utility model includes a box body and at least one pore water pressure gauge arranged in the box body, and the two ends of the box body are respectively connected with a water inlet device and Pumping device, the box is equipped with a water-proof curtain that can move along its length. The water-proof curtain divides the box into the first chamber and the second chamber. The channels of the chamber and the second chamber are respectively provided with a first water bag and a second water bag in the first chamber and the second chamber. The curtain foundation pit pumping device provided by the utility model can be used for simulating and studying the law of influence of the buried depth ratio of the suspended water-stop curtain on the precipitation of the foundation pit. The utility model also provides a curtain foundation pit pumping system, which can study the precipitation law of the foundation pit under the water-stop curtain.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly introduced in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

Fig. 1 is the structural representation of the curtain foundation pit pumping device that the utility model embodiment 1 provides;

Fig. 2 is the plan view of box body in the utility model embodiment 1;

Fig. 3 is the schematic structural diagram of the curtain foundation pit pumping system provided by the utility model embodiment 2;

Fig. 4 is a top view of the box body in Embodiment 2 of the present utility model.

In the figure: 001-curtain foundation pit pumping device; 002-curtain foundation pit pumping device; 003-curtain foundation pit pumping system; 100-box; 101-bottom plate; 102-side plate; 103-end plate; 104-cover plate 110-water barrier curtain; 120-first chamber; 121-first water bag; 130-second chamber; Water rubber strip; 180-porous plate; 181-water inlet chamber; 182-pumping chamber; 200-pore water pressure gauge; 300-water inlet device; 310-water inlet tank; 320-first flow meter; 400-pumping device; 410-water storage tank; 420-second flow meter; 430-constant pressure outflow device; 440-bracket; 450-roller; 500-camera.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the product of the utility model is used. It is only for the convenience of describing the utility model and simplifying the description, rather than Any indication or implication that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should not be construed as limiting the invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the present utility model, it should also be noted that, unless otherwise specified and limited, the terms "setting", "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection , can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediary, and can be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "below" a second feature may include direct contact between the first and second features, and may also include the first and second features being in direct contact with each other. The features are not in direct contact but through another feature between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

Example 1

Please refer to Figures 1 and 2, the present embodiment provides a curtain foundation pit pumping device 001, which includes a box body 100 and at least one pore water pressure gauge 200 disposed in the box body 100, the two ends of the box body 100 The water inlet device 300 and the water pumping device 400 are connected respectively, and the box body 100 is provided with a water-proof curtain 110 which can move along its length direction, and the water-proof curtain 110 divides the box body 100 into a first cavity 120 and a second cavity 130, A channel 140 connecting the first cavity 120 and the second cavity 130 is provided between the water-proof curtain 110 and the bottom wall of the box body 100, and the first cavity 120 and the second cavity 130 are respectively provided with a first water bladder 121 and a second water bladder. The bladder 131 , the first water bladder 121 and the second water bladder 131 are respectively communicated with a water pipe 150 penetrating out of the box body 100 . In this embodiment, the box body 100 is composed of a bottom plate 101, two side plates 102 and two end plates 103 connected. In addition, the top of the box body 100 also has a cover plate 104 that can open or close the inside of the box body 100, a first water bag 121 and The second water bag 131 is respectively connected with the water pipe 150 extending out of the box body 100 after penetrating the cover plate 104. Fourteen pore water pressure gauges 200 are arranged in the box body 100, and the first cavity 120 and the second cavity 130 are respectively There are two rows of pore water pressure gauges 200 in the upper and lower rows, and the two ends of the water-proof curtain 110 are detachably connected to the two side plates 102 of the box body 100 through bolts.

The curtain foundation pit pumping device 001 provided in this embodiment can simulate and study the law of influence of the buried depth ratio of the suspended water-stop curtain on the foundation pit precipitation. When the curtain foundation pit pumping device 001 is in use, first open the cover plate 104 and take out the first water bag 121 and the second water bag 131, then fill the first cavity 120 and the second cavity 130 with soil and embed fourteen holes Water pressure gauge 200, then place the first water bag 121 and the second water bag 131 on the soil layer in the first cavity 120 and the second cavity 130 to apply pressure and cover the cover plate 104, at this time, the water inlet device can be used 300 passes water into the bottom of one end of the box body 100. After the water enters the soil layer in the first cavity 120 in the box body 100, it penetrates and flows into the second cavity through the channel 140 provided between the water-proof curtain 110 and the bottom wall of the box body 100. The soil layer in the cavity 130 is finally pumped out from the bottom of the other end of the box body 100 by the pumping device 400. At this time, researchers can study the water pressure change of the foundation pit by collecting the soil layer pressure detected by fourteen pore water pressure gauges 200. Researchers can also adjust the pressure on the soil layer in the first chamber 120 and the second chamber 130 by passing water into the first water bag 121 and the second water bag 131, or adjust the height of the water-proof curtain 110 to adjust the water-proof The size of the channel 140 between the curtain 110 and the bottom wall of the box body 100, or adjust the water-proof curtain 110 to move along the length direction of the box body 100 to adjust the volume change of the first chamber 120 and the second chamber 130, so as to further study the suspension type The effect of buried depth ratio, buried position and soil force of water-stop curtain on precipitation and seepage pressure of foundation pit.

A flow meter 160 is also provided in the channel 140 . The flow meter 160 set in the channel 140 can further detect the flow rate of the water penetrating through the channel 140, so as to facilitate the researchers to collect data to study the buried depth ratio and buried position of the suspended water-stop curtain on the penetration of foundation pit precipitation.

Water-proof rubber strips 170 are respectively arranged between the two sides of the water-proof curtain 110 and the inner walls of both sides of the box body 100 . The water-proof rubber strips 170 arranged on both sides of the water-proof curtain 110 and the box body 100 can improve the watertightness, prevent water from penetrating from both sides of the water-proof curtain 110, affect the correctness of the test results, and ensure the accuracy of data collection.

The box body 100 is also provided with two porous plates 180 respectively located on both sides of the water-proof curtain 110. The two porous plates 180 and the inner walls at both ends of the box body 100 respectively form a water inlet chamber 181 and a pumping chamber 182. The water inlet chamber 181 It communicates with the water inlet device 300 , and the water pumping cavity 182 communicates with the water pumping device 400 . The two perforated plates 180 arranged in the box body 100 respectively form a water inlet cavity 181 and a water pumping cavity 182 with the inner walls of both ends of the box body 100. Infiltrate into the first cavity 120, and infiltrate the water in the second cavity 130 into the pumping cavity 182 and then pump it out through the pumping device 400, which can simulate the seepage water pressure in the foundation pit and ensure accurate data collection.

The water inlet device 300 includes a water inlet box 310 , a first flow meter 320 communicating with the water inlet box 310 and the tank body 100 , and a lifting bracket 330 for lifting the water inlet box 310 . After adding water to the water inlet tank 310, researchers can use the lifting bracket 330 to raise the height of the water inlet tank 310, so that the water in the water inlet tank 310 flows into the water inlet chamber in the box body 100 after passing through the first flow meter 320 In 181, the height of the water inlet tank 310 can be controlled through the lifting bracket 330 to adjust the water pressure of the water inlet, and the water volume per unit time passing into the tank 100 can be checked through the first flow meter 320, which is convenient for researchers to adjust.

The water pumping device 400 includes a water storage tank 410 , a second flow meter 420 and a constant pressure outflow device 430 connected in sequence, and the constant pressure outflow device 430 communicates with the tank 100 . The constant pressure outflow device 430 in this embodiment is a constant pressure valve. Through the constant pressure outflow device 430, the water in the pumping chamber 182 can be discharged at a constant pressure, and then stored in the water storage tank 410 after passing through the second flow meter 420. The constant pressure outflow device can ensure that the water in the pumping chamber 182 flows out at a constant pressure, By simulating the seepage water pressure of the foundation pit, the second flow meter 420 can check the water volume per unit time passing into the water storage tank 410, which is convenient for researchers to make statistics and research.

Example 2

Please refer to Fig. 3 and Fig. 4, the present embodiment provides a curtain foundation pit pumping system 003, which includes a bracket 440 and a curtain foundation pit pumping device 002 arranged on the bracket 440, ten rollers are connected to the bottom of the bracket 440 450. The curtain foundation pit pumping device 002 includes a box body 100 and fourteen pore water pressure gauges 200 arranged in the box body 100. The two ends of the box body 100 are respectively connected with a water inlet device 300 and a water pumping device 400. The box body 100 is equipped with There is a water-proof curtain 110 that can move along its length direction. The water-proof curtain 110 divides the box body 100 into a first cavity 120 and a second cavity 130. The channel 140 of the cavity 120 and the second cavity 130, the first cavity 120 and the second cavity 130 are respectively provided with a first water bag 121 and a second water bag 131, and the first water bag 121 and the second water bag 131 are respectively communicated with The water pipe 150 running through the box body 100 is also provided with a flow meter 160 in the channel 140, and water-proof rubber strips 170 are respectively arranged between the two sides of the water-proof curtain 110 and the inner walls of the box body 100. There are two porous plates 180 respectively located on both sides of the water-proof curtain 110. The two porous plates 180 and the inner walls at both ends of the box body 100 respectively form a water inlet chamber 181 and a pumping chamber 182. The water inlet chamber 181 and the water inlet device 300 Connected, the pumping cavity 182 communicates with the pumping device 400, the water inlet device 300 includes a water inlet tank 310, a first flow meter 320 connected to the water inlet tank 310 and the box body 100, and a lifting bracket 330 for lifting the water inlet tank 310; The device 400 includes a water storage tank 410 , a second flow meter 420 and a constant pressure outflow device 430 connected in sequence, and the constant pressure outflow device 430 communicates with the tank body 100 .

The curtain foundation pit pumping system 003 provided in this embodiment supports the curtain foundation pit pumping device 002 through the bracket 440 , and researchers can conveniently move the curtain foundation pit pumping device 002 through the roller 450 provided at the bottom of the bracket 440 . In addition, the box body 100 in this embodiment comprises a bottom plate 101, two side plates 102, two end plates 103 and an openable cover plate 104, wherein one side plate 102 is a plexiglass plate made of a transparent material, and the curtain When the foundation pit pumping system 003 is in use, researchers can check the water pressure penetration in the box body 100 through the side of the box body 100 provided with the plexiglass plate. There is a camera 500, and the water pressure seepage information in the box body 100 is collected through the camera 500, and analyzed on the computer.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. A curtain foundation pit pumping device is characterized in that it comprises a casing and at least one pore water pressure gauge located in the casing, and the two ends of the casing are respectively connected with a water inlet device and a pumping device, The box body is provided with a water-proof curtain that can move along its length direction, and the water-proof curtain divides the box body into a first chamber and a second chamber, and the water-proof curtain and the bottom wall of the box body A channel communicating with the first chamber and the second chamber is provided therebetween, and a first water bag and a second water bag are respectively arranged in the first chamber and the second chamber. 2 . The water pumping device for curtain foundation pit according to claim 1 , wherein the first water bag and the second water bag are respectively communicated with water pipes penetrating out of the box. 3 . 3. The water pumping device for curtain foundation pit according to claim 1, characterized in that, a flow meter is also arranged in the passage. 4. The water pumping device for curtain foundation pit according to claim 1, characterized in that at least one side wall of the box is made of transparent material. 5. The curtain foundation pit pumping device according to claim 1, characterized in that, water-proof rubber strips are respectively arranged between the two sides of the water-proof curtain and the inner walls of the two sides of the box body. 6. curtain foundation pit pumping device according to claim 1, is characterized in that, also is provided with two porous plates respectively positioned at both sides of described water-proof curtain in the described box, two described porous plates and described The inner walls at both ends of the box body respectively form a water inlet chamber and a water pumping chamber, the water inlet chamber communicates with the water inlet device, and the water pumping chamber communicates with the water pumping device. 7 . The curtain foundation pit pumping device according to claim 1 , wherein the water inlet device comprises a water inlet box and a first flow meter connecting the water inlet box and the box body. 8 . 8. The water pumping device for curtain foundation pit according to claim 7, wherein the water inlet device further comprises a lifting bracket for lifting the water inlet box. 9. The pumping device for curtain foundation pit according to claim 1, characterized in that, the pumping device comprises a water storage tank, a second flowmeter and a constant pressure outflow device communicated in sequence, and the constant pressure outflow device is connected with the The box is connected. 10. A curtain foundation pit pumping system, characterized in that it comprises the curtain foundation pit pumping device according to any one of claims 1-9.