A sink partitioned sludge discharge jet device and application thereof

Abstract

A caisson partitioned sludge discharge jet device and application thereof, comprising a plurality of jet lifting units, the jet lifting unit comprising a lifting water inlet pipe, a mortar discharge pipe, a jet water supply pipe and a jet nozzle mounting pipe, the bottom end of the mortar discharge pipe is connected with a mortar inlet pipe, a plurality of mortar inlets are uniformly distributed on the wall of the mortar inlet pipe, the bottom end of the lifting water inlet pipe is communicated with the bottom end of the mortar inlet pipe through a U-shaped pipe, the inner side of the mortar discharge pipe is provided with the jet water supply pipe, the bottom end of the jet water supply pipe is connected with the jet nozzle mounting pipe, the jet nozzle mounting pipe is connected with a nozzle, the method of the present application corresponds to one jet lifting unit for each soil taking space, simultaneously completing the jet impact and mud lifting processes at the bottom of the caisson, without the need to discharge a large amount of stored soil inside the caisson during the sinking process of the caisson, thereby reducing the engineering quantity and saving a large amount of power consumption, having a good energy-saving effect, the method can operate all soil taking spaces or multiple soil taking spaces simultaneously, thereby accelerating the engineering progress.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of open caisson construction, and in particular to an open caisson partitioned sludge discharge jet device and application thereof. BACKGROUND

[0002] The open caisson can be used as a bridge pier, an anchor, a mine vertical shaft, an underground pump house, a pool, an oil depot, an underground equipment foundation, a shield tunnel, a working well and a receiving well of a pipe jacking, and has a wide application in infrastructure projects. A general open caisson is manufactured in situ and then sunk. Such an open caisson is manufactured at a position of a foundation design, and then sunk by self weight after soil is excavated. If the position of the foundation is in water, an island is built in the water first, and then the open caisson is built and sunk on the island. The soil in the open caisson is manually excavated. For a foundation of sand or clay, water jet can be used as a method of soil excavation when the sand or clay is easily fluidized under the impact of the jet. In order to reduce the resistance during sinking of the open caisson, an auxiliary sinking measure can be taken, and compressed air is used to assist sinking. A compressed air pipeline is laid on the outer wall of the open caisson in advance, and compressed air is supplied between the foundation and the wall of the open caisson during sinking of the open caisson, so that an air curtain is formed between the wall of the open caisson and the foundation, thereby reducing the friction coefficient between the sinking and the foundation and reducing the sinking resistance of the open caisson. Mud lubrication sinking is also a method of auxiliary sinking. Mud is injected between the wall of the open caisson and the foundation during sinking of the open caisson, so that a mud isolation layer is formed between the wall of the open caisson and the foundation, thereby reducing the sinking resistance of the open caisson. However, these different open caisson construction methods have a common requirement, that is, the soil in the interior of the open caisson must be discharged during the construction process of sinking of the open caisson, so as to leave a space for operation of machines and personnel. However, the size of the open caisson is generally large, and the removal of the stored soil in the interior space is a time-consuming, labor-intensive and high-cost work. If the sinking operation of the open caisson can be completed without removing the stored soil in the interior of the open caisson, the operation cost and the construction period can be greatly reduced. SUMMARY

[0003] In order to achieve the above-mentioned purpose, the present application provides an open caisson partitioned sludge discharge jet device used for sinking operation of an open caisson without removing stored soil in the interior of the open caisson.

[0004] The technical scheme adopted by the present application is as follows:

[0005] The utility model provides a kind of caisson partitioned sludge discharge jet device, including several jet units, jet unit includes lifting water inlet pipe, mortar discharge pipe, jet water supply pipe and jet nozzle mounting pipe, the bottom end of mortar discharge pipe is connected with mortar inlet pipe, and the wall of mortar inlet pipe is evenly distributed with several mortar inlets, the bottom end of lifting water inlet pipe is communicated with the bottom end of mortar inlet pipe by U-shaped pipe, the inside of mortar discharge pipe is provided with jet water supply pipe, the bottom end of jet water supply pipe is connected with jet nozzle mounting pipe, jet nozzle mounting pipe has three branch pipes, one of which is the vertical branch pipe of nozzle downward direction, and the other two are the horizontal branch pipe of nozzle to both sides direction, and the end of three branch pipes is connected with nozzle.

[0006] The end of two horizontal branch pipes is curved to one side.

[0007] The bending angle of the end of horizontal branch pipe is less than °.

[0008] The bottom end of vertical branch pipe extends to the position corresponding to mortar inlet pipe.

[0009] The lifting water inlet pipe and jet water supply pipe are connected with booster pump device.

[0010] A caisson sinking method uses caisson partitioned sludge discharge jet device to evenly distribute jet units on the annular one circle near the lower end of well wall inside caisson, and the mortar discharge pipe on jet unit is closer to caisson well wall than jet water supply pipe, and the influence area of each jet unit is a soil taking space, and all soil taking spaces are operated simultaneously, and all soil taking spaces are combined to form total soil taking area of caisson sinking.

[0011] The method of the utility model can operate all soil taking spaces or multiple soil taking spaces simultaneously to speed up engineering progress, greatly reduce construction time, and save a large amount of power consumption after completion of the project, so that the method has good energy-saving effect. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structural schematic diagram of the utility model.

[0013] Figure 2 It is the application schematic diagram of the utility model.

[0014] Figure 3 It is the application schematic diagram of single jet unit of the utility model.

[0015] Figure 4The figure is a schematic diagram of the soil taking space distribution of the present application.

[0016] Wherein: 1-lifting unit; 11-lifting water inlet pipe; 12-mortar outlet pipe; 13-jet water supply pipe; 14-jet nozzle installation pipe; 141-horizontal branch pipe; 142-vertical branch pipe; 15-mortar inlet pipe; 16-U-shaped pipe; 17-nozzle; 2-caisson; 3-soil taking space. DETAILED DESCRIPTION

[0017] The caisson partitioned sludge discharge jet device comprises a plurality of lifting units 1, each lifting unit 1 comprising a lifting water inlet pipe 11, a mortar outlet pipe 12, a jet water supply pipe 13 and a jet nozzle installation pipe 14, the bottom end of the mortar outlet pipe 12 being connected with a mortar inlet pipe 15, the mortar inlet pipe 15 being uniformly provided with a plurality of mortar inlets on the pipe wall, the bottom end of the lifting water inlet pipe 11 being in communication with the bottom end of the mortar inlet pipe 15 through a U-shaped pipe 16, the inner side of the mortar outlet pipe 12 being provided with the jet water supply pipe 13, the bottom end of the jet water supply pipe 13 being connected with the jet nozzle installation pipe 14, the jet nozzle installation pipe 14 having three branch pipes, one of which is a vertical branch pipe 142 in the downward direction of the nozzle, and the other two are horizontal branch pipes 141 in the two lateral directions of the nozzle, and the end of each of the three branch pipes is connected with a nozzle 17.

[0018] The end of each of the two horizontal branch pipes 141 is bent to one side. The bending angle of the end of the horizontal branch pipe 141 is less than 90°. In this way, the horizontal jet flow is directed towards the inner wall of the caisson 2, and cooperates with the vertical jet flow to remove the soil under the wall of the caisson 2 as much as possible, thereby ensuring the sinking of the caisson 2.

[0019] The bottom end of the vertical branch pipe 142 extends to the position corresponding to the mortar inlet pipe 15, so that the vertical nozzle 17 is located at the lowermost position of the lifting unit 1. During the sinking of the caisson 2, the vertical nozzle 17 first forms a downward channel and a mortar gathering space in the downward direction of the lifting unit 1.

[0020] A booster pump device is connected to each of the lifting water inlet pipe 11 and the jet water supply pipe 13, facilitating the discharge of mortar and the jet flow of the nozzle 17.

[0021] A caisson sinking method utilizes the caisson partitioned sludge discharge jet device to uniformly distribute the lifting units 1 on the annular one circle near the lower end of the well wall on the inner side of the caisson 2, the mortar outlet pipe 12 of each lifting unit 1 being closer to the well wall of the caisson 2 than the jet water supply pipe 13, the influence area of each lifting unit 1 being a soil taking space 3, all soil taking spaces 3 or a plurality of soil taking spaces 3 being operated simultaneously, and all soil taking spaces 3 combining to form the total soil taking area of the sinking of the caisson 2.

[0022] Example 1

[0023] Taking the sinking well 2 with a diameter of 30 m as an example, the circumference of the sinking well 2 is 91.2 m, and the area is 706 m 2 The influence range of each jet unit 1 for taking soil is 2 m, that is, the diameter of the soil taking space 3 is 2 m, and at least 45 soil taking spaces 3 are required, and the area of each soil taking space 3 is 3.14 m 2 Therefore, the total area of all soil taking spaces is 141 m 2 The soil taking value of the process of the present application is only 141 / 706 = 20% of the soil taking value of the conventional process.

[0024] In use, the jet unit 1 is installed in the annular one around the inside of the sinking well 2 close to the lower end of the well wall, and the installation position is as shown in Figure 3 The influence range of each jet unit 1 for taking soil is 2 m, that is, the diameter of the soil taking space 3 is 2 m, and at least 45 soil taking spaces 3 are required, and the area of each soil taking space 3 is 3.14 m Figure 4 Since the vertical nozzle 17 is located at the lowermost part of the jet unit 1, in the process of sinking the sinking well 2, the vertical nozzle 17 first forms a downward channel and a space for collecting mortar in the downward direction of the jet unit 1, the horizontal nozzle 17 located above the vertical nozzle 17 peels off the soil below the sinking well 2, the formed mortar is collected in the space generated by the vertical jet, and the mortar enters the mixing chamber of the hydraulic lifter through the mortar discharge pipe 12 and is lifted to the outside space. As the soil below the sinking well 2 is peeled off, the sinking well 2 will slowly sink, and the jet unit 1 will continuously peel off the soil and lift the mortar to ensure the sinking of the sinking well.

[0025] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0026] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0027] In this application, unless otherwise clearly indicated and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection or communication with each other; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] The above describes the embodiments of the present application in detail, but the above description is only the preferred embodiments of the present application, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made within the scope of the present application should still belong to the patent scope of the present application.

Claims

1. A caisson partitioned sludge discharge jet device, characterized by, The jet unit (1) comprises a lifting water inlet pipe (11), a mortar outlet pipe (12), a jet water supply pipe (13) and a jet nozzle mounting pipe (14), the bottom end of the mortar outlet pipe (12) is connected with a mortar inlet pipe (15), the mortar inlet pipe (15) is uniformly distributed with a plurality of mortar inlets on the pipe wall, the bottom end of the lifting water inlet pipe (11) is communicated with the bottom end of the mortar inlet pipe (15) through a U-shaped pipe (16), the jet water supply pipe (13) is arranged on the inner side of the mortar outlet pipe (12), the bottom end of the jet water supply pipe (13) is connected with the jet nozzle mounting pipe (14), the jet nozzle mounting pipe (14) has three branch pipes, one of which is a vertical branch pipe (142) in the downward direction of the nozzle, and the other two are horizontal branch pipes (141) in the two side directions of the nozzle, and the end of the three branch pipes is connected with a nozzle (17).

2. The caisson zoned sludge discharge jet device according to claim 1, characterized in that, The end of the two horizontal branch pipes (141) is curved to one side.

3. The caisson zoned sludge discharge jet device according to claim 2, characterized in that, The end of the horizontal branch pipe (141) is curved at an angle less than 90°.

4. The caisson zoned sludge discharge jet device according to claim 3, characterized in that, The bottom end of the vertical branch pipe (142) extends to the position corresponding to the mortar inlet pipe (15).

5. The caisson zoned sludge discharge jet device according to claim 4, characterized in that, The lifting water inlet pipe (11) and the jet water supply pipe (13) are connected with a booster pump device.

6. A method of sinking a caisson, characterised in that, The caisson partitioned mud discharge jet device is used for uniformly distributing the jet unit (1) on the annular one circle of the inner side of the caisson (2) close to the lower end of the well wall, the mortar outlet pipe (12) of the jet unit (1) is closer to the well wall of the caisson (2) than the jet water supply pipe (13), the influence area of each jet unit (1) is a soil taking space (3), a plurality of soil taking spaces (3) are operated at the same time, and the plurality of soil taking spaces (3) are combined to form a total soil taking volume of the caisson (2).

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