A system and method for treating slurry in caisson

Abstract

The present invention relates to a caisson sinking mud treatment system and method, the caisson sinking mud treatment system comprises a transfer diversion tank, a mud treatment device, a sedimentation tank and a clear water tank. The transfer diversion tank is connected to the caisson, and is used to transfer and divert the mud generated during the caisson sinking construction. The mud treatment device is connected to the transfer diversion tank, and is used to perform concentrated filtration and pressure treatment on the diverted mud. The sedimentation tank is connected to the transfer diversion tank, and is used to perform graded sedimentation treatment on the diverted mud. The clear water tank is respectively connected to the mud treatment device and the sedimentation tank, and is used to store the clear water generated by the mud treatment device and the mud water generated by the sedimentation tank and to perform sedimentation treatment on the mud water for caisson water replenishment and high-pressure water injection. The caisson sinking mud treatment system is configured as a mud treatment method with the mud treatment device as the main part and the sedimentation tank as the auxiliary part, so as to save site and investment costs and improve the continuous mud treatment capacity.

Description

Technical Field

[0001] The invention relates to the technical field of caisson construction, and in particular to a caisson sinking mud processing system and method. Background Art

[0002] The process of sinking the caisson will generate a lot of mud, which needs to be processed in a short time and the water in the mud needs to be separated and recycled. Conventional methods generally use sedimentation tanks to fully settle the mud and then obtain the upper clean water for recycling, or use mud treatment equipment to separate the water and soil in the mud.

[0003] However, during the sinking of the caisson, a huge amount of mud will be processed in a short period of time. The use of a sedimentation tank requires a large site area, which will lead to site limitations. The mud discharge pressure is unstable during the sinking of the caisson, and it is not suitable to use equipment for direct treatment. At the same time, the mud displacement per unit time during the sinking of the caisson varies greatly, and the rated treatment efficiency of the mud treatment equipment is limited. If the equipment is invested according to the maximum mud displacement, it will lead to a large number of equipment, high investment costs and equipment idle rate. In addition, there is a certain failure rate when using equipment for treatment, which is easy to affect the normal sinking of the caisson. Summary of the invention

[0004] The purpose of the present invention is to provide a caisson sinking mud treatment system and method, which can save space, solve the problem of limited space, and improve the continuous mud treatment capacity, ensure that the mud can be treated in time when the mud treatment equipment fails, and ensure that the caisson soil can be continuously constructed. At the same time, it can also cut the mud peak according to the large difference in mud discharge per unit time during the sinking of the caisson, match the caisson mud absorption characteristics, thereby reducing the configuration of the mud treatment equipment to save investment costs and reduce the equipment idle rate. In addition, it can avoid the problem that the mud treatment equipment cannot directly and effectively treat the mud due to unstable mud discharge pressure.

[0005] To achieve the above object, according to a first aspect of the present invention, a caisson sinking mud treatment system is provided, comprising:

[0006] The transfer and diversion pool is connected to the caisson and is used to transfer and divert the mud generated during the caisson sinking construction;

[0007] Mud processing equipment, connected to the transfer and diversion tank, for concentrating and filtering the diverted mud;

[0008] A sedimentation tank connected to the transfer and diversion tank, used for performing graded sedimentation treatment on the diverted mud;

[0009] A clean water tank, connected to the mud treatment equipment and the sedimentation tank, respectively, for storing clean water produced by the mud treatment equipment and muddy water produced by the sedimentation tank and performing sedimentation treatment on the muddy water for use in caisson water replenishment and high-pressure water jetting;

[0010] The caisson sinking mud treatment system is configured as a mud treatment method with the mud treatment equipment as the main component and the sedimentation tank as the auxiliary component, so as to save site and investment costs and improve the continuous mud treatment capacity.

[0011] Optionally, the mud processing equipment comprises:

[0012] A concentration tank connected to the transfer and diversion tank and the clean water tank, used to add flocculants into the mud to concentrate and flocculate the mud so as to separate the mud and water in the mud;

[0013] A filter press connected to the concentration tank and the clean water tank, used for performing filter press treatment on the slurry after the concentration and flocculation is completed;

[0014] The clean water produced by the concentration tank and the filter press flows back to the clean water tank.

[0015] Optionally, the sedimentation tank is divided into a plurality of sedimentation areas, and the plurality of sedimentation areas cooperate to perform graded sedimentation treatment on the diverted sludge, and a drainage trough is provided at the outlet of the sedimentation tank.

[0016] Optionally, the sedimentation tank is configured such that after the mud is precipitated in the sedimentation tank, an excavator is used to perform sediment salvage operations, and at the same time, the muddy water flows by itself through the drainage trough to the clean water tank.

[0017] Optionally, the caisson sinking mud processing system further includes:

[0018] The soil storage yard is used to temporarily store the sediment salvaged from the sedimentation tank so that the sediment can be transported to the soil disposal yard after being dried.

[0019] Optionally, a plurality of clean water tanks are provided, and the plurality of clean water tanks cooperate to perform graded sedimentation treatment on the muddy water produced by the sedimentation tank for use in replenishing water in the caisson.

[0020] According to a second aspect of the present invention, a method for treating a caisson sinking mud treatment system is provided, comprising the following steps:

[0021] The mud generated during the sinking construction of the caisson is transferred and diverted through the transfer and diversion pool;

[0022] The diverted mud is processed respectively by the cooperation of the mud processing equipment and the sedimentation tank;

[0023] The clean water produced by the mud treatment equipment and the muddy water produced by the sedimentation tank are stored in the clean water tank and the muddy water is precipitated so as to be used for caisson water replenishment and high-pressure water injection.

[0024] Optionally, the processing of the diverted mud by the cooperation of the mud processing equipment and the sedimentation tank comprises the following steps:

[0025] The diverted mud is concentrated and filtered by the mud processing equipment;

[0026] The diverted sludge is subjected to graded sedimentation treatment through the cooperation of several sedimentation areas of the sedimentation tank.

[0027] Optionally, the diverted mud is concentrated and filtered by the mud processing equipment, comprising the following steps:

[0028] Adding flocculant to the mud through the concentrating tank of the mud processing equipment to concentrate and flocculate the mud so as to separate the mud and water in the mud;

[0029] The mud after the concentrated flocculation is subjected to filter press treatment by the filter press of the mud treatment equipment;

[0030] The dry residue produced by the filter press treatment is transported to the waste soil site.

[0031] Optionally, the step of performing graded sedimentation treatment on the diverted slurry by cooperating with a plurality of sedimentation areas of the sedimentation tank further includes the following steps:

[0032] An excavator is used to salvage the sediment produced after the mud has settled, and the sediment is transported to a soil storage site for drying. After the sediment is dried, it is transported to a waste dump.

[0033] The beneficial effects of the present invention are as follows: mud treatment is mainly carried out with mud treatment equipment and supplemented by sedimentation tanks. Mud is treated by matching mud treatment equipment with sedimentation tanks of appropriate size. This can not only save space and solve the problem of limited space, but also improve the continuous mud treatment capacity, ensure that the mud can be treated in time when the mud treatment equipment fails, and ensure that the caisson can be continuously constructed. At the same time, the mud peak can be cut according to the large difference in mud discharge per unit time during the sinking of the caisson, and the mud suction characteristics of the caisson can be matched, thereby reducing the configuration of the mud treatment equipment to save investment costs and reduce the equipment idle rate. In addition, the use of a transfer and diversion tank to transfer and divert the mud generated by the caisson sinking construction can, on the one hand, avoid the problem that the mud treatment equipment cannot directly and effectively treat the mud due to unstable mud discharge pressure, and on the other hand, it can coordinate the mud treatment equipment and the sedimentation tank for joint operations.

[0034] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic structural diagram of a caisson sinking mud treatment system shown in one embodiment of the present invention;

[0036] Figure 2 A schematic flow chart of a treatment method of a caisson sinking mud treatment system shown in one embodiment of the present invention;

[0037] Figure 3 for Figure 2 Schematic flow chart of step S20;

[0038] Figure 4 for Figure 2 Schematic flow chart of step S201;

[0039] In the figure: 1. Transfer and diversion tank; 2. Mud treatment equipment; 21. Concentration tank; 22. Filter press; 3. Sedimentation tank; 4. Clear water tank; 5. Soil storage yard. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work belong to the scope of protection of the present invention. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0041] See also Figure 1 A caisson sinking mud treatment system shown in a preferred embodiment of the present application includes a transfer diversion tank 1, a mud treatment device 2, a sedimentation tank 3 and a clear water tank 4. The transfer diversion tank 1 is connected to the caisson, and is used to transfer and divert the mud generated during the caisson sinking construction. The mud treatment device 2 is connected to the transfer diversion tank 1, and is used to concentrate and filter the diverted mud. The sedimentation tank 3 is connected to the transfer diversion tank 1, and is used to grade and sediment the diverted mud. The clear water tank 4 is connected to the mud treatment device 2 and the sedimentation tank 3, respectively, and is used to store the clear water generated by the mud treatment device 2 and the muddy water generated by the sedimentation tank 3, and to perform sedimentation treatment on the muddy water for caisson water replenishment and high-pressure water injection. The caisson sinking mud treatment system is configured as a mud treatment method with the mud treatment device 2 as the main part and the sedimentation tank 3 as the auxiliary part to save site and investment costs and improve the continuous mud treatment capacity.

[0042] According to the scheme of the embodiment of the present invention, the mud treatment is mainly carried out with the mud treatment equipment 2 and the sedimentation tank 3 as an auxiliary. The sedimentation tank 3 of appropriate size is matched with the mud treatment equipment 2 to jointly treat the mud, which can not only save the site and investment cost, solve the problem of limited site, but also improve the continuous mud treatment capacity, ensure that the mud can be treated in time when the mud treatment equipment 2 fails, ensure that the caisson soil can be continuously constructed, and at the same time, the mud peak can be cut for the large difference in mud discharge per unit time during the sinking of the caisson, and the mud suction characteristics of the caisson can be matched, thereby reducing the configuration of the mud treatment equipment 2 to save investment costs and reduce the equipment idle rate. At the same time, the transfer and diversion pool 1 is used to transfer and divert the mud generated by the caisson sinking construction. On the one hand, it can avoid the problem that the mud treatment equipment 2 cannot directly and effectively treat it due to the unstable mud discharge pressure, and on the other hand, it can coordinate the mud treatment equipment 2 and the sedimentation tank 3 to perform joint operations.

[0043] The following is a detailed description with specific embodiments:

[0044] See also Figure 1 The mud treatment equipment 2 includes a concentration tank 21 and a filter press 22. The concentration tank 21 is connected to the transfer and diversion tank 1 and the clear water tank 4, and is used to add flocculants to the mud to concentrate and flocculate the mud so as to separate the mud and water in the mud. The filter press 22 is connected to the concentration tank 21 and the clear water tank 4, and is used to perform filter press treatment on the mud after the concentration and flocculation. The clean water produced by the concentration tank 21 and the filter press 22 is returned to the clear water tank 4. Specifically, the transfer and diversion tank 1 uses a sand pump to pump the mud to the concentration tank 21, and the concentration tank 21 to the filter press 22 uses a slurry pump. Add an appropriate amount of flocculants to the concentration tank 21 and perform gel breaking and flocculation through a pipeline mixer, so that the mud and water in the mud are separated, the mud sinks and the clean water rises, and the clean water is discharged to the clear water tank 4 through a pipeline. The flocculated mud in the concentration tank 21 is pumped into the filter chamber of the filter press 22, and the excess water is discharged from the outlet pipe of the filter chamber through the pressure of the pump and discharged into the clean water tank 4 through the pipeline. The moisture content of the solidified soil (i.e. dry soil residue) in the filter chamber reaches about 20-30%, which can be directly stacked, transported and landfilled to ensure zero discharge of ground mud.

[0045] The sedimentation tank 3 is divided into several sedimentation areas, and the several sedimentation areas cooperate to perform graded sedimentation treatment on the diverted mud. A drainage trough is provided at the outlet of the sedimentation tank 3. A gravel pump is used to pump the mud from the diversion tank to the sedimentation tank 3. After the mud is settled in the sedimentation tank 3, an excavator is used to salvage the sediment. At the same time, the mud and water flow to the clean water tank 4 through the drainage trough.

[0046] The caisson sinking mud treatment system also includes a soil storage field 5, which is used to temporarily store the sediment salvaged from the sedimentation tank 3 so that the sediment can be transported to the soil disposal field after being dried.

[0047] The clean water tanks 4 are provided in a plurality, and the clean water tanks 4 cooperate to perform graded sedimentation treatment on the muddy water produced in the sedimentation tank 3 and then pump the muddy water into the caisson for replenishing the caisson.

[0048] See also Figure 2 The embodiment of the present invention also provides a method for treating a caisson sinking mud treatment system, comprising the following steps:

[0049] Step S10: transferring and diverting the mud generated by the caisson sinking construction through the transfer and diversion pool 1;

[0050] Step S20: The mud treatment equipment 2 and the sedimentation tank 3 are used to treat the separated mud respectively;

[0051] Step S30: The clean water produced by the mud treatment equipment 2 and the muddy water produced by the sedimentation tank 3 are stored in the clean water tank 4 and the muddy water is precipitated for use in caisson water replenishment and high-pressure water injection.

[0052] In step S10, during the sinking construction of the caisson, several air suction machines are activated to extract mud, and the mud is transported to the transfer diversion pool 1, and then divided into two paths through the transfer diversion pool 1 and pumped into the mud processing equipment 2 and the sedimentation tank 3 respectively.

[0053] See also Figure 3 , the step S20 comprises the following steps:

[0054] Step S201: performing concentrated filtration and pressure treatment on the diverted mud by the mud treatment equipment 2;

[0055] Step S202: The diverted sludge is subjected to graded sedimentation treatment by cooperating in a plurality of sedimentation areas of the sedimentation tank 3 .

[0056] See also Figure 4 , the step S201 comprises the following steps:

[0057] Step S2011: adding a flocculant to the mud through the concentration tank 21 of the mud processing equipment 2 to concentrate and flocculate the mud so as to separate the mud and water in the mud;

[0058] Step S2012: performing filter press treatment on the concentrated and flocculated mud by the filter press 22 of the mud treatment equipment 2;

[0059] Step S2013: transporting the dry slag produced by the filter pressing treatment to a waste dump.

[0060] The step S202 also includes the following steps:

[0061] The sediment produced after the mud is precipitated is salvaged by an excavator, and the sediment is transported to the soil storage yard 5 for drying. After the sediment is dried, it is transported to the waste soil yard.

[0062] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A caisson sinking mud treatment system, It is characterized in that include: The transfer and diversion pool is connected to the caisson and is used to transfer and divert the mud generated during the caisson sinking construction; Mud processing equipment, connected to the transfer and diversion tank, for concentrating and filtering the diverted mud; A sedimentation tank connected to the transfer and diversion tank, used for performing graded sedimentation treatment on the diverted mud; A clean water tank, connected to the mud treatment equipment and the sedimentation tank, respectively, for storing clean water produced by the mud treatment equipment and muddy water produced by the sedimentation tank and performing sedimentation treatment on the muddy water for use in caisson water replenishment and high-pressure water jetting; The caisson sinking mud treatment system is configured as a mud treatment method with the mud treatment equipment as the main component and the sedimentation tank as the auxiliary component, so as to save site and investment costs and improve the continuous mud treatment capacity.

2. The caisson sinking mud treatment system according to claim 1, It is characterized in that The mud processing equipment comprises: A concentration tank connected to the transfer and diversion tank and the clean water tank, used to add flocculants into the mud to concentrate and flocculate the mud so as to separate the mud and water in the mud; A filter press connected to the concentration tank and the clean water tank, used for performing filter press treatment on the slurry after the concentration and flocculation is completed; The clean water produced by the concentration tank and the filter press flows back to the clean water tank.

3. The caisson sinking mud treatment system according to claim 1, It is characterized in that The sedimentation tank is divided into a plurality of sedimentation areas, and the plurality of sedimentation areas cooperate to perform graded sedimentation treatment on the diverted mud. A drainage trough is provided at the outlet of the sedimentation tank.

4. The caisson sinking mud treatment system according to claim 3, It is characterized in that The sedimentation tank is configured such that after the mud is precipitated in the sedimentation tank, an excavator is used to carry out sediment salvage operations, and at the same time, the muddy water flows by itself to the clean water tank through the drainage trough.

5. The caisson sinking mud treatment system according to claim 1, It is characterized in that Also includes: The soil storage yard is used to temporarily store the sediment salvaged from the sedimentation tank so that the sediment can be transported to the soil disposal yard after being dried.

6. The caisson sinking mud treatment system according to claim 1, It is characterized in that There are several clean water tanks, and the several clean water tanks cooperate to perform graded sedimentation treatment on the muddy water produced by the sedimentation tank for use in caisson water replenishment.

7. A method for treating the caisson sinking mud treatment system according to any one of claims 1 to 6, It is characterized in that The steps include: The mud generated during the sinking construction of the caisson is transferred and diverted through the transfer and diversion pool; The diverted mud is processed respectively by the cooperation of the mud processing equipment and the sedimentation tank; The clean water produced by the mud treatment equipment and the muddy water produced by the sedimentation tank are stored in the clean water tank and the muddy water is precipitated so as to be used for caisson water replenishment and high-pressure water injection.

8. The method for treating the caisson sinking mud treatment system according to claim 7, It is characterized in that The mud treatment equipment and the sedimentation tank are used to respectively treat the divided mud, including the following steps: The diverted mud is concentrated and filtered by the mud processing equipment; The diverted sludge is subjected to graded sedimentation treatment through the cooperation of several sedimentation areas of the sedimentation tank.

9. The method for treating the caisson sinking mud treatment system according to claim 8, It is characterized in that The mud treatment equipment is used to concentrate and filter the diverted mud, including the following steps: Adding flocculant to the mud through the concentrating tank of the mud processing equipment to concentrate and flocculate the mud so as to separate the mud and water in the mud; The mud after the concentrated flocculation is subjected to filter press treatment by the filter press of the mud treatment equipment; The dry residue produced by the filter press treatment is transported to the waste soil site.

10. The method for treating the caisson sinking mud treatment system according to claim 8, It is characterized in that The process of performing graded sedimentation treatment on the diverted slurry by cooperating with a plurality of sedimentation areas in the sedimentation tank also includes the following steps: An excavator is used to salvage the sediment produced after the mud has settled, and the sediment is transported to a soil storage site for drying. After the sediment is dried, it is transported to a waste dump.

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