A pile foundation mud circulation treatment device and method

Abstract

This invention discloses a pile foundation mud circulation treatment device and method, including an anti-overflow component. The anti-overflow component includes an anti-overflow baffle ring. The bottom plate of the anti-overflow baffle ring has a through hole at its center for installing a steel casing. The anti-overflow baffle ring has an inlet and an outlet on opposite sides, respectively. This pile foundation mud circulation treatment device and method connects the anti-overflow component to the mud tank and installs the anti-overflow component outside the steel casing. During drilling, the mud density is adjusted in real time. When pouring concrete, the overflowing mud is discharged, separating the solid and liquid components of the mud, thus achieving the collection and recycling of the mud. This solves the problem in traditional mud treatment processes where mud tanks are set up by digging pits, and the pile hole and mud tank are connected by open trenches. Mud overflows around the casing and is discharged into the mud tank through the trench. In this mud treatment method, mud overflows from the top of the casing during pile foundation drilling and pouring, causing mud to spill out and creating a muddy site and a poor construction environment.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a pile foundation mud circulation treatment device and method. Background Technology

[0002] A pile foundation is a deep foundation consisting of piles and a pile cap connecting the top of the piles, or a single pile foundation consisting of a column and a pile foundation. If the entire pile body is buried in the soil and the bottom of the pile cap is in contact with the soil, it is called a low pile cap pile foundation. If the upper part of the pile body is exposed above the ground and the bottom of the pile cap is above the ground, it is called a high pile cap pile foundation. Mud will be generated during the construction of the pile foundation, and the mud needs to be treated.

[0003] In traditional mud treatment processes, mud pits are constructed by excavating pits, and the pile holes are connected to the mud pits by open trenches. Mud overflows around the casing and is discharged into the mud pits through the trenches. In this mud treatment method, mud overflows from the top of the casing during pile drilling and grouting, causing the site to become muddy and the construction site environment to be poor. In construction environments with surrounding vegetation, if the overflowing mud is not completely collected, the mud seeps into the ground along the casing and trenches and flows into rivers, causing irreversible damage to the original topography and vegetation along the route, polluting the land and rivers, and seriously harming the environment. Traditional processes also require a large area, restrict the construction work area, and result in a messy site. Summary of the Invention

[0004] The purpose of this invention is to provide a pile foundation mud circulation treatment device and method to solve the problems of traditional mud treatment processes causing muddy sites, polluting land and rivers, harming the environment, occupying large areas, and being limited by site constraints.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pile foundation mud circulation treatment device, including an anti-overflow component, the anti-overflow component including an anti-overflow baffle ring, the bottom plate of the anti-overflow baffle ring having a through hole for installing a steel casing at its center, and the anti-overflow baffle ring having an inlet and an outlet on opposite sides respectively.

[0006] Preferably, the anti-overflow component further includes two trestles, which are fixed to the surface of the anti-overflow baffle bottom plate and symmetrically distributed with the center of the through hole as the center point. The anti-overflow baffle is rectangular, and the two trestles are parallel to the long side of the anti-overflow baffle.

[0007] Preferably, the anti-overflow ring is connected to a mud tank via a hose.

[0008] Preferably, the trestle is made of channel steel welded together, and the trestle is higher than the top of the steel casing.

[0009] A method for treating pile foundation mud circulation, using the aforementioned pile foundation mud circulation treatment device, includes the following steps:

[0010] S1: Install steel casing and install anti-overflow components on the outside of the steel casing;

[0011] S2: Inject the mud from the mud tank into the mud inlet hole and connect it to the anti-overflow component through a hose;

[0012] S3: Drill holes and adjust the mud in real time according to the specific gravity of the mud in the hole, and pump the mud into the borehole;

[0013] S4: Pour concrete and use a hose to drain the overflowing mud from the hole. After completion, remove the remaining mud from the box.

[0014] S5: Pour the mud into the sewage tank and use a mud filter press to separate the solid and liquid parts of the mud.

[0015] Preferably, step S1 specifically includes:

[0016] A vibratory hammer was used to bury the steel casing until it protruded 0.5m above the ground. An opening was made on one side of the exposed part of the casing. The outside of the casing was leveled and compacted using an excavator.

[0017] The anti-overflow component was installed on the outside of the steel casing using a crane, with a slight inclination at the bottom and a 2% slope on one side.

[0018] An impermeable membrane is used to seal the connection between the steel casing and the anti-overflow component, and the top is sealed with loess.

[0019] Preferably, step S2 specifically includes:

[0020] The prepared mud in the mud tank is injected into the hole through the mud pump. When the mud overflows from the hole and enters the anti-overflow component, it will moisten the sealing loess to achieve a tight connection. A retaining ring is used to fix the hose connected to the mud tank on one side of the anti-overflow ring.

[0021] Preferably, step S3 specifically includes:

[0022] Drill holes and adjust the mud density in real time according to the specific gravity of the mud in the hole. Use a wireless remote control device to control the water pump to draw mud into the borehole through a hose to ensure that the specific gravity of the mud in the hole meets the construction requirements.

[0023] Preferably, step S4 specifically includes:

[0024] Concrete is poured in and the overflowing mud in the hole is discharged into the mud tank using the connecting hose. If necessary, a mud pump is added to one side of the anti-overflow component for pumping out. After the pile foundation construction is completed, a vacuum truck is used to remove the remaining mud in the mud tank, and an excavator and a flatbed truck are used to transport the mud tank to the next construction site.

[0025] Preferably, step S5 specifically includes:

[0026] After being transported to the mud treatment center by a vacuum truck, the mud is poured into a sewage tank. The mud is then separated into solid and liquid phases by a mud filter press. The clean water flows into a clean water tank and can be used for watering the sidewalk to reduce dust or for concrete curing. The mud cakes are piled up in a centralized manner. The kitchen waste from the site is processed by a composting machine and mixed with the mud cakes to make arable soil for greening and reclamation under the bridge.

[0027] As can be seen from the above technical solution, the present invention has the following beneficial effects:

[0028] This pile foundation mud circulation treatment device and method connects the anti-overflow component to the mud tank and installs the anti-overflow component outside the steel casing. During drilling, the mud density is adjusted in real time, and overflowing mud is discharged during concrete pouring, separating the solid and liquid components. This achieves the collection and recycling of the mud, solving the problems of traditional mud treatment processes. Traditional mud treatment methods involve excavating pits to create mud pits, connecting the pile hole to the mud pit via open trenches. Mud overflows around the casing and is drained into the mud pit through the trenches. This method causes mud to overflow from the top of the casing during pile drilling and pouring, resulting in a muddy site and poor construction environment. Furthermore, in construction environments with surrounding vegetation, overflowing mud is not completely collected, seeping into the ground along the casing and trenches, flowing into rivers, causing irreversible damage to the original vegetation, polluting the land and rivers, and seriously harming the environment. Traditional processes also require a large area, restricting the construction area and causing a messy site. Attached Figure Description

[0029] Figure 1 This is a top view of the pile foundation mud circulation treatment device of the present invention;

[0030] Figure 2 This is a front view of the pile foundation mud circulation treatment device of the present invention;

[0031] Figure 3 This is a left view of the pile foundation mud circulation treatment device of the present invention;

[0032] Figure 4 This is a flowchart of the pile foundation mud circulation treatment method of the present invention.

[0033] In the diagram: 1. Anti-overflow component; 11. Anti-overflow retaining ring; 12. Through hole; 13. Slurry inlet; 14. Slurry outlet; 15. Stool. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, a pile foundation mud circulation treatment device includes an anti-overflow component 1. The anti-overflow component 1 includes an anti-overflow baffle ring 11, a through hole 12, a slurry inlet 13, a slurry outlet 14, and two supports 15. The through hole 12 is located at the center of the bottom plate of the anti-overflow baffle ring 11 for installing a steel casing. The slurry inlet 13 and the slurry outlet 14 are respectively located on opposite sides of the anti-overflow baffle ring 11. Two supports 15 are fixed to the upper surface of the bottom plate of the anti-overflow baffle ring 11, with the two supports 15 centered on the through hole 12. The center points are symmetrically distributed. The overflow prevention ring 11 is rectangular in shape. Two trestles 15 are parallel to the long side of the overflow prevention ring 11. The overflow prevention ring 11 is connected to the mud tank through a hose. The trestles 15 are welded from channel steel and are slightly higher than the top of the steel casing. The overflow prevention component 1 is a collection device for overflowing mud from the steel casing. This device prevents mud from overflowing and flowing out of the steel casing and seeping into the ground surface, thus reducing pollution to soil, groundwater and rivers during pile foundation construction.

[0036] Specifically, an anti-overflow component 1 is installed on the outside of the bored pile casing. The steel casing is inside the through hole 12, and the connection is sealed with clay and film. The anti-overflow component 1 is a device for collecting mud overflowing from the hole of the steel casing during the pile foundation construction process. The mud pumping and injection control are automated by adding a mud pump and a wireless remote control device. The anti-overflow component 1 is a square closed ring formed by splicing the bottom plate and baffle unit end to end, and the inside is made of steel to form a support.

[0037] In the specific implementation process, taking a friction pile with a diameter of 1.25m as an example, a steel casing with a diameter of 1.45m is used for installation. The top of the steel casing is 0.5m above the ground. The anti-overflow component 1 is made of 14mm thick steel plate welded and assembled, with dimensions of 2.5m x 3.0m and a height of 0.75m. A clamp is set on the top using channel steel, and the vertical ribs are set with 8cm x 5cm square steel at a spacing of 1.0m. A hole with a diameter of 10cm is opened on both sides of the anti-overflow ring 11, and a steel pipe with a length of 10cm is welded out for connecting the drainage hose. The center of the bottom plate of the anti-overflow ring 11 is opened according to the diameter of the steel casing, with the hole diameter slightly larger than the casing diameter by 5cm for easy installation. Four lifting holes are set at the four corners of the top of the anti-overflow ring 11. On the left and right sides of the long side (3.0m) of the bottom plate of the anti-overflow ring 11, there are trestles 15. The trestles 15 are made of channel steel, with a length of 1.5m. The legs of the trestles are made of the same type of channel steel and are fully welded to the bottom of the device. The height is 0.6m, slightly higher than the top of the buried casing, which facilitates the installation of the lifting rods. As for the mud tank, during the construction process, the mud tank is made of steel. A steel mud tank is buried between two piers and connected to the anti-overflow component 1 through a hose to form a circulation system, which achieves the effect of recycling the pile foundation mud. Protective railings are installed at the top of the foundation pit and safety warning signs are set. The size of the mud tank is set according to 1.5 to 2 times the maximum mud volume of a single pile foundation. To facilitate hoisting and relocation, multiple steel boxes can be connected in parallel for use as a whole, which can be used for the construction of 4 to 6 pile foundations. After the construction is completed, the whole box can be hoisted and transported for the construction of other pile foundations. The steel mud box effectively avoids the leakage of traditional mud pits and the environmental pollution caused by subsequent landfill treatment. It can also be recycled, reducing construction costs and greatly improving the civilized image of the site.

[0038] A method for treating pile foundation mud circulation is provided, employing the aforementioned pile foundation mud circulation device. The method includes the following steps:

[0039] Install steel casings and install anti-overflow components on the outside of the steel casings;

[0040] Inject the mud from the mud tank into the inlet hole and connect it to the anti-overflow component via a hose;

[0041] Drill holes and adjust the mud in real time according to the specific gravity of the mud in the hole, and pump the mud into the borehole;

[0042] Pour concrete and use a hose to drain the overflowing mud from the hole. After completion, remove any remaining mud from the box.

[0043] The mud is poured into the sewage tank, and the mud is separated into solid and liquid phases by a mud filter press.

[0044] The specific operation process is as follows: a vibratory hammer is used to bury the steel casing until it protrudes 0.5m above the ground. The exposed part of the casing is open on one side. The outside of the casing is leveled and compacted by an excavator.

[0045] The anti-overflow component was installed on the outside of the steel casing using a crane, with the bottom slightly tilted and a 2% slope on one side.

[0046] The connection between the steel casing and the anti-overflow component is sealed with a waterproof membrane ring, and the top is sealed with loess.

[0047] The prepared mud in the steel mud tank is injected into the hole through the mud pump, and overflows into the anti-overflow component to moisten the sealing loess, so as to achieve a tight connection and ensure that there is no leakage at the bottom of the device.

[0048] A retaining ring is used on one side of the anti-overflow component to fix the hose connected to the steel mud tank, so that the overflow mud can be discharged from the hole and prevent the mud from overflowing out of the top of the device, thus avoiding environmental pollution.

[0049] During the drilling process, the specific gravity of the mud in the hole is adjusted in real time. A wireless remote control device is used to control the water pump to draw mud into the borehole through a hose, ensuring that the specific gravity of the mud in the hole meets the construction requirements, effectively forming mud wall protection, and ensuring hole formation.

[0050] During concrete pouring, the overflowing mud in the hole is discharged into the mud tank using the connecting hose. If necessary, a mud pump is added to one side of the anti-overflow component for pumping out the mud.

[0051] Each mud tank can be used for the construction of 4 to 6 pile foundations. After the pile foundation construction is completed, a vacuum truck is used to remove the remaining mud in the tank, and an excavator and a flatbed truck are used to transport the mud tank to the next construction site.

[0052] Waste slurry from pile foundations is transported to a slurry buffer tank using a vacuum truck. It is then pumped into a mixing tank for chemical dosing and mixing. A dedicated feed pump for the filter press then feeds the material, using the pressure difference across the filter cloth to force most of the water in the material through the cloth and back into the clear water tank via pipes. After chemical adjustment and pH testing to ensure it meets standards, the material is discharged. The material is trapped in the filter chamber, gradually forming a filter cake, thus achieving solid-liquid separation. The clear water flowing into the clear water tank can be used for dust suppression on access roads or for concrete curing. The slurry cake is centrally stored, and on-site kitchen waste is processed by a composting machine. The mud cake is mixed with soil to form topsoil for greening and reclamation under bridges. This process avoids drying the mud, reduces the amount of mud transported out, increases the speed of mud treatment, and saves costs. The clean water treated at the mud treatment center meets the discharge standards and can be used for dust suppression on access roads and maintenance of abutments and piers. The mud cake is used for reclamation and greening under bridges, achieving repeated reuse of the treated materials and maximizing resource utilization. This device and treatment method are easy to transfer to other sites and effectively solve the problem of mud overflow and seepage during pile foundation construction, keeping the site clean, realizing the recycling of mud, and protecting the local ecological environment.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pile foundation mud circulation treatment device, characterized in that, include: An anti-overflow assembly (1) includes an anti-overflow baffle ring (11). The anti-overflow baffle ring (11) has a through hole (12) for installing a steel casing at the center of its base plate. The anti-overflow baffle ring (11) has an inlet (13) and an outlet (14) on opposite sides. The anti-overflow assembly (1) also includes two trestles (15). The two trestles (15) are fixed on the upper surface of the base plate of the anti-overflow baffle ring (11) and are symmetrically distributed with the center of the through hole (12) as the center point. The anti-overflow baffle ring (11) is rectangular, and the two trestles (15) are parallel to the long side of the anti-overflow baffle ring (11). The trestle (15) is made of channel steel and is higher than the top of the steel casing.

2. The pile foundation mud circulation treatment device according to claim 1, characterized in that: The anti-overflow ring (11) is connected to the mud tank via a hose.

3. A method for treating pile foundation mud circulation, characterized in that, The pile foundation mud circulation treatment device according to any one of claims 1-2, the method includes the following steps: S1: Install steel casing and install anti-overflow components on the outside of the steel casing; S2: Inject the mud from the mud tank into the mud inlet hole and connect it to the anti-overflow component through a hose; S3: Drill holes and adjust the mud in real time according to the specific gravity of the mud in the hole, and pump the mud into the borehole; S4: Pour concrete and use a hose to drain the overflowing mud from the hole. After completion, remove the remaining mud from the box. S5: Pour the mud into the sewage tank and use a mud filter press to separate the solid and liquid components of the mud. The specific steps in S1 include: A vibratory hammer was used to bury the steel casing until it protruded 0.5m above the ground. An opening was made on one side of the exposed part of the casing. The outside of the casing was leveled and compacted using an excavator. The anti-overflow component was installed on the outside of the steel casing using a crane, with a slight inclination at the bottom and a 2% slope on one side. An impermeable membrane ring is used to seal the connection between the steel casing and the anti-overflow component, and the top is sealed with loess. The specific steps in S2 include: The prepared mud in the mud tank is injected into the hole through the mud pump. When the mud overflows the hole and enters the anti-overflow component, it will moisten the sealing loess to achieve a tight connection. A retaining ring is used to fix the hose to the mud tank on one side of the anti-overflow ring. The specific steps in S5 include: After being transported to the mud treatment center by a vacuum truck, the mud is poured into a sewage tank. The mud is then separated into solid and liquid phases by a mud filter press. The clean water flows into a clean water tank for dust suppression on the access road or for concrete curing. The mud cakes are piled up in a centralized manner. The kitchen waste from the site is processed by a composting machine and mixed with the mud cakes to make arable soil for greening and reclamation under the bridge.

4. The pile foundation mud circulation treatment method according to claim 3, characterized in that: The specific steps in S3 include: Drill holes and adjust the mud density in real time according to the specific gravity of the mud in the hole. Use a wireless remote control device to control the water pump to draw mud into the borehole through a hose to ensure that the specific gravity of the mud in the hole meets the construction requirements.

5. The pile foundation mud circulation treatment method according to claim 3, characterized in that: The specific steps in S4 include: Concrete is poured in and the overflowing mud in the hole is discharged into the mud tank using the connecting hose. A mud pump is installed on one side of the anti-overflow component for pumping out the mud. After the pile foundation construction is completed, a vacuum truck is used to remove the remaining mud in the mud tank, and an excavator and a flatbed truck are used to transport the mud tank to the next construction site.

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