Method for reinforcing a kiln industry piled foundation

Abstract

The application provides a kind of kiln industry accumulation layer ground reinforcement device and method, belongs to ground reinforcement technical field.The reinforcement device of the application includes suction assembly and jet flow assembly, the reinforcement method of the application includes: setting suction assembly and jet flow assembly on the two sides of masonry wall respectively, using pump suction pipe in suction assembly and jet flow pipe in jet flow assembly to form closed suction passage in kiln industry accumulation layer, after the air in gap is sucked away by suction assembly, liquid soil is injected into kiln industry accumulation layer by using jet flow assembly, liquid soil is filled in the gap inside the ground to be reinforced under the traction of negative pressure, and the kiln industry abandoned land ground reinforced by liquid soil is formed.The kiln industry accumulation layer ground reinforcement device and method of the application can realize directional injection of liquid soil, and will not damage the original state of ground soil, can realize reverse removal under necessary conditions, so that the filled ground structure can be restored to retain historical features, and achieve the purpose of non-destructive reinforcement.

Description

Technical Field

[0001] This invention belongs to the field of foundation reinforcement technology, and specifically relates to a reinforcement device and method for a kiln industry deposit foundation. Background Technology

[0002] The foundation of a kiln site consists of waste materials generated during the ceramic production process, which are then filled underground. These waste materials typically include fragments of pottery, porcelain, bricks, and tiles, with dimensions exceeding 15cm. They are found not only in the foundations of some masonry walls but also in the aforementioned kiln waste soil.

[0003] Due to the inherent defects of kiln waste soil, the foundation soil is characterized by high porosity, large unconformity, strong permeability, and loose, easily compressible texture. Jingdezhen, with its long-standing and well-developed ceramic industry, has its entire core urban area situated on kiln waste strata, with some areas reaching a thickness of 7-8 meters. However, the masonry structures within these foundations, after hundreds of years of use, have exhibited significant uneven settlement and wall tilting, among other harmful phenomena. Given Jingdezhen's application for World Heritage status for its historical masonry buildings in its ceramic industry residential clusters, there is an urgent need to protect and reinforce the foundations beneath these walls. Summary of the Invention

[0004] Conventional grouting reinforcement and the addition of concrete sandwich beams in the foundation will create a permanent rigid structure. The construction process also requires excavation of the foundation, which will damage the original state of the foundation soil. If cultural relics are buried in the foundation soil, they cannot be removed in reverse and will cause irreversible damage to the cultural relics. Therefore, this reinforcement method is not reversible.

[0005] For the kiln deposit foundation, which is part of the historical and cultural heritage, this invention creatively proposes a reversible reinforcement method that can be reversed and removed when necessary, while meeting the requirement of "not changing the original state", which is more in line with the concept of cultural relic protection.

[0006] In order to prevent damage to the original foundation and ensure that the structure can be restored, the present invention provides a reinforcement device and method for the foundation of the kiln deposit layer under the wall.

[0007] The technical solution of the present invention is as follows:

[0008] A reinforcement device for a kiln-industrial deposit foundation includes:

[0009] A suction assembly, at least a portion of which is used for insertion into the foundation on one side of a masonry wall;

[0010] A jetting assembly, at least a portion of which is inserted into the foundation on the other side of the masonry wall, is used to inject liquid soil into the foundation. A closed suction channel is formed between the suction assembly and the jetting assembly. The suction assembly uses the suction assembly to remove air from the voids inside the foundation, creating a negative pressure environment for drawing the liquid soil to flow.

[0011] Furthermore, the suction assembly includes:

[0012] Vacuum pump;

[0013] Several pump suction pipes are set on one side of the masonry wall. The vacuum pump is connected to the pump suction pipes. Several evenly arranged air inlets are opened on the surface of the pump suction pipes along the axial direction to extract air at different depths in the foundation. The air inlets are oriented towards the masonry wall.

[0014] The pump suction pipe is inserted vertically into the foundation on one side of the masonry wall; and / or,

[0015] The jetting assembly includes several jetting pipes disposed on the other side of the masonry wall. The surface of the jetting pipes is provided with several uniformly arranged jetting holes along the axial direction for injecting liquid soil into the foundation at different depths, and the jetting holes face the masonry wall.

[0016] The jet pipe is inserted vertically into the foundation on the other side of the masonry wall.

[0017] Furthermore, the plurality of pump suction pipes and spray pipes are evenly arranged at 2m intervals on both sides of the masonry wall, and the pump suction pipes and spray pipes correspond one to one.

[0018] The present invention also provides a method for reinforcing the foundation of a kiln industry deposit layer, using the above-mentioned reinforcement device for the foundation of a kiln industry deposit layer, comprising the following steps:

[0019] S1. Suction components and jet components are installed on both sides of the masonry wall to form a closed suction channel in the foundation on both sides of the masonry wall.

[0020] S2. The air inside the closed suction channel of the foundation is extracted using the suction component to create a negative pressure environment for pulling the liquid soil to flow.

[0021] S3. Liquid soil is injected into the foundation using a jet assembly. The liquid soil is drawn in by negative pressure and fills the voids inside the foundation to be reinforced.

[0022] Furthermore, in step S3, the injection of liquid soil is stopped when the liquid soil seeps out from the foundation.

[0023] Furthermore, before step S1, step S0 is also included, specifically as follows:

[0024] Temporary supports were provided for the masonry walls, and damaged sections of the masonry walls were temporarily sealed.

[0025] Furthermore, following step S3, step S4 is also included, specifically as follows:

[0026] The reinforced foundation was watered and covered with a membrane for curing, and the contaminated parts of the masonry wall surface were cleaned.

[0027] Furthermore, the reinforcement method does not alter the original state of the foundation during implementation, and the solidified liquid soil can be removed in reverse.

[0028] Furthermore, the raw material components of the liquid soil include clay, water and curing agent, and the mass ratio of each component is clay:water:curing agent = (20-24):(10-12):(2-3).

[0029] Furthermore, the liquid soil has a strength of 0.8MPa-1.5MPa and a flowability of 160-200mm.

[0030] The beneficial effects of this invention are as follows:

[0031] This invention discloses a device and method for reinforcing the foundation of a kiln-grown silt layer. By forming closed extraction channels on both sides of the masonry wall using a suction component and a jetting component, directional injection of liquid soil is achieved. The liquid soil is then used to fill the voids within the foundation, reinforcing the original foundation and improving its density and bearing capacity. Furthermore, the reinforcement process does not require excavation of the foundation, thus preserving its original state. Additionally, the use of liquid soil allows for reverse removal if necessary, enabling the restoration of the foundation structure after filling, preserving its historical appearance, and ultimately achieving non-destructive reinforcement. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a reinforcement device for a kiln-based silo foundation in use according to an embodiment of the present invention;

[0033] Figure 2 This is a top view schematic diagram of the distribution of the pump suction pipe and the jet pipe in an embodiment of the present invention.

[0034] In the diagram: 1. Masonry wall; 2. Vacuum pump; 3. Pump suction pipe; 4. Jet pipe; 5. Excavated soil from the kiln site; 6. Kiln site foundation reinforced with liquid soil. Detailed Implementation

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0036] Example 1:

[0037] refer to Figures 1 to 2 This embodiment provides a reinforcement device for the foundation of a kiln deposit layer, comprising: a suction component and a jetting component.

[0038] At least a portion of the suction assembly is used to insert into the foundation on one side of the masonry wall 1. Preferably, at least the air inlet portion of the suction assembly is located in the foundation on one side of the masonry wall 1.

[0039] At least a portion of the jet assembly is inserted into the foundation on the other side of the masonry wall 1 for injecting liquid soil into the foundation. Preferably, at least one jet orifice of the jet assembly for ejecting liquid soil is located within the foundation on the other side of the masonry wall 1. A closed suction channel is formed between the suction assembly and the jet assembly. The suction assembly uses its suction components to remove air from the voids inside the foundation, creating a negative pressure environment for drawing the liquid soil to flow.

[0040] Existing technologies do not disclose reinforcement methods for kiln industry deposit foundations. Conventional methods such as grouting reinforcement and adding concrete sandwich beams to the foundation will form permanent rigid structures when applied to kiln industry deposit foundations, which cannot achieve reverse removal. In this embodiment, a reinforcement device for kiln industry deposit foundations is creatively proposed, which, combined with liquid soil, can achieve reversible removal.

[0041] Specifically, closed extraction channels are formed on both sides of the masonry wall 1 through the suction and jetting components to achieve directional injection of liquid soil. The liquid soil (also known as fluidized soil) flows from the jetting component to the suction component, filling the voids in the foundation during its flow. By filling these voids, the original foundation is reinforced, improving its density and bearing capacity, effectively supporting the masonry wall 1. Furthermore, the reinforcement process does not require excavation of the foundation and does not damage the original state of the foundation soil. Additionally, taking Jingdezhen as an example, [the text abruptly ends here, likely due to an incomplete sentence or missing information]. The reinforcement of the foundation of the Dezhen kiln industry deposit layer is located in an area designated as a cultural relic protection site. The broken porcelain and pottery fragments within the foundation are part of the cultural relics in terms of their shape and distribution. If the relics are to be displayed or explored in the future, the foundation of the kiln industry deposit layer needs to be restored, that is, the filling material used during the foundation reinforcement needs to be removed in reverse. In this embodiment, liquid soil is used for filling, which can achieve reverse removal when necessary, so that the foundation structure after filling can be restored to preserve the historical appearance and ultimately achieve the purpose of non-destructive reinforcement.

[0042] In a preferred embodiment, the suction assembly includes a vacuum pump 2 and a plurality of pump suction pipes 3.

[0043] Vacuum pump 2 is used to provide suction force to pump suction pipe 3 to remove gas from the gaps in the waste soil 5 of the kiln pile. The pump suction pressure can be 0.5 atmospheres and can be adjusted according to the flow of liquid soil.

[0044] Several pump suction pipes 3 are set on one side of the masonry wall 1. The vacuum pump 2 is connected to the pump suction pipes 3. The pump suction pipes 3 can be connected in parallel and spaced apart. Several evenly arranged air inlets are opened on the surface of the pump suction pipe 3 along the axial direction. A filter structure can be set at the air inlet to prevent impurities and mud from entering the pump suction pipe 3, such as a filter screen, to prevent large particles of stones from entering the pump suction pipe 3 and causing pipe blockage. The air inlets of the pump suction pipe 3 are used to extract air from different depths in the foundation, and the direction of the air inlets is towards the masonry wall 1. The pump suction pipe 3 is preferably inserted vertically into the foundation on one side of the masonry wall 1.

[0045] The jetting assembly includes several jetting pipes 4 disposed on the other side of the masonry wall 1. The jetting pipes 4 can be connected in parallel and spaced apart. The jetting pipes 4 achieve jetting operation through a booster pump. Preferably, 0.6-1 atmospheres are used to make the slurry spray out of the jetting holes at high speed to form a jet, which fills the voids in the kiln accumulation layer. The surface of the jetting pipe 4 has several uniformly arranged jetting holes along the axial direction for injecting liquid soil into the foundation at different depths. The jetting holes face the masonry wall 1. The jetting pipes 4 are vertically inserted into the foundation on the other side of the masonry wall 1. Several pump suction pipes 3 and jetting pipes 4 are uniformly arranged at 2m intervals on both sides of the masonry wall 1, and the pump suction pipes 3 and jetting pipes 4 correspond one-to-one.

[0046] The pump suction pipe 3 and the jet pipe 4 form a closed suction channel within the kiln waste soil layer 5, which can control the injection range of liquid soil and improve the injection effect of liquid soil, thereby forming a kiln waste soil foundation 6 reinforced with liquid soil between the pump suction pipe 3 and the jet pipe 4.

[0047] Example 2:

[0048] refer to Figures 1 to 2 This embodiment provides a method for reinforcing a kiln-grown foundation, using the kiln-grown foundation reinforcement device of Embodiment 1, including the following steps: S1-S3. It may further include step S0 before step S1 and step S4 after step S3.

[0049] S0. Provide temporary support for masonry wall 1 and temporarily seal any missing parts of masonry wall 1 to ensure the stability of the entire wall during the reinforcement process.

[0050] S1. Suction components and jet components are installed on both sides of the masonry wall 1 to form closed suction channels in the foundation on both sides of the masonry wall 1. Specifically, during construction, holes can be drilled in the foundation 6 on both sides of the masonry wall 1, and then a part of the suction component and a part of the jet component can be placed in the holes.

[0051] S2. The air inside the closed suction channel of the foundation is extracted using the suction component to create a negative pressure environment for pulling the liquid soil to flow.

[0052] S3. Use the jet assembly to inject liquid soil into the foundation. The liquid soil is drawn in by negative pressure and fills the voids inside the foundation to be reinforced. Stop injecting liquid soil when the liquid soil seeps out from inside the foundation.

[0053] S4. Water and cover the reinforced foundation for curing, and clean the contaminated parts of the masonry wall 1.

[0054] In a preferred embodiment, the reinforcement method does not alter the original state of the foundation during implementation, and the solidified liquefied soil can be removed in reverse. After construction is completed, the suction and jet components are removed, and the original borehole is filled with foundation soil or liquefied soil, ultimately achieving the purpose of non-destructive reinforcement.

[0055] Using the above method, closed extraction channels are formed on both sides of the masonry wall 1 through the suction and jet components to achieve directional injection of liquid soil. The liquid soil flows from the jet component to the suction component, filling the voids in the foundation during its flow. By filling these voids with liquid soil, the original foundation is reinforced, improving its density and bearing capacity, effectively supporting and bearing the masonry wall 1. Furthermore, the reinforcement work can be carried out without excavating the base layer of the kiln waste soil, thus preserving the original state of the foundation soil. In addition, the use of liquid soil for filling is essentially... Using soil to reinforce the foundation of the kiln industry deposit layer allows for reverse removal when necessary (for example, in the case of reinforcing the foundation of the Jingdezhen kiln industry deposit layer, the area to be reinforced is a protected cultural relic, and the shape and distribution of the broken porcelain and pottery fragments in the foundation are part of the cultural relics. If the cultural relics need to be displayed or explored in the future, the foundation of the kiln industry deposit layer needs to be restored, which is the filling material used when reinforcing the foundation by reverse removal). This allows the foundation structure to be restored after filling, so as to preserve the historical features and ultimately achieve the purpose of non-destructive reinforcement.

[0056] As a preferred implementation, the foundation reinforcement width (the width of the kiln waste land foundation 6 reinforced on one side in the thickness direction of the masonry wall 1) is preferably 0.8-1.2m, and the reinforcement depth is preferably 0.4-0.6m, which can provide good support for the masonry wall 1.

[0057] As a preferred implementation method, to achieve reversible removal, the liquid soil needs to use specific components and proportions. The raw material components of the liquid soil include clay, water, and a curing agent. The clay used is local clay with a color similar to the foundation soil. The curing agent can be one or more of cement-based composite curing agents, CaO, active Al2O3, SiO2, lime, etc., and the preferred mass ratio of each component is clay:water:curing agent = (20-24):(10-12):(2-3), so that the strength of the liquid soil is 0.8MPa-1.5MPa and the flowability is 160-200mm, which is optimal. The selected liquid soil has a 28-day strength of 0.8 MPa-1.0 MPa. In a specific embodiment, the weight of the clay can be 20 kg, 22 kg, or 24 kg, the weight of the water can be 10 kg, 11 kg, or 12 kg, and the weight of the curing agent can be 2 kg, 2.5 kg, or 3 kg. The liquid soil with the above specific mass ratio is essentially a reinforced soil. It can be pried out from the filling gaps by hand or with machinery, and reverse cleaning can be carried out to restore the foundation structure after filling, so as to preserve the historical appearance and achieve the purpose of non-destructive reinforcement. In addition, tests have shown that liquid soil with the specific strength and fluidity mentioned above, especially liquid soil with a 28-day strength of 0.8 MPa-1.0 MPa, can flow smoothly in the kiln industry deposit layer without easily clogging the gaps. It is particularly suitable for filling and reinforcing the foundation of the kiln industry deposit layer, and can also provide effective support for the masonry wall 1. Liquid soil with other components and proportions, even if the strength and fluidity are within the above range, cannot achieve the purpose of reverse cleaning, smooth flow and effective support at the same time.

[0058] In one specific embodiment, the weights of clay, water, and curing agent are 20kg, 10kg, and 2kg, respectively. After testing, the strength of the liquid soil with the above-mentioned ratio is 0.8MPa-1.5MPa, and the fluidity is 180-200mm. The test results show that the liquid soil with the above-mentioned specific strength and fluidity can simultaneously achieve the effects of reverse cleaning, smooth flow, and effective support, and can meet the filling construction conditions with different fluidity requirements.

[0059] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A method for reinforcing a foundation of a kiln-grown sedimentary layer, comprising a reinforcement device for such foundation, characterized in that, The reinforcement device includes: A suction assembly, at least a portion of which is used for insertion into the foundation on one side of the masonry wall (1); A jet assembly, at least a portion of which is used to insert into the foundation on the other side of the masonry wall (1) for injecting liquid soil into the foundation, wherein a closed suction channel is formed between the suction assembly and the jet assembly. The reinforcement method includes the following steps: S1. A suction assembly and a jet assembly are installed on both sides of the masonry wall (1) to form a closed suction channel in the foundation on both sides of the masonry wall (1); S2. The air inside the closed suction channel of the foundation is extracted using the suction component to create a negative pressure environment for pulling the liquid soil to flow. S3. Liquid soil is injected into the foundation using a jet assembly. The liquid soil is drawn in by negative pressure and fills the voids inside the foundation to be reinforced. The reinforcement method does not change the original state of the foundation during implementation, and the liquid soil can be removed in reverse after solidification. The raw material components of the liquid soil include clay, water and curing agent, and the mass ratio of each component is clay:water:curing agent = (20-24):(10-12):(2-3).

2. The method for reinforcing the foundation of a kiln-grown stratum as described in claim 1, characterized in that, The suction assembly includes: Vacuum pump (2); Several pump suction pipes (3) are set on one side of the masonry wall (1). The vacuum pump is connected to the pump suction pipes (3). Several uniformly arranged air inlets are opened on the surface of the pump suction pipes (3) along the axial direction to extract air from different depths in the foundation. The air inlets are oriented towards the masonry wall (1). The pump suction pipe (3) is inserted vertically into the foundation on one side of the masonry wall (1); and / or, The jet assembly includes several jet pipes (4) arranged on the other side of the masonry wall (1). The surface of the jet pipes (4) is provided with several uniformly arranged jet holes along the axial direction for injecting liquid soil into the foundation at different depths, and the jet holes face the masonry wall (1). The jet pipe (4) is inserted vertically into the foundation on the other side of the masonry wall (1).

3. The method for reinforcing the foundation of a kiln-producing layer as described in claim 2, characterized in that, The pump suction pipes (3) and spray pipes (4) are evenly arranged at 2m intervals on both sides of the masonry wall (1), and the pump suction pipes (3) and spray pipes (4) correspond one to one.

4. The method for reinforcing the foundation of a kiln-producing stratum as described in claim 1, characterized in that, In step S3, the injection of liquid soil is stopped when liquid soil seeps out from the foundation.

5. The method for reinforcing the foundation of a kiln-producing stratum as described in claim 1, characterized in that, Before step S1, step S0 is also included, specifically: Temporary supports were provided for the masonry wall (1), and the missing parts of the masonry wall (1) were temporarily sealed.

6. The method for reinforcing the foundation of a kiln-producing stratum as described in claim 1, characterized in that, Following step S3, step S4 is further included, specifically: The reinforced foundation was watered and covered with a membrane for maintenance, and the contaminated parts of the masonry wall (1) were cleaned.

7. The method for reinforcing the foundation of a kiln-producing stratum as described in claim 1, characterized in that, The curing agent is selected from one or more of the following: cement-based composite curing agent, CaO, active Al2O3, SiO2, and lime.

8. The method for reinforcing the foundation of a kiln-producing layer as described in claim 1, characterized in that, The strength of the liquid soil is 0.8MPa-1.5MPa, and the fluidity is 160-200mm.

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