Pull-type continuous core membrane water stop system and construction method
By implanting and unfolding the prefabricated core film in the original soil of the foundation pit or slope to form a flexible water stop structure, the problems of poor integrity and low construction efficiency of the existing water stop system are solved, and efficient and low-cost water stop effect is achieved, which is suitable for a variety of formations and deformation environments.
Patent Information
- Application Number
- CN202510717867.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2025-04-03
- Filing Date
- 2025-05-30
- Publication Date
- 2025-07-29
AI Technical Summary
The existing water stop system has poor integrity, unit implementation, low construction efficiency, high cost, and poor water stop effect, especially when the foundation pit or slope deforms.
The traction continuous core film water stop system is adopted, and the prefabricated water-impermeable core film is implanted in the original soil stirring body, and the traction device is used to expand it in the soil to form a closed or long-term continuous flexible water stop structure, thereby avoiding the dependence of cement incorporation and rigid structure.
It achieves an efficient and reliable overall water stop effect, is easy to construct and low cost, is suitable for a variety of formations, and can still maintain effective water stop when the foundation pit or slope is deformed.
Smart Images
Figure CN120384538A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of water stop in foundation pits, slopes, river courses, dams, mines, docks, shorelines, etc., and is particularly applicable to foundation pit support and slope engineering. Background Art
[0002] At present, in the world's water stop curtain projects for foundation pits or slopes, the vast majority adopt rigid water stop systems such as mixing piles, jet grouting piles, secant piles, and diaphragm walls. The core is to form a rigid water stop structure by using the cementing effect of cement soil and concrete.
[0003] The characteristics of the above water stop systems are as follows:
[0004] 1. A large amount of cement needs to be added to mix with the soil to form a cement soil structure or directly replace the original soil with concrete, which is costly and has low construction efficiency;
[0005] 2. The water stop structure is implemented in sections or units. The connection effect between each water stop unit is restricted by verticality, setting-out accuracy, cement content, and the construction level of the construction unit. The connection part of each water stop unit is a weak link, and the overall water stop effect is poor;
[0006] 3. The water stop effect within a single unit is also restricted by cement content, formation properties, and groundwater conditions;
[0007] 4. The formed water stop structure is a rigid structure. When the foundation pit or slope undergoes large deformations, the water stop system will deform and crack, losing its water stop effect.
[0008] Therefore, the conventional water stop systems have great defects. Even if some experimental technologies adopt insertable membrane structures, they only solve the water stop problem within the unit, and it is still very difficult to effectively solve the connection treatment between multiple units, and the overall water stop effect is still very poor, making it difficult to meet the requirements of project implementation.
[0009] In view of the shortcomings of the conventional water stop systems, seeking a water stop system and construction method that are simple, have good integrity, low cost, high construction efficiency, and reliable water stop effect has become a practical breakthrough direction for water stop in the fields of foundation pit support, slopes, river courses, dams, mines, docks, shorelines, etc. Summary of the Invention
[0010] To overcome the weaknesses of the conventional water stop systems, such as poor integrity, implementation in separate units, many unit connection nodes, low construction efficiency, high cost, and poor water stop effect, the present invention provides a new type of traction continuous core membrane water stop system and construction method, which has an excellent overall water stop effect, high construction efficiency, low cost, energy conservation and environmental protection, and can be widely applied to water stop projects in the fields of foundation pits, slopes, river courses, dams, mines, docks, shorelines, etc.
[0011] In a first aspect of the present invention, a traction-type continuous core membrane water-stopping system is provided, which mainly comprises: an original soil mixing body, a closed or long continuous core membrane vertically arranged in the original soil mixing body after implementation, and an auxiliary component for closing the node, wherein the implementation components used to form the water-stopping system include:
[0012] A core membrane, a cassette with a built-in core membrane and an advancing device, an advancing device, an implantation device, a traction rope and a traction device, wherein the advancing device is used to connect the traction rope and the core membrane and to pull the core mold forward and unfold in the original soil mixing body, the implantation device is used to implant the cassette into the original soil mixing body and pull out the cassette after implantation, and the traction device pulls the advancing device and core membrane into the original soil mixing body through the traction rope.
[0013] In the present invention, a fluid or superfluid original soil mixing body is pre-formed on the ground surface. The fluid mixing body is used for implanting the core membrane and is formed by mixing original soil with water, air and admixtures when necessary.
[0014] In a preferred embodiment, after the system is formed, a closed circumference or long continuous waterproof flexible core membrane is formed within the plane position and depth range where water needs to be stopped, thereby achieving an excellent water-stopping effect.
[0015] In a preferred embodiment, the core membrane of the present invention is a film prefabricated according to the waterstop depth and long waterstop length, and its material is geotextile, polymer film material, etc. that meets the requirements of impermeability, certain tensile strength, and certain shear strength.
[0016] In the preferred solution, a fluid or superfluid original soil mixing body is pre-formed on the ground surface. The fluid mixing body is used for implanting the core membrane and is formed by adding water, air and admixtures to the original soil when necessary. The original soil mixing body has no strength requirements and does not need to be mixed with cement.
[0017] The original soil mixing body of the present invention is formed by mixing original soil with water, air and, if necessary, admixture. The original soil mixing body has no strength requirement and does not need to be mixed with cement.
[0018] The auxiliary components of the present invention can be jet-jet piles, mixing piles, grouting components, etc., to achieve the effect of local node sealing.
[0019] In a preferred solution, during implementation, after the original soil mixing body is formed, a cassette is implanted into the starting position of the fluidized original soil mixing body by an implantation device.
[0020] In a further preferred embodiment, the box is a component with a built-in core membrane, a forward device and a traction rope, and the built-in core membrane is folded or wound in the box, and the front end of the core membrane in the forward direction is connected to the forward device.
[0021] In a preferred embodiment, the cassette is made of steel or other high-strength materials, and preferably has rigid attachments on the cassette to enhance its stiffness.
[0022] In a preferred embodiment, the advancing device is a component for connecting the towing rope and the core film and towing the built-in core mold to advance and unfold in the in-situ soil mixing body. Its shape can be blade-shaped or cylindrical, and preferably has a water spraying, air jetting or grouting device inside.
[0023] In a further preferred embodiment, the advancing device is made of steel or other high-strength materials.
[0024] In a preferred embodiment, the implanting device is a power device for implanting and extracting the cassette in the flowing in-situ soil mixing body, and this device adopts vibration, hammering or drilling operation modes.
[0025] In a preferred embodiment, the towing device is a power device for towing the advancing device to advance and unfold the core film in the flowing in-situ soil mixing body along the water-stop line direction on the ground through the towing rope.
[0026] Furthermore, the traction-type continuous core film water-stop system further includes a counterweight for preventing the advancing device from floating up, and a ground guiding member provided when necessary.
[0027] In a preferred embodiment, the water-stop system is a flexible water-stop structure; when necessary, cement can be added to the in-situ soil mixing body to form a rigid water-stop structure.
[0028] The second aspect of the present invention also relates to an implementation assembly of the water-stop system, including a core film, a cassette of the built-in core film and the advancing device, the advancing device, the implanting device, the towing rope and the towing device. Among them, the advancing device is used to connect the towing rope and the core film and tow the core mold to advance and unfold in the in-situ soil mixing body, the implanting device is used to implant the cassette into the in-situ soil mixing body and extract the cassette after implantation, and the towing device towes the advancing device and the core film to unfold in the in-situ soil mixing body through the towing rope.
[0029] The third aspect of the present invention provides a construction method for a traction-type continuous core film water-stop system, including the following construction steps:
[0030] Step 1: The mixing drill rig is positioned according to the line and drilled and mixed to form a closed or long-section flowing in-situ soil mixing body on the ground;
[0031] Step 2: The cassette of the built-in core film, the advancing device and the towing rope are implanted into the starting position of the flowing in-situ soil mixing body through the implanting device;
[0032] Step 3: Connect the advancing device and the towing device through the towing rope, and the towing device tows and advances along the water-stop line direction on the ground, and the core film advances and unfolds in the flowing in-situ soil mixing body;
[0033] Step 4: Pull out the cassette through the implantation device or other equipment, and this section of the core film is completed;
[0034] Step 5: Repeat Steps 2 to 4 until all the core films are completed;
[0035] Step 6: Implement the accessory components at the joint position of the long film to achieve the full closure of the water-stop structure.
[0036] Compared with the existing water-stop systems, the technical solutions and preferred embodiments of the present invention have the following characteristics and beneficial effects:
[0037] 1. Good integrity, excellent water-stop effect and completely controllable. Since a closed or long-section continuous impervious core film is formed after the formation of this system, its integrity and sealing performance are very good. At the same time, since this system relies on the closed impervious flexible core film for water-stop, it does not need to rely on the strength and stiffness of the mixing body, and the core film material is a factory prefabricated material with high tensile and shear strength and imperviousness. Therefore, the water-stop effect of this system is excellent and completely controllable, and the engineering implementation is good.
[0038] 2. High construction efficiency. When implementing this system, a long-section fluidized in-situ soil mixing body can be formed at one time, and a closed or long-section water-stop core film can be formed in the mixing body at one time. At the same time, no cement needs to be added during implementation, the construction is simple, and the construction efficiency is extremely high.
[0039] 3. Low cost. This system only needs to mix the in-situ soil into a fluidized soil mass, and then insert and unfold to form the core film. No cement needs to be incorporated during construction, and the cost is greatly reduced compared with the traditional water-stop structure.
[0040] 4. Wide application range. The traction type continuous core film water-stop system of the present invention is applicable to most strata including conventional fill soil, silt, clay, sand layer, cobble layer, etc., and is not restricted by the groundwater condition during implementation, and has a very wide application range.
[0041] 5. The quality of the water-stop core film is reliable. The water-stop core film of the present invention is a one-time factory prefabricated product, which has the characteristics of imperviousness, high tensile strength, high shear strength, etc., and is not easily damaged during the construction process and the use process of the water-stop system, and the quality is reliable.
[0042] 6. The traction type continuous core film water-stop system of the present invention is a flexible water-stop system. Different from the rigid water-stop structures such as traditional mixing piles, jet grouting piles, secant piles, diaphragm walls, etc., when large displacements occur in the foundation pit or slope, even if the in-situ soil mixing body cracks and is damaged, the water-stop core film can still be used normally, and the water-stop effect is not affected, and the anti-risk ability and safety are excellent. Description of the Drawings
[0043] The accompanying drawings are provided to further understand the present invention, and form a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not limit the present invention. In the accompanying drawings:
[0044] Figure 1a , Figure 1b and Figure 1c are schematic diagrams of the planar composition of the traction type continuous core membrane water stop system.
[0045] Figure 2a , Figure 2b are schematic elevation views of the traction type continuous core membrane water stop system during insertion and traction.
[0046] Figures 3a to 3f are respectively schematic diagrams of the cassette and various embodiments inside in the traction type continuous core membrane water stop system.
[0047] Figure 4a , Figure 4b are schematic diagrams of the core membrane types inside the cassette in the traction type continuous core membrane water stop system.
[0048] Figures 5a to 5d is a schematic diagram of the construction at each stage of the traction type continuous core membrane water stop system.
[0049] Explanation of reference numerals: 1. Core membrane; 2. Undisturbed soil mixing body; 3. Auxiliary member; 4. Cassette; 5. Forward device; 6. Implantation device; 7. Traction device; 8. Traction rope. Specific Embodiments
[0050] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative efforts also fall within the scope of protection of the present invention.
[0051] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which the subject matter of the present invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the specification and the relevant art, and will not be interpreted in an idealized or overly formal form unless otherwise clearly defined herein.
[0052] Refer to Figures 1a - 1b, the components included in the traction - type continuous core - film water - stop system in the embodiment are: the in - situ soil mixing body 2, the closed or long - section continuous core film 1 vertically arranged in the in - situ soil mixing body 2, and the accessory component 3 for closing the joints.
[0053] Refer to Figures 2a - 2b , the components used to implement this water - stop system in the embodiment include the core film 1, the cassette 4, the advancing device 5, the implanting device 6, and the traction device 7. Among them, the cassette 4 contains the core film 1 and the advancing device 5. The advancing device 5 is used to connect the traction rope 8 and the core film 1 and traction the built - in core mold 1 to advance and unfold in the in - situ soil mixing body 2. The advancing device 5 is usually in the shape of a blade, a cylinder, etc. with a shape that reduces resistance. Preferably, a water - spraying, air - jetting, or slurry - spraying device is provided inside it to minimize its advancing resistance as much as possible. The implanting device 6 is used to implant the cassette 4 into the in - situ soil mixing body 2 and pull out the cassette after implantation. The traction device 7 pulls the core film 1 to unfold in the in - situ soil mixing body 2 through the traction rope 8.
[0054] Refer to Figure 1a , Figure 1b , Figure 2a , Figure 2b , the construction method of the traction - type continuous core - film water - stop system is as follows:
[0055] The mixing drill rig is positioned by setting out the line, drilled and mixed to form a closed or long - section fluid in - situ soil mixing body 2 on the ground; the cassette 4 containing the core film 1, the advancing device 5, and the traction rope 8 is implanted into the starting position of the fluid in - situ soil mixing body 2 through the implanting device 6; the advancing device 5 and the traction device 7 are connected through the traction rope 8, and the traction device 7 pulls forward along the water - stop line direction on the ground, and the core film 1 advances and unfolds in the fluid in - situ soil mixing body 2; the cassette 4 is pulled out through the implanting device 6 or other equipment, and this section of the core film is completed; repeat the above steps to complete all the core films; when necessary, the accessory component 3 is implemented at the joint position of the long - section core film 1 to achieve the full - closure of the water - stop structure.
[0056] Refer to Figures 3a - 3f , the cassette 4 is made of steel or other high - strength materials. Its cross - sectional shape can be rectangular, U - shaped, semi - circular, circular, etc. The one - side opening can be in the form of a full opening or a semi - opening, and the form of the cassette 4 can be selected according to the actual engineering requirements. Rigid accessories can be added to the cassette 4 to enhance its stiffness. The cassette 4 contains the core film 1, the advancing device 5, and the traction rope 8. The cassette 4 containing the core film 1, the advancing device 5, and the traction rope 8 is implanted into the starting position of the fluid in - situ soil mixing body 2 through the implanting device 6 to prepare for the next step of advancing and unfolding the core film 1 in the fluid in - situ soil mixing body 2.
[0057] Refer to Figures 4a - 4b , the core film 1 is in a folded manner (as shown in Figure 4a ) or a coiled manner (as shown in Figure 4bAs shown, the core membrane 1 should match the type of the cassette 4 and meet the requirements of on-site construction. The front end of the core membrane 1 in the advancing direction is connected to the advancing device 5, which is used to tow the core membrane 1 to advance and unfold in the fluidized in-situ soil mixing body 2. The cross-sectional shape can be a blade shape, a cylindrical shape or other shapes that reduce resistance. Devices such as water spraying, air spraying, and slurry spraying can be added inside it. The advancing device 5 needs to have sufficient strength and stiffness, and steel materials or other high-strength materials can be used.
[0058] Refer to Figures 5a - 5d , which mainly shows the whole process of the core membrane 1 advancing and unfolding in the fluidized in-situ soil mixing body 2:
[0059] 1) Refer to Figure 5a , implant the cassette 4 into the fluidized in-situ soil mixing body 2 through the implanting device 6. The implantation can adopt operation methods such as vibration, hammering, and drilling; the cassette 4 contains the core membrane 1, the advancing device 5 and the towing rope 8, and the towing rope 8 is firmly connected to the advancing device 5;
[0060] 2) Refer to Figure 5b , firmly connect the towing device 7 to the towing rope 8 on the ground;
[0061] 3) Refer to Figure 5c , on the ground, tow the towing rope 8 through the towing device 7 to tow the advancing device 5 to advance along the water-stop line direction in the fluidized in-situ soil mixing body 2 and unfold the core membrane 1;
[0062] 4) Refer to Figure 5d , when the core membrane 1 is fully unfolded in the fluidized in-situ soil mixing body 2, remove the towing device 7, and then pull out the cassette 4 from the fluidized in-situ soil mixing body 2 through the implanting device 6 or other equipment.
[0063] The second aspect of the present invention also relates to an implementation method for constructing a traction-type continuous core membrane water-stop system, which includes the following steps:
[0064] 1) The mixing drill is positioned by setting out the line and drills and mixes to form a closed or long-section fluidized in-situ soil mixing body 2 on the ground;
[0065] 2) Through the implanting device 6, implant the cassette 4 containing the core membrane 1, the advancing device 5 and the towing rope 8 into the starting position of the fluidized in-situ soil mixing body 2;
[0066] 3) Connect the advancing device 5 and the towing device 7 through the towing rope 8, and the towing device 7 advances along the water-stop line direction on the ground, and the core membrane 1 advances and unfolds in the fluidized in-situ soil mixing body 2;
[0067] 4) Pull out the cassette 4 through the implanting device 6 or other equipment, and this section of the core membrane is completed;
[0068] 5) Repeat steps two to four until all the core membranes 1 are completed;
[0069] 6) Implement the accessory member 3 at the joint position of the long-section thin film to achieve a fully enclosed water stop structure.
[0070] The above embodiments are not an exhaustive list of specific implementation manners, and there may be other embodiments. The purpose of the above embodiments is to illustrate the present invention, and it does not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.
Claims
1. A traction type continuous core membrane water stop system, characterized in that, Comprising: An in-situ soil mixing body (2), a closed or long-section continuous core film (1) vertically arranged in the in-situ soil mixing body (2) after implementation, and an accessory member (3) for closing nodes. The implementation components for forming the water-stop system include: A core film (1), a cassette (4) with the core film (1) and an advancing device (5) built therein, an advancing device (5), an implanting device (6), a towing rope (8), and a towing device (7). Among them, the advancing device (5) is used to connect the towing rope (8) and the core film (1) and tow the core mold (1) to advance and unfold in the in-situ soil mixing body (2). The implanting device (6) is used to implant the cassette (4) into the in-situ soil mixing body (2) and pull out the cassette (4) after implantation. The towing device (7) tows the advancing device (5) and the core film (1) to unfold in the in-situ soil mixing body (2) through the towing rope (8).
2. The traction type continuous core film water stop system according to claim 1, characterized in that, After the system is formed, within the plane position and depth range where water-stop is required, a circumferentially closed or long-section continuous impermeable flexible core film (1) is formed to achieve an excellent water-stop effect.
3. The traction continuous core film water stop system according to claim 1, characterized in that, The core film (1) is a film prefabricated and processed according to the water-stop depth and long-section water-stop length, and its material is a geotextile or polymer film material that meets the requirements of impermeability, a certain tensile strength, and a certain shear strength.
4. The traction type continuous core membrane water stop system according to claim 1, wherein An in-situ soil mixing body (2) in a fluid state or super-fluid state is pre-formed on the ground surface. This fluid mixing body is used for implanting the core film (1) and is formed by mixing in-situ soil with water, adding gas, and adding admixtures if necessary. The in-situ soil mixing body (2) has no strength requirement and may not contain cement.
5. The traction type continuous core film water stop system according to claim 1, characterized in that, The accessory member (3) adopts a jet grouting pile, a mixing pile, or a grouting member to achieve a local node closing effect.
6. The traction-type continuous core membrane water-stopping system according to claim 1, characterized in that: During implementation, after the in-situ soil mixing body (2) is formed, the cassette (4) with the core film (1), the advancing device (5), and the towing rope (8) built therein is implanted into the starting position of the fluid in-situ soil mixing body (2) through the implanting device (6).
7. The traction-type continuous core membrane water-stopping system according to claim 6, characterized in that: The cassette (4) is a component with the core film (1), the advancing device (5), and the towing rope (8) built therein. The built-in core film (1) is in a folded or coiled manner within the cassette (4), and the front end of the core film (1) in the advancing direction is connected to the advancing device (5).
8. The traction-type continuous core membrane water-stopping system according to claim 1, characterized in that: The cassette (4) is made of steel material or other high-strength materials, and rigid accessories are provided on the cassette (4) to enhance its stiffness.
9. The traction type continuous core membrane water stop system according to claim 1, characterized in that, The advancing device (5) is a component used to connect the towing rope (8) and the core film (1) and tow the built-in core mold (1) to advance and unfold in the in-situ soil mixing body (2). Its shape can be blade-shaped or cylindrical, and preferably, a water spraying, gas spraying, or grout spraying device is provided inside.
10. A construction method of a traction type continuous core membrane water stop system, characterized in that, Including the following construction steps: Step 1: The mixing drill rig is positioned by setting out the line, drilled and mixed to form a closed or long-section fluid in-situ soil mixing body (2) on the ground; Step 2: The cassette (4) with the core film (1), the advancing device (5), and the towing rope (8) built therein is implanted into the starting position of the fluid in-situ soil mixing body (2) through the implanting device (6); Step 3: The advancing device (5) and the towing device (7) are connected through the towing rope (8), and the towing device (7) tows and advances along the water-stop line direction on the ground, and the core film (1) advances and unfolds in the fluid in-situ soil mixing body (2); Step 4: Remove the cassette (4) through the implantation device (6) or other equipment, and the core membrane is implanted. Step 5: Repeat steps 2 to 4 until all core membranes (1) are implemented; Step 6: Implement the auxiliary components (3) at the joint positions of the long film segments to achieve full closure of the water-stop structure.