A repairable combined reinforced drainage structure

Abstract

The application discloses a repairable combined reinforced drainage structure, which comprises a sleeve pipe with a plurality of small drainage holes and a drainage pipe, the drainage pipe is sleeved in the sleeve pipe and is movably connected with the sleeve pipe; a first filter layer structure is arranged on the outer surface of the sleeve pipe, a separation cavity is formed between the sleeve pipe and the drainage pipe, a second filter layer structure and a dredging structure for cleaning deposits in the separation cavity are arranged in the separation cavity. The application has the advantages of simple structure, easy procurement of manufacturing materials, low manufacturing cost, convenient and efficient installation, separable installation of the drainage pipe and the sleeve pipe, convenient disassembly for later operation and maintenance, long drainage life cycle, ideal drainage effect, high compressive strength and high practicability.

Description

Technical Field

[0001] The invention relates to a repairable combined reinforced drainage structure, belonging to the technical field of deep slope drainage. Background Art

[0002] In engineering construction, the water-rich zone of the slope often contains a large amount of pore water and fissure water due to its high porosity and low density. There is also runoff water in some sandy soil and gravel soil. Affected by groundwater, when the effective shear strength of the slope soil is low and the gradation is poor, fine clay particles may be lost with the seepage of groundwater, causing the slope to lose stability due to seepage. For foundation pit projects, pumping wells are generally used to reduce the depth of groundwater. However, slope projects are generally affected by the terrain, site construction conditions and soil particle gradation, making it difficult to achieve groundwater pumping. In the project, inclined drainage pipes are often used for groundwater diversion and drainage design. At present, pre-drilling construction is often used, and a single-layer perforated drainage pipe design is inserted into the hole. The outside of the pipe is wrapped with permeable geotextile. During the insertion of the drainage pipe, the permeable geotextile is easily damaged by the scratches of coarse particles in the hole, making it difficult to achieve a complete isolation effect, resulting in fine clay entering the pipe and affecting the drainage effect.

[0003] Furthermore, as groundwater seepage and fine particles flow, the groundwater level around the drainage holes drops, increasing effective soil stress. This makes the drainage pipes susceptible to compression and damage during later operations, leading to drainage hole failure. The drainage pipes used in the project include PVC and stainless steel pipes, which are filled with a permeable sand layer. During use, PVC pipes are easily crushed, and the permeable sand layer filled with fine-grained clay provides poor drainage, making it difficult for the drainage holes to achieve their designed effects. Summary of the Invention

[0004] In view of this, the present invention provides a repairable combined reinforced drainage structure that meets the deep drainage requirements of the slope without affecting the solid particles in the slope, effectively improving the drainage capacity and deep drainage effect of the slope in the later operation process, and at the same time, the drainage holes can be regularly inspected and repaired, which can overcome the shortcomings of the existing technology.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A repairable combined reinforced drainage structure includes a casing with a plurality of drainage holes and a drainage pipe, wherein the drainage pipe is sleeved in the casing and movably connected thereto; a first filter layer structure is provided on the outer surface of the casing, a compartment is formed between the casing and the drainage pipe, and a second filter layer structure and a dredging structure for cleaning sediments in the compartment are provided in the compartment.

[0007] The aforementioned dredging structure is a rubber ring structure sleeved outside the drain pipe.

[0008] The aforementioned rubber ring structure is a spiral rubber ring arranged at the front end of the drain pipe body, and the outer diameter of the spiral rubber ring matches the inner diameter of the sleeve.

[0009] The aforementioned rubber ring structure is a plurality of sealing and cleaning rubber rings that are segmented and fixed on the outside of the drain pipe along the length direction of the drain pipe, and the outer diameter of the sealing and cleaning rubber ring matches the inner diameter of the sleeve.

[0010] It also includes a blower for cleaning sediments in the cavity between the casing and the drain pipe; the blower is connected to the casing through a blower pipe.

[0011] The aforementioned first filter layer structure is a first permeable geotextile wrapped around the outer surface of the casing;

[0012] The aforementioned second filter layer structure includes a second permeable geotextile arranged on the outer circumference side of the drain pipe. The second permeable geotextile is supported by multiple ribs evenly distributed on the outer surface of the drain pipe, so that a drainage cavity is formed between the outer circumference side of the drain pipe and the second permeable geotextile.

[0013] Radial screw holes are provided on the outer circumference of the drain pipe, and the ribs are fixed to the outer side of the drain pipe by rust-proof screws with rubber washers.

[0014] The radial screw holes and the drainage holes on the aforementioned drain pipe are spaced in sequence and distributed at 120 degrees, so that the ribs are distributed at 120 degrees on the outer surface of the drain pipe.

[0015] The aforementioned sleeve comprises a sleeve with two ends open, one end of the sleeve is detachably connected to a conical pipe cap for orientation, and the other end is detachably connected to a fixed pipe plug with a sealing gasket.

[0016] The aforementioned drain pipe includes a drain pipe body, and the front end of the drain pipe body is detachably connected to a conical clamp; the drain pipe body is sleeved in the sleeve, and the conical clamp at the front end is clamped in the conical pipe cap, and the end is sealed by a fixed pipe plug.

[0017] Compared with the prior art, the present invention discloses a repairable combined reinforced drainage structure, which includes a casing with a plurality of drainage holes and a drainage pipe. The drainage pipe is sleeved in the casing and movably connected thereto. A first filter layer structure is provided on the outer surface of the casing, a compartment is formed between the casing and the drainage pipe, and a second filter layer structure and a silt removal structure for cleaning sediments in the compartment are provided in the compartment. During construction, it is set in an upward-sloping drainage hole in the water-rich zone of the slope. The upward-sloping drainage hole has a slope of 3% to 5% with the horizontal plane to facilitate drainage. The pore water in the water-rich slope enters the casing through the first permeable geotextile under the action of gravity. The bottom of the compartment formed between the casing and the drainage pipe has a certain range of water storage capacity. The pore water in the slope is then discharged through the drainage pipe and finally drained to the nearby drainage system through the drainage ditch, thereby increasing the overall stability of the slope. A second filter layer structure is added to the compartment. The second filter layer structure includes a second permeable geotextile fabric arranged on the outer circumference of the drainage pipe. The second permeable geotextile fabric is supported by multiple ribs evenly distributed on the outer surface of the drainage pipe. This creates a drainage cavity between the outer circumference of the drainage pipe and the second permeable geotextile fabric. This two-layer filtration not only effectively prevents small clay particles from entering the drainage pipe, maintaining a good drainage effect, but also provides a certain water storage capacity, good compressive strength, and strong drainage capacity. Furthermore, a dredging structure can be used to promptly clean sediment in the compartment, facilitating cleaning and repair, restoring its permeability, and enabling reuse.

[0018] The beneficial effects of the present invention are:

[0019] The structure of the present invention is simple, and the manufacturing materials used are easy to purchase, and the manufacturing cost is low; the installation is convenient and efficient, the drain pipe and the sleeve can be installed separately, which is convenient for later operation, maintenance and disassembly; the drainage life cycle is long, the drainage effect is ideal, and it has high compressive strength and strong practicality.

[0020] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings, in which:

[0022] Figure 1 This is a structural diagram of Example 1 of the present invention.

[0023] Figure 2 for Figure 1 Schematic diagram of the side cross-section structure.

[0024] Figure 3 for Figure 1 Schematic diagram of the structure of the middle casing.

[0025] Figure 4 for Figure 1 Schematic diagram of the structure of the middle drain pipe.

[0026] Figure 5 This is an enlarged schematic diagram of the conical tube cap of the sleeve.

[0027] Figure 6 This is an enlarged schematic diagram of the fixed pipe plug of the casing.

[0028] Figure 7 This is an enlarged schematic diagram of the tapered clamp of the drain pipe.

[0029] Figure 8 This is an enlarged schematic diagram of the ribs on the drain pipe.

[0030] Figure 9 This is a structural diagram of Example 2 of the present invention.

[0031] Figure 10 for Figure 9 Schematic diagram of the structure of the middle drain pipe. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, and are not intended to limit the scope of protection of the present invention.

[0033] The following will refer to the attached Figure 1 ~Attachment Figure 8 , which is the first embodiment of the present invention, provides a repairable combined reinforced drainage structure, including a casing 1 with a plurality of drainage holes and a drainage pipe 2, the drainage pipe 2 is sleeved in the casing 1 and movably connected thereto; a first filter layer structure is provided on the outer surface of the casing 1, a compartment is formed between the casing 1 and the drainage pipe 2, and a second filter layer structure and a silt removal structure for cleaning sediments in the compartment are provided in the compartment.

[0034] The sleeve 1 comprises a sleeve with two open ends. A conical cap 101 for orientation is detachably connected to one end of the sleeve, and a fixed pipe plug 102 with a sealing gasket 103 is detachably connected to the other end. Specifically, one end of the sleeve has an external thread, and the conical cap 101 has a matching internal thread, allowing the conical cap 101 to be threadedly fixed to one end of the sleeve. The other end of the sleeve has an internal thread, and the fixed pipe plug 102 has a matching external thread, allowing the fixed pipe plug 102 to be threadedly fixed to the other end of the sleeve. Preferably, the sleeve 1 is made of steel pipe to resist damage from compression during use.

[0035] The drain pipe 2 includes a drain pipe body, and the front end of the drain pipe body is detachably connected to a conical clamp 201; the drain pipe body is sleeved in the sleeve 1, and the conical clamp 201 at the front end is clamped in the conical pipe cap 101, and the end is sealed by a fixed pipe plug 102.

[0036] Specifically, the conical clamp 201 is screwed and fixed to the drain pipe body through a threaded joint.

[0037] The desilting structure is a rubber ring structure sleeved on the outside of the drain pipe 2.

[0038] Preferably, the rubber ring structure is a spiral rubber ring 3 positioned at the front end of the drain pipe body near the tapered clamp 201, with the outer diameter of the spiral rubber ring 3 matching the inner diameter of the casing 1. A groove matching the spiral rubber ring 3 is provided on the drain pipe body, and the spiral rubber ring 3 is secured in the groove. If necessary, rubber adhesive can be added to enhance the firmness of the spiral rubber ring 3. If the drainage effect of the drain hole is poor, the drain pipe can be removed, and the spiral rubber ring 3 can be used to clear sediment in the cavity between the casing 1 and the drain pipe 2.

[0039] The first filter layer structure is a first permeable geotextile 8 wrapped around the outer surface of the casing 1 .

[0040] The second filter layer structure includes a second permeable geotextile 5 arranged on the outer circumferential side of the drainage pipe 2. The second permeable geotextile 5 is supported by a plurality of annular ribs 6 evenly distributed on the outer surface of the drainage pipe 2, so that a drainage cavity is formed between the outer circumferential side of the drainage pipe 2 and the second permeable geotextile, which has strong drainage capacity and good compressive strength.

[0041] Radial screw holes are provided on the outer circumference of the drain pipe 2 , and the ribs 6 are fixed to the outer side of the drain pipe 2 by means of rust-proof screws 7 with rubber washers.

[0042] The radial screw holes and the drainage holes on the drain pipe 2 are spaced in sequence and distributed at 120 degrees, so that the ribs 6 are distributed at 120 degrees on the outer surface of the drain pipe 2.

[0043] During construction, the casing 1 with the hole facing upward is statically pressed into the pre-drilled hole by a hydraulic press. The pre-drilled hole should be set at a slope of 3% to 5% with the horizontal surface to facilitate drainage of the drain hole. At the same time, a drainage ditch should be set at the outlet of the drain hole to direct the seepage water from the drain hole to the platform drainage ditch.

[0044] It is inevitable that the first permeable geotextile 8 on the outside of the casing 1 rubs against the rock and soil in the hole, and is easily damaged locally. When the damaged area overlaps with the permeable hole of the casing 1, some fine clay particles penetrate into the casing 1 along with the pore water. At this time, the second permeable geotextile 5 wrapped on the outside of the drain pipe 2 can effectively block the fine clay particles in the cavity between the casing 1 and the drain pipe 2.

[0045] After a long period of drainage, small clay particles will adhere to the inner wall of the casing 1 and the second permeable geotextile 5, affecting the permeability of the water holes. At this time, the fixed pipe plug 102 can be rotated to unscrew it, and a certain external force can be applied to pull out the drainage pipe 2. At this time, the spiral rubber ring 3 can bring out the small clay particles on the outside of the drainage pipe 2 inside the casing 1, thereby achieving the effect of cleaning the drainage holes.

[0046] After taking out the drain pipe 2, you can choose whether to replace the second permeable geotextile 5 based on the permeability of the second permeable geotextile 5 outside the drain pipe 2. After replacement, statically press the drain pipe 2 into the casing 1 again, and install the sealing gasket 103 and the fixed pipe plug 102.

[0047] When the casing 1 and the drain pipe 2 are bent and deformed to a certain extent, the drain pipe 2 cannot be removed from the casing 1. A blower can be set at the port of the fixed pipe plug 102, and pressure injection of wind pressure or alternating pressure and exhaust operations can be performed on the drain hole to blow the fine clay particles adsorbed on the outside of the permeable hole away from the second permeable geotextile 5, so that its permeability is restored.

[0048] Example 2

[0049] The following will refer to the attached Figure 9 ~Attachment Figure 10 , which is the second embodiment of the present invention,

[0050] When the drain hole is long, a large amount of infiltrated clay may exist in the cavity between the casing 1 and the drain pipe 2. At this time, the spiral rubber ring 3 in the first embodiment will push a large amount of clay, which may locally block the pipe and make it difficult to extract the drain pipe 2.

[0051] In this case, the rubber ring structure can be composed of multiple sealing and cleaning rubber rings 4 that are segmented and fixed to the outside of the drain pipe 2 along the length direction. The outer diameter of the sealing and cleaning rubber rings 4 matches the inner diameter of the casing 1. A segmented drainage design is adopted, and the ribs 6 are segmented and fixed by the sealing and cleaning rubber rings 4. The installation of the sealing and cleaning rubber rings 4 can effectively increase the drainage and silt removal capacity of the drain pipe 2 while achieving segmented displacement of clay particles to avoid local pipe jams.

[0052] The above description is only a preferred embodiment of the present invention and does not constitute any form of confidentiality restriction on the present invention. Any simple modification, equivalent change and modification of the above embodiment that does not deviate from the content of the technical solution of the present invention and is based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A repairable combined reinforced drainage structure, characterized by: The invention comprises a casing (1) with a plurality of drainage holes and a drainage pipe (2), wherein the drainage pipe (2) is sleeved in the casing (1) and movably connected thereto; a first filter layer structure is provided on the outer surface of the casing (1), a compartment is formed between the casing (1) and the drainage pipe (2), and a second filter layer structure and a dredging structure for cleaning sediments in the compartment are provided in the compartment; The first filter layer structure is a first permeable geotextile (8) wrapped around the outer surface of the casing (1); The second filter layer structure comprises a second permeable geotextile (5) arranged on the outer circumference of the drainage pipe (2), the second permeable geotextile (5) being supported by a plurality of ribs (6) uniformly distributed annularly on the outer surface of the drainage pipe (2), so that a drainage cavity is formed between the outer circumference of the drainage pipe (2) and the second permeable geotextile (5).

2. The repairable combined reinforced drainage structure according to claim 1, characterized in that: The desilting structure is a rubber ring structure sleeved outside the drain pipe (2).

3. The repairable combined reinforced drainage structure according to claim 2, characterized in that: The rubber ring structure is a spiral rubber ring (3) arranged at the front end of the drain pipe body, and the outer diameter of the spiral rubber ring (3) matches the inner diameter of the sleeve (1).

4. The repairable combined reinforced drainage structure according to claim 2, characterized in that: The rubber ring structure comprises a plurality of sealing and cleaning rubber rings (4) which are fixed to the outside of the drain pipe (2) in sections along the length direction of the drain pipe (2), and the outer diameter of the sealing and cleaning rubber rings (4) matches the inner diameter of the sleeve (1).

5. The repairable combined reinforced drainage structure according to claim 2, characterized in that: It also includes a blower for cleaning sediments in the cavity between the casing (1) and the drain pipe (2); the blower is connected to the casing (1) via a blower pipe.

6. The repairable combined reinforced drainage structure according to claim 1, characterized in that: Radial screw holes are provided on the outer circumference of the drain pipe (2), and the ribs (6) are fixed to the outer side of the drain pipe (2) via rust-proof screws (7) with rubber washers.

7. The repairable combined reinforced drainage structure according to claim 6, characterized in that: The radial screw holes and the drainage holes on the drain pipe (2) are spaced in sequence and distributed at 120 degrees, so that the ribs (6) are distributed at 120 degrees on the outer surface of the drain pipe (2).

8. The repairable combined reinforced drainage structure according to claim 1, characterized in that: The sleeve (1) comprises a sleeve with two open ends, one end of the sleeve being detachably connected to a conical pipe cap (101) for orientation, and the other end being detachably connected to a fixed pipe plug (102) with a sealing gasket (103).

9. The repairable combined reinforced drainage structure according to claim 8, characterized in that: The drain pipe (2) comprises a drain pipe body, the front end of which is detachably connected to a conical clamp (201); the drain pipe body is sleeved in the sleeve (1), and the conical clamp (201) at the front end is clamped in the conical pipe cap (101), and the end is abutted and sealed by a fixed pipe plug (102).

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