Retaining wall drain hole structure and construction method thereof

Abstract

The invention belongs to the technical field of retaining wall drainage holes, particularly relates to a retaining wall drainage hole structure and a construction method thereof, and provides the following scheme aiming at the problems that in the prior art, in the long-term drainage process, a drainage hole is prone to being blocked, and the drainage efficiency is remarkably reduced. The retaining wall comprises a retaining wall body and a plurality of drain hole bodies arranged in the retaining wall body. The water-permeable filler is arranged on one side of the retaining wall main body; the filling soil is arranged outside the water-permeable filler; the multiple inverted filter layers are arranged in the water-permeable filler and connected with the multiple drainage hole bodies correspondingly, a drainage ditch is formed in one side of the retaining wall body, a drainage ditch is formed in one side of the retaining wall body, and filter screens are arranged in the multiple drainage hole bodies correspondingly. The problem of blockage caused by long-term drainage of the drainage holes can be solved, and the drainage efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of retaining wall drainage holes, and in particular to a retaining wall drainage hole structure and a construction method thereof. Background Art

[0002] In traditional retaining wall projects, drain holes are the key structure for discharging groundwater pressure behind the wall. Their structural design has long used a single pipe drainage mode. Early technologies mostly used prefabricated concrete pipes or direct drilling methods, lacking systematic consideration of seepage water filtration, channel anti-clogging and material durability.

[0003] In the prior art, the drain holes are prone to clogging during long-term drainage, which significantly reduces drainage efficiency. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art that the drainage holes are prone to clogging during long-term drainage, which significantly reduces the drainage efficiency, and to propose a retaining wall drainage hole structure and a construction method thereof.

[0005] The present application provides a retaining wall drainage hole structure and a construction method thereof, which adopts the following technical solutions:

[0006] A retaining wall drainage hole structure, comprising:

[0007] A retaining wall body and a plurality of drain hole bodies arranged inside the retaining wall body;

[0008] Permeable filler, set on one side of the retaining wall body;

[0009] Fill, which is placed outside the permeable fill;

[0010] The plurality of inverse filter layers are all arranged inside the water permeable filler, and the plurality of inverse filter layers are respectively connected to the plurality of drainage hole bodies.

[0011] Furthermore, a drainage ditch is provided on one side of the retaining wall body.

[0012] Furthermore, a filter screen is provided in each of the main bodies of the plurality of drain holes.

[0013] Furthermore, a soil wrapping layer is provided on the outer sides of the plurality of filter screens.

[0014] Furthermore, the drain hole body includes a concrete base layer, and a polymer mortar leveling layer is provided on the outer side of the concrete base layer.

[0015] Furthermore, a permeable crystalline waterproof material is provided on the outer side of the polymer mortar leveling layer, and an epoxy resin coating is provided on the outer side of the permeable crystalline waterproof material.

[0016] Furthermore, a three-dimensional drainage mat is provided on the outside of the epoxy resin coating, and a geotextile filter layer is provided on the outside of the three-dimensional drainage mat.

[0017] Furthermore, a silicon dioxide nano-coating is provided on the outer side of the geotextile filter layer, and an ultraviolet protective paint is provided on the outer side of the silicon dioxide nano-coating.

[0018] Furthermore, a flow sensor is provided on the inner top side of each of the plurality of drain hole bodies.

[0019] A construction method for a retaining wall drain hole structure comprises the following steps:

[0020] S1: Clean the slurry and oil stains on the base surface, chisel it to a roughness of Ra ≥ 1.5mm to enhance the bonding strength, and the cracks should be > 0.2mm. Then apply polymer mortar in layers with a thickness of 10 to 15mm, and apply interface agent to seal the pores. Curing for 48 hours to form a smooth base surface.

[0021] S2: Pre-embed the main body of the drainage hole and tilt it outwards at a 5% slope. Apply penetrating crystalline waterproof material and cure it for 72 hours to activate the self-healing crystallization reaction. Apply epoxy resin coating with a thickness of 0.5mm to form an anti-chemical corrosion barrier. Curing takes 24 hours.

[0022] S3: Lay a three-dimensional drainage mat with a porosity of ≥85%, and wrap it with a geotextile filter layer on the outside and secure it with stainless steel tie bands;

[0023] S4: High-pressure spraying of silica nano-coating with a contact angle of >150°, curing at room temperature for 2 hours, and then roller-coating of UV protective paint with a UV reflectivity of >90% to form a weather-resistant protective layer;

[0024] S5: Filling the end of the drain pipe with a 50cm thick filter layer can prevent water backflow.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The three-dimensional drainage mat of this solution can quickly drain water through the three-dimensional grid structure, and the geotextile filter layer can block fine particles of soil and prevent clogging of the three-dimensional drainage mat;

[0027] 2. This solution uses a silica nano-coating to achieve self-cleaning, reduce the decline in drainage efficiency caused by dirt adhesion, inhibit the growth of microorganisms and moss, and ensure long-term water flow through the main body of the drain hole. At the same time, the UV protective paint can resist environmental erosion and ensure the sustainability of the silica nano-coating function.

[0028] The present invention can improve the clogging problem of the drain hole caused by long-term drainage and improve the drainage efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural schematic diagram of a retaining wall drainage hole structure proposed by the present invention;

[0030] Figure 2 A retaining wall drainage hole structure proposed by the present invention Figure 1 A schematic diagram of the enlarged structure of part A;

[0031] Figure 3 A retaining wall drainage hole structure proposed by the present invention Figure 1 The enlarged structural diagram of part B in the middle;

[0032] Figure 4 This is a schematic diagram of the three-dimensional structure of a filter screen in a retaining wall drainage hole structure proposed by the present invention;

[0033] Figure 5 This is a schematic diagram of the three-dimensional structure of a drainage ditch with a drain hole structure for a retaining wall proposed by the present invention.

[0034] Figure numerals: 1. Retaining wall body; 2. Drain hole body; 3. Filter layer; 4. Fill; 5. Permeable filler; 6. Drainage ditch; 7. Filter mesh; 8. Civil wrapping layer; 9. Concrete base; 10. Polymer mortar leveling layer; 11. Permeable crystalline waterproof material; 12. Flow sensor; 13. Epoxy resin coating; 14. Three-dimensional drainage mat; 15. Geotextile filter layer; 16. Silica nano coating; 17. UV protective paint. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] Example 1

[0037] Reference Figure 1-Figure 5 A retaining wall drainage hole structure comprises: a retaining wall body 1 and a plurality of drainage hole bodies 2 arranged inside the retaining wall body 1. The drainage hole bodies 2 are circular holes with a diameter of 50-100 mm, a horizontal spacing of 2-3 m, a vertical spacing of 1.5-2 m, and are arranged in a staggered plum blossom shape. They are not straight lines and are inclined at a 5% slope toward the outside of the wall to prevent backflow. The lowest hole is 0.3 m above the ground.

[0038] A permeable filler 5 is provided on one side of the retaining wall body 1;

[0039] Fill 4, arranged outside the permeable filler 5;

[0040] Multiple filter layers 3 are arranged inside the permeable filler 5, and the multiple filter layers 3 are respectively connected to the multiple drainage hole bodies 2. The filter layers 3 wrap the inner ends of the drainage hole bodies 2. The thickness of the filter layer 3 is ≥0.3m and is composed of a sand and gravel mixture.

[0041] Reference Figure 1 and Figure 5 A drainage ditch 6 is provided on one side of the retaining wall body 1, which can quickly drain seepage water and reduce the moisture content of the fill 4.

[0042] Reference Figure 4 , a filter screen 7 is provided in each of the plurality of drain hole bodies 2 , and the filter screen 7 can intercept suspended matter such as soil particles and plant roots to prevent the drain hole body 2 from being blocked.

[0043] Reference Figure 2 The outer sides of the multiple filter screens 7 are provided with earth wrapping layers 8 . The earth wrapping layers 8 serve as flexible buffer layers with a thickness of 3-5 mm, which can prevent sharp stones or construction loads from damaging the inner filter screens 7 .

[0044] Reference Figure 2 The main body 2 of the drainage hole includes a concrete base 9, which can withstand the lateral pressure of the soil and serve as the load-bearing foundation for other functional layers to resist deformation. A polymer mortar leveling layer 10 is provided on the outside of the concrete base 9. The polymer mortar leveling layer 10 can fill the cracks and unevenness of the base, enhance the interlayer adhesion, and prevent the permeable crystalline waterproof material 11 from hollowing or peeling due to base defects.

[0045] Reference Figure 2 The outside of the polymer mortar leveling layer 10 is provided with a permeable crystalline waterproof material 11, and the outside of the permeable crystalline waterproof material 11 is provided with an epoxy resin coating 13. The epoxy resin coating 13 can form a highly bonded dense barrier with a strength of ≥3MPa and can resist chemical corrosion and mechanical wear.

[0046] Reference Figure 2 A three-dimensional drainage mat 14 is provided on the outside of the epoxy resin coating 13. The three-dimensional drainage mat 14 can quickly drain water through a three-dimensional grid structure, reduce hydrostatic pressure, buffer frost heave stress, and reduce structural deformation. A geotextile filter layer 15 is provided on the outside of the three-dimensional drainage mat 14. The geotextile filter layer 15 can block fine particles of soil >0.075mm and prevent the three-dimensional drainage mat 14 from clogging.

[0047] Reference Figure 2A silica nano-coating 16 is provided on the outside of the geotextile filter layer 15. The silica nano-coating 16 can achieve self-cleaning, reduce the decline in drainage efficiency caused by the adhesion of dirt, inhibit the growth of microorganisms and moss, and ensure long-term water flow in the drain hole body 2. An ultraviolet protective paint 17 is provided on the outside of the silica nano-coating 16. The ultraviolet protective paint 17 can resist environmental erosion and ensure the continuity of the function of the silica nano-coating 16.

[0048] Reference Figure 3 A flow sensor 12 is provided on the top side of each of the multiple drain hole bodies 2, which can measure the water flow passing through the drain hole body 2 in real time.

[0049] A construction method for a retaining wall drain hole structure comprises the following steps:

[0050] S1: Clean the base surface of slurry and oil, chisel to a roughness of Ra ≥ 1.5mm to enhance adhesion, and cracks > 0.2mm. Then apply polymer mortar in layers with a thickness of 10-15mm, and apply interface agent to seal the pores. Curing for 48 hours to form a smooth base surface.

[0051] S2: Pre-embed the drain hole body 2 and tilt it outwards at a 5% slope. Apply a penetrating crystalline waterproof material 11 and cure it for 72 hours to activate the self-healing crystallization reaction. Apply a 0.5mm thick epoxy resin coating 13 to form a chemical corrosion barrier. Curing takes 24 hours to resist chemical corrosion and mechanical wear.

[0052] S3: Lay a three-dimensional drainage mat 14 with a porosity of ≥85%, and wrap it with a geotextile filter layer 15 on the outside and fix it with stainless steel tie bands to prevent the three-dimensional drainage mat 14 from clogging;

[0053] S4: High-pressure spraying of silica nano-coating 16 with a contact angle greater than 150°, curing at room temperature for 2 hours, and then roller-coating of UV protective paint 17 with a UV reflectivity greater than 90% to form a weather-resistant protective layer that can resist environmental erosion and ensure the continuity of the silica nano-coating 16's function;

[0054] S5: Fill the end of the drain pipe with a 50cm thick filter layer 3 to prevent water backflow.

[0055] The implementation principle of the retaining wall drain hole structure and its construction method in the embodiment of the present application is as follows: when the drain hole body 2 is draining, the earthenware wrapping layer 8 acts as a flexible buffer layer to prevent sharp stones or construction loads from damaging the inner filter screen 7. At the same time, the filter screen 7 can intercept suspended matter such as soil particles and plant roots to prevent the drain hole body 2 from being blocked;

[0056] The polymer mortar leveling layer 10 can prevent the permeable crystalline waterproof material 11 from hollowing or peeling due to defects in the base layer. The three-dimensional drainage mat 14 can quickly drain water through the three-dimensional grid structure, and the geotextile filter layer 15 can block fine particles of soil and prevent the three-dimensional drainage mat 14 from clogging;

[0057] The silica nano coating 16 can achieve self-cleaning, reduce the decrease in drainage efficiency caused by dirt adhesion, inhibit the growth of microorganisms and moss, and ensure long-term water flow through the drain hole body 2. At the same time, the ultraviolet protective paint 17 can resist environmental erosion and ensure the continuity of the function of the silica nano coating 16.

[0058] Example 2

[0059] The difference between this embodiment and the first embodiment is that a high-pressure water pipe is pre-buried on the bottom side of the inner portion of the drain hole body 2 , and pulse-type reverse flushing can be achieved through the high-pressure water pipe to clear siltation.

[0060] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A retaining wall drainage hole structure, characterized by: include: A retaining wall body (1) and a plurality of drain hole bodies (2) arranged inside the retaining wall body (1); A water-permeable filler (5) is provided on one side of the retaining wall body (1); Filling (4), arranged outside the permeable filler (5); The plurality of inverse filter layers (3) are all arranged inside the water permeable filler (5), and the plurality of inverse filter layers (3) are respectively connected to the plurality of drain hole bodies (2).

2. A retaining wall drain hole structure according to claim 1, characterized in that: A drainage ditch (6) is provided on one side of the retaining wall body (1).

3. The retaining wall drain hole structure according to claim 1, characterized in that: A filter screen (7) is provided in each of the plurality of drain hole bodies (2).

4. A retaining wall drain hole structure according to claim 3, characterized in that: A soil wrapping layer (8) is provided on the outer sides of the plurality of filter screens (7).

5. The retaining wall drainage hole structure according to claim 1, characterized in that: The drain hole body (2) comprises a concrete base layer (9), and a polymer mortar leveling layer (10) is provided on the outer side of the concrete base layer (9).

6. The retaining wall drain hole structure according to claim 5, characterized in that: A permeable crystallization type waterproof material (11) is provided on the outer side of the polymer mortar leveling layer (10), and an epoxy resin coating (13) is provided on the outer side of the permeable crystallization type waterproof material (11).

7. The retaining wall drain hole structure according to claim 6, characterized in that: A three-dimensional drainage mat (14) is provided on the outside of the epoxy resin coating (13), and a geotextile filter layer (15) is provided on the outside of the three-dimensional drainage mat (14).

8. The retaining wall drain hole structure according to claim 7, characterized in that: The outer side of the geotextile filter layer (15) is provided with a silicon dioxide nano-coating (16), and the outer side of the silicon dioxide nano-coating (16) is provided with an ultraviolet protective paint (17).

9. The retaining wall drain hole structure according to claim 1, characterized in that: A flow sensor (12) is provided on the inner top side of each of the plurality of drain hole bodies (2).

10. A method for constructing a retaining wall drain hole structure, wherein the retaining wall drain hole structure is the retaining wall drain hole structure according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Clean the base surface of slurry and oil, chisel to a roughness of Ra ≥ 1.5mm to enhance adhesion, and cracks > 0.2mm. Then apply polymer mortar in layers with a thickness of 10-15mm, and apply interface agent to seal the pores. Curing for 48 hours to form a smooth base surface. S2: pre-buried the main body of the drainage hole (2), tilted outwards by 5%, and painted with a penetrating crystalline waterproof material (11), cured for 72 hours to activate the self-healing crystallization reaction, and then scraped with an epoxy resin coating (13) with a thickness of 0.5 mm to form a chemical corrosion barrier, which was cured for 24 hours; S3: Laying a three-dimensional drainage mat (14) with a porosity of ≥85%, and wrapping a geotextile filter layer (15) on the outside, and fixing it with stainless steel tie bands; S4: high-pressure spraying of a silica nanocoating (16) with a contact angle of >150°, curing at room temperature for 2 hours, and then rolling on a UV protective paint (17) with a UV reflectivity of >90% to form a weather-resistant protective layer; S5: Fill the end of the drain pipe with a 50cm thick filter layer (3) to prevent water backflow.

Images