Capillary drainage geogrid

Abstract

This utility model discloses a capillary drainage geogrid, comprising a geogrid body composed of longitudinal and transverse grid strips arranged at uniform intervals; each longitudinal grid strip contains a drainage pipe arranged along its length, the cross-sectional area of ​​the drainage pipe being ≥10mm². 2 Each transverse grid band contains capillary tubes along its length, maintaining communication with the upper part of the drainage pipe wall. The capillary tubes have a diameter of 0.5~1.0mm and are arranged in multiple evenly spaced rows along the width of each transverse grid band. At the bottom of the capillary tubes located between adjacent longitudinal grid bands, a strip-shaped capillary suction port with a width of 0.3~0.5mm is formed along its length. The advantages of this invention are that it significantly improves water absorption and drainage speed, accelerates soil drainage and consolidation, reduces seepage pressure within the soil, improves soil stability, and extends the service life of the geogrid.

Description

Technical Field

[0001] This utility model relates to the field of geotechnical materials, and in particular to a capillary drainage geogrid. Background Technology

[0002] Geogrids are a commonly used geosynthetic material in water conservancy, civil engineering, and municipal engineering. Based on the different materials used in their manufacture, they can be divided into four main categories: plastic geogrids, steel-plastic geogrids, fiberglass geogrids, and polyester warp-knitted geogrids. Geogrids can effectively improve the overall stability and bearing capacity of soil, and also reduce uneven soil settlement, making them widely used in engineering fields.

[0003] Currently, geogrids are mainly used as a binding material for soil reinforcement. However, in areas with fluctuating water levels or areas significantly affected by rainfall, if the soil itself is cohesive soil or silt with low permeability, the drainage process after the soil is soaked is extremely slow. The large amount of water in the soil not only affects the soil's strength indicators, but the resulting seepage pressure also has an adverse effect on soil stability. For the aforementioned areas with high requirements for both drainage and reinforcement, conventional geogrids often cannot meet the drainage needs, resulting in poor soil stability in the area and greatly affecting the service life of the geogrid. Summary of the Invention

[0004] The purpose of this utility model is to provide a capillary drainage geogrid to address the shortcomings of the existing technology.

[0005] To achieve the above objectives, the present invention can adopt the following technical solution:

[0006] The capillary drainage geogrid of this utility model comprises a geogrid body consisting of longitudinal and transverse grid strips arranged at uniform intervals; each of the longitudinal grid strips is provided with a drainage pipe along its length, and the cross-sectional area of ​​the drainage pipe is ≥10mm². 2 Each of the transverse grid strips is provided with a capillary tube along its length that is connected to the upper part of the drain pipe wall. The capillary tube has a diameter of 0.5~1.0mm and is arranged in multiple uniform intervals along the width of each transverse grid strip. The bottom of the capillary tube located between two adjacent longitudinal grid strips is provided with a strip-shaped capillary suction port along its length. The width of the capillary suction port is 0.3~0.5mm.

[0007] Furthermore, the net spacing between two adjacent longitudinal grid strips is 30~50mm, and the net spacing between two adjacent transverse grid strips is the same as the net spacing between two adjacent longitudinal grid strips.

[0008] Furthermore, the longitudinal grid band consists of an upper longitudinal grid band surface layer and a lower longitudinal grid band inner layer, with a T-shaped cross-section. The drainage pipe is embedded in the longitudinal grid band inner layer. The transverse grid band consists of an upper transverse grid band surface layer and a lower transverse grid band inner layer, with a rectangular cross-section. The thickness of the transverse grid band surface layer is the same as that of the longitudinal grid band surface layer. The thickness of the transverse grid band inner layer is less than that of the longitudinal grid band inner layer and is integrated with the upper part of the longitudinal grid band inner layer. The capillary tube is embedded in the transverse grid band inner layer, and the capillary suction port is located on the bottom surface of the transverse grid band inner layer.

[0009] Furthermore, the drain pipe is arranged at an angle from one end to the other, with a slope of 1% to 3%; of course, one end of the drain pipe can also be bent upward to form an elbow.

[0010] Furthermore, multiple pairs of anti-clogging top columns are evenly spaced along the length of both sides of the capillary suction port, which can prevent large stones in the soil from blocking the capillary suction port.

[0011] The advantage of this invention is that it uses a small-diameter capillary tube with a capillary suction port at the bottom to draw water that has seeped into the soil and collect it in the drainage pipe so that it can flow out together. This greatly improves the water absorption and drainage speed, accelerates soil drainage and consolidation, reduces the seepage pressure in the soil, improves soil stability, and extends the service life of the geogrid. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 yes Figure 1 A bottom view.

[0014] Figure 3 yes Figure 1 Enlarged cross-sectional view along the AA direction.

[0015] Figure 4 yes Figure 1 Enlarged cross-sectional view along the BB direction. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figure 1 ,2 As shown, the capillary drainage geogrid of this utility model includes a geogrid body, which is composed of multiple longitudinal grid strips 1 and multiple transverse grid strips 2 arranged at uniform intervals. The net spacing between two adjacent longitudinal grid strips 1 is 30~50mm, and the net spacing between two adjacent transverse grid strips 2 is consistent with the net spacing between two adjacent longitudinal grid strips 1, so that the longitudinal grid strips 1 and transverse grid strips 2 are arranged in a grid pattern.

[0018] Specifically, such as Figure 3 As shown, the longitudinal grid strip 1 consists of an upper longitudinal grid strip surface layer 1.1 and a lower longitudinal grid strip embedded layer 1.2, with an overall T-shaped cross-section; as Figure 4 As shown, the transverse grid strip 2 consists of an upper transverse grid strip surface layer 2.1 and a lower transverse grid strip inner embedded layer 2.2, with an overall rectangular cross-section. The thickness of the transverse grid strip surface layer 2.1 should be consistent with the thickness of the longitudinal grid strip surface layer 1.2, while the thickness of the transverse grid strip inner embedded layer 2.2 is less than the thickness of the longitudinal grid strip inner embedded layer 1.2 and is integrally connected to the upper part of the longitudinal grid strip inner embedded layer 1.2.

[0019] Each longitudinal grid strip 1 is equipped with a drainage pipe 3 along its length, and each transverse grid strip 2 is equipped with a capillary tube 4 along its length, which is connected to the upper part of the wall of the drainage pipe 3. The drainage pipe 3 is embedded in the embedded layer 1.2 within the longitudinal grid strip, and its cross-sectional area is ≥10mm². 2 The capillary tube 4 is embedded in the inner layer 2.2 of the transverse grid strip, and its diameter is 0.5~1.0mm. A drainage pipe 3 is embedded in the inner layer 1.2 of each longitudinal grid strip, and multiple capillary tubes 4 are evenly spaced along the width direction in the inner layer 2.2 of each transverse grid strip.

[0020] In addition, a strip-shaped capillary suction port 5 is provided at the bottom of the capillary tube 4 located between two adjacent longitudinal grid strips 1 along the length direction. The capillary suction port 5 is located on the bottom surface of the buried layer 2.2 in the transverse grid strip, and its orifice width is 0.3~0.5mm. Through the capillary suction port 5, each capillary tube 4 buried in the buried layer 2.2 in the transverse grid strip has an open structure with the opening facing downward, which can continuously use the capillary principle to draw water from the soil.

[0021] Furthermore, to facilitate the rapid discharge of water from the drain pipe 3 and prevent water from accumulating in the drain pipe 3 and flowing back into the capillary tube 4, the drain pipe 3 should be arranged at an angle from one end to the other, with a slope ratio of 1% to 3%. Alternatively, one end of the drain pipe 3 can be bent upwards to form an elbow, thereby increasing the water head pressure at the elbow and accelerating the flow of water from the drain pipe 3 to the other end. To prevent large stones in the soil from clogging the capillary suction port 5, multiple pairs of anti-clogging support columns 6 can be evenly spaced along the length of both sides of the opening of the capillary suction port 5. These anti-clogging support columns 6 will support the large stones in the soil, preventing them from pressing tightly against the capillary suction port 5 and ensuring that there is always a certain gap at the capillary suction port 5, thus ensuring that the capillary tube 4 can continuously absorb water.

[0022] The entire geogrid body utilizes a small-diameter capillary tube 1 with a capillary suction port 5 at the bottom to draw water that has seeped into the soil and collect it in the drainage pipe 3 for outflow. This can greatly improve the water absorption and drainage speed, accelerate soil drainage and consolidation, reduce the seepage pressure in the soil, improve soil stability, and extend the service life of the geogrid.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

Claims

1. A capillary drainage geogrid comprising a geogrid body formed of longitudinally and transversely oriented strips arranged in a regular pattern; characterised in that: Each of the longitudinal grid belts is provided with a drainage pipe along the length direction, and the pipe cross-sectional area of the drainage pipe is greater than or equal to 10 mm 2 Each of the longitudinal grid belts is provided with a drainage pipe along the length direction, and the pipe cross-sectional area of the drainage pipe is greater than or equal to 10 mm 2. The capillary drainage geogrid according to claim 1, characterized in that: The net spacing between two adjacent longitudinal grid strips is 30~50mm, and the net spacing between two adjacent transverse grid strips is the same as the net spacing between two adjacent longitudinal grid strips.

3. The capillary-action drainage geogrid according to claim 1, characterized in that: The longitudinal grid strip consists of an upper longitudinal grid strip surface layer and a lower longitudinal grid strip inner layer, and its cross-section has a T-shaped structure. The drainage pipe is buried in the inner layer of the longitudinal grid strip.

4. The capillary-action drainage geogrid according to claim 3, characterized in that: The transverse grid band consists of an upper transverse grid band surface layer and a lower transverse grid band inner layer, with a rectangular cross-section. The thickness of the transverse grid band surface layer is the same as that of the longitudinal grid band surface layer. The thickness of the transverse grid band inner layer is less than that of the longitudinal grid band inner layer and is integrated with the upper part of the longitudinal grid band inner layer. The capillary tube is embedded in the transverse grid band inner layer, and the capillary suction port is located on the bottom surface of the transverse grid band inner layer.

5. The capillary-action drainage geogrid according to claim 1 or 3, characterized in that: The drainage pipe is arranged at an angle from one end to the other, with a slope ratio of 1% to 3%.

6. The capillary-action drainage geogrid according to claim 1 or 3, characterized by: One end of the drain pipe is bent upwards to form an elbow.

7. The capillary-action drainage geogrid according to claim 1, characterized in that: The capillary suction port has multiple pairs of anti-clogging top columns evenly spaced along its length on both sides of the port's edge.

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