A new type of concealed pipe for saline-alkali land

Abstract

A new type of concealed pipe for saline-alkali land includes a concealed pipe body, an outer ring of which is provided with a geotextile, the concealed pipe body includes a transversely arranged diversion groove, the upper side of the diversion groove is provided with a support frame, the support frame includes a plurality of arc-shaped ribs arranged at intervals along the length direction of the diversion groove, the opening of the arc-shaped ribs is opposite to the diversion groove, and the two ends are respectively connected to the two sides of the diversion groove, the support frame also includes a support rib connected to a plurality of arc-shaped ribs and arranged along the length direction of the diversion groove, the cross section of the diversion groove is V-shaped, and a plurality of first seepage holes are opened on the groove wall. On the basis of ensuring that the concealed pipe body has sufficient strength, the concealed pipe reduces the area where the geotextile fits with the outer surface of the concealed pipe body, increases the area and efficiency of water seepage; at the same time, it also increases the flow rate of water in the diversion groove, avoids the accumulation of sediment inside the concealed pipe body, and thus improves the salt discharge effect.

Description

Technical Field

[0001] The utility model relates to the technical field of saline-alkali land improvement, in particular to a novel concealed pipe for saline-alkali land. Background Art

[0002] At present, the most commonly used saline-alkali land improvement structure is the underground pipe salt drainage. The core principle is to lay an underground drainage salt pipe network system below the groundwater level of the saline-alkali land. The terminal of the underground pipe is directly connected to the drainage ditch. PVC perforated corrugated pipe is used as the underground pipe material. The pipe wall of this corrugated pipe is processed with threaded grooves, and the bottom of the groove is processed with several seepage holes to facilitate the entry of water. In order to block mud and sand, a geotextile is covered on the outside so that the water discharged through the geotextile will not block the underground pipe.

[0003] However, since the seepage holes of the concealed pipe are directly in contact with the outer geotextile, when covered with soil, the geotextile is pressed down on the outer surface of the concealed pipe by the pressure of the soil, and part of the geotextile will fit tightly with the outer surface of the concealed pipe, which results in water only being able to enter the interior of the concealed pipe from the position where the seepage holes are processed, thereby greatly reducing the area and efficiency of water seepage; at the same time, the water that flows into the interior of the concealed pipe after being filtered by the geotextile is still mixed with small particles of mud and sand. Especially when the water flow inside the concealed pipe is small, these mud and sand are easy to accumulate inside the concealed pipe, hindering the flow of water inside the concealed pipe, thereby reducing the salt removal effect. Utility Model Content

[0004] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides a new type of concealed pipe for saline-alkali land.

[0005] The technical solution of this utility model is as follows:

[0006] A new type of concealed pipe for saline-alkali land comprises a concealed pipe body with a geotextile on its outer ring. When the concealed pipe for saline-alkali land is in use, the geotextile is firstly sleeved on the outer ring of the concealed pipe body, and then the whole is buried in the saline-alkali land. During operation, soil covers the geotextile, water is filtered through the geotextile and then flows into the concealed pipe body, and finally is discharged from the concealed pipe body, thereby realizing salt drainage from the saline-alkali land.

[0007] As the core technical concept of the utility model, the concealed pipe body includes a transversely arranged guide groove, and a support frame is provided on the upper side of the guide groove. The support frame includes a plurality of arc-shaped ribs arranged at intervals along the length direction of the guide groove, and the opening of the arc-shaped ribs is opposite to the guide groove, and the two ends are respectively connected to the two sides of the guide groove. The support frame also includes a plurality of arc-shaped ribs connected and arranged along the length direction of the guide groove, so that water can flow into the interior of the concealed pipe body from the vacancy formed between two adjacent arc-shaped ribs and the support ribs, and finally be discharged from the guide groove of the concealed pipe body. Through the special design of the above-mentioned support frame structure, on the basis of ensuring sufficient strength of the concealed pipe body, the area where the geotextile fits the outer surface of the concealed pipe body is reduced, thereby increasing the area and efficiency of water seepage; At the same time, the cross-section of the diversion trough is V-shaped, and a number of first seepage holes are opened on the trough wall, so that water can flow into the diversion trough from the periphery of the diversion trough, and the design of the V-shaped structure of the diversion trough allows the water flowing through the inside of the concealed pipe body to be gathered and discharged in the V-shaped diversion trough, which not only facilitates the collection of water, but also increases the flow rate of water in the diversion trough. Even small particles of mud and sand mixed in the water that flows into the inside of the concealed pipe body after being filtered by the geotextile can be discharged from the concealed pipe body under the impetus of the water flow, especially when the water flow inside the concealed pipe is small, these small particles of mud and sand are not easy to accumulate inside the concealed pipe body, thereby accelerating the flow of water inside the concealed pipe, and further improving the efficiency and effect of salt discharge.

[0008] As a further implementation:

[0009] The cross-sectional shapes of the supporting ribs and the arc ribs are both U-shaped with the opening facing the guide groove, and the structure enhances the structural strength of the supporting ribs and the arc ribs;

[0010] The inner ends of the first water seepage holes are all inclined toward the bottom of the guide groove. The structure facilitates the flow of water into the guide groove from the first water seepage holes, and it is not easy for water to flow out of the guide groove along the outer wall of the guide groove, thereby accelerating the convergence of water and the flow rate inside the concealed pipe body, thereby further improving the salt discharge efficiency.

[0011] As a further implementation:

[0012] The diversion trough includes an upper seepage section and a lower diversion section. Several first seepage holes are all opened in the upper seepage section, and the vertical height of the upper seepage section is 2 / 3 of the total height of the diversion trough. When the water flow inside the concealed pipe is small, the water flowing into the diversion trough and the fine sediment particles mixed therein can be fully gathered in the lower diversion section of the diversion trough, thereby facilitating their discharge from the diversion trough.

[0013] In order to ensure that the support frame has sufficient strength, the following further implementation methods are made:

[0014] The thickness of the supporting ribs and arc ribs is 3cm-5cm, the cross-sectional width of the supporting ribs and arc ribs is 5cm-10cm, the spacing between two adjacent arc ribs is 30cm-50cm, and the thickness of the guide groove wall is not less than 5cm.

[0015] The supporting ribs and the arc ribs are manufactured and formed as one piece.

[0016] Based on the above design, in order to further improve the salt removal effect, a second seepage hole is opened on the supporting ribs and the arc ribs to expand the area for water to separate from the soil and flow into the interior of the concealed pipe body 1, thereby further improving the salt removal effect.

[0017] The utility model has the beneficial effects of a novel concealed pipe for saline-alkali land:

[0018] 1. Through the special structural design of the support frame, on the basis of ensuring that the concealed pipe body has sufficient strength, the area where the geotextile fits the outer surface of the concealed pipe body is reduced, thereby increasing the area and efficiency of water seepage;

[0019] Second, through the design of the V-shaped structure of the guide groove, the water flowing through the inside of the concealed pipe body can be collected and discharged in the V-shaped guide groove, which not only facilitates the collection of water, but also increases the flow rate of water in the guide groove. Even when the water flow inside the concealed pipe is small, small particles of sediment flowing into the inside of the concealed pipe body can be discharged from the concealed pipe body under the impetus of the water flow, avoiding the accumulation of sediment inside the concealed pipe body, thereby improving the salt discharge effect;

[0020] 3. By opening a plurality of first water seepage holes on the groove wall of the diversion groove, water can also flow into the diversion groove from the periphery of the diversion groove, thereby further improving the efficiency and effect of salt discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In the attached picture:

[0022] Figure 1 This is a top view of a new type of concealed pipe for saline-alkali land according to the utility model;

[0023] Figure 2 for Figure 1 AA section diagram in FIG.

[0024] The components represented by the reference numerals in the figure are:

[0025] 1. Concealed pipe body; 11. Diversion groove; 111. First seepage hole; 12. Arc ribs; 13. Support ribs; 2. Geotextile. DETAILED DESCRIPTION

[0026] Combination Figure 1 and Figure 2The present embodiment provides a new type of concealed pipe for saline-alkali land, which includes a concealed pipe body 1 and a geotextile 2 on its outer ring. When in use, the geotextile 2 is first sleeved on the outer ring of the concealed pipe body 1, and then the whole is buried in the saline-alkali land. When working, the soil covers the geotextile 2, the water is filtered and separated by the geotextile 2, and then flows into the interior of the concealed pipe body 1, and finally discharged from the concealed pipe body 1, thereby realizing the salt discharge of the saline-alkali land.

[0027] Regarding the specific structure of the concealed pipe body 1, Figure 2 For example:

[0028] The concealed pipe body 1 includes a transversely arranged guide groove 11 and a support frame arranged on the upper side of the guide groove 11, wherein the support frame is used to support the geotextile 2 located on the upper side of the concealed pipe body 1 and the soil covering it, and the guide groove 11 is used to discharge the water filtered and separated by the geotextile 2.

[0029] Specifically, the structure of the guide groove 11 is as follows:

[0030] The cross section of the guide groove 11 is V-shaped, and the groove wall thickness of the guide groove 11 is not less than 5 cm, so as to ensure that the guide groove 11 has sufficient strength to provide stable support for the support frame.

[0031] The guide groove 11 includes an upper seepage section and a lower guide groove section, wherein the vertical height of the upper seepage section is 2 / 3 of the total height of the guide groove 11, and a plurality of first seepage holes 111 are opened on the upper seepage section of the guide groove 11, and the inner ends of the plurality of first seepage holes 111 are inclined toward the bottom of the guide groove 11, so that the water seal around the guide groove 11 can flow into the guide groove 11 from the first seepage holes 111, and the water is not easy to flow out of the guide groove 11 along the outer wall of the guide groove 11 to the outside, thereby accelerating the convergence of the water, and the V-shaped structure of the guide groove 11 increases the flow rate of the water inside the concealed pipe body 1, so that even when the water flow inside the concealed pipe is small, the water flowing into the guide groove 11 and the fine sediment particles mixed therein can be fully gathered in the lower guide section of the guide groove 11, thereby facilitating its discharge from the guide groove 11, thereby improving the salt removal effect.

[0032] Specifically for the structure of the support frame:

[0033] The support frame includes a plurality of arcuate ribs 12 and support ribs 13, and the cross-sectional shapes of the support ribs 13 and the arcuate ribs 12 are both U-shaped with their openings facing the guide groove 11. The U-shaped structure with its opening facing the guide groove 11, compared with the commonly used plate structure and cylindrical structure, reduces the overall weight of the concealed pipe body 1 while also enhancing the structural strength of the concealed pipe body 1.

[0034] A plurality of arcuate ribs 12 are arranged at intervals along the length direction of the guide groove 11, the opening of the arcuate rib 12 is opposite to the guide groove 11, and the two ends are respectively connected to the two sides of the guide groove 11, and the support ribs 13 are arranged along the length direction of the guide groove 11, and are connected to a plurality of arcuate ribs 12 along the length direction of the guide groove 11, forming a stable support for the geotextile 2 and the mud and sand. It can be understood that the support ribs 13 can also be set to a plurality of ribs according to actual needs, and there is no excessive restriction on the number of support ribs 13.

[0035] In this embodiment, the thickness of the support rib 13 and the arc rib 12 are both 3cm-5cm, the cross-sectional width of the support rib 13 and the arc rib 12 are both 5cm-10cm, and the spacing between two adjacent arc ribs 12 is 30cm-50cm, so as to ensure that the support frame has sufficient strength while meeting the use requirements. At the same time, the support rib 13 and the arc rib 12 can also be set to be manufactured as an integral part to improve the strength of the support frame. In addition, a second seepage hole is also opened on the support rib 13 and the arc rib 12 to expand the area for water to flow into the interior of the concealed pipe body 1 after separation from the soil, thereby further improving the salt discharge effect.

[0036] The utility model is a new type of concealed pipe for saline-alkali land. When in use, the geotextile 2 is first sleeved on the outer ring of the concealed pipe body 1, and then the whole is buried in the saline-alkali land. When working, the soil covers the geotextile 2, and the geotextile 2 is supported by a plurality of arc-shaped ribs 12 and supporting ribs 13. After the water is filtered and separated by the geotextile 2, it flows into the diversion groove 11 from the area surrounded by two adjacent arc-shaped ribs 12 and supporting ribs 13, and from the second seepage holes opened on the plurality of arc-shaped ribs 12 and supporting ribs 13. At the same time, the water located around the diversion groove 11 flows obliquely along the plurality of first seepage holes 111 from the outside of the diversion groove 11 to the bottom of the diversion groove 11 into the inside of the diversion groove 11. After water flows into the interior of the concealed pipe body 1 from all directions, it gathers in the V-shaped guide groove 11 and is finally discharged from the V-shaped guide groove 11, thereby realizing salt removal from saline-alkali land. In the above process, fine sediment mixed in the water gathers in the guide groove 11 or moves to the lower guide section in the guide groove 11 by its own gravity. At this time, due to the special structure of the V-shaped guide groove 11, the cross-sectional area of ​​the lower part gradually decreases, and the water flow speed gradually increases, so that these fine sediments can be discharged from the guide groove 11 along with the water without accumulating inside the concealed pipe body 1, thereby maintaining the normal flow of water inside the concealed pipe body 1, so it has a better salt removal effect.

Claims

1. A new type of concealed pipe for saline-alkali land, characterized in that: It comprises a concealed pipe body (1), the outer ring of which is provided with a geotextile (2); The concealed pipe body (1) comprises a transversely arranged flow guide groove (11), and a support frame is provided on the upper side of the flow guide groove (11); The support frame comprises a plurality of arc-shaped ribs (12) arranged at intervals along the length direction of the guide groove (11); the opening of the arc-shaped rib (12) is opposite to the guide groove (11), and the two ends are respectively connected to the two sides of the guide groove (11); The support frame further comprises support ribs (13) connected to a plurality of arc-shaped ribs (12) and arranged along the length direction of the guide groove (11); The cross section of the guide groove (11) is V-shaped, and a plurality of first water seepage holes (111) are provided on the groove wall.

2. A novel concealed pipe for saline-alkali land as claimed in claim 1, characterized in that: The cross-sectional shapes of the supporting ribs (13) and the arc-shaped ribs (12) are both U-shaped with the opening facing the guide groove (11).

3. A novel concealed pipe for saline-alkali land as claimed in claim 1, characterized in that: The inner ends of the plurality of first water seepage holes (111) are all inclined toward the bottom of the guide groove (11).

4. A novel concealed pipe for saline-alkali land as claimed in claim 3, characterized in that: The guide groove (11) comprises an upper water seepage section and a lower water seepage section, the plurality of first water seepage holes (111) are all arranged in the upper water seepage section, and the vertical height of the upper water seepage section is 2 / 3 of the total height of the guide groove (11).

5. The novel concealed pipe for saline-alkali land according to claim 1, characterized in that: The thickness of the supporting ribs (13) and the arc-shaped ribs (12) are both 3 cm to 5 cm.

6. A novel concealed pipe for saline-alkali land as claimed in claim 1, characterized in that: The cross-sectional widths of the support ribs (13) and the arc-shaped ribs (12) are both 5 cm to 10 cm.

7. The novel concealed pipe for saline-alkali land according to claim 1, characterized in that: The distance between two adjacent arc-shaped ribs (12) is 30cm-50cm.

8. The novel concealed pipe for saline-alkali land according to claim 1, characterized in that: The support ribs (13) and the arc-shaped ribs (12) are both provided with second water seepage holes.

9. A novel concealed pipe for saline-alkali land according to any one of claims 1 to 8, characterized in that: The thickness of the wall of the guide groove (11) is not less than 5 cm.

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