CN212316714U

CN212316714U - High embankment drainage french drain of filling up

Info

Publication number: CN212316714U
Application number: CN202021355844.5U
Authority: CN
Inventors: 姬树军; 杨云志; 赵旭东; 王科; 谢思龙
Original assignee: Sinohydro Bureau 7 Co Ltd
Current assignee: Sinohydro Bureau 7 Co Ltd
Priority date: 2020-07-12
Filing date: 2020-07-12
Publication date: 2021-01-08
Anticipated expiration: 2030-07-12

Abstract

The utility model discloses a high embankment drainage blind ditch that fills up. The drainage blind ditch is arranged in an embankment higher than the ground of a foundation, the drainage blind ditch is an entity blind ditch constructed by various building stones, and the cross section of the entity blind ditch comprises: the gravel layer is located on the bottom surface and built on embankment filling soil, the solid blind ditch is located in the center of the foundation of the gravel layer and formed by dry rubbles, the filled gravel layer covers the periphery of the solid blind ditch formed by the dry rubbles, the permeable geotextile covers the periphery of the gravel layer, and the coarse sand layer is filled on the periphery of the permeable geotextile. The utility model discloses high embankment drainage french drain structure of filling out can be through the solid passageway drainage that dry rubble constitutes, can effectively filter impurity through the geotechnological cloth that permeates water moreover to do not block up drainage channel, play better drainage effect, the utility model discloses used material can realize drawing materials on the spot, and convenient construction, water permeability is good, can effectively get rid of road bed ponding, keeps the stability of road bed.

Description

High embankment drainage french drain of filling up

Technical Field

The utility model belongs to the technical field of the building engineering construction, especially, belong to road drainage engineering construction technical field, in particular to highly fill out embankment drainage french drain.

Background

At present, because a high-fill embankment is excessively high in filling, the settlement period is short, the construction period is influenced by precipitation, construction processes and the like, and large embankment settlement often occurs in the later period to cause embankment diseases. The embankment filler is generally filled by adopting soil and stones, the influence of water is large, the landslide is caused due to unsmooth drainage, and the influence is brought to later-stage operation.

The drainage ditch is arranged in the high fill embankment, which is one of the methods for solving the problem of unsmooth drainage at present; the existing drainage measures are that a drainage ditch or a drainage filter pipe is arranged, and a reverse filter layer and the like are arranged on the drainage ditch or the drainage filter pipe, so that the problems of high construction cost, uncontrollable construction quality, easy deformation, easy damage and the like exist.

Disclosure of Invention

The utility model discloses a fill out embankment drainage french drain highly according to prior art's not enough. The utility model aims at providing a can utilize the original site material to fill out the high embankment drainage blind ditch of building for solve the embankment drainage, prevent that the embankment from damaging.

The utility model discloses a following technical scheme realizes:

fill out embankment drainage blind ditch highly, the drainage blind ditch arranges in the embankment that is higher than basic ground, its characterized in that: the drainage blind ditch is an entity blind ditch constructed by various building stones, and the cross section of the entity blind ditch comprises: the gravel layer is located on the bottom surface and built on embankment filling soil, the solid blind ditch is located in the center of the foundation of the gravel layer and formed by dry rubbles, the filled gravel layer covers the periphery of the solid blind ditch formed by the dry rubbles, the permeable geotextile covers the periphery of the gravel layer, and the coarse sand layer is filled on the periphery of the permeable geotextile.

The lower ends of two sides of the permeable geotextile wrapped on the periphery of the gravel layer extend into the foundation of the mortar rubble layer to be fixed.

The grouted rubble layer is formed by masonry of rubbles and M7.5 cement mortar, and the maximum thickness of the rubbles is not more than 15 cm.

The solid blind ditch is a drainage channel and is formed by directly building rubbles, and the maximum thickness of the rubbles is not more than 15 cm.

The particle size of the broken stone forming the broken stone layer is less than 2 cm.

The drainage blind ditches arranged in the embankment higher than the foundation ground comprise longitudinally and transversely arranged drainage blind ditches, and the longitudinally and transversely arranged drainage blind ditches are communicated with each other to form a net drainage structure.

The drainage blind ditch is built by adopting the following construction method:

s1, leveling the blind ditch foundation, and building a grouted rubble layer by using M7.5 cement mortar and rubbles on the filled foundation to serve as the blind ditch foundation; the maximum thickness of the flaky stone is not more than 15 cm;

s2, paving dry rubbles with the width of 30cm and the height of 25cm in the middle of the grouted rubble layer to serve as solid blind ditches, paving broken stones with the particle size of less than 2cm on two sides and the top surface of each dry rubble layer to form a rubble layer, and paving the rubble layer with the width of 10 cm; the two sides of the gravel layer and the periphery of the top surface are coated with permeable geotextile, coarse sand layers with the thickness of 10cm are laid on the two sides of the permeable geotextile and the periphery of the top surface, and the peripheries of the coarse sand layers are filled with soil for covering;

s3, filling soil on the top to the thickness of not less than 70 cm; and finishing the construction of the drainage blind ditch structure.

The utility model discloses the grout rubble layer of drainage french drain adopts M7.5 cement mortar to build by laying bricks or stones as cementitious material, and the rubble maximum diameter is not more than 15cm, and it relies on stone self weight and cementitious material bonding combined action to remain stable. The solid blind ditch made of dry-built rubbles is a rubble masonry without using cementing materials, and is kept stable under the action of external force by means of the weight of the rubbles and the friction force between the contact surfaces of the rubbles, and the maximum diameter of the rubbles is not more than 15 cm. The permeable geotextile is a permeable geosynthetic material formed by needling or weaving synthetic fibers, and has the advantages of high strength, corrosion resistance and good permeability.

The utility model provides a high embankment drainage french drain structure of filling out can be through the solid channel drainage that dry rubble stone constitutes, can effectively filter impurity through the geotechnological cloth that permeates water moreover to do not block up drainage channel, play better drainage effect, contrast prior art, the utility model discloses used material is gathered materials on the spot, and construction convenience, water permeability is good, can effectively get rid of the road bed ponding, keeps the stability of road bed.

Drawings

FIG. 1 is a schematic view of the arrangement of drainage blind ditches of the high fill embankment of the present invention;

fig. 2 is the sectional view of the drainage blind ditch of the high-fill embankment of the utility model.

In the figure, 1-mortar rubble layer, 2-solid blind ditch, 3-rubble layer, 4-coarse sand layer, 5-filling, 6-permeable geotextile, A-longitudinal drainage blind ditch, B-transverse drainage blind ditch.

Detailed Description

The present invention will be further described with reference to the following embodiments, which are intended to illustrate the principles of the present invention without limiting the present invention in any way, and the present invention is not beyond the scope of the present invention.

With reference to the attached drawings.

As shown in the figure, the high embankment drainage blind ditch that fills up, the drainage blind ditch is arranged in the embankment that is higher than basic ground, and the drainage blind ditch is the entity blind ditch by the building stones of multiple structure, and its solid cross section of constituteing is: the gravel layer comprises a grouted rubble layer 1 which is located on the bottom surface and built on embankment filling soil, a solid blind ditch 2 which is located at the center of the foundation of the grouted rubble layer 1 and is formed by dry rubbles, a gravel layer 3 which is filled and covered on the periphery of the solid blind ditch 2 formed by the dry rubbles, a permeable geotextile 6 which is coated on the periphery of the gravel layer 3, and a coarse sand layer 4 which is filled and filled on the periphery of the permeable geotextile 6.

The lower ends of two sides of the permeable geotextile 6 coated on the periphery of the gravel layer 3 extend into the foundation of the mortar rubble layer 1 and are fixed.

The grouted rubble layer 1 is formed by building rubbles and M7.5 cement mortar, and the maximum thickness of the rubbles is not more than 15 cm.

The dry masonry rubbles are directly built to form a drainage channel of the solid blind ditch 2, and the maximum thickness of the rubbles is not more than 15 cm.

The particle size of the broken stone forming the broken stone layer 3 is less than 2 cm.

The utility model discloses arrange and fill up the drainage french drain that embankment was filled out to height that is higher than basic ground includes longitudinal arrangement and transverse arrangement, and the drainage french drain by longitudinal arrangement and transverse arrangement communicates each other and constitutes netted drainage structures.

The construction process of the embodiment is as follows:

1. and (4) leveling the blind ditch foundation, and building a mortar rubble layer 1 on the foundation of the filling 5 to serve as the blind ditch foundation.

2. Paving dry rubbles with the width of 30cm and the height of 25cm in the middle of the grouted rubble layer 1 to serve as solid blind ditches 2, paving broken stones with the particle size of less than 2cm on two sides and the top surface of each dry rubble to form a rubble layer 3, and paving the rubble layer 3 with the width of 10 cm; the two sides and the periphery of the top surface of the gravel layer 3 are coated with permeable geotextile 6, coarse sand layers 4 with the thickness of 10cm are laid on the two sides and the periphery of the top surface of the permeable geotextile 6, and the peripheries of the coarse sand layers 4 are covered with filling 5;

3. the thickness of the top filling 5 is not less than 70 cm; and finishing the construction of the drainage blind ditch structure.

And finishing the construction of the drainage blind ditch structure of the high fill embankment.

Claims

1. The utility model provides a high embankment drainage blind ditch of filling up, drainage blind ditch arranges in the embankment that is higher than basic ground, its characterized in that: the drainage blind ditch is an entity blind ditch constructed by various building stones, and the cross section of the entity blind ditch comprises: the gravel layer is located on the bottom surface and built on embankment filling soil, the solid blind ditch is located in the center of the foundation of the gravel layer and formed by dry rubbles, the filled gravel layer covers the periphery of the solid blind ditch formed by the dry rubbles, the permeable geotextile covers the periphery of the gravel layer, and the coarse sand layer is filled on the periphery of the permeable geotextile.

2. The high fill embankment drainage french drain of claim 1, wherein: the lower ends of two sides of the permeable geotextile wrapped on the periphery of the gravel layer extend into the foundation of the mortar rubble layer to be fixed.

3. The high fill embankment drainage french drain of claim 1, wherein: the grouted rubble layer is a solid structure formed by masonry of rubbles and M7.5 cement mortar, and the maximum thickness of the rubbles is not more than 15 cm.

4. A highly filled embankment drainage blind according to claim 1 or 2 or 3, wherein: the solid blind ditch is a drainage channel and is formed by directly building rubbles, and the maximum thickness of the rubbles is not more than 15 cm.

5. The high fill embankment drainage french drain of claim 4, wherein: the particle size of the broken stone forming the broken stone layer is less than 2 cm.

6. The high fill embankment drainage french drain of claim 4, wherein: the drainage blind ditches arranged in the embankment higher than the foundation ground comprise longitudinally and transversely arranged drainage blind ditches, and the longitudinally and transversely arranged drainage blind ditches are communicated with each other to form a net drainage structure.