CN208201898U - One kind being used for highway excavation section subgrade drainage system - Google Patents

Abstract

The utility model discloses a kind of for highway excavation section subgrade drainage system, including longitudinal drainage ditch, blotter, drain hole and permeable bed course, ground subsoil layer divides into blotter, it is connected by drain hole with longitudinal drainage ditch, the lower infiltration of discharge, separate underground water, longitudinal drainage ditch divides into permeable bed course, bed course bottom is equipped with longitudinal drainpipe with holes, for by side slope Interstitial Water, roadbed internal water and underground water discharge, it is connected by organically penetrating through dark heat-extraction system with bright heat-extraction system, form smooth drainage channel, for the drainage requirement of different regions and different rainfalls, by adjusting the aperture of drainpipe, drain hole aperture and spacing, the size of longitudinal drainage ditch, its drain function has more flexibility and specific aim.Safely, quickly, efficiently highway excavation section water can be discharged for the utility model, extend Road Service Life, reduce road maintenance cost.

Description

One kind being used for highway excavation section subgrade drainage system

Technical field:

The utility model relates to subgrade drainage fields, more particularly to one kind to be used for highway excavation section section subgrade drainage system System.

Background technique:

The intracorporal water-bearing layer in former slope has been truncated in highway cutting excavation, leads to water-bearing layer exposure, roadbed level of ground water one As be in higher level, reduce bearing capacity.On the other hand, because excavation section supporting course intensity and foundation stability are generally higher, Usually cut subgrade is relatively trusted, to the also fairly simple of subgrade drainage consideration, dank material generally used, is arranged simultaneously French drain, sewer mode, to exclude that the water of roadbed may be penetrated into.Excavation section subgrade drainage is unsmooth, often will affect the intensity of roadbed And stability, in turn result in the deformation failure of road surface and side slope.The draining of highway excavation section is always to restrict subgrade and pavement Where the Adam's apple in service performance and service life.

The water of highway excavation section road structure mostlys come from two parts, and a part is that rainwater is directly drop to Road surface, lower to seep to inside roadbed, another part is mainly crevice water, inside Groundwater infiltration to roadbed.Currently, excavation section road Pumping equipment inside based structures, general dark using row, pumping equipment is enclosed in road structure layer state, is filling out the position for digging handover It sets, dark row is interrupted, and water is caused not to be discharged timely.Therefore, for excavation section subgrade drainage problem, seek a kind of unimpeded company Continuous, convenient construction, highly effective and safe excavation section drainage system is anticipated to improving the service performance on road surface, extending Road Service Life Justice is great.

Utility model content:

For the shortcomings in the field, the purpose of this utility model is to provide one kind to be used for highway excavation section section Subgrade drainage system.

Realize the technical solution of the utility model above-mentioned purpose are as follows:

One kind being used for highway excavation section subgrade drainage system, it is characterised in that: including blotter, longitudinal drainage Ditch, drain hole and permeable bed course, ground subsoil layer is arranged in for the blotter hereinafter, the longitudinal drainage ditch is located at soil On the outside of road shoulder, drain hole, the permeable bed course position is arranged in the bottom of the longitudinal drainage ditch and blotter connecting position In longitudinal drainage ditch hereinafter, the permeable bed course bottom is equipped with longitudinal drainage pipe, concrete base is set under the permeable bed course Plinth.

Anti-seepage geotextile is equipped between the concrete foundation and permeable bed course.

Anti-filter geotextiles are arranged in the permeable bed course two sides.

For the blotter with a thickness of 15~20cm, permeable bed course is blotter, and partial size is 1~5cm, longitudinal drainage Ditch is cover board ditch, and width is 90~100cm, and depth is 90~100cm.

The drain hole is UPVC drainpipe, and at 2~3m setting one, drain hole should have 30~35% gradients, Filling pipe end is wrapped up using anti-filter geotextiles, and aperture is 8~12cm.

The permeable bed course bottom and roadbed excavation section bottom of backbreaking flush, and dig binding site filling out and set with externally drained Apply it is connected, permeable bed course bottom longitudinal drainage pipe be UPVC with holes pipe, caliber be 20~25cm.

The advantageous effects of the utility model are:

1, the utility model one kind is used for highway excavation section drainage system, and blotter, permeable pad is arranged in inside The dark heat-extraction system of layer, outside setting longitudinal drainage ditch, by dark heat-extraction system with bright heat-extraction system is organic is connected, form the draining that one links up and lead to Effectively highway excavation section subgrade drainage is discharged for road.

2, the utility model one kind is used for highway excavation section drainage system, connects in blotter with longitudinal drainage ditch Position bottom is equipped with the drain hole of certain slope, and effectively blotter water can be discharged, the accumulation of blotter water is avoided to lead Cause pavement destruction.

3, the utility model one kind is used for highway excavation section drainage system, and permeable pad is equipped on the outside of section in roadbed counter dig Layer, the longitudinal drainpipe with holes of bed course bottom setting can separate cut slope Interstitial Water, and effectively discharge is instead dug under section roadbed Infiltration and underground water guarantee subgrade strength and stability.

4, the utility model one kind is used for highway excavation section drainage system, aperture, sluicing by adjusting drainpipe The size in hole aperture and spacing, longitudinal drainage ditch can satisfy the drainage requirement of different regions and different rainfalls, drain function Flexibility and specific aim can be had more.

Detailed description of the invention

Fig. 1 is the utility model for highway excavation section subgrade drainage system schematic；

Wherein: 1, ground subsoil layer；2, blotter；3, counter to dig roadbed；4, anti-seepage geotextile；5, UPVC draining with holes Pipe；6, drain hole；7, longitudinal drainage ditch；8, anti-filter geotextiles；9, permeable bed course 10, concrete foundation.

Specific embodiment

In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under The utility model is further described in face with specific embodiments and the drawings, but following embodiments are only the excellent of the utility model Embodiment is selected, and not all.Based on the implementation example in the implementation mode, those skilled in the art are not making creative work Under the premise of obtained other embodiments, belong to the protection scope of the utility model.

Specific embodiment of the utility model is described with reference to the accompanying drawing.

Embodiment: the as shown in Figure 1 embodiment excavation section subgrade drainage system include ground subsoil layer 1, blotter 2, It is anti-to dig roadbed 3, anti-seepage geotextile 4, UPVC drainpipe 5 with holes, drain hole 6, longitudinal drainage ditch 7, anti-filter geotextiles 8, permeable pad Layer 9 and concrete foundation 10；

One kind being used for highway excavation section subgrade drainage system, including blotter 2, longitudinal drainage ditch 7, drain hole 6 With permeable bed course 9, blotter is arranged in ground subsoil layer 1 hereinafter, longitudinal drainage ditch is located on the outside of earth shoulder, the longitudinal direction Drain hole is arranged in gutter and the bottom of blotter connecting position, and permeable bed course is located at longitudinal drainage ditch hereinafter, described is saturating Water subfill bottom is equipped with UPVC drainpipe 5 with holes, and concrete foundation 10, concrete foundation and permeable bed course is arranged under permeable bed course Between be equipped with anti-seepage geotextile 4, anti-filter geotextiles 8 are arranged in the filling pipe end of permeable bed course two sides and drain hole.

Ground subsoil layer 1 is low content cement stabilized gravel, and with a thickness of 20cm, underlayment 1 is lower to be arranged with a thickness of 18cm's Blotter 2, blotter are graded broken stone, and partial size is 0~3.5cm, are anti-digging roadbed 3 under granular cushion, and anti-digging is deep Degree is 30cm.

Longitudinal drainage ditch 7 is close to earth shoulder outside, and pattern is cover board ditch, and trench depth 95cm, ditch width is 95cm.

Drain hole 6 is arranged in blotter 2 and 7 connecting position bottom of longitudinal drainage ditch, and drain hole is UPVC drainpipe, caliber For 8cm, the gradient 35%, drain hole 6 is at 2.5m setting one.

The lower permeable bed course 9 of setting of longitudinal drainage ditch 7, the two sides of permeable bed course and drain hole 6 connect position with blotter 2 Anti-filter geotextiles 8 are set, to prevent drainage system from blocking.

The UPVC with holes that the longitudinal aperture of permeable 9 bottom of bed course setting is 20cm is managed, and concrete base is arranged under blotter Anti-seepage geotextile 4 is arranged in plinth 10 between permeable bed course 9 and concrete foundation 10.

In the position that roadbed excavation section is combined with embankment section, in due course is connected permeable bed course 9 with exterior drainage system, will The discharge of excavation section water.

After infiltration and underground water enter blotter 2 under road surface, cross flow to 6 position of drain hole enters vertical through drain hole To gutter 7, excluded by the guidance of longitudinal drainage ditch to outside roadbed.The Interstitial Water of side slope and the anti-water dug in roadbed, cross flow is extremely Permeable bed course 9, permeable bed course divides into longitudinal drainage pipe with holes, for collecting the water in permeable bed course, by permeable bed course and longitudinal direction Gutter is connected with the outer pumping equipment of excavation section, and finally water is expelled to outside excavation section.

Basic principles, main features, and advantages of the present invention has been shown and described above.Current row The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments Be only the utility model preference, be not intended to limit the utility model, do not departing from the spirit and scope of the utility model Under the premise of, the utility model also has various changes and improvements, these changes and improvements both fall within claimed it is practical In novel range.The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. one kind be used for highway excavation section subgrade drainage system, it is characterised in that: including blotter, longitudinal drainage ditch, Drain hole and permeable bed course, ground subsoil layer is arranged in for the blotter hereinafter, the longitudinal drainage ditch is located at dirt road On the outside of shoulder, drain hole is arranged in the bottom of the longitudinal drainage ditch and blotter connecting position, and the permeable bed course is located at Concrete foundation is arranged under the permeable bed course hereinafter, the permeable bed course bottom is equipped with longitudinal drainage pipe in longitudinal drainage ditch.

2. according to claim 1 a kind of for highway excavation section subgrade drainage system, it is characterised in that: described Anti-seepage geotextile is equipped between concrete foundation and permeable bed course.

3. according to claim 1 a kind of for highway excavation section subgrade drainage system, it is characterised in that: described Permeable bed course two sides be arranged anti-filter geotextiles.

4. according to claim 1 a kind of for highway excavation section subgrade drainage system, it is characterised in that: described Longitudinal drainage ditch is cover board ditch.

5. according to claim 1 a kind of for highway excavation section subgrade drainage system, it is characterised in that: described Drain hole be UPVC drainpipe, every 2~3m setting one at, drain hole have 30~35% gradients, filling pipe end use anti-filter Geotextiles package.

6. according to claim 1 a kind of for highway excavation section subgrade drainage system, it is characterised in that: described Permeable bed course bottom and roadbed excavation section bottom of backbreaking flush, dig binding site filling out and be connected with externally drained facility, it is permeable Longitudinal drainage pipe in bed course bottom is UPVC with holes pipe.