CN212153647U - Drainage facility suitable for water source area protection district excavation highway section - Google Patents

Abstract

The utility model relates to a water source ground protection area excavation road section has the drainage side ditch of separately collecting road surface water and road bed side slope water function, more specifically is a drainage facility suitable for water source ground protection area excavation road section, and simple process, construction convenience, the utility model can prevent other rainwater from converging into the water collecting ditch, reduce the water storage pressure of evaporation pond and sedimentation tank; in addition, sundries such as sand, branches and the like can be prevented from blocking the water collecting channel, smooth water drainage is ensured, the cost of regular cleaning is reduced, and the cost is saved. The edge of a roadbed of an excavation road section of a water source area protection area is provided with a concrete guardrail, the bottom of the concrete guardrail is provided with a transverse drain pipe, and the upper part of a roadbed base layer is provided with a pavement structure drain pipe; the consistent-size water collecting channel and cutting side channel are laid side by side on the outer side of the roadbed, a concrete prefabricated cover plate is arranged on the upper portion of the water collecting channel, and a transverse drain pipe and a pavement structure drain pipe are connected into the water collecting channel.

Description

Drainage facility suitable for water source area protection district excavation highway section

Technical Field

The utility model relates to a water source ground protection zone excavation highway section has the drainage side ditch that separately collects road surface water and road bed side slope water function, more specifically the drainage facility suitable for water source ground protection zone excavation highway section that says so.

Background

In the process of road construction, the project line position inevitably passes through the secondary protection area of the drinking water source area. In the relevant regulations, when a road passes through a water source area for reference, base water and initial rainwater on the road surface need to be separately discharged, and road surface runoff water needs to be treated by a sedimentation basin and the like and then is discharged outside the water source area. Therefore, the structural design of the highway drainage side ditch of the road section of the water source area protection area is necessary.

The existing excavation road sections of the water source area protection area mostly adopt water collecting ditches without cover plates, and although the construction cost is relatively low and the construction is simple, sundries such as sandy soil, branches and the like are easy to deposit, so that the drainage efficiency is influenced; in addition, if other rainwater flows into the water collecting ditch, the water storage pressure of the sedimentation tank and the evaporation tank is increased. In order to ensure separate discharge of roadbed water and initial pavement water and avoid pollution of water source, higher requirements are required for a drainage system, and a drainage side ditch is also required.

SUMMERY OF THE UTILITY MODEL

The utility model mainly solves the technical problem of providing a drainage facility suitable for a water source ground protection area excavation road section, which has simple process and convenient construction, and can prevent other rainwater from converging into a water collecting ditch and reduce the water storage pressure of an evaporation tank and a sedimentation tank; in addition, sundries such as sand, branches and the like can be prevented from blocking the water collecting channel, smooth water drainage is ensured, the cost of regular cleaning is reduced, and the cost is saved; finally, the utility model discloses can prevent the damage of catch basin and escape canal partition wall, guarantee that road surface water and road bed water normally separately discharge, make the drinking water not polluted. The edge of a water source ground protection area excavation road section is provided with a concrete guardrail, a transverse drain pipe is laid under the concrete guardrail, the gradient is consistent with the gradient of a road surface, a road surface structure drain pipe is buried in the upper portion of a roadbed base layer, a water collecting ditch and a side ditch which are consistent in size are arranged side by side on the outer side of the concrete guardrail, the water collecting ditch and the side ditch are formed by assembling concrete precast blocks, a concrete precast cover plate is additionally arranged on the water collecting ditch, the transverse drain pipe and the road surface structure drain pipe are connected into the water collecting ditch, and a layer of composite geomembrane is laid outside the concrete precast.

The utility model relates to a drainage facility suitable for water source ground protected area excavation highway section's beneficial effect does:

the utility model has simple process and convenient construction, can prevent other rainwater from gathering into the water collecting ditch, and reduces the water storage pressure of the evaporation tank and the sedimentation tank; in addition, sundries such as sand, branches and the like can be prevented from blocking the water collecting channel, smooth water drainage is ensured, the cost of regular cleaning is reduced, and the cost is saved; finally, the utility model discloses can prevent the damage of catch basin and escape canal partition wall, guarantee that road surface water and road bed water normally separately discharge, make the drinking water not polluted.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic cross-sectional view of a drainage facility at a bi-directional excavation section;

fig. 2 is a schematic view of a drainage facility.

In the figure: a transverse drain pipe 1; a pavement structure drain pipe 2; prefabricating a cover plate 3 by concrete; a water collecting ditch 4; a side ditch 5; a concrete guardrail 6; a partition 7; a concrete precast block 8; and (4) a composite geomembrane 9.

Detailed Description

The embodiment is described below with reference to fig. 1 and 2, and the utility model relates to a drainage side ditch with function of separately collecting road surface water and roadbed side slope water in a water source ground protection area excavation section, in particular to a drainage facility suitable for the water source ground protection area excavation section, which comprises a transverse drainage pipe 1, a road surface structure drainage pipe 2, a concrete prefabricated cover plate 3, a water collection ditch 4, a side ditch 5, a concrete guardrail 6, a clapboard 7, a concrete prefabricated block 8 and a composite geomembrane 9, and has simple process and convenient construction; in addition, sundries such as sand, branches and the like can be prevented from blocking the water collecting channel, smooth water drainage is ensured, the cost of regular cleaning is reduced, and the cost is saved; finally, the utility model discloses can prevent the damage of catch basin and escape canal partition wall, guarantee that road surface water and road bed water normally separately discharge, make the drinking water not polluted.

The edge of the excavation road section of the water source ground protection area is provided with a concrete guardrail 6, a transverse drain pipe 1 is laid under the concrete guardrail 6, the gradient is consistent with the road surface gradient, a road surface structure water drain pipe 2 is buried in the upper portion of a roadbed base layer, a water collecting ditch 4 and a side ditch 5 are laid in the outer side of the concrete guardrail 6 side by side, the water collecting ditch 4 and the side ditch 5 are assembled by concrete precast blocks 8 to form, a concrete precast cover plate 3 is additionally arranged on the water collecting ditch 4, the transverse drain pipe 1 and the road surface structure water drain pipe 2 are connected into the water collecting ditch, and a layer of composite geomembrane 9 is laid outside the concrete. The construction steps are as follows: 1, cleaning a field: cleaning the original residual soil, surface soil, sundries and the like; 2, excavating a foundation pit: adopting manual work cooperation machinery to excavate, digging out the soil material and transporting to the appointed place promptly, dig to high-rise design elevation 0.1m time and change into manual work clearance, renovate according to the design bottom surface cross slope, prevent disturbance bottom soil slope. 3, assembling concrete precast blocks: lay a compound geomembrane of one deck and a cloth membrane before C20 prefabricated section is assembled and prevent to leak, the prefabricated section is established a shrinkage joint every 10m, and the seam width is 2cm, and the expansion joint adopts asphalt mortar pitch: cement: filling and compacting the sand in a ratio of 1:1: 4; after the installation is finished, the linear straightness and smoothness of the side ditches must be guaranteed, and the adjustment is required to be carried out in time when the local part is not in accordance with the requirements.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or replacements made by those skilled in the art within the scope of the present invention also belong to the protection scope of the present invention.

Claims (1)

1. The utility model provides a drainage facility suitable for water source ground protected area excavation highway section, includes horizontal drain pipe (1), road surface structure wash-out pipe (2), precast concrete apron (3), catch basin (4), side ditch (5), concrete guardrail (6), baffle (7), precast concrete piece (8), compound geomembrane (9), its characterized in that: water source ground protection zone excavation highway section edge sets up concrete guardrail (6), lay horizontal drain pipe (1) under concrete guardrail (6), the slope keeps unanimous with the road surface slope, road bed basic unit upper portion buries road surface structure outlet pipe (2) underground, lay the unanimous catch basin of size (4) and side ditch (5) side by side in concrete guardrail (6) outside, catch basin (4) and side ditch (5) are assembled by concrete prefabricated piece (8) and form, add on catch basin (4) and establish concrete prefabricated apron (3), horizontal drain pipe (1) and road surface structure outlet pipe (2) insert catch basin (4), concrete prefabricated piece (8) outer one deck compound geomembrane (9) of spreading.

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