CN217079047U - Drainage system for subway cable gallery - Google Patents

Abstract

The utility model provides a drainage system for subway cable corridor to effectively avoid sump pit outlet pipe and the high-pressure cable position conflict that subway cable corridor support upper and lower later stage laid, and improve drainage efficiency. Including the sump pit that sets up escape canal and interval along subway cable corridor full length, the outside wall of sump pit expands for subway cable corridor standard section side wall is transversely outward, and the sump pit is arranged in the outside of subway cable corridor standard section side wall, and the sump pit installation drain pump, the outer side wall along the sump pit of outlet pipe connected with the drain pump upwards extends subway cable corridor to go into municipal administration rainwater system.

Description

Drainage system for subway cable gallery

Technical Field

The utility model relates to a subway cable corridor drainage system, in particular to a drainage system for subway cable corridor.

Background

The reasons for the water accumulation of the subway cable gallery mainly include washing water of the subway cable gallery, water leakage at structural joints and water leakage at tunnel openings. The current subway cable corridor sump pit directly sets up below subway cable corridor bottom plate, and the sump pit outlet pipe conflicts with the high-pressure cable position that the later stage laid on the subway cable corridor support, unfavorable cable laying construction.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a high-pressure cable position conflict that later stage laid is provided for subway cable corridor to effectively avoid sump pit outlet pipe and subway cable corridor support, and improve drainage efficiency.

The utility model provides a technical scheme that its technical problem adopted as follows:

the utility model discloses a drainage system for subway cable corridor, include the sump pit that sets up escape canal and interval along subway cable corridor full length, characterized by: the outer side wall of sump pit expands for subway cable corridor standard section side wall is horizontal outward, and the sump pit is arranged in the outside of subway cable corridor standard section side wall, and the sump pit installation drain pump, the outer side wall that goes out the water pipe and be connected with the drain pump along the sump pit upwards extends subway cable corridor to access municipal administration rainwater system.

The utility model has the advantages that the water collecting pit of the subway cable gallery is arranged outside the side wall of the standard section of the subway cable gallery by adopting a form of transversely enlarging the section, so that the conflict problem between the water outlet pipe of the water collecting pit and the position of the high-voltage cable laid on the upper later stage of the subway cable gallery support is effectively avoided; the drainage efficiency is high, the structure is simple, the construction is convenient, and the popularization and the use are easy.

Drawings

The specification includes the following four figures:

fig. 1 is a cross-sectional view of a drainage system for a subway cable corridor of the present invention;

fig. 2 is a plan view of a drainage system for a subway cable corridor of the present invention;

fig. 3 is a longitudinal section of a drainage system for a subway cable corridor of the present invention;

FIG. 4 is a structural outline drawing of a glass fiber reinforced plastic grid cover plate in a drainage system for a subway cable corridor

The figures show the components and corresponding references: the method comprises the following steps of laying a high-voltage cable 11, a C20 plain concrete cushion layer 12, a water collection pit 20, an outer side wall 21, a glass fiber reinforced plastic grid cover 22, a drainage pump 23 and a water outlet pipe 24 on a side wall 10 of a standard section of the subway cable gallery in a later period.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Referring to fig. 1, 2 and 3, the utility model discloses a drainage system for subway cable corridor, include along subway cable corridor total length set up escape canal and interval sump pit 20 that sets up. The outer side wall 21 of sump pit 20 expands for subway cable corridor standard section side wall 10 is horizontal outward, and sump pit 20 arranges in the subway cable corridor standard section side wall 10 outside, effectively avoids the high-pressure cable position conflict problem that sump pit outlet pipe and subway cable corridor support upper and lower later stage laid. A drainage pump 23 is arranged in the water collection pit 20, and a water outlet pipe 24 connected with the drainage pump 23 extends upwards out of the subway cable gallery along the outer side wall 21 of the water collection pit 20 and is connected into a municipal rainwater system.

Referring to fig. 1, 2 and 3, in order to effectively improve the drainage efficiency, the cross section terrace of the subway cable gallery slopes to the drainage ditch with a gradient of 1%, the longitudinal gradient of the drainage ditch is consistent with the longitudinal gradient of the power channel, but not less than 2%, and the longitudinal gradient of the drainage ditch slopes to the sump 20. The number of the drainage pumps 23 is two, and the drainage pumps are connected with the water outlet pipe 24 in parallel and controlled by a float switch arranged in the liquid collecting pit 20. The high water level automatic pump starting and the low water level pump stopping are realized, one is used and the other is prepared in normal use, and the two drainage pumps 23 are used simultaneously in ultrahigh liquid level.

Referring to fig. 1 and 4, C20 plain concrete cushion layer 12 is laid on the cross section of the subway cable corridor from the terrace to the end of the sump 20, and a glass fiber reinforced plastic grid cover 22 is arranged at the end of the sump 20.

The above is merely illustrative of some of the principles of the present invention, rather than limiting the present invention to the specific structure and application range shown and described, all the corresponding modifications and equivalents that may be utilized are considered to fall within the scope of the present invention.

Claims (4)

1. The utility model provides a drainage system for subway cable corridor, includes along subway cable corridor full length sets up escape canal and interval sump pit (20) that set up, characterized by: the outer side wall (21) of sump pit (20) is for the horizontal flaring of subway cable corridor standard section side wall (10), and sump pit (20) arrange in subway cable corridor standard section side wall (10) outside, and sump pit (20) installation drain pump (23), and outlet pipe (24) that are connected with drain pump (23) upwards extend subway cable corridor along outer side wall (21) of sump pit (20) to access city political affairs rainwater system.

2. The drainage system for a subway cable corridor as claimed in claim 1, wherein: the cross section terrace of the subway cable corridor slopes to the drainage ditch with a gradient of 1%, the longitudinal gradient of the drainage ditch is not less than 2 per thousand, and the longitudinal gradient of the drainage ditch slopes to the sump (20).

3. The drainage system for a subway cable corridor as claimed in claim 1, wherein: the number of the drainage pumps (23) is two, the drainage pumps are connected with the water outlet pipe (24) in parallel and controlled by a floating ball switch arranged at the position of the liquid collecting pit (20).

4. The drainage system for a subway cable corridor as claimed in claim 1, wherein: c20 plain concrete cushion layer (12) is laid from the cross section terrace of the subway cable corridor to the port of the water collection pit (20), and a glass fiber reinforced plastic grid cover (22) is arranged at the port of the water collection pit (20).

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