CN204899978U - Shaft excavation to interface water layer drainage system - Google Patents

Shaft excavation to interface water layer drainage system Download PDF

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Publication number
CN204899978U
CN204899978U CN201520491934.XU CN201520491934U CN204899978U CN 204899978 U CN204899978 U CN 204899978U CN 201520491934 U CN201520491934 U CN 201520491934U CN 204899978 U CN204899978 U CN 204899978U
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China
Prior art keywords
header
water
drain header
shaft excavation
shaft
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Application number
CN201520491934.XU
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Chinese (zh)
Inventor
阚宝财
沈春盛
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Second Engineering Co Ltd of China Railway 12th Bureau Group Co Ltd
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Second Engineering Co Ltd of China Railway 12th Bureau Group Co Ltd
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Priority to CN201520491934.XU priority Critical patent/CN204899978U/en
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Publication of CN204899978U publication Critical patent/CN204899978U/en
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Abstract

The utility model relates to a construction drainage equipment specifically is a shaft excavation to interface water layer drainage system. The problem of drainage behind the water of shaft excavation to interface is solved, a shaft excavation to interface water layer drainage system, includes drain header, drainage tube and header tank, the drain header setting in the shaft and water collection tank connection, the drain header be the rectangle loop, has evenly laid a plurality of trompils on the drain header, it has welding steel pipe, the welding steel pipe last wired hose that is connected with, wired hose and drainage pipe connection to weld in the trompil. This drainage system can avoid water, and the contact produces mud sewage with soil, and fundamentally solves the blowdown problem among the shaft excavation process, improves workman's operation environment.

Description

Shaft excavation is to interfacial water layer sewerage system
Technical field
The utility model relates to a kind of construction drainage equipment, and specifically a kind of shaft excavation is to interfacial water layer sewerage system.
Background technology
Underground construction has water to be the problem that boring construction is abstained from most always, because excavation meets water conservancy project people, execution conditions are poor, and clothes is often wet, and health just can be very uncomfortable, and mood is deteriorated naturally, and progress does not increase yet simultaneously.
After shaft excavation to interfacial water, Normal practice is that portion arranges sump in the shaft, allow water nature flow in drainage tube in sump, drain pump in hole, by water pump pump drainage sump internal water accumulation, the drawback of this method is: be often immersed in water at the bottom of vertical shaft, and bearing capacity does not reach requirement; Down-hole civilized construction is poor; Grab soil and want frequent mobile water pump, labor intensive material resources; Catching the dregs come is sposh shape, need dry and could transport outward; Water pump cannot be separated with earth, and water pump is often blocked by earth, often changes pump maintenance; In water, easily there is electric shock accidents in water pump and workman, jeopardizes workman's life security.
Since excavation face is waterproof, so only needs the underground water pervious layer flows out to stop above, just can ensure anhydrous excavation.Stop underground water and have two schemes: one is slip casting; Another kind is drainage.In thin silt, during slip casting, slurries diffusion is uneven, and water plugging effect is bad; In sand-pebble layer, formation void is larger, and after dual slurry water blockoff, just a behind water level can rise, and above water blockoff position, drainage tube flows out, and does not reach water plugging effect.
Summary of the invention
The utility model arranges water problem after solving shaft excavation to interfacial water, provides a kind of shaft excavation to interfacial water layer sewerage system.
The utility model takes following technical scheme: a kind of shaft excavation is to interfacial water layer sewerage system, comprise drain header, drainage tube and header tank, described drain header to be arranged in vertical shaft and to be connected with header tank, drain header is rectangular loop, drain header is evenly laid with some perforates, perforate is welded with welded steel pipe, welded steel pipe is connected with wired hose, wired hose is connected with drainage tube.
Described drain header is arranged on below the minimum EXIT POINT of vertical shaft 20cm place.
The drain header of rectangle puts slope, the gradient 1% to an angle of rectangle, and header tank is laid in the below at the minimum angle place of vertical shaft internal drainage supervisor.
Described header tank is provided with floating-type automatic water pump.
The pipeline turning place of described drain header is by elbow and Flange joint.
Under minimum EXIT POINT, drain header is placed at 20cm place, and drainage tube is connected with drain header road one by one, and current are collected in header tank by main pipeline, discharges in the sedimentation basin arranged on water suction ground by floating-type automatic water pump.
Compared with prior art, the utility model has following beneficial effect:
economic benefit
Vertical shaft submersible and anhydrous operation effect reduce about 50%, 20 days used times are needed to 15.8m back cover according to original construction speed by absolute altitude 24.6m construction, to use when sharing after this drainage system 9 days, save 11 days durations, workman per capita salary 250 yuan, per tour 5 people, totally 2 classes, labour cost saves about 250*5*2*11=27500 unit altogether.
Conventionally construct, badly once every platform pump maintenance once about 800 yuan, add back cover and estimate construction 20 days, after using this drainage system, water pump was once not bad, and maintenance cost saves 10*800=8000 unit in average 2 days for water pump.
After applying this drainage system, artificial and pump maintenance two saves construction cost about 35500 yuan.
social benefit
After applying this drainage system; water in vertical shaft in suction sedimentation basin is clear water; the water entered in municipal storm sewer meets emission request (place is without blowdown interface), has made tremendous contribution to environmental protection, obtains the height accreditation of Kuai Gui company and draining group of Beijing.
application prospect
This drainage system can be avoided water and soil to contact and produce mud and sewage, fundamentally solves the blowdown problem in shaft excavation process, improves workman's operating environment.This drainage system is particularly useful for bedrock surface shaft excavation that is higher or excavation chance multilayer intermediary water and constructs.Along with increasing, the management of the project of city underground engineering are gradually improved, the standard of operating personnel's environment, environmental protection and civilized construction is more and more higher, and this drainage system application prospect is good.
Accompanying drawing explanation
Fig. 1 is the utility model plan view;
Fig. 2 is the utility model part sectioned view;
1-drain header in figure, 2-drainage tube, 3-header tank.
Detailed description of the invention
As shown in Figure 1, 2, a kind of shaft excavation is to interfacial water layer sewerage system, comprise drain header 1, drainage tube 2 and header tank 3, described drain header 1 to be arranged in vertical shaft and to be connected with header tank 3, drain header 1 is rectangular loop, drain header 1 is evenly laid with some perforates, perforate is welded with welded steel pipe, welded steel pipe is connected with wired hose, and wired hose is connected with drainage tube 2.
Described drain header 1 is arranged on below the minimum EXIT POINT of vertical shaft 20cm place.
The drain header 1 of rectangle puts slope, the gradient 1% to an angle of rectangle, and header tank 3 is laid in the below at the minimum angle place of vertical shaft internal drainage supervisor 1.
Described header tank 3 is provided with floating-type automatic water pump.
The pipeline turning place of described drain header 1 is by elbow and Flange joint.
The utility model is particularly applicable in the example in engineering:
Station, east gate, sweet members of a family station ~ Yuyuan Lake interval L1 temporary construction Shaft bank size 5m*7m marked by Beijing Metro No. 16 lines 17, well depth 33.96m.
Shaft excavation is Extra-fine sand to absolute altitude 26.6m stratum, and soil property is loose, and infiltration phenomenon appears in excavation face; Shaft excavation is sandy gravel to absolute altitude 25.1m stratum, and have severely-weathered cementing phenomenon, there is water northwest corner; Shaft excavation is conglomerate to absolute altitude 24.6m stratum, waterproof.Period vertical shaft northwest corner water level observation well water level elevation is basically stable at 24.9m, judge thus from absolute altitude 26.6m to 25.1m be interface, aquifer.
Shaft excavation is to below absolute altitude 25.1m, and excavation face not water outlet, but have open fire stream to flow out in drainage tube, workman under a stream of water face wears raincoat construction, and construction speed is slow, and mood is larger.
Be that the 24.9m position borehole wall lays Φ 108 steel pipe as main drainpipe at vertical shaft absolute altitude, main drainpipe is sized to 5m*7m rectangular loop according to vertical shaft, the every internode of pipeline is by elbow and Flange joint, spacing 0.5m perforate welding Φ 42mm welded steel pipe (Φ 42mm welded steel pipe along length of tube direction point-blank) on main drainpipe, be connected on drainage tube by Φ 50mm wired hose one end, the other end is connected on the welded steel pipe of Φ 42, by drainage in-pipe flow order access Φ 108 main drainpipe.When main drainage pipeline is laid, Beijiao puts slope eastwards, the gradient 1%, below vertical shaft northeast corner landing, lay header tank, and the on-the-spot water glass bucket of diameter 0.57m height 0.9m that adopts is as header tank.
Main pipeline is laid WQ10-65-3.0 type water pump, pump switch case is made floating-type automatic control type controller simultaneously after laying and having connected in header tank, is drained by water pump drainage by floating-type automatically controlled water pump to the sedimentation basin arranged on the ground.

Claims (5)

1. a shaft excavation is to interfacial water layer sewerage system, it is characterized in that: comprise drain header (1), drainage tube (2) and header tank (3), described drain header (1) to be arranged in vertical shaft and to be connected with header tank (3), drain header (1) is rectangular loop, (1) is evenly laid with some perforates to drain header, perforate is welded with welded steel pipe, welded steel pipe is connected with wired hose, wired hose is connected with drainage tube (2).
2. shaft excavation according to claim 1 is to interfacial water layer sewerage system, it is characterized in that: described drain header (1) is arranged on below the minimum EXIT POINT of vertical shaft 20cm place.
3. shaft excavation according to claim 2 is to interfacial water layer sewerage system, it is characterized in that: the drain header (1) of rectangle puts slope, the gradient 1% to an angle of rectangle, and header tank (3) is laid in the below at the minimum angle place of vertical shaft internal drainage supervisor (1).
4. shaft excavation according to claim 3 is to interfacial water layer sewerage system, it is characterized in that: described header tank (3) is provided with floating-type automatic water pump.
5. shaft excavation according to claim 4 is to interfacial water layer sewerage system, it is characterized in that: the pipeline turning place of described drain header (1) is by elbow and Flange joint.
CN201520491934.XU 2015-07-09 2015-07-09 Shaft excavation to interface water layer drainage system Active CN204899978U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520491934.XU CN204899978U (en) 2015-07-09 2015-07-09 Shaft excavation to interface water layer drainage system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520491934.XU CN204899978U (en) 2015-07-09 2015-07-09 Shaft excavation to interface water layer drainage system

Publications (1)

Publication Number Publication Date
CN204899978U true CN204899978U (en) 2015-12-23

Family

ID=54922164

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520491934.XU Active CN204899978U (en) 2015-07-09 2015-07-09 Shaft excavation to interface water layer drainage system

Country Status (1)

Country Link
CN (1) CN204899978U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI708011B (en) * 2019-03-12 2020-10-21 鈺尚營造股份有限公司 Sinking device for construction shaft
US10988907B1 (en) 2020-08-26 2021-04-27 Ician Engineering Contractors Co., Ltd. Sinking apparatus for sinking concrete shaft

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI708011B (en) * 2019-03-12 2020-10-21 鈺尚營造股份有限公司 Sinking device for construction shaft
US10988907B1 (en) 2020-08-26 2021-04-27 Ician Engineering Contractors Co., Ltd. Sinking apparatus for sinking concrete shaft

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