CN112696058A - Construction method of rain-proof and rain-collecting device for open excavation foundation pit of tunnel - Google Patents

Construction method of rain-proof and rain-collecting device for open excavation foundation pit of tunnel Download PDF

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Publication number
CN112696058A
CN112696058A CN202011632032.5A CN202011632032A CN112696058A CN 112696058 A CN112696058 A CN 112696058A CN 202011632032 A CN202011632032 A CN 202011632032A CN 112696058 A CN112696058 A CN 112696058A
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CN
China
Prior art keywords
foundation pit
waterproof cloth
rain
fixed end
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011632032.5A
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Chinese (zh)
Inventor
唐多福
张强
吕营
夏树芳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China MCC20 Group Corp Ltd
Shanghai Ershiye Construction Co Ltd
Original Assignee
China MCC20 Group Corp Ltd
Shanghai Ershiye Construction Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China MCC20 Group Corp Ltd, Shanghai Ershiye Construction Co Ltd filed Critical China MCC20 Group Corp Ltd
Priority to CN202011632032.5A priority Critical patent/CN112696058A/en
Publication of CN112696058A publication Critical patent/CN112696058A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H1/00Buildings or groups of buildings for dwelling or office purposes; General layout, e.g. modular co-ordination or staggered storeys
    • E04H1/12Small buildings or other erections for limited occupation, erected in the open air or arranged in buildings, e.g. kiosks, waiting shelters for bus stops or for filling stations, roofs for railway platforms, watchmen's huts or dressing cubicles
    • E04H1/1205Small buildings erected in the open air
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F3/00Sewer pipe-line systems
    • E03F3/02Arrangement of sewer pipe-lines or pipe-line systems
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F3/00Sewer pipe-line systems
    • E03F3/04Pipes or fittings specially adapted to sewers
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/10Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/14Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/22Adaptations of pumping plants for lifting sewage
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H15/00Tents or canopies, in general
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H15/00Tents or canopies, in general
    • E04H15/32Parts, components, construction details, accessories, interior equipment, specially adapted for tents, e.g. guy-line equipment, skirts, thresholds
    • E04H15/34Supporting means, e.g. frames

Abstract

The invention relates to the field of control of open-air water for foundations, in particular to a construction method of a rain-proof and rain-collecting device for a tunnel open-cut foundation pit. A construction method of a rain-proof and rain-collecting device for a tunnel open cut foundation pit is characterized in that a foundation pit (8) is dug on the ground, and a supporting pile, a crown beam (2), a trestle plate (3) and a transverse supporting beam (4) are arranged in the foundation pit (8): the device is characterized by further comprising a three-stage sedimentation tank, a drainage ditch (1), a filter water pump and a reservoir, a first fixed end (6) and a water collecting end (5), a second fixed end (9), a manufacturing waterproof cloth (7), an expansion waterproof cloth (7), a pre-buried drain pipe (11), rainwater collecting, rainwater storing and waterproof cloth (7) packing. The invention has good protection and high water resource utilization rate.

Description

Construction method of rain-proof and rain-collecting device for open excavation foundation pit of tunnel
Technical Field
The invention relates to the field of control of open-air water for foundations, in particular to a construction method of a rain-proof and rain-collecting device for a tunnel open-cut foundation pit.
Background
At present, most of tunnel open excavation foundation pits in China do not adopt rainproof measures. The basic method is to stop the foundation pit construction in rainy days, arrange a drainage ditch and a water collection pit in the foundation pit, and arrange a drainage pump in the water collection pit for centralized discharge, so that the influence of rainwater on the foundation pit is reduced. This method causes downtime in rainy days, which adversely affects the progress of construction.
Disclosure of Invention
The invention discloses a construction method of a rain-proof and rain-collecting device for a tunnel open cut foundation pit, aiming at overcoming the defects of the prior art and providing a foundation construction auxiliary method which is good in protection and improves the utilization rate of water resources.
The invention achieves the purpose by the following technical scheme:
a tunnel open cut foundation pit rain-proof and rain collecting device construction method is characterized in that a foundation pit is dug on the ground, and a support pile, a crown beam, a bridge deck and a transverse support beam are arranged in the foundation pit: the method is implemented in sequence according to the following steps:
the method comprises the following steps: a third-stage sedimentation tank is respectively arranged at an inlet and an outlet of a construction site at two ends of the foundation pit;
step two: drainage ditches are arranged on the outer sides of the trestle plates on the two sides of the foundation pit and connected with the three-stage sedimentation tank;
step three: a filtering water pump and a reservoir are arranged on one side of the third-stage sedimentation tank, and the volume of the reservoir is considered according to the water consumption of engineering;
step four: according to the number of the foundation pit skylights, a first fixed end and a water collecting end are arranged on the foundation pit trestle plate, and a second fixed end is arranged on the transverse supporting beam;
step five: manufacturing waterproof cloth according to the size of the transverse and longitudinal spacing of the first support of the foundation pit, wherein the waterproof cloth is made of a transparent pvc material, the waterproof cloth is cut according to the size of the foundation pit and is wound on a roller, the length of the roller is larger than the width of the waterproof cloth so as to be convenient to fold and mount, the number of the waterproof cloth is manufactured according to the number of the foundation pit skylights, and 4-5 waterproof cloth can be made for standby;
step six: in rainy days, one end of the waterproof cloth is fixedly connected with the first fixed end through a threaded pressing plate, two ends of the roller with the waterproof cloth wound are placed on the fixed ends of the cross beams on two sides of the foundation pit, the waterproof cloth is unfolded through the height difference between the first fixed end and the water collecting end, the other end of the waterproof cloth after being unfolded is fixedly connected with the water collecting end through the threaded pressing plate, and the waterproof cloth on the fixed end of the cross beam is fixed through a full-length magnetic strip;
step seven: an embedded drain pipe is arranged at each 5-10 m meter of the water collection end and connected with a drainage ditch, and is embedded in the trestle plate;
step eight: when raining, rainwater above the foundation pit is collected to the water collecting end through the waterproof cloth, water at the water collecting end flows into the drainage ditch through the pre-buried drainage pipe, and finally is collected in the third-stage sedimentation tank;
step nine: the settled rainwater is stored in a water storage tank through a water filtering pump for on-site use, such as a spraying system, concrete maintenance, vehicle cleaning, on-site cleaning and the like;
step ten: after the rainy day, the thread pressing plate of the waterproof cloth at the water collecting end is disassembled, the waterproof cloth is rolled up along the fixed end of the cross beam by using the winding drum, and finally the thread pressing plate of the waterproof cloth at the first fixed end is disassembled to pack up the waterproof cloth.
2. The method for constructing the rain-proof and rain-collecting device for the open trench foundation pit of the tunnel according to claim 1, wherein:
step four, the first fixed end is a first concrete retaining wall with the height of 500mm and the width of 200mm, angle steel with the thickness of 100mm multiplied by 100mm is pre-buried on the first concrete retaining wall, and threaded holes are formed in the positions, 540mm away from the ground, of the angle steel at intervals of 2 m; a water collection end is a second concrete retaining wall with the height of 100mm and the width of 200mm, channel steel with the thickness of 200mm is pre-buried in the second concrete retaining wall, and threaded holes are formed in the positions, 140mm away from the ground, of the inner side of the channel steel at intervals of 2 m; the second stiff end comprises vertical plate and baffle, vertical plate is right trapezoid, vertical plate uses the right angle waist to set up to one side down to one side, the laminating of baffle is fixed on vertical plate's the waist to one side, vertical plate's short base length of side 200mm links to each other with the end of catchmenting, vertical plate's long base length of side 600mm links to each other with first stiff end.
The invention can avoid the problem that the foundation pit soil body is soaked by rainwater, so that the construction can be normally carried out in rainy days, and the water resource can be reasonably utilized. The invention can effectively reduce the immersion of the foundation pit from rainwater, and is convenient for construction and operation.
The invention has the following beneficial effects:
1. the manufacture and installation are simple: the profile steel and the waterproof cloth can be purchased in the market, and the profile steel and the waterproof cloth are convenient to disassemble, transport and store and can be repeatedly used;
2. the operation is simple, the cost is low, and the rain-proof effect is good;
3. the problem of safe construction of open cut foundation pits in rainy days can be solved;
4. can effectively utilize the foundation pit to collect rainwater.
Drawings
Figure 1 is a schematic view from above of the present invention,
figure 2 is a schematic view of the front view direction of the present invention,
figure 3 is a schematic view of the present invention in which one end of the tarpaulin is fixed to the catchment end,
figure 4 is a schematic view of one end of the waterproof cloth of the present invention fixed on the first fixed end,
figure 5 is a schematic view of the structure of the second fixing end in the present invention,
fig. 6 is a rainwater collection flow chart of the present invention.
Detailed Description
The invention is further illustrated by the following specific examples.
Example 1
A construction method of a rain-proof and rain-collecting device for a tunnel open cut foundation pit is sequentially implemented according to the following steps as shown in the figure:
the method comprises the following steps: digging a foundation pit 8 on the ground, arranging a support pile, a crown beam 2, a trestle plate 3 and a transverse support beam 4 in the foundation pit 8, and arranging a three-stage sedimentation tank at the entrance and exit of the construction site at two ends of the foundation pit 8 respectively;
step two: a drainage ditch 1 is arranged on the outer side of the bridge girder 3 at two sides of the foundation pit 8, and the drainage ditch 1 is connected with a three-stage sedimentation tank;
step three: a filtering water pump and a reservoir are arranged on one side of the third-stage sedimentation tank, and the volume of the reservoir is considered according to the water consumption of engineering;
step four: according to the number of the skylights of the foundation pit 8, a first fixed end 6 and a water collecting end 5 are arranged on the bridge slab 3 of the foundation pit 8, a second fixed end 9 is arranged on the transverse supporting beam 4,
in this embodiment:
the water collecting end 5 is a second concrete retaining wall with the height of 100mm and the width of 200mm, channel steel with the thickness of 200mm is pre-buried in the second concrete retaining wall, and threaded holes are formed in the positions, 140mm away from the ground, of the inner side of the channel steel at intervals of 2 m;
the first fixed end 6 is a first concrete retaining wall with the height of 500mm and the width of 200mm, angle steel with the thickness of 100mm multiplied by 100mm is pre-buried on the first concrete retaining wall, and a threaded hole is arranged at the position, 540mm away from the ground, of the angle steel at an interval of 2 m;
the second fixed end 9 is composed of a vertical plate and a baffle plate, the vertical plate is in a right trapezoid shape, the vertical plate is arranged with a right-angled waist facing downwards and an inclined waist facing upwards, one side edge of the baffle plate is attached and fixed on the inclined waist of the vertical plate, the short bottom side length of the vertical plate is 200mm and is connected with the water collecting end 5, and the long bottom side length of the vertical plate is 600mm and is connected with the first fixed end 6;
step five: manufacturing the waterproof cloth 7 according to the size of the first supporting transverse and longitudinal intervals of the foundation pit 8, wherein the waterproof cloth 7 is made of a transparent pvc material, the waterproof cloth 7 is cut according to the size of the foundation pit 8 and is wound on a roller, the size of the waterproof cloth 7 is generally 16m multiplied by 8m, the length of the roller is larger than the width of the waterproof cloth 7 so as to be convenient to pack up and mount, the number of the waterproof cloth 7 is manufactured according to the number of skylights of the foundation pit 8, and 4-5 spare waterproof cloths can be manufactured;
step six: in rainy days, one end of the waterproof cloth 7 is fixedly connected with the first fixed end 6 through a threaded pressing plate 10, two ends of a roller with the waterproof cloth 7 wound are placed on the beam fixed end 9 on two sides of the foundation pit 8, the waterproof cloth 7 is unfolded by utilizing the height difference between the first fixed end 6 and the water collecting end 5, the other end of the waterproof cloth 7 after being unfolded is fixedly connected with the water collecting end 5 through the threaded pressing plate 10, and the waterproof cloth 7 on the beam fixed end 9 is fixed through a full-length magnetic strip;
step seven: the water collecting end 5 is provided with an embedded drain pipe 11 every 8m, is connected with the drainage ditch 1 and is embedded in the trestle plate 3;
step eight: when raining, rainwater above the foundation pit 8 is collected to the water collecting end 5 through the waterproof cloth 7, water at the water collecting end 5 flows into the drainage ditch 1 through the embedded drainage pipe 11, and is finally collected in the three-stage sedimentation tank;
step nine: the settled rainwater is stored in a water storage tank through a water filtering pump for on-site use, such as a spraying system, concrete maintenance, vehicle cleaning, on-site cleaning and the like;
step ten: after the rainy day, the thread pressing plate 10 of the waterproof cloth 7 at the water collecting end 5 is disassembled, the waterproof cloth 7 is rolled up along the beam fixed end 9 by using the winding drum, and finally the thread pressing plate 10 of the waterproof cloth 7 at the first fixed end 6 is removed, and the waterproof cloth 7 is folded.

Claims (2)

1. A construction method of a rain-proof and rain-collecting device for a tunnel open cut foundation pit is characterized in that a foundation pit (8) is dug on the ground, and a supporting pile, a crown beam (2), a trestle plate (3) and a transverse supporting beam (4) are arranged in the foundation pit (8): the method is implemented in sequence according to the following steps:
the method comprises the following steps: a third-stage sedimentation tank is respectively arranged at the inlet and the outlet of the construction site at the two ends of the foundation pit (8);
step two: drainage ditches (1) are arranged on the outer sides of the bridge decks (3) on the two sides of the foundation pit (8), and the drainage ditches (1) are connected with the three-stage sedimentation tank;
step three: a filtering water pump and a reservoir are arranged on one side of the third-stage sedimentation tank;
step four: according to the number of the skylights of the foundation pit (8), a first fixed end (6) and a water collecting end (5) are arranged on the bridge deck (3) of the foundation pit (8), and a second fixed end (9) is arranged on the transverse supporting beam (4);
step five: manufacturing the waterproof cloth (7) according to the size of the transverse and longitudinal spacing of the first support of the foundation pit (8), wherein the waterproof cloth (7) is made of a transparent pvc material, the waterproof cloth (7) is cut according to the size of the foundation pit (8) and is wound on a roller, and the length of the roller is greater than the width of the waterproof cloth (7);
step six: in rainy days, one end of the waterproof cloth (7) is fixedly connected with the first fixed end (6) through a threaded pressing plate (10), the two ends of the roller with the waterproof cloth (7) rolled are placed on the beam fixed ends (9) on the two sides of the foundation pit (8), the waterproof cloth (7) is unfolded through the height difference of the first fixed end (6) and the water collecting end (5), the other end of the waterproof cloth (7) after being unfolded is fixedly connected with the water collecting end (5) through the threaded pressing plate (10), and the waterproof cloth (7) on the beam fixed end (9) is fixed through a long magnetic strip;
step seven: the water collection end (5) is provided with an embedded drain pipe (11) every 5-10 m meters, is connected with the drain ditch (1), and is embedded in the bridge deck (3);
step eight: when raining, rainwater above the foundation pit (8) is collected to the water collecting end (5) through the rainproof cloth (7), water at the water collecting end (5) flows into the drainage ditch (1) through the embedded drainage pipe (11), and is finally collected in the three-stage sedimentation tank;
step nine: the settled rainwater is stored in a water storage tank through a water filtering pump for on-site use;
step ten: after the rainy day, the thread pressing plate (10) of the waterproof cloth (7) at the water collecting end (5) is disassembled, the waterproof cloth (7) is rolled up along the fixed end (9) of the cross beam by using the winding drum, and finally the thread pressing plate (10) of the waterproof cloth (7) at the first fixed end (6) is disassembled, and the waterproof cloth (7) is folded.
2. The method for constructing the rain-proof and rain-collecting device for the open trench foundation pit of the tunnel according to claim 1, wherein:
fourthly, the first fixed end (6) is a first concrete retaining wall with the height of 500mm and the width of 200mm, angle steel with the thickness of 100mm multiplied by 100mm is pre-buried on the first concrete retaining wall, and a threaded hole is arranged at the position, 540mm away from the ground, of the angle steel at intervals of 2 m; the water collecting end (5) is a second concrete retaining wall with the height of 100mm and the width of 200mm, channel steel with the thickness of 200mm is pre-buried in the second concrete retaining wall, and threaded holes are formed in the positions, 140mm away from the ground, of the inner side of the channel steel at intervals of 2 m; the second fixed end (9) is composed of a vertical plate and a baffle, the vertical plate is in a right trapezoid shape, the vertical plate is arranged upwards through a downward inclined waist of a right angle waist, one side edge of the baffle is attached and fixed on the inclined waist of the vertical plate, the short bottom side length of the vertical plate is 200mm and is connected with the water collecting end (5), and the long bottom side length of the vertical plate is 600mm and is connected with the first fixed end (6).
CN202011632032.5A 2020-12-31 2020-12-31 Construction method of rain-proof and rain-collecting device for open excavation foundation pit of tunnel Pending CN112696058A (en)

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Application Number Priority Date Filing Date Title
CN202011632032.5A CN112696058A (en) 2020-12-31 2020-12-31 Construction method of rain-proof and rain-collecting device for open excavation foundation pit of tunnel

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Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006022576A (en) * 2004-07-08 2006-01-26 Sekisui Chem Co Ltd Storm utilization system
JP2013167057A (en) * 2012-02-14 2013-08-29 Sekisui Plastics Co Ltd Rainwater disposal facility
CN203947484U (en) * 2014-06-04 2014-11-19 中国建筑第二工程局有限公司 A kind of drainage of foundation pit and circulating water utilization system
CN205475275U (en) * 2016-03-14 2016-08-17 中国建筑第八工程局有限公司 Landing stage face rainwater collection heat -extraction system
CN106049888A (en) * 2016-07-18 2016-10-26 中铁隧道集团二处有限公司 Rain-proof shed for construction in open cut pit
CN206801075U (en) * 2017-05-31 2017-12-26 中国二十冶集团有限公司 The rain and sun device of foundation ditch
CN109235911A (en) * 2018-09-04 2019-01-18 中国三冶集团有限公司 A kind of water-saving depositing dust construction method of construction site
CN208578132U (en) * 2018-06-21 2019-03-05 上海市园林工程有限公司 A kind of dirty abandoned stream filter arrangement of Rain Garden rainwater-collecting section
CN208578044U (en) * 2018-06-12 2019-03-05 河北中鸣建筑工程有限公司 A kind of building foundation pit with drain function
CN109989474A (en) * 2017-12-29 2019-07-09 江苏森洋环境建设集团有限公司 A kind of construction method of rain water collecting system
CN211395714U (en) * 2019-10-23 2020-09-01 金昆鹏 Novel building foundation pit drainage structure
CN212104144U (en) * 2020-05-08 2020-12-08 广东中科碧城环境技术有限公司 Soil digs protection water collecting structure of foundation ditch clearly

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006022576A (en) * 2004-07-08 2006-01-26 Sekisui Chem Co Ltd Storm utilization system
JP2013167057A (en) * 2012-02-14 2013-08-29 Sekisui Plastics Co Ltd Rainwater disposal facility
CN203947484U (en) * 2014-06-04 2014-11-19 中国建筑第二工程局有限公司 A kind of drainage of foundation pit and circulating water utilization system
CN205475275U (en) * 2016-03-14 2016-08-17 中国建筑第八工程局有限公司 Landing stage face rainwater collection heat -extraction system
CN106049888A (en) * 2016-07-18 2016-10-26 中铁隧道集团二处有限公司 Rain-proof shed for construction in open cut pit
CN206801075U (en) * 2017-05-31 2017-12-26 中国二十冶集团有限公司 The rain and sun device of foundation ditch
CN109989474A (en) * 2017-12-29 2019-07-09 江苏森洋环境建设集团有限公司 A kind of construction method of rain water collecting system
CN208578044U (en) * 2018-06-12 2019-03-05 河北中鸣建筑工程有限公司 A kind of building foundation pit with drain function
CN208578132U (en) * 2018-06-21 2019-03-05 上海市园林工程有限公司 A kind of dirty abandoned stream filter arrangement of Rain Garden rainwater-collecting section
CN109235911A (en) * 2018-09-04 2019-01-18 中国三冶集团有限公司 A kind of water-saving depositing dust construction method of construction site
CN211395714U (en) * 2019-10-23 2020-09-01 金昆鹏 Novel building foundation pit drainage structure
CN212104144U (en) * 2020-05-08 2020-12-08 广东中科碧城环境技术有限公司 Soil digs protection water collecting structure of foundation ditch clearly

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Application publication date: 20210423

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