CN106988345A - A kind of excavation method of reverse construction foundation ditch - Google Patents
A kind of excavation method of reverse construction foundation ditch Download PDFInfo
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- CN106988345A CN106988345A CN201710212962.7A CN201710212962A CN106988345A CN 106988345 A CN106988345 A CN 106988345A CN 201710212962 A CN201710212962 A CN 201710212962A CN 106988345 A CN106988345 A CN 106988345A
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- excavation
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- foundation ditch
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
- E02D29/05—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
- E02D29/05—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
- E02D29/055—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench further excavation of the cross-section proceeding underneath an already installed part of the structure, e.g. the roof of a tunnel
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The present invention proposes a kind of excavation method of reverse construction foundation ditch, it is combined and is constructed using mechanical equivalent of light excavation and hydraulic excavation in reverse construction foundation ditch, mechanical equivalent of light excavation is used when facilitating mechanical equivalent of light excavation, by in limited time then using hydraulicking, giant washes away soil body formation mud, and mud flow to correspondence mud pit, and mud transports mud conditioning area by discharge pipeline, pouring for room floor is simultaneously descended, realizes that above and below ground is constructed simultaneously.The present invention effectively improves earth excavation efficiency, and is not restricted by traffic control, and the shortening duration reduces cost, and energy-conserving and environment-protective.
Description
Technical field
The invention belongs to the technical field of earthwork engineering of foundation pit construction, more particularly to a kind of excavation of reverse construction foundation ditch
Method.
Background technology
As urban underground space continually develops utilization, the scale of foundation ditch is increasing, reverse construction economic benefit,
Social benefit, environmental benefit have the advantages that prominent：1) construction and underground infrastructures construction of building superstructure can be made
Parallel stereo operation, it is big and when level is more up and down in construction scope, it can about save man-hour 1/3；2) roof and floor formation earth-retaining knot
Structure, deformation displacement is small, reasonable stress, thus the influence to adjacent building is small；3) construction can be lacked by weather, and earth excavation
Can be less or total lever factor not be accounted for substantially；4) basement roof plane can be used as workbench, it is not necessary to set up excavation work in addition and put down
Platform and inner support, so significantly reduce the temporary projects such as support and workbench, reduce operating expenses.But inverse work
Often because foundation ditch compared with having the big problem of earth excavation difficulty of construction deeply in method construction；Digging narrow space, is unfavorable for simultaneously
Extensive mechanized construction, some big machinery construction operation spaces are restricted, and earthwork vertical transport uses existing equipment
Construction is slow, and or need to build temporary project assistant conveyance, very big influence is brought to engineering construction, while urban transportation control
It will also result in earthwork transportation the limited time.Disadvantages described above can all cause claim for eot and economic loss；Earthwork transportation can band simultaneously
The problems such as coming big city raised dust, job site bad environments.
The content of the invention
The technical problems to be solved by the invention are that there is provided a kind of reverse construction foundation ditch for above-mentioned problem
Excavation method, contrary sequence method area cubic metre of earth using based on hydraulicking, the construction method supplemented by mechanical equivalent of light excavation, reduce the engineering time and
Expense, improves operating efficiency.
The present invention solves the technical scheme that is used of above-mentioned technical problem：A kind of excavation side of reverse construction foundation ditch
Method, it is characterised in that comprise the following steps：
1) setting of foundation pit enclosure structure, diaphragm wall is set in foundation ditch surrounding, is divided according to foundation ditch top building
Area, it is determined that suitable make area and against area is made, determines to excavate thickness, and make area's base inverse according to the earth volume of excavation of foundation pit and digging mode
The internal interval in hole pours or laid intermediate sup-poning pile or post；
2) top workbench is poured, top layer uses mechanical equivalent of light excavation, waits to dig to the absolute altitude after-pouring of B1 bottom plate
Next layer of top plate, top plate is forming opening along the position for making area and reserved elevator, and top plate can be put down as the work of excavation of foundation pit
Platform；
3) set hydraulicking device, water tank is set on top plate, tank top set water pump, by intake pipe with
Water source is connected, and bottom sets several jet water pumps, is connected by jet water spout with hydraulic giant, and jet water spout makees area and reserved elevator by suitable
Opening enter foundation ditch；
4) mud feeding device is set, mud pit is formed by mechanical equivalent of light excavation in mechanical work blind area and regional center (RC) position,
Be provided with slush pump in mud pit, mud is transported to mud conditioning area by slush pump by discharge pipeline, discharge pipeline by along make area and
The opening of reserved elevator is laid to foundation ditch；
5) inverse to make area's basement concrete floor slab placement, Xian Duishunzuo areas are excavated, and are then carried out the inverse excavation for making area, are facilitated machine
Tool excavate when use mechanical equivalent of light excavation, mechanical equivalent of light excavation by limited time then use hydraulicking, to it is inverse make area carry out hydraulicking when, can
Along along the several punching digging points of area periphery arrangement are made, High-Pressure Water is sprayed by hydraulic giant and washes away the soil body, mud is formed and flow to mud pit, treat
When being excavated to the floor level of two layers of underground, the bottom plate of B1 is poured, the bottom plate of B1 is along the position shape for making area
Into opening, continue after the earthwork to the floor level of excavation F3/B3 downwards, pour the bottom plate of two layers of underground, the bottom that two layers of underground
The position in Ban Shunzuo areas forms opening, repeats to excavate until the position away from foundation ditch substrate certain altitude, pours subsurface formation
Top plate, the top plate of subsurface formation is forming opening along the position for making area；
6) the clear bottom of foundation ditch, is excavated to behind the position away from foundation ditch substrate certain altitude, using the clear bottom of human assistance mini-plant,
Promoted from the inverse area that makees to the suitable area that makees at once clear bottom to foundation ditch substrate absolute altitude, the earthwork at clear bottom is high using muck haulage heap, the high 1m of heap~
2m scopes carried out after sluicing transport, the rubble that finally removes rubbish the bottom slab concreting of subsurface formation；
7) along making area's basement concrete floor slab placement, poured along each floor top plate formwork of area's basement is made, finally carry out it is inverse make area with
Handled along corresponding connection of area's basement with each floor top plate at absolute altitude is made.
By such scheme, the step 1) middle thickness of excavating is 1.4m~1.6m, the height of each teams and groups' excavated surface
Difference is less than or equal to 80cm.
By such scheme, the step 4) in mud pit bottom absolute altitude less than excavating soil layer top surface absolute altitude 0.5m~1m.
By such scheme, the step 4) in mud in mud conditioning area precipitation process, rear mud upper strata clear water to be precipitated
Recycle, bottom mud is transported to spoir point.
By such scheme, the step 5) in certain altitude be 180mm~200mm.
By such scheme, the step 5) in the top of each layer of basement, bottom plate transfer water can be set as workbench
Case and middle dump mud box, are connected by transfer water pump and transfer slush pump with jet water spout and discharge pipeline respectively.
The beneficial effects of the invention are as follows：1st, a kind of excavation method of reverse construction foundation ditch is provided, pipeline sets flexible, can
So that mud outlet is arranged on into traffic control exterior domain, the convenient other constructions in scene, while stopping of bringing of solution traffic control
Work problem；2nd, solve reverse construction narrow space and cause the problem of mechanical equivalent of light excavation difficulty is big；3rd, use discharge pipeline transport can be with
Avoid because foundation ditch is too deep and caused by earthwork vertical transport difficulty it is big the problem of；4th, this method is direct using underground ceiling, bottom plate
It is used as workbench and horizontal support, it is not necessary to set up excavate workbench and support in addition, reduce operating expenses, economy
And shorten the duration；5th, the earthwork can use less open channels, form two independences above and below basement roof by hydrotransport
Construction space, be effectively shortened the construction period, can about reduce work hours 1/3；6th, construction method of the present invention can be carried effectively
High pit earthwork excavates efficiency, reduces earth excavation scene, surrounding enviroment airborne dust and construction noise, energy-conserving and environment-protective；7th, pipeline
It can be laid at the basement floor opening Huo Shunzuo areas such as reserved elevator opening, post-cast strip opening, be not used in contrary sequence method area and respectively push up
The mouth that fetches earth is opened up in bottom plate, it is to avoid the patch work of later stage roof and floor mouthful.
Brief description of the drawings
Fig. 1 is the subregion schematic diagram of one embodiment of the invention.
Fig. 2 is the earth excavation schematic diagram of one embodiment of the invention.
Fig. 3 is the clear bottom schematic diagram of foundation ditch of one embodiment of the invention.
Wherein：1. against differentiation area one is made, 2. inverse work differentiation areas two, 3. inverse works distinguish areas three, and 4. suitable works distinguish area one, 5. bases
Hole, 6. B1 top plates, 7. water tanks, 8. jet water spouts, 9. hydraulic giants, 10. discharge pipelines, 11. substrate absolute altitudes, 12. mud pits.
Embodiment
To more fully understand the present invention, with reference to the accompanying drawings and examples to further description of the present invention.
The characteristics of playing hydraulicking technology, the earth excavation existed when solving deep-foundation pit engineering using reverse construction
The problems such as transport difficulty is big, efficiency is low, Superstructure Construction is influenceed by excavation of foundation pit, foundation pit construction is influenceed by weather.
A kind of excavation method of reverse construction foundation ditch, including following content：
1) setting of foundation pit enclosure structure, diaphragm wall is set in the surrounding of foundation ditch 5, is carried out according to foundation ditch top building
Subregion, it is determined that suitable make area and against area is made, as shown in figure 1, construction foundation pit is divided into：It is inverse make to distinguish area 1, it is inverse make to distinguish area 22,
It is inverse to make to distinguish area 33 and along making to distinguish area 1, determine to excavate thickness, thickness according to the earth volume of excavation of foundation pit and digging mode
For 1.4m~1.6m, same subregion can multiple teams and groups construct in turn or simultaneously, the difference in height of each teams and groups' excavated surface is less than
Or intermediate sup-poning pile or post are poured or lay equal to 80cm, and at inverse interval of making inside area's foundation ditch, as construction period in bottom plate
Superstructure deadweight and the support of construction loads are born before back cover；
2) top workbench is poured, top layer uses mechanical equivalent of light excavation, waits to dig to the absolute altitude after-pouring of B1 bottom plate
Next layer of top plate 6, top plate is forming opening along the position for making area and reserved elevator, and top plate can be put down as the work of excavation of foundation pit
Platform；
3) hydraulicking device is set, water tank 7 is set on top plate, water pump is set in tank top, passes through intake pipe
It is connected with water source, bottom sets several jet water pumps, is connected by jet water spout 8 with hydraulic giant 9, jet water spout makees area and reserved by suitable
The opening of elevator enters foundation ditch, while considering that peak period water distribution quantity is more than average value and device damage is repaired, should set up jet water spout；
4) mud feeding device is set, mud pit is formed by mechanical equivalent of light excavation in mechanical work blind area and regional center (RC) position
12, mud pit bottom absolute altitude is less than excavating provided with slush pump in soil layer top surface absolute altitude 0.5m~1m, mud pit, and slush pump passes through spoil disposal
Mud is transported to mud conditioning area by pipe 10, and discharge pipeline along the opening for making area and reserved elevator by laying to foundation ditch, root
It is unearthed amount and concentration of hydraulic mixture to calculate spoil disposal pipe diameter according to daily hydraulic reclamation, while considering that peak period sludge volume is more than average value and set
It is standby to damage maintenance, discharge pipeline should be set up, mud is in mud conditioning area precipitation process, rear mud upper strata clear water circulation profit to be precipitated
With bottom mud is transported to spoir point；
5) inverse to make area's basement concrete floor slab placement, Xian Duishunzuo areas are excavated, and are then carried out the inverse excavation for making area, are facilitated machine
Tool excavate when use mechanical equivalent of light excavation, mechanical equivalent of light excavation by limited time then use hydraulicking, to it is inverse make area carry out hydraulicking when, can
Along along the several punching digging points of area periphery arrangement are made, High-Pressure Water is sprayed by hydraulic giant and washes away the soil body, mud is formed and flow to mud pit, rush
Avoid current level to rush at intermediate sup-poning pile or post during digging, current cylinder should be made and intermediate sup-poning pile or column section are tangent is rushed
Brush, prevents from causing the damage of intermediate sup-poning pile or post, when the floor level of two layers of underground is excavated to, pours the bottom of B1
Plate, the bottom plate of B1 is forming opening along the position for making area, continues the downward earthwork for excavating F3/B3 to floor level
Afterwards, the bottom plate of two layers of underground is poured, the bottom plate of the floor of underground two is forming opening along the position for making area, repeating to excavate until away from foundation ditch
The position of substrate certain altitude, pours the top plate of subsurface formation, the top plate of subsurface formation along the position for making area formed opening (see
Fig. 2), in digging process, the top of each layer of basement, bottom plate can set transfer water tank and middle dump mud as workbench
Case, is connected by transfer water pump and transfer slush pump with jet water spout and discharge pipeline respectively, it is ensured that supply water and spoil disposal smoothly enter
OK；
6) the clear bottom of foundation ditch, is excavated to behind the position away from foundation ditch substrate 180mm~200mm, using human assistance mini-plant
Clear bottom, is promoted at once clear bottom to foundation ditch substrate absolute altitude, the earthwork at clear bottom is high using muck haulage heap, and heap is high from the inverse area that makees to the suitable area that makees
1m~2m scopes carried out after sluicing transport, the rubble that finally removes rubbish the bottom slab concreting of subsurface formation (see Fig. 3)；
7) along making area's basement concrete floor slab placement, poured along each floor top plate formwork of area's basement is made, finally carry out it is inverse make area with
Along corresponding connection processing of area's basement with each floor top plate at absolute altitude is made, underground construction is completed.
This method is applied to the high soil property for easily forming mud of the water content such as silty clay, sandy soil, fine grained soil.
Claims (6)
1. a kind of excavation method of reverse construction foundation ditch, it is characterised in that comprise the following steps：
1) setting of foundation pit enclosure structure, diaphragm wall is set in foundation ditch surrounding, carries out subregion according to foundation ditch top building, really
Ding Shunzuo areas and it is inverse make area, determine to excavate thickness according to the earth volume of excavation of foundation pit and digging mode, and inverse make in area's foundation ditch
Portion interval pours or laid intermediate sup-poning pile or post；
2) pour top workbench, top layer uses mechanical equivalent of light excavation, wait to dig to B1 bottom plate absolute altitude after-pouring it is next
The top plate of layer, top plate is forming opening along the position for making area and reserved elevator, top plate can as excavation of foundation pit workbench；
3) hydraulicking device is set, water tank is set on top plate, water pump is set in tank top, passes through intake pipe and water source
It is connected, bottom sets several jet water pumps, is connected by jet water spout with hydraulic giant, jet water spout makees opening for area and reserved elevator by suitable
Mouth enters foundation ditch；
4) mud feeding device is set, mud pit, mud are formed by mechanical equivalent of light excavation in mechanical work blind area and regional center (RC) position
Slush pump is provided with pond, mud is transported to mud conditioning area by slush pump by discharge pipeline, and discharge pipeline makees area and reserved by suitable
The opening of elevator is laid to foundation ditch；
5) inverse to make area's basement concrete floor slab placement, Xian Duishunzuo areas are excavated, and are then carried out the inverse excavation for making area, are facilitated machinery to open
Use mechanical equivalent of light excavation during digging, mechanical equivalent of light excavation by then using hydraulicking in limited time, to it is inverse make area and carry out hydraulicking when, can be along suitable
Make the several punchings of area periphery arrangement and dig point, High-Pressure Water is sprayed by hydraulic giant and washes away the soil body, mud is formed and flow to mud pit, wait to excavate
To two layers of underground floor level when, pour the bottom plate of B1, the bottom plate of B1 is opened being formed along the position for making area
Mouthful, continue after the earthwork to the floor level of excavation F3/B3 downwards, pour the bottom plate of two layers of underground, the bottom plate that two layers of underground exists
Along the position formation opening for making area, repetition excavation until the position away from foundation ditch substrate certain altitude, pours the top plate of subsurface formation,
The top plate of subsurface formation is forming opening along the position for making area；
6) the clear bottom of foundation ditch, is excavated to behind the position away from foundation ditch substrate certain altitude, using the clear bottom of human assistance mini-plant, by inverse
Make area to promote at once clear bottom to foundation ditch substrate absolute altitude to the suitable area that makees, the earthwork at clear bottom is high using muck haulage heap, the high 1m~2m models of heap
Enclose the bottom slab concreting that subsurface formation is carried out after progress sluicing transport, the rubble that finally removes rubbish；
7) along area's basement concrete floor slab placement is made, poured along each floor top plate formwork of area's basement is made, finally progress is inverse to make area and along work
Corresponding connection processing of area's basement with each floor top plate at absolute altitude.
2. a kind of excavation method of reverse construction foundation ditch according to claim 1, it is characterised in that the step 1) in
Excavation thickness is 1.4m~1.6m, and the difference in height of each teams and groups' excavated surface is less than or equal to 80cm.
3. a kind of excavation method of reverse construction foundation ditch according to claim 1, it is characterised in that the step 4) in
Mud pit bottom absolute altitude is less than excavation soil layer top surface absolute altitude 0.5m~1m.
4. a kind of excavation method of reverse construction foundation ditch according to claim 1, it is characterised in that the step 4) in
Mud is recycled in mud conditioning area precipitation process, rear mud upper strata clear water to be precipitated, and bottom mud is transported to spoir point.
5. a kind of excavation method of reverse construction foundation ditch according to claim 1, it is characterised in that the step 5) in
Certain altitude is 180mm~200mm.
6. a kind of excavation method of reverse construction foundation ditch according to claim 1, it is characterised in that the step 5) in
The top of each layer of basement, bottom plate can be set transfer water tank and middle dump mud box, pass through transfer water pump respectively as workbench
It is connected with transfer slush pump with jet water spout and discharge pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710212962.7A CN106988345A (en) | 2017-04-01 | 2017-04-01 | A kind of excavation method of reverse construction foundation ditch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710212962.7A CN106988345A (en) | 2017-04-01 | 2017-04-01 | A kind of excavation method of reverse construction foundation ditch |
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| CN106988345A true CN106988345A (en) | 2017-07-28 |
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| CN201710212962.7A Pending CN106988345A (en) | 2017-04-01 | 2017-04-01 | A kind of excavation method of reverse construction foundation ditch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111519965A (en) * | 2020-05-26 | 2020-08-11 | 中国建筑第四工程局有限公司 | Reverse construction method for cellar pool of factory building for making liquor from Maotai-flavor liquor |
| CN111762658A (en) * | 2020-07-16 | 2020-10-13 | 湖南建工集团有限公司 | Method for installing elevator in deep foundation pit construction by reverse construction method |
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| CN106245652A (en) * | 2016-08-04 | 2016-12-21 | 中建三局第二建设工程有限责任公司 | A kind of construction method of deep foundation pit earthwork digging near a river |
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2017
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|---|---|---|---|---|
| EA000555B1 (en) * | 1997-04-16 | 1999-10-28 | 998492 Онтарио Инк. | Undercut excavation with protection against seismic events or excessive ground movement |
| JP2002021098A (en) * | 2000-07-10 | 2002-01-23 | Aoki Corp | Cut and cover tunneling method |
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| CN106245652A (en) * | 2016-08-04 | 2016-12-21 | 中建三局第二建设工程有限责任公司 | A kind of construction method of deep foundation pit earthwork digging near a river |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111519965A (en) * | 2020-05-26 | 2020-08-11 | 中国建筑第四工程局有限公司 | Reverse construction method for cellar pool of factory building for making liquor from Maotai-flavor liquor |
| CN111762658A (en) * | 2020-07-16 | 2020-10-13 | 湖南建工集团有限公司 | Method for installing elevator in deep foundation pit construction by reverse construction method |
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