CN110055986A - It is a kind of for determining the classification classification and Multipurpose Optimal Method of foundation pit artesian water control program - Google Patents
It is a kind of for determining the classification classification and Multipurpose Optimal Method of foundation pit artesian water control program Download PDFInfo
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- CN110055986A CN110055986A CN201910193722.6A CN201910193722A CN110055986A CN 110055986 A CN110055986 A CN 110055986A CN 201910193722 A CN201910193722 A CN 201910193722A CN 110055986 A CN110055986 A CN 110055986A
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- foundation pit
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- artesian water
- artesian
- water
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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
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
Abstract
The invention discloses a kind of for determining the classification classification and Multipurpose Optimal Method of foundation pit artesian water control program, and feature is the following steps are included: S1, data collection, investigation establish place groundwater resource evaluation；S2 is classified artesian water influence degree suffered by foundation pit；S3 is classified foundation pit artesian water construction quality；S4 chooses pressure-bearing water disposal plan according to classification；S5 drafts a variety of alternative control programs in conjunction with different engineering methods；S6, based on multiple-objection optimization optimum scheme comparison, advantage is can be for the type of artesian water in different foundation pits, accurate evaluation artesian water changes the influence to surrounding enviroment, to balance other limiting factors such as construction investment, engineering safety, environment, ecology, it realizes the assessment to artesian water control program, provides scientific basis for the final determination of artesian water control program.
Description
Technical field
The present invention relates to a kind of Multipurpose Optimal Methods more particularly to a kind of for determining foundation pit artesian water control program
Classification classification and Multipurpose Optimal Method.
Background technique
Urban track traffic is important means the problems such as solving big and medium-sized cities traffic congestion, shortage of land resource, with
The extensive development of urban construction, deep basal pit project emerges in multitude in city track traffic engineering, and scale and depth be not
Disconnected to increase, deep pit monitor risk becomes higher and higher, while the environment on foundation pit periphery becomes to become increasingly complex, environmental Kuznets Curves requirement
More increase.In the region of lithic drainage prosperity, especially under the geological conditions comprising artesian aquifer, foundation pit, which constantly excavates, to be made
The impermeable layer thickness cheated between bottom and bearing course is smaller and smaller, when its be less than it is anti-it is prominent gush critical thickness when, it is possible to occur prominent
Accident is gushed, therefore controls foundation pit artesian water, reduces construction surrounding enviroment influence and is of great significance to engineering construction.Foundation pit pressure-bearing
The Engineering Control means of water separate the significant effect of means mainly with precipitation and completely based on partition completely, but difficulty of construction is big,
Project cost is high；And precipitation means being affected and lack accurate prediction technique to surrounding enviroment is used, there is a Dingan County
Full hidden danger.Although its research achievement spininess is to a certain spy currently, numerous studies are unfolded in terms of artesian water control in different researchers
Determine engineering or a certain specific engineering method, and non-quantification analyzes restrictive condition.Therefore, sub-category to form foundation pit artesian water
Control technology takes into account safety, economy and the feasibility of engineering, a kind of for determining foundation pit pressure-bearing water control there is an urgent need to research and develop
The Multipurpose Optimal Method of scheme processed.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of quantification, fining and there is Engineering Guidance really
Determine the classification classification and Multipurpose Optimal Method of foundation pit artesian water control program, this method can be for artesian water in different foundation pits
Type, accurate evaluation artesian water changes influence to surrounding enviroment, to balance construction investment, engineering safety, environment, ecology
Deng other limiting factors, the assessment to artesian water control program is realized, provide science for the final determination of artesian water control program
Foundation.
The technical scheme of the invention to solve the technical problem is: a kind of for determining foundation pit artesian water controlling party
The classification classification of case and Multipurpose Optimal Method, comprising the following steps:
S1, data collection, investigation establish place hydrogeological parameter model；
S2 is classified artesian water influence degree suffered by foundation pit, specifically includes: in conjunction with the hydrogeological parameter mould established
Type, choosing, which influences maximum artesian aquifer (i.e. to precipitation or to insulating course) to foundation pit, is used as partitioning standards, according to artesian aquifer
Thickness, artesian aquifer drawdown value and water outflow from single well factor, artesian water influence degree suffered by foundation pit is divided from high to low
It is as shown in table 1 for four level-one, second level, three-level and level Four grades:
The classification of artesian water influence degree suffered by 1 foundation pit of table
When being wherein classified to artesian water influence degree suffered by foundation pit, if artesian aquifer thickness < 6 m, directly divide four into
Grade；If water outflow from single well is higher than 500m3/d and when influence degree grade is second level or three-level, influence degree grade increases one
Grade；
S3 is classified foundation pit artesian water construction quality, specifically includes: according to artesian water suffered by deep pit monitor grade and foundation pit
Influence degree, carry out foundation pit artesian water construction quality classification, foundation pit artesian water construction quality be divided into from high to low level-one, second level,
Four grades of three-level and level Four, as shown in table 2:
2 foundation pit artesian water construction quality of table
；
S4 chooses pressure-bearing water disposal plan according to classification, specific as follows: according to foundation pit artesian water construction quality is pressed, classification is chosen
Pressure-bearing water disposal plan, as shown in table 3:
3 foundation pit artesian water classification processing method of table
；
S5 drafts a variety of alternative artesian water control programs, specifically includes in conjunction with different engineering methods: based at the classification of foundation pit artesian water
Reason method analyzes the superiority and inferiority of different construction engineering method, chooses suitable processing engineering method for foundation pit pressure-bearing method for treating water, determines
Alternative artesian water control program；
S6 is based on multiple-objection optimization optimum scheme comparison, specifically includes: multiple-objection optimization analysis is carried out in conjunction with each limiting factor,
The optimality analysis to alternative artesian water control program is completed, the suggested design for meeting selection condition is obtained and its chooses opinion.
In the step S1, the impact factor of hydrogeological parameter model includes: 1) morpheme factor, and main includes diving
And artesian water buried depth, thickness and Building Settlement around Foundation range；2) physical index mainly includes soil body mechanical index, infiltration system
Number, artesian water water quality, artesian aquifer drawdown value, corrosivity and water outflow from single well.
In the step S3, deep pit monitor grade is according to " building foundation engineering construction quality acceptance specification "
The requirement of GB50202-2002, according to surrounding enviroment complexity, cutting depth and environmental requirement, by base pit engineering security level
It is divided into level-one, second level and three-level；Or according to the requirement in " Code for design of building " GB50007-2011, base area
Base complexity, architectural scale and functional character and since ground problem causes building destruction or influences normal use
Degree is divided into level-one, second level and three-level.
In the step S5, the superiority and inferiority evaluating basis of construction technology engineering method includes ground adaptability, at wall depth, Cheng Qiang
Thickness, water proof effect and cost；The processing engineering method includes water-stop curtain technology and precipitation technology, the water-stop curtain skill
Art includes equal thickness Soil-cement diaphragm wall, traditional steel triaxial soil-cement stirring wall, the rigid triaxial cement stirring of ultra-deep type
Wall, cast-in-situ bored pile, diaphram wall, RJP engineering method, MJS engineering method and N-JET engineering method；The precipitation technology includes light-duty well
Point, electro-osmosis well point, draws seepage well point, pipe well points and radiation well point at ejector well point.
In the step S6, each limiting factor includes engineering economy, structure durability, engineering importance, tune at a specified future date
Whole ability, the influence degree of disturbance, the complexity of construction and the ecological balance.
Compared with the prior art, the advantages of the present invention are as follows:
(1) strong applicability, fining degree are high.The present invention by artesian water suffered by different foundation pits influence type classify,
Artesian water construction quality is classified, and evaluates different artesian waters further directed to different engineering method techniques and other limiting factors
The superiority and inferiority of processing scheme finds preferably processing scheme under the premise of ensuring control effect, is applicable to various engineering specifications
Under foundation pit pressure-bearing water management.
(2) high reliablity analyzes quantification.The present invention uses hierarchy model, while being aided with modifying factor to evaluation grade
It is reasonably adjusted, its reliability is high, can be analyzed for the foundation pit artesian water of not background condition, more reasonably and accurately
Assess influence of the artesian water variation to surrounding enviroment in foundation pit construction.
(3) overall evaluation system has Engineering Guidance meaning.The present invention is on the basis of refining model, to engineering economy
Etc. limiting factors carry out multiple-objection optimization analysis, quantification relatively assesses each alternative control program, to be specified
Optimization scheme under demand balances the relationship between each Consideration of engineering, takes into account economy, safety and feasibility, right
There is high directive significance in the selection of foundation pit artesian water control program.
In conclusion present invention firstly discloses it is a kind of for determine foundation pit artesian water control program classification be classified with it is more
Purpose optimal method provides point of a kind of quantification, fining, determination foundation pit artesian water control program with Engineering Guidance
Class classification and Multipurpose Optimal Method, with this for the type of artesian water in different foundation pits, accurate evaluation artesian water changed to week
The influence of surrounding environment is realized to balance other limiting factors such as construction investment, safety, environment, ecology to artesian water controlling party
The assessment of case provides scientific basis for the final determination of artesian water control program.
Detailed description of the invention
Fig. 1 is flow chart of the invention；
Fig. 2 is control effect of the invention-project cost biobjective scheduling schematic diagram.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Specific embodiment
It is a kind of for determining the classification classification and Multipurpose Optimal Method of foundation pit artesian water control program, as shown in Figure 1, can
With the type for artesian water in different foundation pits, accurate evaluation artesian water changes the influence to surrounding enviroment, to balance engineering
Other limiting factors such as investment, engineering safety, environment, ecology realize the assessment to artesian water control program, are pressure-bearing water management
Final determine of scheme provides scientific basis.Specifically includes the following steps:
S1, data collection, investigation establish place hydrogeological parameter model, wherein the impact factor of hydrogeological parameter model
It include: 1) morpheme factor, main includes diving and artesian water buried depth, thickness and Building Settlement around Foundation range；2) physical index,
It mainly include soil body mechanical index, infiltration coefficient, artesian water water quality, corrosivity and water outflow from single well；
S2 is classified artesian water influence degree suffered by foundation pit, specifically includes: in conjunction with the hydrogeological parameter mould established
Type, choosing, which influences maximum artesian aquifer (i.e. to precipitation or to insulating course) to foundation pit, is used as partitioning standards, according to artesian aquifer
Thickness, artesian aquifer drawdown value and water outflow from single well factor, artesian water influence degree suffered by foundation pit is divided from high to low
It is as shown in table 1 for four level-one, second level, three-level and level Four grades:
The classification of artesian water influence degree suffered by 1 foundation pit of table
When being wherein classified to artesian water influence degree suffered by foundation pit, if artesian aquifer thickness < 6 m, directly divide four into
Grade；If water outflow from single well is higher than 500m3/d and when influence degree grade is second level or three-level, influence degree grade increases one
Grade；
S3 is classified foundation pit artesian water construction quality, specifically includes: influenced in conjunction with foundation pit construction quality and artesian water etc.
Grade, is classified foundation pit artesian water controlling extent, wherein it is divided into four grades from high to low, classification level is higher,
Controlling extent is bigger, specific as follows: according to artesian water influence degree suffered by deep pit monitor grade and foundation pit, carrying out foundation pit artesian water
Construction quality classification, artesian water construction quality are divided into four level-one, second level, three-level, level Four grades, as shown in table 2:
2 foundation pit artesian water construction quality of table
Wherein, deep pit monitor grade is wanted according to " building foundation engineering construction quality acceptance specification " GB50202-2002
Ask, according to surrounding enviroment complexity, cutting depth, environmental requirement etc. by base pit engineering safety status classification be level-one, second level,
Three-level；Or according to the requirement in " Code for design of building " GB50007-2011, according to ground complexity, building
Scale and functional character and due to ground problem may cause building destruction or influence normal use degree be divided into first
Grade, second class, third class (respectively corresponding level-one, second level, three-level in table 2)；
S4 chooses pressure-bearing water disposal plan according to classification, specific as follows: according to foundation pit artesian water construction quality is pressed, classification is chosen
Pressure-bearing water disposal plan, as shown in table 3:
3 foundation pit artesian water classification processing method of table
；
S5 drafts a variety of alternative control programs in conjunction with different engineering methods；
Based on above-mentioned foundation pit artesian water classification processing method, the excellent of different construction engineering method under particular procedure scheme can be analyzed
It is bad, suitable processing engineering method is chosen as processing method, determines alternative processing scheme, wherein the superiority and inferiority of construction technology engineering method
Include but are not limited to ground adaptability, at wall depth, at wall thickness, water proof effect, feature and cost.For specifically handling work
Method, water-stop curtain technology includes but are not limited to equal thickness Soil-cement diaphragm wall, traditional steel triaxial soil-cement stirs wall,
The rigid triaxial cement of ultra-deep type stirs wall, cast-in-situ bored pile, diaphram wall, RJP engineering method, MJS engineering method, N-JET engineering method；Precipitation
Technology includes but are not limited to light well point, ejector well point, electro-osmosis well point, draws seepage well point, pipe well points, radiation well point；
S6 is based on multiple-objection optimization optimum scheme comparison, specifically includes: multiple-objection optimization analysis is carried out in conjunction with each limiting factor,
The optimality analysis to alternative artesian water control program is completed, the suggested design for meeting selection condition is obtained and its chooses opinion.
In conjunction with each limiting factor, optimization evaluation can be carried out to a variety of alternative processing schemes, wherein each limiting factor includes but not only limits
In engineering economy, structure durability, engineering importance, adjustment capability, the influence degree of disturbance, the complexity of construction at a specified future date
And the ecological balance.
As shown in Fig. 2, analyzing a variety of alternatives by taking the analysis of control effect-project cost biobjective scheduling as an example
The relationship of control effect and project cost can find Pareto forward position by multiple existing codes, it should be noted that Pareto
Scheme on forward position is better than outside forward position other alternatives, and each scheme on forward position is then without point of superiority and inferiority, because
Scheme on this Pareto forward position can be employed as final scheme.Consider that cost is the major influence factors of practice of construction Model Selection Scheme
One of, final scheme is chosen in combination with feasible value, level can also be carried out further combined with other limiting factors
The scheme on Pareto forward position is further screened in analysis.
Above description is not limitation of the present invention, and the present invention is also not limited to the example above.The art it is common
Within the essential scope of the present invention, the variations, modifications, additions or substitutions made also should belong to protection of the invention to technical staff
Range.
Claims (5)
1. a kind of for determining the classification classification and Multipurpose Optimal Method of foundation pit artesian water control program, it is characterised in that including
Following steps:
S1, data collection, investigation establish place hydrogeological parameter model；
S2 is classified artesian water influence degree suffered by foundation pit, specifically includes: in conjunction with the hydrogeological parameter mould established
Type, choosing influences maximum artesian aquifer as partitioning standards, according to artesian aquifer thickness, artesian aquifer drawdown to foundation pit
Value and water outflow from single well factor, are divided into level-one, second level, three-level and level Four for artesian water influence degree suffered by foundation pit from high to low
Four grades, as shown in table 1:
The classification of artesian water influence degree suffered by 1 foundation pit of table
When being wherein classified to artesian water influence degree suffered by foundation pit, if artesian aquifer thickness < 6 m, directly divide four into
Grade；If water outflow from single well is higher than 500m3/d and when influence degree grade is second level or three-level, influence degree grade increases one
Grade；
S3 is classified foundation pit artesian water construction quality, specifically includes: according to artesian water suffered by deep pit monitor grade and foundation pit
Influence degree, carry out foundation pit artesian water construction quality classification, foundation pit artesian water construction quality be divided into from high to low level-one, second level,
Four grades of three-level and level Four, as shown in table 2:
2 foundation pit artesian water construction quality of table
；
S4 chooses pressure-bearing water disposal plan according to classification, specific as follows: according to foundation pit artesian water construction quality is pressed, classification is chosen
Pressure-bearing water disposal plan, as shown in table 3:
3 foundation pit artesian water classification processing method of table
；
S5 drafts a variety of alternative artesian water control programs, specifically includes in conjunction with different engineering methods: based at the classification of foundation pit artesian water
Reason method analyzes the superiority and inferiority of different construction engineering method, chooses suitable processing engineering method for foundation pit pressure-bearing method for treating water, determines
Alternative artesian water control program；
S6 is based on multiple-objection optimization optimum scheme comparison, specifically includes: multiple-objection optimization analysis is carried out in conjunction with each limiting factor,
The optimality analysis to alternative artesian water control program is completed, the suggested design for meeting selection condition is obtained and its chooses opinion.
2. according to claim 1 a kind of for determining the classification classification and multiple-objection optimization of foundation pit artesian water control program
Method, it is characterised in that: in the step S1, the impact factor of hydrogeological parameter model includes that morpheme factor and physical property refer to
Mark, the morpheme factor include diving and artesian water buried depth, thickness and Building Settlement around Foundation range；The physical index
Including soil body mechanical index, infiltration coefficient, artesian water water quality, artesian aquifer drawdown value, corrosivity and water outflow from single well.
3. according to claim 1 a kind of for determining the classification classification and multiple-objection optimization of foundation pit artesian water control program
Method, it is characterised in that: in the step S3, deep pit monitor grade is according to " building foundation engineering construction quality is checked and accepted
Specification " requirement of GB50202-2002 pacifies base pit engineering according to surrounding enviroment complexity, cutting depth and environmental requirement
Congruent grade is divided into level-one, second level and three-level；Or according to the requirement in " Code for design of building " GB50007-2011,
According to ground complexity, architectural scale and functional character and since ground problem causes building destruction or influences normal
The degree used is divided into level-one, second level and three-level.
4. according to claim 1 a kind of for determining the classification classification and multiple-objection optimization of foundation pit artesian water control program
Method, it is characterised in that: in the step S5, the superiority and inferiority evaluating basis of construction technology engineering method includes ground adaptability, Cheng Qiang
Depth, at wall thickness, water proof effect and cost；The processing engineering method includes water-stop curtain technology and precipitation technology, described
Water-stop curtain technology includes equal thickness Soil-cement diaphragm wall, traditional steel triaxial soil-cement stirring wall, rigid three axis of ultra-deep type
Soil-cement Wall, cast-in-situ bored pile, diaphram wall, RJP engineering method, MJS engineering method and N-JET engineering method；The precipitation technology
Including light well point, ejector well point, electro-osmosis well point, draw seepage well point, pipe well points and radiation well point.
5. according to claim 1 a kind of for determining the classification classification and multiple-objection optimization of foundation pit artesian water control program
Method, it is characterised in that: in the step S6, each limiting factor includes that engineering economy, structure durability, engineering are important
Property, adjustment capability at a specified future date, the influence degree of disturbance, the complexity of construction and the ecological balance.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116756815A (en) * | 2023-06-08 | 2023-09-15 | 江苏兴华基础建设工程有限公司 | Parking lot pile foundation setting method based on driving data |
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