CN107023013A - A kind of green precipitation method for making full use of hydrogeological characteristic - Google Patents
A kind of green precipitation method for making full use of hydrogeological characteristic Download PDFInfo
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- CN107023013A CN107023013A CN201710410969.XA CN201710410969A CN107023013A CN 107023013 A CN107023013 A CN 107023013A CN 201710410969 A CN201710410969 A CN 201710410969A CN 107023013 A CN107023013 A CN 107023013A
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- precipitation method
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- 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
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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
- E02D19/10—Restraining of underground water by lowering level of ground water
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A kind of green precipitation method for making full use of hydrogeological characteristic, comprises the following steps：1）, foundation ditch draw the determination of water percolating capacity；2）, calculate and single draw seepage well capacity of outlet water：3）, determine to draw infiltration to the water level value influence value in bottom water-bearing layer；4）, determine precipitation form and pipe well spacing.Present invention process is simple; the abundant water regime of soil layer itself; a number of draw seepage well by setting; drainage top backwater and top water-bearing layer; not only reduce the consumption of energy; water resource is protected, and reduces a large amount of sedimentations drawn water and cause surrounding buildingses to consolidate, is a kind of safety, economic, environmental protection new precipitation method.In work progress, it can simultaneously set and draw seepage well progress reduction Water Level in Foundation Pit, it is to avoid the geological disaster such as piping, drift sand, allow pattern foundation pit supporting structure to be carried out, so as to shorten the foundation pit support construction duration.In addition, setting appropriate position drawing seepage well, it is not necessary to when backfilling sandstone and being shunt in a well, be conducive to the antiseepage of hypogee and the drying of guarantee basement.
Description
Technical field
The present invention relates to building foundation pit precipitation method, specially a kind of green precipitation for making full use of hydrogeological characteristic
Method.
Background technology
For being water barrier between water-bearing layer in the range of base pit dewatering, upper aqueous layer penetrating power is less than bottom aqueous layer
Penetrating power, bottom aqueous layer water level is less than precipitation depth and with certain thickness and dissolving more than or equal in precipitation depth
Pit Discharge, when the water quality of upper strata underground water is not comtaminated can introduce underlying earth water, this kind of earth formation can lead to
Cross set depth different draw seepage well and will connect in water-bearing layer up and down, upper aqueous layer will be made in head difference and self gravitation
With lower inflow bottom aqueous layer, so as to reach drainage top water-bearing layer, part pumping equipment is this method save, energy is reduced
Consumption, protect water resource.
Therefore it provides one kind makes full use of above-mentioned hydrogeology to carry out dewatering design, it is thus necessary to determine that setting is drawn seepage well and caused
The relation of water level and design water level after the change of bottom water-bearing layer, and then the method for determining precipitation, being one is worth research
The problem of.
The content of the invention
In order to overcome above-mentioned deficiency of the prior art, dropped the invention provides one kind point using above-mentioned hydrogeology
Water, by set it is a number of draw seepage well, drainage top backwater and top water-bearing layer not only reduce the consumption of energy,
Water resource is protected, and reduces the green precipitation method of a large amount of sedimentations drawn water and cause surrounding buildingses to consolidate.
The object of the present invention is achieved like this：
A kind of green precipitation method for making full use of hydrogeological characteristic, comprises the following steps：1), foundation ditch draws water percolating capacity
It is determined that；2), calculating is single draws seepage well capacity of outlet water：3), determine to draw water level value influence value of the infiltration to bottom water-bearing layer；4), really
Determine precipitation form and pipe well spacing.
Described foundation ditch draws the determination of water percolating capacity, concretely comprises the following steps the water burst for determining to need to draw according to stratum soil property situation and oozing
Amount, the water yield can be that perched water and needs draw the multi-layered aquifer oozed, according to homogeneous aquifer diving complete penetration of well formula,
Each layer water-bearing layer water yield is calculated respectively, and is overlapped and is collected：
In formula：Total yield (the m of Q --- base pit dewatering3/d)；
K --- infiltration coefficient (m/d)；
H0--- phreatic aquifer (m)；
s0--- Water Level in Foundation Pit drawdown；
R --- Rainfall Influence radius；
r0--- the precipitation gang of wells being evenly arranged along foundation ditch periphery encloses the radius (m) of area equivalent circle.
It is described it is single draw seepage well capacity of outlet water calculation formula be：
In formula：q0--- individual well capacity of outlet water；
rs--- filter radius (m)；
L --- filter water inlet portion length (m)；
K --- AQUIFER HYDRAULIC.
Described determination precipitation form and pipe well spacing：
If bottom aqueous layer head subtracts design water level much larger than Δ h, it can take and all draw seepage well from scheme is oozed, it, which draws, oozes
Well number isDraw seepage well spacing for D=P/ (n-1), and enter according to water-bearing layer water inlet and water outlet position and the radius of influence
Row arrangement.
Described determination precipitation form and pipe well spacing：If bottom aqueous layer head subtracts design water level and is comparable to Δ h, can
Take ooze to take out well spacing form more.
Described determination precipitation form and pipe well spacing：If bottom aqueous layer head subtracts design water level less than Δ h, Ying Gen
According to artesian water complete penetration of well calculation formula, the water yield for needing to extract is calculated, and considers that completely determining for surrounding environment may be caused
Precipitation scheme.
Positive beneficial effect：Construction technology of the present invention is simple, the abundant water regime of soil layer itself, certain by setting
Quantity draws seepage well, drainage top backwater and top water-bearing layer, not only reduces the consumption of energy, protects water resource, and
A large amount of sedimentations drawn water and cause surrounding buildingses to consolidate are reduced, are a kind of safety, economic, environmental protection new precipitation method.Construction
During, it can simultaneously set and draw seepage well and carry out reduction Water Level in Foundation Pit, it is to avoid the geological disaster such as piping, drift sand, allow pattern foundation pit supporting structure
Carried out, so as to shorten the foundation pit support construction duration.In addition, setting appropriate position drawing seepage well, it is not necessary to Cast-in-situ Piles in Sand-filling
When stone is shunt in a well, be conducive to the antiseepage of hypogee and ensure the drying of basement.
Embodiment
With reference to overall plan, the present invention is described further：
A kind of green precipitation method for making full use of hydrogeological characteristic, comprises the following steps：1), foundation ditch draws water percolating capacity
It is determined that；2), calculating is single draws seepage well capacity of outlet water：3), determine to draw water level value influence value of the infiltration to bottom water-bearing layer；4), really
Determine precipitation form and pipe well spacing.
1) foundation ditch draws the determination of water percolating capacity
Determine to need to draw the water yield oozed according to stratum soil property situation, the water yield can be perched water and need to draw to ooze
Multi-layered aquifer, according to homogeneous aquifer dive under water complete penetration of well formula, each layer water-bearing layer water yield is calculated respectively, and folded
Plus collect.
In formula：Total yield (the m of Q --- base pit dewatering3/d)；
K --- infiltration coefficient (m/d)；
H0--- phreatic aquifer (m)；
s0--- Water Level in Foundation Pit drawdown；
R --- Rainfall Influence radius；
r0--- the precipitation gang of wells being evenly arranged along foundation ditch periphery encloses the radius (m) of area equivalent circle；
2) it is single to draw seepage well capacity of outlet water：
In formula：q0--- individual well capacity of outlet water；
rs--- filter radius (m)；
L --- filter water inlet portion length (m)；
K --- AQUIFER HYDRAULIC；
3) water level value influence value of the infiltration to bottom water-bearing layer is drawn
Upper soil horizon draws the water oozed through drawing seepage well inflow bottom water-bearing layer in the range of precipitation, will cause the water in bottom water-bearing layer
The rising of place value, its numerical value can be calculated using pressure-bearing whole well water yield calculation formula.
In formula：Q --- draw infiltration total amount；
R --- draw and ooze the radius of influence after underground water；
r0--- draw seepage well radius；
K --- artesian water draws infiltration layer infiltration coefficient；
M --- artesian aquifer thickness；
4) precipitation form and pipe well spacing are determined
If bottom aqueous layer head subtracts design water level much larger than Δ h, it can take and all draw seepage well from scheme is oozed, it, which draws, oozes
Well number isDraw seepage well spacing for D=P/ (n-1), and enter according to water-bearing layer water inlet and water outlet position and the radius of influence
Row arrangement.
If bottom aqueous layer head subtracts design water level and be comparable to Δ h, " ooze more and take out " well spacing form can be taken；
If bottom aqueous layer head subtracts design water level less than Δ h, should be according to artesian water complete penetration of well calculation formula, calculating needs
The water yield to be extracted, and consider that the precipitation scheme that completely determines of surrounding environment may be caused, the program may be for " one oozes one
Take out ", the precipitation form of " two ooze take out ".
Present invention process is simple, the abundant water regime of soil layer itself, a number of draws seepage well, drainage by setting
Top backwater and top water-bearing layer, not only reduce the consumption of energy, protect water resource, and reduce a large amount of draw water and cause
The sedimentation of surrounding buildingses consolidation, is a kind of safety, economic, environmental protection new precipitation method.In work progress, it can set simultaneously
Draw seepage well and carry out reduction Water Level in Foundation Pit, it is to avoid the geological disaster such as piping, drift sand, allow pattern foundation pit supporting structure to be carried out, so as to shorten
The foundation pit support construction duration.In addition, setting appropriate position drawing seepage well, it is not necessary to when backfilling sandstone and being shunt in a well, be conducive to
The antiseepage of hypogee and the drying for ensureing basement.
It is merely illustrative of the technical solution of the present invention and unrestricted, the knowledge possessed in the those of ordinary skill above
In the range of, technical scheme is modified or equivalent substitution, without departing from the objective and scope of the technical program,
It all should cover among scope of the presently claimed invention.
Claims (6)
1. a kind of green precipitation method for making full use of hydrogeological characteristic, it is characterised in that：Comprise the following steps：1), foundation ditch
Draw the determination of water percolating capacity；2), calculating is single draws seepage well capacity of outlet water：3), determine to draw water level value shadow of the infiltration to bottom water-bearing layer
Ring value；4) precipitation form and pipe well spacing, are determined.
2. a kind of green precipitation method for making full use of hydrogeological characteristic according to claim 1, it is characterised in that：Institute
The foundation ditch stated draws the determination of water percolating capacity, concretely comprises the following steps the water yield for determining to need to draw according to stratum soil property situation and oozing, the water burst
Amount can be that perched water and needs draw the multi-layered aquifer oozed, according to homogeneous aquifer diving complete penetration of well formula, calculate respectively
Go out each layer water-bearing layer water yield, and be overlapped and collect：
In formula：Total yield (the m of Q --- base pit dewatering3/d)；
K --- infiltration coefficient (m/d)；
H0--- phreatic aquifer (m)；
s0--- Water Level in Foundation Pit drawdown；
R --- Rainfall Influence radius；
r0--- the precipitation gang of wells being evenly arranged along foundation ditch periphery encloses the radius (m) of area equivalent circle.
3. a kind of green precipitation method for making full use of hydrogeological characteristic according to claim 1, it is characterised in that：Institute
State it is single draw seepage well capacity of outlet water calculation formula be：
In formula：q0--- individual well capacity of outlet water；
rs--- filter radius (m)；
L --- filter water inlet portion length (m)；
K --- AQUIFER HYDRAULIC.
4. a kind of green precipitation method for making full use of hydrogeological characteristic according to claim 1, it is characterised in that：Institute
The determination precipitation form stated and pipe well spacing, if bottom aqueous layer head subtracts design water level much larger than Δ h, can take and all draw
Seepage well is from oozing scheme, and it draws seepage well number and isDraw seepage well spacing for D=P/ (n-1), and according to water-bearing layer water inlet and
Water outlet position and the radius of influence are arranged.
5. a kind of green precipitation method for making full use of hydrogeological characteristic according to claim 1, it is characterised in that：Institute
The determination precipitation form stated and pipe well spacing, if bottom aqueous layer head subtracts design water level and be comparable to Δ h, can take and ooze one more
Take out well spacing form.
6. a kind of green precipitation method for making full use of hydrogeological characteristic according to claim 1, it is characterised in that：Institute
The determination precipitation form stated and pipe well spacing, should be complete according to artesian water if bottom aqueous layer head subtracts design water level less than Δ h
Whole well calculation formula, calculates the water yield for needing to extract, and consider that may cause surrounding environment completely determines precipitation scheme.
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| CN201710410969.XA CN107023013A (en) | 2017-06-04 | 2017-06-04 | A kind of green precipitation method for making full use of hydrogeological characteristic |
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| CN201710410969.XA CN107023013A (en) | 2017-06-04 | 2017-06-04 | A kind of green precipitation method for making full use of hydrogeological characteristic |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110309520A (en) * | 2018-03-27 | 2019-10-08 | 北京交通大学 | A kind of calculation method and its application of stratum partially-penetrated well effective reinforcing depth of diving under water |
| CN110777830A (en) * | 2019-08-30 | 2020-02-11 | 中电建十一局工程有限公司 | Foundation pit dewatering control method under geological condition of water-rich thick gravel layer |
| CN113236359A (en) * | 2021-05-28 | 2021-08-10 | 中煤科工集团西安研究院有限公司 | Separation layer water drainage method, separation layer water drainage roadway system and construction method |
Citations (3)
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| JPH08246780A (en) * | 1995-03-10 | 1996-09-24 | Shimabukuro Naoya | Saltwater cultivating well and method for sinking the well |
| CN102778260A (en) * | 2012-05-17 | 2012-11-14 | 中南大学 | Calculation method for water drainage and water drainage time in dynamic precipitation process of submersible fully penetrating well or well group |
| AU2013252230B2 (en) * | 2012-04-28 | 2016-05-12 | China Shenhua Energy Company Limited | Method for distributed storage and use of underground water in mine |
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2017
- 2017-06-04 CN CN201710410969.XA patent/CN107023013A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08246780A (en) * | 1995-03-10 | 1996-09-24 | Shimabukuro Naoya | Saltwater cultivating well and method for sinking the well |
| AU2013252230B2 (en) * | 2012-04-28 | 2016-05-12 | China Shenhua Energy Company Limited | Method for distributed storage and use of underground water in mine |
| CN102778260A (en) * | 2012-05-17 | 2012-11-14 | 中南大学 | Calculation method for water drainage and water drainage time in dynamic precipitation process of submersible fully penetrating well or well group |
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| 任海香，张廷会: "《管井与引渗井相结合在某基坑降水中的应用》", 《地下水》 * |
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| 彭泽瑞主编: "《北京地铁复一八线土建工程施工技术》", 31 August 2003 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110309520A (en) * | 2018-03-27 | 2019-10-08 | 北京交通大学 | A kind of calculation method and its application of stratum partially-penetrated well effective reinforcing depth of diving under water |
| CN110777830A (en) * | 2019-08-30 | 2020-02-11 | 中电建十一局工程有限公司 | Foundation pit dewatering control method under geological condition of water-rich thick gravel layer |
| CN113236359A (en) * | 2021-05-28 | 2021-08-10 | 中煤科工集团西安研究院有限公司 | Separation layer water drainage method, separation layer water drainage roadway system and construction method |
| CN113236359B (en) * | 2021-05-28 | 2022-06-28 | 中煤科工集团西安研究院有限公司 | Separation layer water drainage method, separation layer water drainage roadway system and construction method |
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Application publication date: 20170808 |