CN1239791C - Percolation water intaking method of new engineering structure - Google Patents
Percolation water intaking method of new engineering structure Download PDFInfo
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- CN1239791C CN1239791C CN 03135401 CN03135401A CN1239791C CN 1239791 C CN1239791 C CN 1239791C CN 03135401 CN03135401 CN 03135401 CN 03135401 A CN03135401 A CN 03135401A CN 1239791 C CN1239791 C CN 1239791C
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Abstract
The present invention relates to a method for pumping and collecting underground water, in particular to a percolation type water pumping method for a new engineering structure. The present invention is characterized in that the well bottom of a water collecting well is inserted into the base rock stratum for at least 5m, controlled orientation percolation holes which are formed from the base rock stratum to the sand gravel stratum are drilled around the well, and filters are arranged on the positions along the percolation holes for producing water and in the water containing layers of hole ends. The underground water which is pumped by the engineering structure which adopts the method of the present invention generally has no need of being treated by a water producing system; meanwhile, the respective advantages of a radial well and a natural filter bed percolation well are combined, and the technological disadvantages of the radial well and the natural filter bed percolation well are overcome to the maximum. The present invention has the advantages of simple engineering construction, less construction investment in the prior period, low operation cost in the later period, secure and reliable construction, no damage to ecological environment, no influence of disaster, stable water quality and water amount, etc.
Description
One, technical field
The method of the invention belongs to water intaking, catchmenting is specifically related to phreatic water intaking, catchment method.
Two, background technology
Phreatic intake technology is more, and can utilize the natural filtration on stratum, the existing technology that technical condition are close, and most typical is radial intake technology and Weeping well with natural filter bed intake technology.In April, 1978 by the Geology Publishing House " in hydrogeological handbook and 1996 Chinese architecture publishing house " the 3rd of the plumbing design manual ", the radial structure is introduced, it is at circumferentially the fetch water loose accumulation horizon of direction of large open well well, fetches water and catchments by manual rigid squeezing into no longer than the steel ported sub profit of 50m; It only be applicable to loose in, phreatic exploitation in the coarse sand accumulation horizon, and the control range of water intaking area is limited, can not improve the source water quality of getting.Weeping well with natural filter bed is the Chinese invention patent (ZL93110953.1) at notice of authorization on the 12nd February in 1997, it by pump house, vertical shaft, pilot shaft, river at the bottom of tunnel, chamber and pass the chamber wall and in sand pebble layer, form in the seepage flow hole of radiation; It has enlarged the water intaking scope of big well on the radial basis, can collect in the sand pebble layer of rivers bottom and underground river bed water, water intaking water quality is also good than radial, but there is following major technique defective in this Weeping well with natural filter bed: because it has at the bottom of the river tunnel and offset construct, to prospecting, the design levels of precision is had relatively high expectations, and present exploration means also can't be investigated thoroughly the geological condition (as the basement rock deep trouth) of bottom, riverbed fully, in case prospecting, design wrongly, can cause existing in the work progress gushing water, the serious potential safety hazard of roof fall (repeatedly occurring exposing the serious accident in riverbed in the actual engineering); And difficulty of construction is big, the construction costs height, and therefore, this patented technology can't be applied at present on a large scale.
Three, summary of the invention
The objective of the invention is to defective at above-mentioned prior art, propose the diafiltration method for fetching water of a kind of novel engineering structures of meter, make full use of that popular rig drilling depth in the basement rock stratum is big, the pore-forming condition is good, drilling efficiency is high, drilling cost is low, safe and reliable, workable, characteristics (loose accumulation horizon is then opposite) that the practitioner is many, reach and make engineer construction simplification, mechanization of building operation degree height, reduce engineering safety hidden danger and reduce the water quality and the stable purpose of the water yield of construction investment cost, water intaking to greatest extent.
Realize purpose of the present invention by the following technical solutions.
A kind of diafiltration method for fetching water, the engineering structures of constructing includes pumping plant, collecting well, it is characterized in that: collecting well choosing is built in the tax water tectonic province that underground water grows or the rivers limit bank that enriches the underground water supply source is arranged, hole diameter, well depth are decided according to on-the-spot physical condition and water intaking scale, the shaft bottom of collecting well embeds in the basement rock stratum 5m at least, be provided with the machine nest in the shaft bottom, lay around the machine nest and be embedded with many conduits, decide according to underground water-bearing structure and position, aquifer at the angle of pitch of conduit and azimuth; Pre-buried conduit by around the collecting well machine nest is drilled with and passes through the controlled directional diafiltration hole of basement rock stratum until the degree of depth＞100m of sand pebble layer, determines that according to water-bearing structure position and orientation, aquifer controlled directional diafiltration hole is straight or crooked; In the water position of product on the way in controlled directional diafiltration hole and nose end aquifer, be provided with strainer.
In the engineering structures of diafiltration method for fetching water of the present invention is constructed, realization is crept into boring mechanic fully in controlled directional diafiltration hole, on complete basement rock stratum with owe all can implement in the complete basement rock stratum probing in controlled directional diafiltration hole, add when implementing the creeping into of controlled directional diafiltration hole put different azimuth and deflection angle whipstock to any direction bending.The so-called complete basement rock stratum of owing comprises severely-weathered layer, structure zone of fracture and half consolidated formation; To owing complete basement rock stratum when implementing controlled directional diafiltration hole drill and visiting, adopt synchronously with Manifold technology, with tubing with the progress of the creeping into retaining wall pore-forming that follows up synchronously; In order to overcome strata pressure and to follow friction around pipe resistance in the pipe process, require to follow pipe bit to the greatest extent again by the wheel reduced bore, the every drilling depth of taking turns in single footpath is not more than 50-100m, the aperture is pressed ф 250, ф 220, ф 194, ф 171, ф 150, ф 130, ф 110 and ф 91mm in regular turn, and so round is up to the purpose degree of depth.Complete basement rock stratum is closely knit complete, and pore-creating character is good, creeps into easily, usually complete basement rock stratum is implemented the probing in controlled directional diafiltration hole, need not synchronously with managing and protecting wall, adds centralizer or whipstock with the air latent drift and creeps into comprehensively and can singly directly bore dark 300-500m.
In engineering structures is constructed, with rig strainer is presented to the water intaking position, come the water section can select bridge filter for use for bedrock fracture, and available our company has applied for the displaced type strainer of utility model patent or the strainer of other type in sand pebble layer.
Pre-buried conduit in collecting well, its borehole wall end mouth of pipe is preferably with flange and tailrace, so that finish by this conduit controlled directional diafiltration hole creep into the inserting of strainer after, earlier temporary transient this conduit of shutoff is treated to seal off after other diafiltration hole all fulfils assignment again and is discharged water into well.
When constructing the engineering structures of diafiltration method for fetching water of the present invention, if need speed up the work, also shaft bottom machine nest can be enlarged, arrange the operation simultaneously of many bench drills machine, loose accumulation horizon of machine-team efficient creeps into and is that 10-20m, basement rock stratum creep into and is 20-40m, can significantly improve the rig operating efficiency like this, thereby reduce engineering cost.
Diafiltration method for fetching water of the present invention is compared with prior art radial and Weeping well with natural filter bed, has following advantage and effect respectively.
1, radial can only be implemented on sand level stratum, and the water intaking radiation length is no more than 50m, and control water bearing ground area is at 8000m
2Below, water withdrawal is limited; And the water intaking radiation length of the inventive method is at basement rock stratum Nei Keda 500m, even farther, and the theoretical area of control water bearing ground can reach 500000m
2More than, so its water-yielding capacity is tens of times of radial, even more than 100 times, its individual well water yield per day generally can reach the 10000-100000 ton, even bigger.
2, Weeping well with natural filter bed, at the bottom of its river all construct under river level and groundwater table in the tunnel, water burst in the lane, to gush the sand phenomenon common, more serious also accidents (repeatedly occurring exposing the great gushing water accident in riverbed in the actual engineering) such as roof fall, gushing water can occur, and the construction safety degree of protection is low; The inventive method is taked controlled directional diafiltration hole on engineering structures, thereby avoided the potential safety hazard in the constructing tunnel at the bottom of the river fully, the drilling operation in the hole of controlled directional diafiltration does not simultaneously need so high to water head site prospecting required precision, self just have both spy, adopt two big functions.
3, constructing tunnel is only operation at the bottom of the river of Weeping well with natural filter bed, and the scope of operation is little, mechanization degree is low, inefficiency, and as if the engineering quantity by tunnel and 20-25 seepage flow hole thereof at the bottom of its 500m the Changjiang river, the normal duration needs 11-13 month; And the 20-25 of the inventive method controlled directional diafiltration hole can be satisfied equal control area fully, only is 8-10 month with the separate unit normal duration of rig only, if arrange the parallel operations of many bench drills machine, the duration shortens at double.
4, if by norm by (2 * 2m net section) workload of tunnel at the bottom of the 500m the Changjiang river and existing municipal capital construction, contain all actions such as driving, temporary lining, permanent support, a large amount of construction drainage, technology measure, close every linear meter(lin.m.) engineering cost 6000-9000 unit, gross investment will reach ten thousand yuan of 300-450; According to the 3rd page of State Planning Commission, the Ministry of Construction " engineering investigation design standard of charge " (2002), " hydrogeology prospecting " class construction machine-team takes only 1680 yuan, and the 20-25 of the inventive method controlled directional diafiltration hole drill visited to take and only be ten thousand yuan of 120-150; Equivalence is compared, and the inventive method has significant techno-economic effect.
In a word, diafiltration method for fetching water of the present invention, make full use of the natural filtration on stratum and the efficient drilling condition in the basement rock stratum, adopt the underground water that engineering structures is got of the inventive method generally not need to handle through water manufacturing system again, have that engineer construction is simple, the construction investment in early stage economizes, later stage running cost is low, construction safety, do not destroy ecological environment, not influenced by disaster, plurality of advantages such as the water quality and quantity of water intaking is stable.
Four, description of drawings
Fig. 1 is for using diafiltration method for fetching water of the present invention, and choosing is built in a practical example structural representation of Ming River limit bank.
Fig. 2 is for using the inventive method, and choosing is built in a practical example structural representation of river bank, Daning bank;
Fig. 3 is for using the inventive method, from the engineering structures schematic diagram of special filter bed deep trouth water intaking;
Fig. 4 is for using the inventive method, from the engineering structures schematic diagram of opposite bank filter bed water intaking.
Among the figure: the b-sand pebble layer c-bedrock fracture of 4-tubing 5-strainer 6-pump house 7-machine nest a-basement rock stratum, 1-collecting well 2-conduit 3-controlled directional diafiltration hole
Five, the specific embodiment
Specify the engineering structures of diafiltration method for fetching water of the present invention with embodiment below in conjunction with accompanying drawing.
1, embodiment 1
Choosing is built in the diafiltration water intake engineering structure example of the present invention (Fig. 1) of Ming River limit bank.
Collecting well 1 passes loose accumulation horizon and constructs in a of the basement rock stratum of Ming River limit bank, has machine nest 7 in nearly shaft bottom, all pre-buried controlled directional diafiltrations of nest hole conduit 2, and pre-buried angle, the orientation of conduit calculated definite in advance.Because basement rock a owes complete, execute brill controlled directional diafiltration hole 3 by conduit 2 usefulness rigs, can follow synchronously into tubing 4 with progress, 4 of tubing can be the drainage floral tubes according to water intaking needs and water intaking position.Each takes turns the synchronous follow-up degree of depth 40-50m tubing 4, and by rotating little one-level drilling tool and tubing, row is visited with pipe bit synchronously more then, and circulation so in regular turn is up to being drilled into desired depth.4 drainages of tubing, guard aperture and guiding triple role, for reaching the drainage effect, the eyelet of its tubing or strainer optional garden shape or strip, eye are directly then definite according to the water bearing ground grain diameter.For preventing that silt particle is advanced in the hole certainly from nose end, generally squeezes into stopper or placement filter device 5, to guarantee water quality requirement in its end.Underground water enters in the hole by tubing 4 and strainer 5, and causes in the well and compile, but the general flange by conduit mouth and the tailrace shutoff of going ahead of the rest in the work progress in other hole is treated to discharge water into well after all finish in other diafiltration hole 3 again.This routine engineering is laid altogether and is implemented 38m of vertical shaft, 15 in controlled directional diafiltration hole (minimum hole depth 240m, maximum hole depth 510m all are inclined hole), and a day water-yielding capacity is 43300 tons, has satisfied the water intaking effect of expection fully.The diafiltration water intake engineering structure of this routine type is applicable to the plains region of network of rivers growth or the rivers offshore zone that sand pebble layer b overbank is grown.
2, embodiment 2
Choosing is built in the diafiltration water intake engineering structure example of the present invention (Fig. 2) of river bank, Daning bank
Collecting well 1 is built in river bank, Daning bank, passes loose accumulation horizon the shaft bottom is embedded basement rock a34m (total well depth 46m).Sand pebble layer b has arranged the controlled directional diafiltration holes 3 of 12 fannings of two rows under shaft bottom 2m and the 3m directive river bed respectively, and hole depth 320-480m does not wait, control sand pebble layer b area 54000m
2Because rock quality layer probing pore-forming condition is good, how to adopt to follow synchronously and manage and protect wall, not make reducing yet and handle, drilling technology is more simple.Earlier strainer 5 is disposed into sand pebble layer behind the pore-forming, according to the position of the different water outlets of bedrock fracture c on the way strainer 5 diafiltrations picked-up underground water is installed respectively then again, and import in the well by diafiltration hole 3 from nose end.Part, basement rock stratum more broken hole section such as severely-weathered layer, this routine diafiltration hole has also taked to follow the Manifold technology retaining wall synchronously, but generally all need not to take the reducing treatment measures.The eyelet eye of strainer 5 directly waits and requires still to determine according to moisture sand pebble layer grain composition.Each diafiltration hole all is provided with conduit 2 and the blue control device of mouth of pipe valve earlier, and its effect and operation are all with embodiment 1.Construct altogether 12 in controlled directional diafiltration hole of present embodiment, 36300 tons of day water-yielding capacities, work progress and final effect all reach the expection imagination.This routine engineering structures is grown the thin mountain stream area utmost point at sand pebble layer applied value and dissemination.
Claims (4)
1, a kind of diafiltration method for fetching water, the engineering structures of constructing includes pumping plant, collecting well, it is characterized in that:
1) collecting well choosing is built in the tax water tectonic province that underground water grows or the rivers limit bank that enriches the underground water supply source is arranged, and hole diameter, well depth decide according to on-the-spot physical condition and water intaking scale, and 5m at least in the embedding basement rock stratum, shaft bottom of collecting well is provided with the machine nest in the shaft bottom; Lay around the machine nest and be embedded with many conduits, decide according to underground water-bearing structure and position, aquifer at the angle of pitch of conduit and azimuth;
2) by the pre-buried conduit around the collecting well machine nest, be drilled with and pass through the controlled directional diafiltration hole of basement rock stratum, determine that according to water-bearing structure position and orientation, aquifer controlled directional diafiltration hole is straight or crooked until the degree of depth＞100m of sand pebble layer;
3) in the water position of product on the way in controlled directional diafiltration hole and nose end aquifer, be provided with strainer.
2, according to the described diafiltration method for fetching water of claim 1, it is characterized in that controlled directional diafiltration hole with boring mechanic at complete basement rock or owe to creep in the complete basement rock stratum, add the whipstock of putting different azimuth and deflection angle when implementing the creeping into of controlled directional diafiltration hole and realize to any direction bending.
3, get method for fetching water according to claim 1 or 2 described diafiltrations, it is characterized in that the said complete basement rock stratum of owing comprises severely-weathered layer, structure zone of fracture and half consolidated formation, when visiting to owing complete basement rock stratum enforcement controlled directional diafiltration hole drill, adopt synchronously with Manifold technology, with tubing with the progress of the creeping into retaining wall pore-forming that follows up synchronously; In order to overcome strata pressure and to follow friction around pipe resistance in the pipe process, require to follow pipe bit to advance again by the wheel reduced bore, the every drilling depth of taking turns in single footpath is not more than 50-100m, the aperture is pressed φ 250, φ 220, φ 194, φ 171, φ 150, φ 130, φ 110 and φ 91mm in regular turn, and so round is up to the purpose degree of depth.
4,, it is characterized in that coming the water section to select bridge filter for use, and in sand pebble layer, use displaced type strainer or other type filter for bedrock fracture according to the described diafiltration method for fetching water of claim 1; Strainer is presented to the water intaking position with rig.
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| CN 03135401 CN1239791C (en) | 2003-07-11 | 2003-07-11 | Percolation water intaking method of new engineering structure |
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| CN 03135401 CN1239791C (en) | 2003-07-11 | 2003-07-11 | Percolation water intaking method of new engineering structure |
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| CN1239791C true CN1239791C (en) | 2006-02-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191792A (en) * | 2011-04-18 | 2011-09-21 | 中国葛洲坝集团股份有限公司 | Low-cost water preparation system for construction of hydraulic and hydro-power engineering |
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| CN102587449A (en) * | 2012-04-10 | 2012-07-18 | 云南通洁环保成套设备工程有限公司 | Method and device for collecting rainwater |
| CN102776914A (en) * | 2012-07-25 | 2012-11-14 | 江苏望远节能科技开发有限公司 | Level permeation tube water taking device |
| CN102966083A (en) * | 2012-11-30 | 2013-03-13 | 中国科学院东北地理与农业生态研究所 | Ecological ditch constructing method for controlling nitrogen and phosphorus in farmland drainage |
| CN103241900B (en) * | 2013-05-20 | 2014-06-18 | 宁夏祥河生态环境工程研究院有限公司 | Treatment system for percolating and filtering rural domestic sewage by excavating land in minimally invasive mode |
| CN104695506A (en) * | 2014-11-21 | 2015-06-10 | 马玉欣 | Ground surface sunken submerged filter tank infiltrating water intake method and system |
| CN105350608A (en) * | 2015-12-01 | 2016-02-24 | 广西捷佳润农业科技有限公司 | Method for adopting submersible pump to pump water from low-water-level river |
| CN105804155B (en) * | 2016-03-20 | 2018-08-24 | 西北大学 | A kind of method of Arid＆semi-arid area influent well water intaking |
| CN106351286A (en) * | 2016-10-17 | 2017-01-25 | 重庆大学 | Coral reef sand underground freshwater reserving and using method |
| CN106639986A (en) * | 2016-12-13 | 2017-05-10 | 罗逍 | Method for getting water in desert |
| CN106968712B (en) * | 2017-05-12 | 2023-06-09 | 西南交通大学 | Tunnel bottom drainage structure of water-rich stratum and construction method thereof |
-
2003
- 2003-07-11 CN CN 03135401 patent/CN1239791C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191792A (en) * | 2011-04-18 | 2011-09-21 | 中国葛洲坝集团股份有限公司 | Low-cost water preparation system for construction of hydraulic and hydro-power engineering |
| CN102191792B (en) * | 2011-04-18 | 2013-05-22 | 中国葛洲坝集团股份有限公司 | Low-cost water preparation system for construction of hydraulic and hydro-power engineering |
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Effective date of registration: 20160704 Address after: 401147, Longshan Road, Longshan Road, Chongqing, Yubei District, No. 6, Mao Mao Shengshi, Beichen 5 11- writing room 6 Patentee after: CHONGQING HONGYUAN SEEPAGE WATER INTAKE TECHNOLOGY CO.,LTD. Address before: 401147 No. 92 Jinlong Road, Longxi street, Chongqing, Yubei District Patentee before: Chongqing Percolation Water Intaking Engineering Co.,Ltd. |
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