CN103243776A - Construction method for radial water collecting well provided with wire-wrapping filter - Google Patents
Construction method for radial water collecting well provided with wire-wrapping filter Download PDFInfo
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- CN103243776A CN103243776A CN2012100584422A CN201210058442A CN103243776A CN 103243776 A CN103243776 A CN 103243776A CN 2012100584422 A CN2012100584422 A CN 2012100584422A CN 201210058442 A CN201210058442 A CN 201210058442A CN 103243776 A CN103243776 A CN 103243776A
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- outer tube
- pit shaft
- boring
- drilling
- drill bit
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Abstract
The invention provides a construction method for a radial water collecting well provided with a wire-wrapping filter. The construction method comprises the following steps: (a) a double-layer drill type drilling machine is driven to carry out the drilling operation, wherein the double-layer drill type drilling machine is provided with a drilling outer tube and a drilling rod. The drilling outer tube is arranged to pass through the side wall of a shaft and is provided with an outer drill bit positioned at the front end portion thereof. The drilling rod inserted into the drilling outer tube is accommodated in a drawable manner and is provided with an inner drill bit positioned at the front end portion thereof. (b) the drilling outer tube is retained and then the drilling rod is pulled or pushed at the same time; (c) an outer shell tube is inserted into the drilling outer tube; (d) the drilling outer tube is pulled or pushed; (e) the predetermined angle of the double-layer drill type drilling machine is varied along the horizontal direction; the above steps (a)-(d) are performed repeatedly.
Description
Technical field
The present invention relates to the job practices of radial collecting well, relate in particular to the job practices of the radial collecting well that has used the coiling strainer, described radial collecting well is the phreatic water intake well based on phreatic water (underflow water).
Background technology
In phreatic water intaking, the method as mainly phreatic water (underflow water) being fetched water has shallow well.Under the situation of utilizing a large amount of water intakings of shallow well, though the method that increases the well head diameter is arranged, can be subjected to the restriction of land used, building building key element.
As prior art, have from pit shaft header (iron tube having holes) by squeezing into worker's method with the radial collecting well of radial laying, it can realize increasing in fact the effect of well diameter, thereby can obtain the water intaking performance equal with the heavy caliber well.When in this radial collecting well, laying header, to have the iron tube having holes that can tolerate the intensity of squeezing into worker's method and (steel pipe implemented perforation processing, about percent opening 12%) from the pit shaft of concrete system (approximately more than the φ 2.5m, in order to fastener driving device can be set) squeeze into radial by squeezing into worker's method, thus become radial collecting well structure.As an one example, the worker's method that has patent documentation 1 to put down in writing.
Patent documentation 1: the clear 55-44936 of Japanese Utility Model communique
The problems of the prior art are to have following situation, that is: in the shallow well that with the phreatic water is the water intaking object, stratum as the aquifer is run gravel layer and grit alluvium mostly, void content is about 30～35%, with respect to this, the aperture opening ratio of iron tube having holes (about 12%) is low, and the inflow velocity of water is fast when causing catchmenting, consequently, can produce and catchment resistance and increase well resistance.As solution, expected laying the coiling strainer with aperture opening ratio higher than the void content in aquifer (30～60%) the physical property loss has been suppressed to be minimum method, but, the coiling strainer textural do not have can tolerate the intensity of squeezing into worker's method.
In addition, in squeezing into worker's method, exist in and squeeze into the unsteady phenomenon that header takes place because of frictional resistance or admant etc. when advancing, also there is obstruction because of megalith firmly etc. to become to have to the example of abandoning the situation squeezed into midway, thereby the construction that exists the laying that to realize a plan exactly to prolong, but, still do not have the reply way.
Summary of the invention
The present invention makes in view of the existing problem points of the above-mentioned existing worker's of squeezing into method just, and it provides a kind of coiling strainer that uses high aperture and low inflow velocity to lay the new job practices of radial collecting well.
The present inventor is in order to address the above problem repeatedly research and experiment with keen determination, found: the boring outer tube that will in the past be used for the double-deck drill bit type auger of deep-well excavation and anchoring construction etc. inserts the shell of usefulness as the coiling strainer, do not need other special devices and machine material just can use the construction of the radial collecting well of coiling strainer thus, thereby reach the present invention.
The present invention is a kind of job practices of radial collecting well, to use the header of many coiling strainers that are communicated with pit shaft to be embedded in the aquifer with radial from pit shaft, thereby the underground water that flows into each header is catchmented in pit shaft for drawing water, and described job practices comprises following operation:
(a) to lay the predetermined underground position of 1 header, the operation that makes double-deck drill bit type auger action and only hole with the length of regulation, wherein, described double-deck drill bit type auger has: boring outer tube, run through the sidewall of pit shaft and drill bit outside leading section has; Boring bar is inserted in this boring outer tube, and is contained in mode that can drawing, and has interior drill bit at leading section;
(b) after boring is finished, boring outer tube is stayed and the operation of boring bar being carried out drawing;
(c) display pipe only is inserted in the operation that remains in the space in the underground boring outer tube with predetermined length, wherein, described display pipe is to form by the rearward end that pipe is connected the coiling strainer, described pipe have will be from the water that collects of coiling strainer to pit shaft in the function of water guide, and be used for applying necessary thrust so that the coiling strainer inserts;
(d) after display pipe inserts, display pipe is stayed and the operation of boring outer tube being carried out drawing;
(e) after the operation of described (a)～(d) is finished, make the angle of auger only change the operation that predetermined angular also carries out described (a)～(d) repeatedly in the horizontal direction.
In a side of the present invention, pit shaft is the pit shaft of newly establishing.
In another side of the present invention, pit shaft is existing pit shaft.
In another side of the present invention, a kind of radial collecting well that uses the coiling strainer is provided, it is constructed by job practices of the present invention.
The invention effect
According to the present invention, can lay as header and have the coiling strainer that high function still can't be laid with the problem on the cause structure (intensity), thereby can realize the radial collecting well of big aperture opening ratio, low inflow velocity, and can eliminate the existing construction of the existing worker's of squeezing into method and reach incomplete factor.
That is, no matter formation condition and header intensity how, can both positively be laid construction to the header laying of radial collecting well.
In addition, because the coiling strainer of high aperture is used for the header that radial collecting well adopts, so can alleviate the resistance that catchments, realize water and the structure of well efficient height (head loss few=well resistance is low).
In addition, owing to not only can positively build new well that can the high efficiency water intaking, can also be applied to the existing well bore of usage mining machine (must have can), so for the well facility that the performance deficiency maybe can't be used, can carry out the function reparation or obtain more substantial water intaking performance.In the transformation to existing well, can effectively utilize the major part of existing utility, but also can obtain aspect physics, also high efficient and effect of cost aspect.
Moreover, according to the present invention, can realize laying prolongation by certain plan that the worker's method of squeezing in the past can't be carried out.
Description of drawings
Fig. 1 is the key diagram that schematically shows the part of job practices of the present invention.
Fig. 2 is the key diagram that schematically shows the part of job practices of the present invention.
Fig. 3 is the concise and to the point vertical view of the completed radial collecting well of expression.
The explanation of Reference numeral
1 double-deck drill bit type auger
2 boring outer tubes
3 boring bars
4 outer drill bits
Drill bit in 5
6 pit shaft sidewalls
Space in the 7 boring outer tubes
8 display pipes
9 coiling strainers
10 pipes
20 pit shafts
30 headers
The specific embodiment
Below, with reference to description of drawings preferred embodiment of the present invention.
Fig. 1 and Fig. 2 are the key diagrams of an embodiment of the job practices of the expression radial collecting well that has used the coiling strainer of the present invention, are the concise and to the point sectional views of representing the state that the sidewall of pit shaft and boring, screen casing are laid by the process sequence of construction.
Shown in Fig. 1 (1), operation in the job practices of the present invention (a) is such operation: lay the predetermined underground position of 1 header, make double-deck drill bit type auger 1 action and the only length boring to be scheduled to, wherein, described double-deck drill bit type auger 1 has: boring outer tube 2, it is used for running through the sidewall 6 of pit shaft 20 (Fig. 3), and outside leading section is equipped with drill bit 4; With boring bar 3, be inserted in this boring outer tube 2, and be contained in mode that can drawing, and in leading section is equipped with drill bit 5.Fig. 1 (1) is the figure of the state in the expression boring way, and Fig. 1 (2) is the figure of the state of the expression boring of having finished predetermined length.
As double-deck drill bit type auger, can adopt the rotary impact type auger of the hydraulic driving mode that in deep-well excavation, anchoring engineering, uses, the down-the-hole auger (common name: pneumatic hammer) of air pressure type of drive.These augers all are known machinery.These augers all are at the leading section of boring outer tube 2 the outer drill bit 4 that the object domain of will holing is drilled to the boring point of a knife of conduct of ring-type to be installed, and at the leading section of boring bar 3 the interior drill bit 5 that boring object domain is carried out drilling in whole cross section are installed.The detailed construction of these outer drill bits 4, interior drill bit 5 is known.Boring bar 3 is incorporated in the boring outer tube 2 in mode that can drawing, and the front end of boring outer tube 2 is open.
Shown in Fig. 1 (3), the operation in the method for the present invention (b) is boring outer tube 2 to be stayed in the ground with keeping intact and operation that boring bar 3 is carried out drawing.
Shown in Fig. 2 (4), operation in the method for the present invention (c) is such operation: after boring bar 3 drawings are gone out, display pipe 8 only is inserted in the space 7 in the boring outer tube stayed in the ground 2 with the length of regulation, described display pipe 8 is to form by the rearward end tube connector 10 at coiling strainer 9, described pipe 10 have will be from the water that collects of coiling strainer to pit shaft in the function of water guide, and be used for applying necessary thrust with the strainer insertion that will wind the line.As the method for attachment of coiling strainer 9 with pipe 10, there is no particular limitation, can be by and manage that 10 leading section cuts out screw thread respectively and a side being screwed into the opposing party at the edge of the rearward end of coiling strainer 9 and being connected simply.In addition, coiling strainer 9 and pipe 10 are cut apart under the situation about using having to because of the restriction of machinery or working space, method of attachment also is same.As pipe 10, use non-perforated pipe to get final product, also the whole casing pipe can be omitted pipe 10 as the coiling strainer.In the time display pipe 8 will being inserted into the space 7 of boring in the outer tube 2, utilize the propulsion functions of double-deck drill bit type auger 1, make boring bar 3 interior drill bit front end or interior drill bit is replaced as the rear end that structure that insertion forms with instrument is against display pipe 8, and boring bar 3 is advanced, thereby display pipe 8 can be inserted in the space 7.Thus, can coiling strainer 9 not applied the laying of finishing predetermined length under the situation of squeezing into the load of (pushing direction) intensity.
Shown in Fig. 2 (5), the operation in the method for the present invention (d) is, after display pipe 8 inserts, display pipe 8 stayed in the ground with keeping intact and operation that boring outer tube 2 is carried out drawing.In addition, shown in Fig. 2 (6), after operation (d) was finished, installation was used for the gap sealed parts 12 between the sidewall 6 of display pipe 8 and pit shaft 20 (Fig. 3) sometimes.
In addition, though for job practices of the present invention operation not necessarily, can be as required, shown in Fig. 2 (6), the water sealing part 13 (valve, plug) that interim sealing is used in the pit shaft side oral area 11 of display pipe 8 is installed as construction.
Operation in the method for the present invention (e) is to make the angle of auger only change the angle of regulation in the horizontal direction after the operation of described (a)～(d) finishes, and carry out the operation of described (a)～(d) repeatedly.Thus, can be shown in the vertical view of Fig. 3, the header 30 that will stipulate radical (for example 24) from pit shaft 20 with radial laying.
Claims (4)
1. the job practices of a radial collecting well, to use the header of many coiling strainers that are communicated with pit shaft to be embedded in the aquifer with radial from pit shaft, thereby the underground water that flows into each header is catchmented in pit shaft for drawing water, and described job practices comprises following operation:
(a) to lay the predetermined underground position of 1 header, the operation that makes double-deck drill bit type auger action and only hole with the length of regulation, wherein, described double-deck drill bit type auger has: boring outer tube, run through the sidewall of pit shaft and drill bit outside leading section has; Boring bar is inserted in this boring outer tube, and is contained in mode that can drawing, and has interior drill bit at leading section;
(b) after boring is finished, boring outer tube is stayed and the operation of boring bar being carried out drawing;
(c) display pipe only is inserted in the operation that remains in the space in the underground boring outer tube with predetermined length, wherein, described display pipe is to form by the rearward end that pipe is connected the coiling strainer, described pipe have will be from the water that collects of coiling strainer to pit shaft in the function of water guide, and be used for applying necessary thrust so that the coiling strainer inserts;
(d) after display pipe inserts, display pipe is stayed and the operation of boring outer tube being carried out drawing;
(e) after the operation of described (a)～(d) is finished, make the angle of auger only change the operation that predetermined angular also carries out described (a)～(d) repeatedly in the horizontal direction.
2. job practices as claimed in claim 1 is characterized in that,
Described pit shaft is the pit shaft of newly establishing.
3. job practices as claimed in claim 1 is characterized in that,
Described pit shaft is existing pit shaft.
4. a radial collecting well that uses the coiling strainer is characterized in that, constructs by the described job practices of claim 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-029132 | 2012-02-14 | ||
| JP2012029132A JP2013167051A (en) | 2012-02-14 | 2012-02-14 | Construction method for radial catchment well using coil screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103243776A true CN103243776A (en) | 2013-08-14 |
Family
ID=48923628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100584422A Pending CN103243776A (en) | 2012-02-14 | 2012-03-06 | Construction method for radial water collecting well provided with wire-wrapping filter |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2013167051A (en) |
| CN (1) | CN103243776A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6479721B2 (en) * | 2016-08-30 | 2019-03-06 | 三公通商株式会社 | Underground water power generator and power generation method using underground water |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1054463A (en) * | 1991-02-13 | 1991-09-11 | 北京大兴地基工程公司 | Radial that foundation dewatering is used and construction technology and equipment |
| WO1996002705A1 (en) * | 1994-07-15 | 1996-02-01 | Wci - Umwelttechnik Gmbh | Permeable treatment bed for use in purifying contaminated ground water streams in situ |
| JP2008038412A (en) * | 2006-08-03 | 2008-02-21 | Asia:Kk | Well apparatus |
| EP1970527A2 (en) * | 2007-03-10 | 2008-09-17 | Stüwa Konrad Stükerjürgen GmbH | Steel pipe with a filter zone for bore wells |
| CN101424087B (en) * | 2007-10-31 | 2010-08-18 | 中国科学院寒区旱区环境与工程研究所 | Insulation and collecting well |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0689558B2 (en) * | 1990-10-19 | 1994-11-09 | 日本綜合建設株式会社 | Water collecting well and lateral well construction method for water collecting well |
| JP2001090475A (en) * | 1999-09-21 | 2001-04-03 | East Japan Railway Co | Underground member laying method, tow member laid position correcting method, and apparatus for correcting the same |
| JP3926275B2 (en) * | 2003-01-29 | 2007-06-06 | 東京瓦斯株式会社 | One-push propulsion tool, one-push propulsion method and pipe laying method |
| JP3821808B2 (en) * | 2003-09-17 | 2006-09-13 | 株式会社アステル・ウエル | Construction method of water collecting device |
| JP2005105600A (en) * | 2003-09-29 | 2005-04-21 | Asia:Kk | Catchment pipe device of radial catchment well |
-
2012
- 2012-02-14 JP JP2012029132A patent/JP2013167051A/en active Pending
- 2012-03-06 CN CN2012100584422A patent/CN103243776A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1054463A (en) * | 1991-02-13 | 1991-09-11 | 北京大兴地基工程公司 | Radial that foundation dewatering is used and construction technology and equipment |
| WO1996002705A1 (en) * | 1994-07-15 | 1996-02-01 | Wci - Umwelttechnik Gmbh | Permeable treatment bed for use in purifying contaminated ground water streams in situ |
| JP2008038412A (en) * | 2006-08-03 | 2008-02-21 | Asia:Kk | Well apparatus |
| EP1970527A2 (en) * | 2007-03-10 | 2008-09-17 | Stüwa Konrad Stükerjürgen GmbH | Steel pipe with a filter zone for bore wells |
| CN101424087B (en) * | 2007-10-31 | 2010-08-18 | 中国科学院寒区旱区环境与工程研究所 | Insulation and collecting well |
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| Publication number | Publication date |
|---|---|
| JP2013167051A (en) | 2013-08-29 |
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Application publication date: 20130814 |