CN105133564A - Construction method for building sediment storage dam through hung-bag-shaped high vertical type sediment retaining net - Google Patents
Construction method for building sediment storage dam through hung-bag-shaped high vertical type sediment retaining net Download PDFInfo
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- CN105133564A CN105133564A CN201510413935.7A CN201510413935A CN105133564A CN 105133564 A CN105133564 A CN 105133564A CN 201510413935 A CN201510413935 A CN 201510413935A CN 105133564 A CN105133564 A CN 105133564A
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Abstract
The invention relates to the technical field of desertification control projects, and in particular to a construction method for building a sediment storage dam through a hung-bag-shaped high vertical type sediment retaining net. The method includes the steps that in the direction perpendicular to the main wind direction, on a desert, and the sediment storage dam is piled and built through a loading machine, wherein the sediment storage dam is 90-250 cm high, and the top of the sediment storage dam is flattened into a platform 50-200 cm wide; a groove along the central line of the platform on the top of the sediment storage dam is excavated; sediment retaining nets with the width between 100 cm and 350 cm are selected according to the width of the groove; the sediment retaining nets are laid along the groove; wood strips with the length between 70 cm and 230 cm are selected to be fixed into the groove and used as supports; the supports are constructed in the groove where the sediment retaining nets are laid according to the interval of 1 m to 2 m; nearby desert sand is taken to be pressed on the sediment retaining nets, and the groove is filled with the desert sand; then, the sediment retaining nets on the two sides of the groove are lifted up; the top edges incline towards the tops of the supports and are fixedly connected with the tops of the supports; and the hung-bag-shaped high vertical type sediment retaining net is built on the top of the sediment storage dam.
Description
Technical field
The present invention relates to sand control engineering technical field, be specially the construction method that check dam constructed by outstanding bag shape high vertical sediment trapping net.
Background technology
At present, in desert treatment, widely use plastic wire construction high vertical sediment trapping net, enforcement is to the interception in flowing desert and fix, but above-mentioned high vertical sediment trapping net due to vertical wire side when the invasion and attack suffering strong wind not only wire side easily blown brokenly, the wind stopped changes over upper and lower vertical direction from horizontal direction, the sand of wind meeting erosion sediment trapping sieve bottom vertically downward, make sediment trapping sieve bottom unsettled, construction is just very unstable on desert, therefore inventing a kind of method that check dam constructed by outstanding bag shape high vertical sediment trapping net, has been the needs of control of desert.
Applicant has delivered " the fixing and utilizations of moving dunes " in 2009.In article, set forth the principle on splayed net cage sand barrier fixed flow sand dune, illustrate simultaneously after moving dunes top arranges splayed net cage sand barrier, due to husky toward eminence properties of flow, tall and big moving dunes just become tall and big machinery and hinder less.Therefore the mechanical sand barrier on textbook is hindered husky effect formula V=4.5H
2sima (formula 1), is modified as V=4.5 [H+ [(H1+H2)/2]
2sima (formula 2), in (formula 1), V is the husky amount of resistance, and H is the height of mechanical sand barrier, and a is the angle of cut.In (formula 2), V is the husky amount of resistance, and H is the height of mechanical sand barrier, and H1 is the height of moving dunes windward slope, and H2 is the height of moving dunes leeward slope, and a is the angle of cut.The top of exposing moving dunes due to splayed net cage sand barrier is less than 15cm, if apply mechanically the formula on textbook, be placed in the splayed net cage sand barrier at moving dunes top, it is very little for hindering husky effect, but in fact expose the splayed net cage sand barrier that top of sand dune is less than 15cm, owing to there being the moving dunes under cylinder mould sand barrier to make liner, it hinders husky effect far away higher than being arranged on smooth desert, being highly greater than the high vertical sediment trapping net of 150cm.Therefore (formula 1) husky effect of resistance of arranging Eight characters cylinder mould sand barrier in moving dunes top to constructing is inapplicable, just can must describe the problem with (formula 2).After moving dunes top arranges splayed net cage sand barrier, top of sand dune is deposited in by the drift sand that splayed net cage sand barrier is tackled, by promoting splayed net cage sand barrier, make the upwards lifting of moving dunes top, moving dunes just no longer move forward, harmful moving dunes just become useful mechanical sand barrier, the mechanical sand barrier of height like this, cannot accomplish with the high vertical sediment trapping net that any method builds, thus show moving dunes efficient intercepting desert function, but the mechanical sand barrier be so efficiently easy to get on desert, also be not familiar with by people at present, so far fail to find correlation theory and experimental data in textbook.What textbook was introduced is waist high vertical sediment trapping net being arranged on moving dunes, and reach the object of scabbling moving dunes, people still process moving dunes as disaster so far.So applicant is managing by engineering practice, proving that moving dunes to be transformed into tall and big mechanical sand barrier.
The construction method of check dam constructed by outstanding bag shape high vertical sediment trapping net, that applicant fixes from construction splayed net cage sand barrier the construction method exploring out moving dunes engineering practice, outstanding bag shape high vertical sediment trapping net is constructed the check dam top constructed by loader, stablize than splayed net cage sand barrier, highly splayed net cage sand barrier can be exceeded, therefore sediment trapping, sand-fixing effect are better than splayed net cage sand barrier, because the bottom of outstanding bag shape high vertical sediment trapping net has been filled at the bottom of husky bag, weather-proof effective, can not be blown down by the base erosion of strong wind from net.
Summary of the invention
The technical assignment of the technical problem to be solved in the present invention and proposition is the defect overcoming prior art, the constructing structure of existing high vertical sediment trapping net, hang as curtain from single width, change over the outstanding bag shape high vertical sediment trapping net like being equipped with the mesh bag shape that Desert Sand hangs up at the bottom of bag, outstanding bag shape high vertical sediment trapping net changes the structure of traditional high vertical sediment trapping net, sediment trapping netting gear is made to have two wire sides tilted, drift sand interception in desert can be fixed on the middle both sides, front and back with netting of two wire sides of outstanding bag shape high vertical sediment trapping net, bottom due to sediment trapping net has been filled at the bottom of husky mesh bag, strong wind can not produce erosion to the base of sediment trapping net, be applicable to very much construction at the top of check dam, reach the object in intercepting desert.
Sediment trapping net of the present invention be wide cut between 120cm to 350cm, the plastic wire of degree of porosity between 45% to 55%.The cross sectional shape of outstanding bag shape high vertical sediment trapping net is that the outstanding bag shape that Desert Sand hangs up is housed at the bottom of mesh bag bag, the position of sediment trapping net support is in the center of outstanding bag shape sediment trapping net, the bottom of sediment trapping net support is fixed in desert with passing the bottom vertical of outstanding bag shape sediment trapping net, interval 1m to 2m is equipped with a support, and connection is tightened by an iron wire in the top one by one between support; The top margin of cradle top and outstanding bag shape sediment trapping net is fixed, and the top margin interval 30cm to 50cm of sediment trapping net and iron wire connection are fixed.
The construction method that check dam constructed by outstanding bag shape high vertical sediment trapping net is: direction vertical with prevailing wind direction on desert, one height is erected at 90cm to 250cm, the windward slope gradient is less than 32 ° of angles, top horizontal is made into wide 50cm to 200cm platform check dam with loader heap, center line along check dam top platform digs Yi Tiaogou, the width of ditch is between 30cm to 70cm, and the degree of depth is between 15cm to 50cm; According to width and the sediment trapping net of degree of depth selection wide cut between 100cm to 350cm of ditch, sediment trapping net is spread out and put on along ditch, the center line of sediment trapping net is corresponding with bottom of trench, get the batten of length between 70cm to 230cm by sediment trapping net press-in bottom of trench, batten inserts in the sand of bottom of trench after vertically piercing through sediment trapping net, the batten degree of depth in insertion sand, between 30cm to 70cm, is fixed on batten in ditch, becomes the support of outstanding bag shape high vertical sediment trapping net; In the ditch of having spread out and put on sediment trapping net, interval 1m to 2m constructs a support, and one by one between support, connection is tightened by an iron wire in top, to strengthen the stability of support left and right directions; Desert Sand near getting is pressed in sediment trapping and on the net ditch is filled up, then the top margin tendency cradle top sediment trapping net of ditch both sides is upwards propped up, tighten, netted and and cradle top connection fixing, interval 30cm to 50cm fixes the top margin of both sides sediment trapping net and iron wire connection again, outstanding bag shape high vertical sediment trapping net is built into, height unrestricted choice between 25cm to 150cm of outstanding bag shape high vertical sediment trapping net at the top of check dam.
Accompanying drawing explanation
Fig. 1 is that the present invention is hanged bag shape high vertical sediment trapping net and constructed that the construction of check dam is main looks schematic cross-section.
Fig. 2 is that the present invention is hanged the construction left side that bag shape high vertical sediment trapping net constructs check dam and looked schematic cross-section.
In accompanying drawing, 1, outstanding bag shape high vertical sediment trapping net, 2, sediment trapping net, 3, support, 4, iron wire, 5, check dam, 6, check dam top platform, 7, Desert Sand.
Detailed description of the invention
Now in conjunction with Figure of description, the invention will be further described: sediment trapping net of the present invention be wide cut between 100cm to 350cm, the plastic wire of degree of porosity between 45% to 55%.
As shown in Figure 1 and Figure 2, the construction method that check dam constructed by outstanding bag shape high vertical sediment trapping net is: direction vertical with prevailing wind direction on desert, one height is erected at 90cm to 250cm, the windward slope gradient is less than 32 ° of angles, top horizontal is made into wide 50cm to 200cm platform check dam 5 with loader heap, Yi Tiaogou is dug along check dam top platform 6 state center line, the width of ditch is between 30cm to 70cm, and the degree of depth is between 15cm to 50cm; According to width and the sediment trapping net 2 of degree of depth selection wide cut between 100cm to 350cm of ditch, sediment trapping net is spread out and put on along ditch, the center line of sediment trapping net is corresponding with bottom of trench, get the batten of length between 70cm to 230cm by sediment trapping net press-in bottom of trench, batten inserts in the sand of bottom of trench after vertically piercing through sediment trapping net, the batten degree of depth in insertion sand, between 30cm to 70cm, is fixed on batten in ditch, becomes the support 3 of outstanding bag shape high vertical sediment trapping net; In the ditch of having spread out and put on sediment trapping net, interval 1m to 2m constructs a support, and one by one between support, connection is tightened by an iron wire 4 in top, to strengthen the stability of support left and right directions; Desert Sand 7 near getting is pressed in sediment trapping and on the net ditch is filled up, then the top margin tendency cradle top sediment trapping net of ditch both sides is upwards propped up, tighten, netted and and cradle top connection fixing, interval 30cm to 50cm fixes the top margin of both sides sediment trapping net and iron wire connection again, outstanding bag shape high vertical sediment trapping net 1 is built into, height unrestricted choice between 25cm to 150cm of outstanding bag shape high vertical sediment trapping net at the top of check dam.
Sediment trapping net available mechanicalization of the present invention is produced in enormous quantities, and check dam engineering constructed by outstanding bag shape high vertical sediment trapping net, and available mechanical is constructed on desert.
Claims (1)
1. the construction method of check dam constructed by an outstanding bag shape high vertical sediment trapping net, it is characterized in that: direction vertical with prevailing wind direction on desert, one height is erected at 90cm to 250cm, the windward slope gradient is less than 32 ° of angles, top horizontal is made into wide 50cm to 200cm platform check dam with loader heap, center line along check dam top platform digs Yi Tiaogou, and the width of ditch is between 30cm to 70cm; According to width and the sediment trapping net of degree of depth selection wide cut between 100cm to 350cm of ditch, sediment trapping net is spread out and put on along ditch, the center line of sediment trapping net is corresponding with bottom of trench, get the batten of length between 70cm to 230cm by sediment trapping net press-in bottom of trench, batten inserts in the sand of bottom of trench after vertically piercing through sediment trapping net, the batten degree of depth in insertion sand, between 30cm to 70cm, is fixed on batten in ditch, becomes the support of outstanding bag shape high vertical sediment trapping net; In the ditch of having spread out and put on sediment trapping net, interval 1m to 2m constructs a support, and one by one between support, connection is tightened by an iron wire in top, to strengthen the stability of support left and right directions; Desert Sand near getting is pressed in sediment trapping and on the net ditch is filled up, then the top margin tendency cradle top sediment trapping net of ditch both sides is upwards propped up, tighten, netted and and cradle top connection fixing, interval 30cm to 50cm fixes the top margin of both sides sediment trapping net and iron wire connection again, is built into outstanding bag shape high vertical sediment trapping net at the top of check dam.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310524933.6A CN103556617B (en) | 2013-10-20 | 2013-10-20 | Outstanding bag shape high vertical sediment trapping net and construction method thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310524933.6A Division CN103556617B (en) | 2013-10-20 | 2013-10-20 | Outstanding bag shape high vertical sediment trapping net and construction method thereof |
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| CN105133564A true CN105133564A (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310524933.6A Active CN103556617B (en) | 2013-10-20 | 2013-10-20 | Outstanding bag shape high vertical sediment trapping net and construction method thereof |
| CN201510413934.2A Pending CN105113477A (en) | 2013-10-20 | 2013-10-20 | Construction method using suspension-bag-shaped high vertical sand retaining net to fix wandering dune |
| CN201510413935.7A Pending CN105133564A (en) | 2013-10-20 | 2013-10-20 | Construction method for building sediment storage dam through hung-bag-shaped high vertical type sediment retaining net |
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| CN201310524933.6A Active CN103556617B (en) | 2013-10-20 | 2013-10-20 | Outstanding bag shape high vertical sediment trapping net and construction method thereof |
| CN201510413934.2A Pending CN105113477A (en) | 2013-10-20 | 2013-10-20 | Construction method using suspension-bag-shaped high vertical sand retaining net to fix wandering dune |
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| CN104060600A (en) * | 2014-06-16 | 2014-09-24 | 娄志平 | Overlapped-splicing type sand-blocking net and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101294372A (en) * | 2007-04-27 | 2008-10-29 | 东丽株式会社 | Sand drift prevention method and tubular knit fabric for columnar sandbag |
| CN102373676A (en) * | 2009-05-12 | 2012-03-14 | 娄志平 | High vertical reverse Y-shaped net cage sand barrier and construction method thereof |
| CN102031773A (en) * | 2009-11-24 | 2011-04-27 | 娄志平 | Shirt rim type cylinder mould sand barrier and sand blocking and fixing construction method thereof |
| CN203129121U (en) * | 2013-03-29 | 2013-08-14 | 中国科学院寒区旱区环境与工程研究所 | Windproof sand resistance sand barrier |
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- 2013-10-20 CN CN201310524933.6A patent/CN103556617B/en active Active
- 2013-10-20 CN CN201510413934.2A patent/CN105113477A/en active Pending
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| Publication number | Publication date |
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| CN103556617A (en) | 2014-02-05 |
| CN105113477A (en) | 2015-12-02 |
| CN103556617B (en) | 2016-01-20 |
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Application publication date: 20151209 |