CN101298763B

CN101298763B - Method for closure of dam

Info

Publication number: CN101298763B
Application number: CN200710040361A
Authority: CN
Inventors: 林玉叶; 陆忠民; 熊江平; 秦志明
Original assignee: Shanghai Investigation Design and Research Institute Co Ltd SIDRI
Current assignee: Shanghai Investigation Design and Research Institute Co Ltd SIDRI
Priority date: 2007-04-30
Filing date: 2007-04-30
Publication date: 2010-05-19
Anticipated expiration: 2027-04-30
Also published as: CN101298763A

Abstract

The invention discloses a method for folding a dyke, characterized in that the method uses a primary-secondary bag, the primary-secondary bag comprises a primary bag to which two secondary bags are connected, first of all, the primary bag is filled up to dispose at a folding opening; when folding, the secondary bags are filled up in the first place to be higher than the primary bag for blocking or cutting off upper water stream of the primary bag; flow speed of the water stream on top of the primary bag is reduced and then a mud bag is disposed on the primary bag to fill the sands, afterwards, the empty mud bag is disposed on the filled mud bag and filled with the sands; the mud bags can be sequentially superposed together by repeatedly filling up the mud bags to fold the opening of the dyke. The method of the invention can be applied to folding the dyke.

Description

A kind of method of closure of dam

Technical field

The present invention relates to the method for closure of dam.

Background technology

The corral engineering more often adopts the construction method of the flat stifled closure of filling bag at present.In closure work, by keeping suitable mouth door, when Dang Wei district water level declines to the mouth door weir crest depth of water 0.5m left and right sides with ebb tide, begin artificial water middle berth bag filling construction, because the weir crest flow rate of water flow is general bigger, and must be in a hurry with trend, therefore often difficulty of construction is big, has subject matter:

If flow velocity surpasses 0.5m/s during closure, have a strong impact on bagging laying personnel's construction safety, bagging also is difficult in place, greatly increases closure difficulty and risk;

Cloth bag begins packing stage, and is little than flow action with the frictional resistance of lower floor bagging, and sliding phenomenon often takes place, so usually need to adopt the large scale bagging, affects the closure progress, also uneconomical;

For rapid uplift closure section is cut off the water supply, also normal the employing cut off the water supply with a very fast filling lifting of little filling bag earlier, or elder generation's construction sealing rock mound (being commonly called as the swallow nest) has slowed down a mouthful door weir crest flow velocity before the Longkou, but exists equally, speed of application is slow, uneconomic problem.

Summary of the invention:

The objective of the invention is for a kind of construction safety is provided, speed of application is fast, economic closure method.

For achieving the above object, the present invention has adopted following technical scheme:

A kind of method of closure of dam, it is characterized in that: use a kind of protection composite bag, described protection composite bag comprises a female bag, be connected with two son bags on female bag, at first the filling of mother's bag is placed on the Longkou, elder generation's filling bag during closure, make the son bag be higher than female bag, stop or block the upper current of female bag, reduce female bag top flow rate of water flow, filling mud bag is positioned on female bag is filled into sand, empty mud bag is positioned on the good mud bag of filling again, to be filled into sand in the empty mud bag, repetition filling mud bag can make the mud bag of filling stack up successively the dykes and dams Longkou is joined the two sections of a bridge, etc.

Preferably, described son bag is positioned at female bag both sides, and make son bag and female bag horizontally, the son bag highly is higher than female bag after the filling, at first the filling of mother's bag is placed on the Longkou, and filling bag makes the son bag become concave shape with protection composite bag then, the mud bag is stacked between two son bags is filled into sand, empty mud bag is positioned on the good mud bag of filling, will be filled into sand in the empty mud bag, repetition filling mud bag can make the mud bag of filling stack up successively the dykes and dams Longkou is joined the two sections of a bridge, etc.。

Preferably, described son bag is positioned on female bag, two son bags after the filling become the ridge shape, at first the filling of mother's bag is placed on the Longkou, filling bag makes two son bags become the ridge shape again, the mud bag is positioned between two son bags is filled into sand, empty mud bag is positioned on the good mud bag of filling again, to be filled into sand in the empty mud bag, repetition filling mud bag can make the mud bag of filling stack up successively the dykes and dams Longkou is joined the two sections of a bridge, etc.

Owing to adopted above scheme, the beneficial effect that the present invention is possessed is, son bag after the filling is higher than female bag, can stop or block current, reduce mother's bag top flow rate of water flow, make female bag top stack the easy construction of filling mud bag, safety, quick: the son bag can at first form buffering to current, reduce current washing away filling bag, guarantee workmen's safety, therefore also can improve speed of application, and the closure cost is low.

Description of drawings

Fig. 1 is the protection composite bag structure place schematic diagram in the first embodiment of the invention;

Fig. 2 is the protection composite bag structural representation in the second embodiment of the invention.

The specific embodiment

Below in conjunction with embodiment the present invention is further described.

As shown in Figure 1, a kind of method of closure of dam, it is characterized in that: use a kind of protection composite bag, described protection composite bag comprises a female bag 1, be connected with son bag 2 on female bag 1, described son bag 2 is positioned at female bag 1 both sides, son bag 2 is horizontal with mother's bag 1, son bag 2 highly is higher than female bag 1, son bag 2 after the filling forms concave shape with female bag 1, at first 1 filling of mother's bag is placed on the Longkou, refills son bag 2 and make son bag 2 make protection composite bag become concave shape, again mud bag 3 is positioned between two son bags, sand is filled in the mud bag 3, empty mud bag is positioned on the good mud bag of filling, will be filled into sand in the empty mud bag, repetition filling mud bag can make the mud bag of filling stack up successively the dykes and dams Longkou is joined the two sections of a bridge, etc.

Be illustrated in figure 2 as second embodiment of the invention, described son bag 2 is positioned on female bag 1, two son bags 2 after the filling form the ridge shape, at first 1 filling of mother's bag is placed on the Longkou, refills son bag 2 and make 2 one-tenth ridge shapes of two son bags, again mud bag 3 is positioned between two son bags 2, sand is filled in the mud bag 3, empty mud bag is positioned on the good mud bag of filling, will be filled into sand in the empty mud bag, repetition filling mud bag can make the mud bag of filling stack up successively the dykes and dams Longkou is joined the two sections of a bridge, etc.

Protection composite bag among the present invention and filling mud bag can adopt the high-strength compound geotextiles to make.

Claims

1. the method for a closure of dam, it is characterized in that: use a kind of protection composite bag, described protection composite bag comprises a female bag, be connected with two son bags on female bag, at first the filling of mother's bag is placed on the Longkou, elder generation's filling bag during closure, make the son bag be higher than female bag, stop or block the upper current of female bag, reduce female bag top flow rate of water flow, the mud bag is positioned on female bag is filled into sand, empty mud bag is positioned on the good mud bag of filling again, to be filled into sand in the empty mud bag, repeat the filling mud bag good mud bag that can make filling and stack up successively the dykes and dams Longkou is joined the two sections of a bridge, etc.

2. the method for closure of dam according to claim 1, it is characterized in that, described son bag is positioned at female bag both sides, and make son bag and female bag horizontally, the son bag highly is higher than female bag after the filling, at first the filling of mother's bag is placed on the Longkou, filling bag makes protection composite bag become concave shape then, again the mud bag is stacked between two son bags and is filled into sand, empty mud bag is positioned on the good mud bag of filling again, to be filled into sand in the empty mud bag, repeat the filling mud bag good mud bag that can make filling and stack up successively the dykes and dams Longkou is joined the two sections of a bridge, etc.

3. the method for closure of dam according to claim 1, it is characterized in that, described son bag is positioned on female bag, two son bags after the filling become the ridge shape, at first the filling of mother's bag is placed on the Longkou, filling bag makes two son bags become the ridge shape again, again the mud bag is positioned between two son bags and is filled into sand, empty mud bag is positioned on the good mud bag of filling again, to be filled into sand in the empty mud bag, repeat the filling mud bag good mud bag that can make filling and stack up successively the dykes and dams Longkou is joined the two sections of a bridge, etc.