CN201058995Y

CN201058995Y - Seaside earth coffer-dam

Info

Publication number: CN201058995Y
Application number: CNU2007200128960U
Authority: CN
Inventors: 王永志; 刘岩; 刘小鹏; 陈晓霞; 汪澜; 刘凤君
Original assignee: Liaohe Petroleum Exploration Bureau
Current assignee: Liaohe Petroleum Exploration Bureau
Priority date: 2007-06-22
Filing date: 2007-06-22
Publication date: 2008-05-14
Anticipated expiration: 2017-06-22

Abstract

The utility model relates to a coat, river and lake cofferdam, in particular to a seaside earth cofferdam which consists of a concrete platform, a shore line and an earth cofferdam, wherein, the earth cofferdam is a mound which is formed by plain soil through rolling and has certain hardness; moreover, the inner edge and the outer edge of the mound are circular arcs, while the cross section is in the shape of a triangle; straw bags which are built by plain soil are laid at both sides of the slope of the mound; a plurality of vertical steep pipe piles are inserted from the periphery of the earth cofferdam; moreover, the upstream slope of the earth cofferdam is covered with waterproof geotextile. The utility model can resist the impact of tidewater and ice raft for a long time, and has low cost which is three to four times lower than a steel sheet pile; moreover, the utility model can be widely used in cofferdam construction in rivers, lakes and shallow seas.

Description

A kind of seashore earth fill cofferdam

Technical field:

The utility model relates to seashore river, lake, cofferdam, especially a kind of seashore earth fill cofferdam.

Background technology:

In the oilfield development process through the river of being everlasting, lake and territory, coastal waters environment carry out engineering construction, for a desirable working platform is arranged, therefore to carry out the cofferdam, seashore in this zone, coffering mainly adopts steel sheet pile and earth fill cofferdam mode at present, wherein steel sheet-pile cofferdam is subjected to tidal effect and the slow cost height of construction progress easily, though and the earth fill cofferdam cost in the existing technology low itself to resist the tidewater impact capacity relatively poor.

The utility model content:

The purpose of this utility model is in order to overcome above-mentioned shortcoming, and a kind of seashore earth fill cofferdam that provides, this cofferdam be to the improvement of existing technology earth fill cofferdam in that to be used for seashore coffering cost low, and can prevent the morning and evening tides invasion and attack.

Technical solutions of the utility model:

For realizing above-mentioned task, the utility model is made up of concrete platform, the place ahead shoreline, earth fill cofferdam; Described earth fill cofferdam is to roll the certain degree of hardness that has that forms with plain soil, outer rim is a circular arc in it, the knoll that the cross section is triangular in shape, and straw bag that the mound of being always or usually as specified is built is built in knoll side slope both sides, be with some vertical steel pile tubes outside the cofferdam and insert, cofferdam upstream face direction covers the waterproof geotextiles.

Described earth fill cofferdam height is 3-8 rice, bottom width 20-22 rice, 7 meters of top widths, 220 meters of length.

The advantage that the utility model compared with prior art has is:

Owing to straw bag the long-pending cofferdam that forms of plain mound is housed during neap by the sea, and be coated with geotextiles at upstream face, hammer into steel pipe pile again around straw bag, can prevent so not only that seawater from impacting can prevent that again the cofferdam from making moist water slug and cave in, utilize the bank physical relief in the middle of two side direction, to close up during construction, technology is simple, easy construction, cost is low, this cofferdam than the low 3-4 of steel sheet pile technology cost doubly, up to now this cofferdam put into operation experienced in Bohai Sea Gulf in ten months every day twice tidewater impact and winter ice raft impact stand intact so far.

Description of drawings:

Fig. 1 is the utility model structural representation.Fig. 2 is the utility model flat distribution map.

Among the figure 1, concrete platform, 2, shoreline, 3, earth fill cofferdam, 4, plain soil, 5, steel pipe pile, 6, geotextiles, 7, straw bag, 8, the river bed bed.

The specific embodiment:

The utility model is provided by following examples, below in conjunction with accompanying drawing the utility model is described further.

Among Fig. 1, showed the earth fill cofferdam structural representation.Concrete platform 1 is a rectangle or a circular working platform of constructing with cement steel among Fig. 2, its length 1/4 extend in the shoreline 2, earth fill cofferdam 3 be with plain soil 4 roll form have certain degree of hardness in it outer rim be circular arc, the cross section is leg-of-mutton knoll, straw bag 2 of the mound of being always or usually as specified is built in knoll side slope both sides, be with some vertical steel pile tubes outside the cofferdam and insert, the cofferdam upstream face covers waterproofer's cloth 6.

During construction, have bad luck cubic metre of earth stand-by earlier to the seashore; People's frock straw bag 7 is standby, when seawater neap, pile again in section both sides, cofferdam and to build straw bag that contains soil and to have bad luck the earthwork with machinery, as the space occurs between straw bag and will banket at any time or build straw bag at any time by laying bricks or stones, and timely grinding compacting, when in backfill, to use equipment that steel pipe pile is vertically hammered in the periphery, cofferdam and cave in to prevent the cofferdam from making moist water slug.In addition, the sub-upstream face direction of straw bag of building at heap covers geotextiles 6, prevent that tidewater from impacting straw bag and causing breakage, cause the cofferdam to cave in, be also noted that simultaneously piling straw bag of building at interim discontinuous point will hammer into steel pipe pile, prevent that the place's earthwork of interim discontinuous point from being washed away by tidewater, it is comparatively suitable generally will to utilize the bank physical relief to close up in the middle of the two side direction cofferdam when carrying out the cofferdam.

Claims

1. a seashore earth fill cofferdam is made up of concrete platform (1) shoreline (2), earth fill cofferdam (3); It is characterized in that: described earth fill cofferdam (3) is to roll the certain degree of hardness that has that forms with plain soil (4), outer rim is a circular arc in it, the knoll that the cross section is triangular in shape, straw bag (7) that the mound of being always or usually as specified is built is built in knoll side slope both sides, be with some vertical steel pile tubes (5) outside the cofferdam and insert, cofferdam upstream face direction covers waterproof geotextiles (6).

2. a kind of seashore according to claim 1 earth fill cofferdam is characterized in that: described earth fill cofferdam height is 3-8 rice, bottom width 20-22 rice, 7 meters of top widths, 220 meters of length.