The method of construction using free-fall for cargo seals and layout of the underwater rock fill base

 

The invention relates to an improved method of construction using free-fall for cargo seals and layout of the underwater rock fill base. A new method of construction using free-fall for cargo seals and layout of the underwater rock fill base is that it includes the following stages: constructing a mound of rock placement, having a height somewhat greater than the design height of the finished rock fill base, the width of the ridge, slightly larger than the design width of the ridge ready rock fill base, thus both increasing the width of the side parts are temporary slopes of the ridge, and the inclined surface having a slope of repose, the free fall of the load repeatedly carry out the seal and the layout from the Central part of the crest of temporary slopes of the ridge to reduce the height of the ridge to the design height, and then obresult cargo rock placement on temporary slopes of the ridge to decrease the width of the ridge to the design width of the ridge, exposing the project escarpment crest on the outer edges across the width of the ridge, and change the slope of inclined surfaces slope testest to make the layout of the cargo even in the scarp of the ridge with the achievement of sufficient density and strength in him, what, therefore, provides an opportunity to minimize underwater finishing the work performed by the diver, and thereby significantly reduce the time and cost of construction as compared with prior art. 2 C.p. f-crystals, 3 ill.

The present invention relates to an improved method of construction using free-fall for cargo seals and layout of the underwater rock fill base.

There is a method of construction of the underwater rock fill base (shown schematically in Fig.3), which form a mound of riprap M with a cross-section in the form of slides, which has a width of the ridge corresponding to the design width W of the ridge, the height somewhat greater than the design height H, and two side slanted surface G', G' with a slope of repose, essentially equal to 1:1 (in this case, the slope is the ratio of the length of the vertical line from the top, namely, from the cliff's crest to the bottom of the embankment to the length of a horizontal line from this vertical line to the bottom of a slope; same will be applied hereinafter). Then carry out the plan of the crest of the embankment through neodnokratno what about the design height.

The closest is a method of construction using free-fall for cargo seals and layout of the underwater rock fill base, including its layout and compaction load (see, for example, SU 252202 And 09.02.1970, E 02 3/12). This method is the most efficient and economical method of construction usually among the proposed methods plan of the underwater rock fill base.

The layout of the load P and the seal riprap by plan sequentially carried out from the Central part of the crest of the embankment of the riprap to the outer edges, and it is up to the ledges, S, S crest. Excessive rock placement, push to open an inclined surface.

In particular, as the ledges, S, S ridge are open on the outer side, the layout of the load P will not result in compaction, and will likely cause a drop in riprap in this part.

Therefore, the layout of the load R is not performed directly on the ledges, S, S of the ridge, and ends on the inner side, and the formation of ledges S, S ridge and inclined surfaces G', G', adjacent thereto, is carried out exclusively by divers in finishing works, Peabody template for slope and occiput required quantity of riprap in the ledges, S, 's crest and the adjacent inclined surface G', G' to furnish to the design of the width W of the ridge, the design height H and the design slope of inclined surfaces G, G (slope of approximately 1:2 to 1:3).

Thus, the density and strength of the ledges, S, S crest essentially be small compared with the density and strength in the Central part of the ridge, where the layout of the exercise load.

On the other hand, underwater finishing work should be carried out by divers in a floating state. In particular, in shallow water the body becomes unstable even at low tide, making it difficult to carry out such work accurately and safely.

The present invention is to provide a method of construction using free-fall for cargo seals and layout of the underwater rock fill base, which allows the layout of the cargo even in the slopes of the ridge with the achievement of sufficient density and strength in these places that, therefore, can minimize the execution underwater finishing works a diver and, thereby, significantly reduce the time and cost of construction as compared with prior art.

According to one the plan of the underwater rock fill base contains the following stage.

1. The embankments of rock placement, having a height somewhat greater than the design height of the finished rock fill base, the width of the ridge, slightly larger than the design width of the ridge ready rock fill base, thus both increasing the width of the side parts are temporary slopes of the ridge, and the inclined surface having a slope of repose.

Repeated implementation of the free fall of the load seal and planning from the Central part of the crest of temporary slopes of the ridge to reduce the height of the ridge to the design height.

2. The collapse load of riprap temporary slopes of the ridge to decrease the width of the ridge to the design width of the ridge, exposing the project escarpment crest on the outer edges across the width of the ridge, and the change of slope of the inclined surfaces slope of the natural slope to slope design of inclined surfaces.

The design slope of inclined surfaces is preferably from 1:2 to 1:3. The method of construction using free-fall for cargo seals and layout of the underwater rock fill base, in addition, may contain a stage of carrying out the necessary finishing work on the project is contained under water.

The present invention is illustrated below with reference to the accompanying drawings by the example of the preferred alternative implementation of the present invention, which, however, should not be considered as limiting the invention, but serve only to explain and understand.

In the drawings shown:

Fig.1 - section of a first variant implementation of the mound of riprap in accordance with the present invention; and

Fig.2 - section, showing the collapse of a temporary ledge crest after compaction of the embankment of the riprap to the design height;

Fig.3 - cut mound of rock placement, designed to discuss the usual way.

Below the present invention is described in detail on the example of the preferred variants of its implementation and with reference to the accompanying drawings. In the following description numerous specific details in order to ensure full understanding of the present invention. However, as is obvious to experts in this field, the present invention can be implemented without these specific details. On the other hand, in order to avoid unnecessary ambiguities of the present invention in detail not shown are well known. is connected in Fig.1 and 2.

It is assumed that the finished underwater rock fill base has a design width W of the ridge, the design height H, project slanted surface G, G (with the slope being from 1:2 to 1:3), and thus, the outer edge of the crest on its design width W and the upper edge design of inclined surfaces G, G form ledges S, s

Beginning with the working boat in a known manner perform rock fill for the construction of embankments M with a cross-section in the form of slides and with the following structure.

A mound of riprap M is formed with a height H' that is slightly greater than the design height H, namely with advanced placement. On the other hand, the width W of the ridge do more than the design width W of the ridge, the value of, for example, exceeding the length of one edge of the load P, at least twice (about 2.5 m). Parts corresponding to both elongated side portions L are temporary ledges S', S'. In addition, the slope of inclined surfaces G', G' is equal to the slope of repose (essentially 1:1).

Then to seal and planning from the height H' of the ridge to the design height H perform the layout of the free fall of the load P, is suspended from the crane boom working boat, from the center of the am S', S', formed by an implanted parts of the length L.

As in this case, the outside open temporary ledges S', S', then strikes the load P would lead to the collapse of the sketches in the relevant parts, and the seal on the merits would be insufficient.

Note, however, that the ledges, S, S ridge, located inside of temporary ledges S', S' crest, namely the ledges, S, S crest on the outer edges of the design ridge width W and the upper edges of the design of inclined surfaces G, G, are termouprochnennyj like the Central part of the surface of the ridge.

Then through vertical sliding or lateral swing of the load P is relatively temporary ledges S', S' crest adjusted the width of the ridge to the design width W, exposing the ledges, S, S crest and changing the slope of repose (essentially 1:1) inclined surfaces G', G' to bias the design of inclined surfaces G, G, essentially equal to from 1:2 to 1:3.

After that, to obtain the desired underwater rock fill base perform the necessary finishing work on the ledges, S, S crest and the adjacent inclined surfaces G, G, performed by divers manually under water to complete a stage of the method of construction with Primack follows from the above, when using the construction method with the use of free-fall for cargo seals and layout of the underwater rock fill base even in the slopes of the ridge to reach sufficient density and strength, while planning the cargo. Thus, it can be minimized underwater finishing the work performed by the diver. Therefore, compared with the conventional method can significantly reduce the time and cost of construction.

Claims

1. The method of construction using free-fall for cargo seals and layout of the underwater rock fill base, including its layout and compaction load, characterized in that, perform the following steps: constructing a mound of rock placement, having a height somewhat greater than the design height of the finished rock fill base, the width of the ridge, slightly larger than the design width of the ridge ready rock fill base, thus both increasing the width of the side parts are temporary slopes of the ridge, and the inclined surface having a slope of repose, perform repeatedly by free fall of the load plotnostnoi height, and then obresult cargo rock placement on temporary ledges to decrease the width of the ridge to the design width of the ridge, exposing the project escarpment crest on the outer edges across the width of the ridge, and change the slope of inclined surfaces slope of the natural slope to slope design of inclined surfaces.

2. The method of construction using free-fall for cargo seals and layout of the underwater rock fill base under item 1, in which the slope design of inclined surfaces is from 1:2 to 1:3.

3. The method of construction using free-fall for cargo seals and layout of the underwater rock fill base under item 1 or 2, which additionally includes a step of carrying out the necessary finishing work on the project escarpment crest and adjacent design of inclined surfaces, which are manually performed by a diver under water.

 

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