SU844654A1 - Method of constructing a pipe under embankment - Google Patents

Description

(54) METHOD FOR CONSTRUCTING A PIPE UNDER BOTTOM

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I The invention relates to the field of construction of bulk earth structures that include pipes.

It has been established that during the erection of a pipe under an embankment, the vertical pressure of the soil of the body of the embankment reaches twice the weight of the overlying prism above the pipe. With the construction of high embankments, pipe designs, especially large ones, become very heavy. Therefore, one of the main tasks in the construction of pipes under embankments is the use of such a method that would ensure the minimum vertical pressure of the embankment soil on the pipe.

A known method of raising a pipe under the embankment provides for reducing the soil pressure, including mounting a pipe supporting structure, placing a layer of plastic material on the top of the pipe, filling the embankment and discharging a layer of plastic material into the pipe cavity during operation through channels in the LIJ pipe body.

The disadvantage of this method is low unloading capacity.

There is also known a method of erecting a pipe under the embankment, which consists in mounting the pipe supporting structure, placing a layer of fluid material on its upper part, pouring an embankment over it, and then releasing the fluid material into the pipe cavity through the channels in e-body 12

The disadvantage of this method is that it has a low discharge capacity due to the fact that part of the sand can be trapped in the soil of the embankment body and not washed out with water.

5 The aim of the invention is to increase the efficiency of pipe unloading from the vertical pressure of the soil. This goal is achieved by freezing the flowable material before dumping the embankment, and also by using water as the flowable material.

FIG. 1 shows a pipe, cross section; in fig. 2 - the same

25 with a frozen layer of ice on top of the pipe; in fig. 3 - pipe and partially erected embankment, section; in fig. 4 - pipe and fully erected on the mound, cut. 30 The pipe is erected as follows.

Claims (2)

Claim 1. The method of erecting a pipe under the embankment, which consists in mounting the supporting structure of the pipe, placing a layer on its upper part IQ of the flowing material, pour a mound over it, and then release the flowing material into the pipe cavity through the channels in it. The reason for this is that, in order to increase the efficiency of unloading the pipe from the vertical pressure of the soil, the freezing material is frozen before filling the embankment. 2. The method according to claim 1, characterized in that as 20 bulk materials use water.