SU1469028A1 - Trench for laying thin-walled pipeline - Google Patents

Abstract

The invention relates to the construction of underground utilities and can be used in irrigation and energy construction, will reduce the material intensity of the laid pipeline and increase the reliability of its work. A trench for laying a thin-walled pipeline includes walls 1, which can be made with an arbitrary laying of the slopes of the bottom 2 with the notch 3 centrally located in it under the pipeline 4 with a depth of 0.9-1.5 of its diameter. The base of the notch is flat 5 or concave in the shape of a semicircle with a primum in the central part, the width and depth of which is 0.1-0.5 of the diameter of the pipeline 4, with the walls of the notch 3 above the horizontal diameter extending from the trench axis. Such an embodiment of the trench allows to reduce the vertical deformations of the pipeline from the mass of backfill and overburden due to the inclusion of undisturbed soil in the walls of the notch. 2 Il. 2 5S (L

Description

and

and so on

oo

figure 1

eleven

The invention relates to the construction of underground utilities and can be used in irrigation and energy construction.

The aim of the invention is to reduce the material intensity of the laid pipe and its reliable operation.,

Figure 1 shows a cross section of a trench with a flat base cut; 2 - the same, from the bottom

eat 5 in a semicircle shape. . A trench for laying a thin-walled pipeline includes walls 1, which can be made with arbitrary laying of slopes, and a bottom 2 with a notch 3 centrally located in it under pipeline 4 with a depth of 0.9-1.5 of its diameter. The cut-out base is made flat 5 or concave 6 in the shape of a semicircle with arm 7 in the central part, the width and depth of which is 0.1-0.5 of the pipeline diameter. 4, with the walls 8 of the cut-out 3 above the horizontal diameter level being made with a slope from the trench axis.

In a trench with walls 1, executed - the Formula

thirty

With an arbitrary laying of a slope, in the base 2 of which there is a cutout 3, the thin-walled tube 4 is laid down and covered with the soil of the back patch. The pipe 4 is deformed with increasing horizontal diameter, but the walls of the middle part of the cutout 3 adjacent to the pipe, folded from undisturbed soil of the base, due to their high density, repulse displacements of the pipe wall 4 at the level of the horizontal diameter in the direction of the soil, thereby increasing the carrying capacity of the pipe 4. The semicircular bed 6 of the drain 3 improves the support of the pipe 4 on the soil. When mock 7

Living capacity for falling into a trench when laying pipe 4 lumps of earth and stones, thereby ensuring the cleanliness of the bed 6, which means that the high quality of the support of the pipe 4. Upper part 8 of the cutout 3 ensures the integrity of the middle part of the cutout when laying the pipeline, facilitates laying , improves its quality.

The proposed form of a trench can be performed, for example, with some modernization of the working body of bucket-wheel excavators.

The measurements, carried out in triplicate, showed a decrease in the deformability of pipes laid in trenches of the form described, as compared with the same pipe operating under the same conditions but laid on a base in a conventional trench of the same width without a cutout. Thus, in a trench with a cut-out made in FIG. 1, the deformation of the vertical diameter of the pipes was t, 5 times, and in the trench of FIG. 2, it was 3.7 times less than in the control pipe.

 Formula

thirty

p and e and

five

A trench for laying a thin-walled pipeline, including the bottom and walls, characterized in that, in order to reduce the material intensity of the laid pipeline and increase its reliability, the trench is made with a centrally located in the bottom cutout under the pipeline with a depth of 0.9-1.5. diameter, and the cut-out base is made flat or concave in the shape of a semicircle with a primum in the central part, the width and depth of which is 0, 1 - 0.5 pipeline diameter, and the walls of the notch above the horizontal diameter of the pipe oprovoda performed with a bias from the trench axis.

FIG. 2

Claims (1)

Claim A trench for laying a thin-walled pipeline, including a bottom and walls, characterized in that, in order to reduce the material consumption of the laid pipe and increase the reliability of its operation, the trench is made with a centrally located cut-out under the pipeline with a depth of 0.9-1.5 of its diameter, and the base of the cut is made flat or concave in the form of a semicircle with a pit in the central part, the width and depth of which are 0, ΙΟ, 5 of the diameter of the pipeline, and the walls of the cut are higher than the horizontal diameter of the pipeline Yes made with a slope from the axis of the trench.