SU1118739A1 - Arrangement for forming a cavity in soil - Google Patents

Abstract

DEVICE FOR EDUCATION OF CAVITY IN THE GROUND, including II mounted on the base machine working body in the form of a hollow rod with jet nozzles located on it for supplying the working fluid directed in the direction of movement of the base machine, while the working body is fixed with the possibility of reciprocating movement in the plane perpendicular to the axis of the base machine, characterized in that, in order to expand the operational capabilities, perpendicular to the hollow rod is rigidly and tightly attached to the pipeline, At the ends of which there are jet nozzles with holes, one of which is oriented on each side in the direction of movement of the base machine, and the others parallel to the pipeline towards each other.

Description

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The invention relates to land reclamation construction and may find application in the creation of a new technique that constructs land reclamation systems and various underground linear structures.

A device is known for forming a longitudinal piping space in the ground, the mole, which includes a knife interacting with the base mask and a projectile (drener) attached to its lower end, which, when the base mask moves, spreads the groove and moves at a predetermined level, leaving a pipe-like mole. Such underground pipe-like spaces (mole cells) in construction practice can serve as independent ground drainage lines or as the first stage of the construction of a tubular drainage system — to reduce the level of groundwater and remove excess water from the land mass 1.

However, all these molehills are of little use in construction because of the required high pulling force, which limits the size of the drainage liner with a diameter of up to 100 m and the depth of laying of drains up to 1.5 m. In addition, during the formation of the tubular space (mole) The force of the drainage is compacted by the surrounding soil and the permeability of the drain around the perimeter is deteriorated.

With a depth of more than 1-1.5 m, drainage lines are constructed in the form of open channels with reinforced slopes (filter material) or filter pipelines laid by trenching, narrow-laying or trenching methods with sprinkling of filtration material and subsequent backfilling with soil. Open and closed horizontal drainage systems are widely used in land reclamation practice, but they require partial manual labor and are very expensive.

In some specific hydrogeological conditions, vertical drainage systems are also used, which are even more energy-intensive and extremely expensive.

Reducing the level of groundwater on land massifs to the desired level can be achieved with the help of deep-laid (4-m and more) simplest systems of soil molehills, which would be arranged at a predetermined depth and in a given direction as needed. These molehills (tubular spaces) could be partially filled with sand or gravel and provide the same effect as drainage systems.

from open channels or closed tubular drainage lines.

Currently, in the construction practice there are no technical

Means capable of performing a mole in the ground at a great depth (over 2 m). The closest technical solution to the invention is a device for the formation of a cavity in the ground, including a hollow rod mounted on the base machine, with jet nozzles located on it for supplying the working fluid directed in the direction of movement of the base machine; the possibility of reciprocating movement in a plane perpendicular to the axis of the base machine 2.

However, the known device cannot be used to form the longitudinal tube-like space of the mole in the soil at a given depth, since all of the jet nozzles on it are located in the same plane along the rod of the working body, and the jets are directed along the movement of the base machine.

The aim of the invention is to expand the operational capabilities of the device, in particular, to build a tubular space (mole) in the soil at a given depth with predetermined dimensions, simplifying the construction of drainage systems.

The goal is achieved by the fact that in a known device for the formation of a cavity in the ground perpendicular to the hollow rod there is rigidly and tightly attached a pipeline, at the ends of which there are jet nozzles with holes each, one of which is oriented on each side along the movement of the base machine, and others are parallel to the pipeline towards each other.

FIG. 1 schematically shows a device for creating a space in the ground; in fig. 2 - a fragment of a soil massif with a finished slot and a pipe-like space (molehill).

The device includes mounted

on the base machine, the working body in the form of a hollow rod 1, which has evenly spaced jet nozzles 2 and transverse pipeline 3 along the entire length of the front face, is symmetrical, rigid and hermetic

attached to the hollow rod 1. At both ends of the additional pipeline, jet nozzles 4 are mounted with two openings each. The length of the transverse additional pipeline is chosen equal to the given diameter of molehill.

or the width of the space required.

The device works in the following way.

Working body with attachments

equipment mounted on the base

Claims (1)

(57 (DEVICE FOR THE FORMATION OF A CAVITY IN THE SOIL, including a working element mounted on the base machine in the form of a hollow rod with jet nozzles located on it for supplying the working fluid directed towards the movement of the base machine, while the working body is fixed with the possibility of reciprocating movement in a plane perpendicular to the axis of the base machine, characterized in that, in order to expand operational capabilities, a pipe is rigidly and hermetically connected perpendicularly to the hollow rod, to which Zach is installed jet nozzles with holes, some of which from each side are oriented along the machine base movement, and other - line parallel towards each other.