SU874869A1 - Device for providing counter-filtration curtains in soil - Google Patents

Description

(54) DEVICE FOR CREATING ANTI-FILTER CURVES IN GROUND

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The invention relates to the drying of pits for buildings and structures, in particular, to devices for creating impervious curtains in the ground.

A device is known for creating, pro-filtering curtains in the ground, including vibration equipment, a lamellar tool with broadening of lateral faces and a material supply hose (1).

The disadvantage of this device is that it requires the use of powerful lifting equipment and special devices to guide the working body, which increases energy consumption and reduces productivity.

Closest to the present invention, there is a vibration device for deep compaction of water-saturated soils, including vibrating equipment, a central tube, hollow elements oppositely attached to its lower part, with ringing at the outer ends n a fitting with a hose 2 connected to it.

The drawbacks of the known device are the formation of a waterproof

layer on a relatively large thickness, which leads to unjustified consumption of ma-. material and labor costs and requires the use of heavy-duty equipment when removing the device from the soil, which increases the energy intensity of the work.

The purpose of the invention is to reduce costs by reducing the thickness of the curtain and energy-intensive immersion.

The goal is achieved by the fact that in the device, which includes the vibrating equipment, the central tube, which are counter-positively attached to its lower part. hollow elements with broadening at the outer ends and a fitting with a hose attached to it, each hollow element is designed as a diaphragm located along the central tube with a perforated wedge-shaped lower end, and the vibration equipment is arranged in the diaphragm of pneumatic breakers located in the lower part of the central tube , and the diaphragm cavities are connected between each other, and the fitting is installed on the upper end of one of the diaphragms.

In this case, the device is equipped with an air distributor of pneumatic punches, the inlet

which is connected to the upper part of the central tube.

FIG. 1 shows the proposed device, the general view; in fig. 2 shows section A-A in FIG. I.

The device has pneumatic hammers placed in the wider 2 outer ends of the hollow diaphragms 3 and in the lower part of the central tube 4. Each diaphragm 3 in the lower part is made with a wedge-shaped perforated end 5, and a branch pipe 6 with an attached hose is mounted on the upper end 7 for supplying an impervious material. Above the pneumatic hammer 1 located in the lower part of the central pipe 4, a pneumatic distributor 8 of pneumatic -5 drummers 1 is mounted, the inlet of which is connected to the upper part of the central pipe 4.

The device works as follows.

Before the beginning of the immersion, the device with the auxiliary equipment (not shown) is mounted vertically on the soil surface, compressed air is supplied to the upper part of the central pipe 4, which actuates the pneumatic air guide 1, while the air distributor 8 ensures their synchronous vertical directed impacts. Under the impact of the impact of the hammer 1, the device begins to sink into the ground, and simultaneously the hose 7 is supplied with an impervious material, which through the perforated lower end 5 of the diaphragm 3 penetrates the soil pores and fills them. For example, clay paste is used as an impervious material.

When the desired depth is reached, the device is removed without interrupting the supply of the anti-filtration material until the device reaches the surface. The device is then installed on the surface of the ground so that the external air hammer 1 is located above the extreme extended part of the previous dive.

Then the device is immersed in the same technological sequence.

The proposed device provides an impervious screening curtain of various configurations in plan as well as at an angle to the vertical, while reducing costs, both by reducing material consumption and by reducing the energy intensity of the work.

Claims (2)

1. An apparatus for creating impervious screens in the ground, including vibration equipment, the central tube of hollow elements opposite to its lower part with broadening at the outer ends and a fitting with a hose attached to it, characterized in that, in order to reduce costs by reducing the thickness of the curtain and the energy capacity of the immersion, each hollow element is made in the form of a diaphragm located along the central tube with a perforated wedge-shaped lower end, and the vibration equipment is in the form of diaphragms of pneumatic punches placed in the lower part of the central tube, and the diaphragm cavities are interconnected, mounted on the upper end of one of the diaphragms. 2. A device according to claim 1, characterized in that it is provided with an air distributor of pneumatic punches, the inlet of which is connected to the upper part of the central tube. Sources of information taken into account in the examination 1. Kheifets V. B. Thin anti-seepage walls .- “Hydraulic engineering construction. 4,1973, No. 3, p. 44-45. 2. USSR author's certificate number 185276, cl. E 02 D 3/12, 1964.