SU1518453A1 - Method of control of soil bulges - Google Patents

Abstract

The invention relates to the construction and operation of man-made landscapes in permafrost conditions. It allows reducing the cost and material consumption of counterintuitive measures, as well as increasing their duration. For this, a depressurization of the closed hydraulic system is carried out by drilling at the maximum well diameter at the well site. It drills to a depth exceeding the boundary of waterproof rocks. A pipe is punched into the well in the middle part and expanding conically upwards and downwards from the boundary of water-resistant rocks. The tube is made of a hydrophobic material and left raised above the day surface by the magnitude of the power of the aquifer lens. The annular space to the border of aquiferous rocks is filled up with filtering soil or material, and in the lower part is filled with acute angular rock rubble and anchored it. When the soil freezes, ice on the cork, which does not adhere to the pipe walls, is constantly squeezed out, detached and falls to the surface. 2 Il.

Description

The invention relates to the construction and operation of man-made landscapes in permafrost conditions, in particular, to methods for combating soil heaving.

The purpose of the invention is to reduce the cost and material consumption of countering measures in frozen soils and to determine the duration of their action.

FIG. 1 shows a scheme for the immediation of a method prior to the formation of a bump; Fig. 2 - the same, after the formation of the tuigle tuber.

The method is carried out as follows.

With a horizontal (FIG. 1) or swollen (FIG. 2) day surface 1 above the aquifer 2 or the top of the aquifer lens 3, a well 4 of any (preferably large) diameter is drilled in a helix tuft, into which a pipe 5 of hydrophobic material is then inserted holding large pressures, for example fluoro-plast-4. Pipe 5 consists of two truncated cones, the tops of which

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connected at distances i ,. equal to the deepening of the pipe above the border of 6 many years old fidgety or thawed water-resistant breeds. The upper end 5 is raised above the day surface 1 to the height of the power of the aquifer lens 3,

The conical shape of the pipe 5 from the hydrophobic material at the lower end is needed for anchoring it, and at the upper end - for easier extrusion of ice when the ground freezes.

The annular space up to the border of 6 multi-sub-frozen rocks or thawed waterproof rocks is filled with filtering soil or material s, for example gravel-pebble. mixture 7, which serves as a line for small particles. In the lower part, the annular space is filled with acute angular crushed stone 8, which adheres the pipe 5 to the frozen ground and anchors it.

Pipe 5 a. Middle part perfornru. Small holes for the power of the antifreeze aquifer Zz remain after merging of the seasonal and permafrost. By this, the hydraulic pressure arising in the aquifer 2 or the aquifer lens 3 as the soil freezes is transferred to the base of the ice plugs 9j which are formed under the influence of heat exchange with the surrounding seasonally frozen and permafrost soil mass 10

Since in the upper part there are no pipes 5, there is no pressing stop, and its walls practically do not have water adhesion. Top ice on the plug 9 when the soil freezes constantly increases and comes off and falls on the bottom surface 1 forming an icy body in winter. from separate pieces of ice 11, which in summer distributes.

Thus, a depressurization of a closed hydraulic system is formed, which is formed between the upper seasonally frozen soils of 12 and the lower non-filtering soils, including permafrost and slopes lO; and including a bowl 2 with aquifer soils limited by a lens 13 coinciding with the upper boundary of permafrost soils.

Hydrophobic Polymer Substances

(for example, fluoroplast-4) have all the necessary properties for the manufacture of a double cone pipe: they have virtually no adhesion with water,

as a result, there is practically no friction between ice and its walls, resistance to discharges reaches 200–300 kgf / cm, with a decrease in temperature; strength increases. It is possible to make a product of any shape from a powdered mass with subsequent heating, the anticorrosive properties of the material are great, the aging of the material and the destruction of its structure occurs very slowly, which leads to a long duration of the method of dealing with chilling bumps.

formula of invention

The method of dealing with bump bumps, including the formation of cavities in frozen soil from the day surface at the site of the heel in the zone of the aquifer lens located on the border of the waterproof rocks, so that with the aim of reducing the cost . material consumption of anti-beam measures in frozen soils and increase their life, the hole is formed by drilling bkazhiny and deepen its bottom below the boundary of water-resistant rocks, a pipe is additionally burned into the well, the free end of which is located above the surface of the day to the height of the power of the aquifer lens the pipe is made of a hydrophobic material conically expanding upwards and downwards from the

 impermeable rocks and perforates in the middle part, while the annulus up to the boundary of the water-refractory rocks is filled with rubble and anchored, and above the boundary of the impermeable rocks is filled with filter material

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Claims (1)

Claim A method of combating heaving tubercles, including the formation of cavities in frozen ground from the day surface at the heaving site to the zone of an aquifer lens located at the boundary of the water-resistant rocks, characterized in that, in order to reduce cost. the material consumption of antimodal events in frozen soils and the extension of their validity, the hole is drilled and the hole is buried below the boundary of the water-resistant rocks, they are additionally immersed in the well: a pipe, the free end of which is placed above the surface to the height of the aquifer lens power, the pipe is made of hydrophobic material conically expanding up and down from the border, faces of the water-resistant rocks and perforate in the middle part, while the annular space to the border of the water-resistant rocks zap They fill it with rocky gravel and anchor it, and above the border of water-resistant rocks they fill it with filter material.