RU2488657C1 - Method to control heat insulation of swamp beds of ice roads before flattening - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: method to control heat insulation of swamp beds of ice roads before flattening, including filling of the ice road bed with the heat-conductive layer. The specified layer is snow mass, which is shovelled into rolls from the swamp surface that surrounds the ice road base, and then from the formed rolls it is thrown onto the ice road bed until the required thickness of 20-50 cm is achieved for the appropriate heat insulation.

EFFECT: reduced intensity of the process of swamp surface freezing for an ice road bed within permissible limits by depth before flattening.

2 cl, 2 dwg

Description

The proposed technical solution relates to methods of thermal insulation of marsh surfaces before the wash under the base of the winter winder, which excludes the process of effective freezing while staying in anticipation of the priority moment of the wash in contact with ambient air at a negative temperature, which creates favorable conditions for a good wash with a pneumatic roller with squeezing out air bubbles and filling pores water to the appearance of water on the surface and the formation of profile strips.

There is a method for thermal insulation of marsh surfaces intended for the development of a peat layer for a road embankment in swamps, according to which thermal insulation is achieved by filling these surfaces with a layer of dry peat with a thermal conductivity of 0.012-0.14 [I.A. Mosquitoes, Thermodynamics and heat and mass transfer in dispersed frozen rocks. - M.: Scientific World, 2003 - p. 292].

The disadvantage of this method is that it is necessary to pre-harvest and store a large amount of peat in dry summertime under conditions that exclude moisture both in the form of precipitation and from the underlying layers of the soil surface. Why does it require large labor and material costs and this method is generally not suitable for the preparation of bases for seasonal winter winters in compliance with environmental conditions.

The task to which the claimed technical solution is directed is to create conditions that provide a significant reduction in the intensity of the process of freezing of the marsh surface under the base of the carriage within acceptable limits in depth before the dipping.

The technical result is a decrease in the intensity of the freezing process of the marsh surface under the base of the winter hinterland deep to the ditch by using local materials that do not require preliminary preparation, storage and transportation to the place of use.

The specified technical result is achieved by the fact that in the method of regulating the thermal insulation of the swamp bases of winter winters before the hitch, including filling the base of the winter winding with a heat-conducting layer, a feature is that the snow mass is used as the specified layer, which is raked into the rolls from the wetland surface surrounding the winter winding base, and then from the formed rolls, they are thrown onto the base of the winter winder until the thickness required for the corresponding thermal insulation is 20-50 cm. The thickness of the snow layer is about redelyayut depending on the required duration of the waiting period prominki from 0.25 to 2.5 months

The presence of new operations is the distribution of loose snow mass over the entire surface of the base under the winder with a uniform thickness layer by throwing from the formed snow rolls, which provides conditions for a significant decrease in the thermal conductivity coefficient and, thereby, reducing the efficiency of freezing in depth in the same ratio. The use of snow mass (loose snow) allows you to change the coefficient of thermal conductivity, since the coefficient of thermal conductivity of moisture-saturated frozen peat 1.1-1.2, and loose snow 0.1 [I.A. Mosquitoes, Thermodynamics and heat and mass transfer in dispersed frozen rocks. - M.: Scientific World, 2003 - p. 292].

Figure 1 shows the process of forming rolls of snow mass from four bands, figure 2 - the same, with eight bands.

The method of regulating the thermal insulation of the swamp bases of winter winters before the hitch (Fig. 1 and Fig. 2) under conditions of contact with the surrounding frosty air with a layer of cover of insufficient thickness for the effectiveness of thermal insulation by increasing the thickness of the snow layer to 20-50 cm, depending on the required length of time for waiting for the hitch from 0.5 to 2.5 months includes the following basic technological operations: raking snow into rolls 9 (Fig. 1 and Fig. 2) from two strips a and c located on the left side (Fig. 1), and two strips a 'and s', located GOVERNMENTAL on the right side from the base snow road; or raking snow into the rolls 9 of the four lanes a , b , c , d on the left side (FIG. 2) and the four lanes a ', b ', c ', d ' on the right side of the winder; throwing snow from the formed rolls onto the base of the winter on a marsh surface.

The workflow of the proposed method for regulating the thermal insulation of wetland bases of winter winters is as follows.

To regulate the process of freezing of marsh surfaces under the base 11 (Fig. 1 and Fig. 2), the winter car during the waiting period, the drift according to the technological regime is carried out by raking the snow mass (snow) into the rollers 9, for example, with a bulldozer mounted on the basis of a tractor-swamp type T -170 M101. When raking from four strips, the passage is carried out in the forward direction along arrow 1 (Fig. 1). I-I and in the opposite direction in arrow 2 (Fig. 1), cross-section I-I is on the left side of the base of the carriage and arrow 3 is in the forward direction, and in arrow 4, cross-section I-I is in the opposite direction on the right side of the base of the carriage. When raking snow into the rolls 9 of eight strips (FIG. 2), section II the bulldozer pass is carried out according to arrows 1 and 2 in the forward direction and arrows 3 and 4 in the opposite direction from the left side of the base of the carriage and along arrows 5 and 6 in the forward direction and arrows 7 and 8 in the opposite direction on the right side of the base of the carriage.

Further, from rows 9 (FIG. 1 and FIG. 2) sec. I-I snow mass with a uniform layer 10 of a thickness of 20-50 cm, depending on the required length of the waiting period, is poured onto the surface of the base 11 of the winder using, for example, a screw rotor snow loader. If it is necessary to increase the thickness of the thermal insulation layer, the operations of raking and sketching of the snow mass are repeated.

The application of the proposed method for regulating the thermal insulation of wetland bases of winter winters before the hitch allows:

- significantly reduce the depth of freezing of marsh surfaces under the base of winter winters during the waiting period for a wash according to the technological regime within the limits allowing the possibility of a wash;

- significantly extend the waiting period of the blast according to the needs of the technological regime when the depth of freezing of the surface of the base under the winter within the limits allowing the possibility of a blast;

- increase the efficiency and reliability of the further process of dipping.

Claims (2)

1. A method of regulating the thermal insulation of marshy bases of car winters before a hitch, including filling the base of the car winter with a heat-conducting layer, characterized in that the snow mass is used as the specified layer, which is raked into the rolls from the swamp surface surrounding the car base and then poured onto the base of the car from the formed rolls. until a thickness of 20-50 cm is required for the corresponding thermal insulation. 2. The method according to claim 1, characterized in that the thickness of the snow layer is determined depending on the required length of the waiting period for the wash from 0.25 to 2.5 months.

Images