SU740894A2

SU740894A2 - Method of preparing frozen soil to working

Info

Publication number: SU740894A2
Application number: SU782700065A
Authority: SU
Inventors: Дмитрий Аркадьевич Котюков
Original assignee: Новосибирский инженерно-строительный институт им.В.В.Куйбышева
Priority date: 1978-10-17
Filing date: 1978-10-17
Publication date: 1980-06-15

Description

Изобретение относится к области строительства, в частности к разработке мерзлых грунтов.The invention relates to the field of construction, in particular to the development of frozen soils.

Основное авт. св. выдано на способ подготовки мерзлого грунта к разработке путем повышения его температуры ⁵за счет распределения по предварительно очищенной от снега поверхности мерзлого грунта воды с температурой 1О-О°С и выдерживания ее до замерзания. ,The main author St. issued to a method of preparing frozen soil for development by increasing its temperature ⁵ by distributing water at a temperature of 1 ° -0 ° C over a surface previously frozen from snow and keeping it until freezing. ,

Недостаток указанного способа заключается в том, что подготовку участка работ’ в стесненных условиях трудно механизировать, при волнистой поверхности возвышенные участки остаются замерз-’⁵шими, на крутых склонах приходится делать в мерзлом грунте углубления для задерживания воды, а на пористых грунтах происходит утечка воды в нижние талые слои.The disadvantage of this method is that the preparation work area 'in cramped conditions is difficult to mechanize, with undulating raised portions remain zamerz-' ⁵ Chimie, on steep slopes have to make recesses in the frozen soil to water retention, but on the porous ground water leakage occurs into the lower melt layers.

Цель изобретения - обеспечение работ в стесненных условиях, на крутых склонах и на пористых грунтах.The purpose of the invention is the provision of work in cramped conditions, on steep slopes and on porous soils.

Указанная цель достигается тем, что в способе подготовки мерзлого грунта к разработке путем повышения его температуры за счет распределения по предварительно счищенной от снега поверхности мерзлого грунта воды с температурой 10-0°С и выдерживания ее до замерзания, перед распределением воды на поверхность грунта укладывают эластичный теплопроводный материал с ограничителями стока воды.This goal is achieved by the fact that in the method of preparing frozen soil for development by increasing its temperature due to the distribution of water at a temperature of 10-0 ° C preliminarily cleaned from snow and keeping it until freezing, elastic is laid on the soil surface before water distribution heat-conducting material with water flow limiters.

Работы согласно изобретению, осуществляются следующим образом.The work according to the invention is carried out as follows.

Участок работ первоначально очищают от снежного покрова и на очищенную поверхность с помощью автокрана равномерно устанавливают емкости двух размеров в плане 1x1 и 3x3 М, которые имеют днище из брезента. Высоту емкостей принимают равной 0,15 м. Затем емкости заполняют из автоцистерн водой при 8°C и закрывают утепленными крышками. Через двое суток вода в емкостях замерзает и при помощи автокрана их удаляют с участка работ. За этот период температура поверхности грунта равномерно повышается от -5 до -0,5°С, благодаря чему грунт приобретает менее прочное пластично-мерзлое состояние, облегчающее его разработку средствами механизации.The site of work is initially cleaned of snow and on a cleaned surface using a truck crane evenly set the tanks of two sizes in terms of 1x1 and 3x3 M, which have a bottom made of tarpaulin. The height of the containers is taken equal to 0.15 m. Then, the tanks are filled from water tankers with water at 8 ° C and closed with insulated lids. After two days, the water in the tanks freezes and with the help of a truck crane they are removed from the site. During this period, the surface temperature of the soil evenly rises from -5 to -0.5 ° C, due to which the soil acquires a less durable plastic-frozen state, facilitating its development by means of mechanization.

Данный способ подготовки мерзлого грунта к разработке обеспечивает возможность равномерного повышения темпе ратуры поверхности мерзлого грунта независимо от уклона местности, местных возвышений и пористости грунта, что позволяет сократить затраты на вы740894 4 полнение земляных работ в зимний период.This method of preparing frozen soil for development makes it possible to uniformly increase the temperature of the surface of frozen soil, irrespective of the slope of the terrain, local elevations and porosity of the soil, which reduces the cost of excavation in winter.

Claims

The invention relates to the field of construction, in particular to the development of frozen soils. The main author. St. issued for the method of preparing frozen soil for development by raising its temperature due to the distribution of water over the surface of frozen ice with temperature lO-O over the surface of the frozen ground that has been previously cleared of snow and keeping it freezing. The disadvantage of this method lies in the fact that the preparation of the site of work in cramped conditions is difficult to mechanize, with a wavy surface, the elevated areas remain frozen, on steep slopes you have to make recesses in frozen soil, and water leaks on porous soils in the lower thawed layers. The purpose of the invention is to work in cramped conditions, on steep slopes and on porous soils. This goal is achieved by the fact that in the method of preparing frozen soil for development by increasing its temperature by distributing water with a temperature of 10-0 ° C over the surface of frozen soil previously cleared from snow and keeping it freezing before the water is distributed to the surface of the soil elastic heat-conducting material with water flow limiters. The works according to the invention are carried out as follows. The plot of works is initially cleared of snow cover and on a cleaned surface, using a crane, uniformly install the two sizes of containers in the plan 1x1 and 3x3 id, which have a tarpaulin bottom. The height of the tanks is equal to Otl5 m. Then the tanks are filled from the tankers with water at 8s and covered with insulated lids. After two days, the water in the tanks freezes and with the help of a crane 3 74089 they are removed from the works section. During this period, the temperature of the soil surface rises uniformly from -5 to -0, 5C, so that the soil acquires a less durable plastic-frozen 5 state, facilitating its development by means of mechanization. This method of preparing frozen soil for development makes it possible to uniformly increase the temperature of the surface of frozen soil, regardless of the terrain slope, local landmarks, and porosity of the soil, which reduces the cost of earthwork during the winter period. The invention of the method of preparing the frozen soil for the development of author. No. 503004, characterized in that, in order to ensure work in cramped conditions, on steep slopes and on porous soils, before distributing the water, the surface of the soil is laid with an elastic heat-conducting material with water flow restrictors.