SU1122778A1 - Method of forming drainage in permafrost soil environment - Google Patents

Abstract

A METHOD OF CREATING DRAINAGE UNDER CONDITIONS OF MULTI-YEAR GROUNDS, including the construction of drainage, collector and release, characterized in that, in order to reduce labor costs and shorten construction time, the axis of the reservoir and release the well at a depth of more than 20 years, and more than 20 years of engine, and release the well at a depth of more than 20 MHF, which is more than 20 years old, and has less than 20 years of capacity. , and form a zone of continuous fracturing by camouflet explosion of elongated explosive charges within the drain, along the entire length of the well, within the collector under the permafrost and at Release ke in through underflow talik area under water-permeable soils.

Description

one

The invention relates to land reclamation construction, namely to a drainage device during drainage and for the elimination of frost in areas with multi-frozen soil.

There is a method of creating a closed drainage, which includes developing a trench, filling it with a filter material t11.

The disadvantage of this method of creating drainage is the cutting of the cost of constructing deep drainage under permafrost conditions.

There is also known a method for creating drainage, including the construction of drains, a collector and a plug, and consisting of developing trenches, laying drainage pipes and filtering material, and filling trenches.

The disadvantages of this method are the high cost of constructing deep drainage, insufficient drainage capacity of drains. Due to the limited depth of trench development in areas with permafrost, the drains and the collector part of the drainage are laid directly in the perennial broken rocks, which causes on one side the thawing of the frozen rocks and deformation of drains and collectors, and on the other - the danger of their freezing. The danger of frostbite. It often occurs in the winter period on release from it.

The purpose of the invention is to reduce labor costs and reduce the time of construction of drainage in areas with permafrost.

The goal is achieved in that according to the method of creating drainage under permafrost soils on the axis of the drains, collector and drilling of a well to a depth exceeding the thickness of the permafrost soils, they form a zone of continuous fracturing by means of a camouflet explosion of elongated explosives within the limits of the drains over the entire length of the well, within the limits of the reservoir under the permafrost and at the site of production in the zone of the through-flowing talik under permeable soils.

FIG. Figure 1 shows a scheme for creating drainage under permafrost conditions, in plan; in fig. 2 the same, in section along the axis of the collector.

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The method is carried out as follows.

In the talik region 1, where groundwater is being unloaded onto 5 surface, one or several rows of vertical wells are drilled as ice-cold sources 2 along the axis of the permafrost zone

0 a drainage reservoir 5 is drilled through a series of wells 6, the depth of which exceeds the permafrost thickness by the reservoir thickness. In the area of the nearest river bed or

A creek with a through talik 7, which is selected as a drainage outlet, 5, is drilled into several rows of vertical 8 depths. equal to the depth of the reservoir position

0 in the area of the under-talik. Elongated explosive charges are established in the drilled wells due to the creation of a continuous fracture along the entire length during a camouflage explosion.

5 wells 3 drainage drains 9, continuous fracture-hollowness below the permafrost in the wells. 6 collectors 5 drainage of the necessary power of continuous chatter

Q along wells 8 below the view of the open-air sub-Russian breeds of drainage outlets, mud 10. After installation of elongated explosive charges in the wells, a kama (|) summer explosion is performed. The distance between the wells in the row and between the rows is determined by the fracture radius formed by the camouflet blast of elongated explosive charges. Bleedless drainage formed in this way is found in talc rocks 11 outside the zone of seasonal and long-term frostbite, which ensures its efficient operation both in summer and in winter.

time five

The proposed method of creating drainage allows all drainage elements to be formed in a trenchless manner without underground workings and without imported building materials. The implementation of the proposed method is characterized by simplicity and a high degree of mechanization and little need for a mechanism. When using the proposed method of creating drainage under permafrost conditions, it provides drainage, removal and unloading of groundwater outside the zone

impact of seasonal and perennial freezing. Drains have a high intercepting capacity, and drainage can be carried out at any time of the year.

Claims (1)

METHOD FOR CREATING DRAINAGE UNDER CONDITIONS OF PERMANENTLY FROZEN SOILS, including the construction of drains, collector and release, characterized in that, in order to reduce labor costs and reduce the construction time, the wells are drilled along the axes of the drainer, collector and release to a depth exceeding the capacity of permafrost soils, and continuous fracturing by means of a camouflage explosion of elongated explosive charges within drains, along the entire length of the well, within the reservoir under the thickness of permafrost soils and in the production area ska in the zone of through under-bed talik under permeable soils. ¹ 1