SU885429A1 - Method of fighting the sagging properties of soil - Google Patents

Description

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The invention relates to the construction of buildings and structures on subsiding soils by soaking them.

There is a method of eliminating the subsidence properties of the soil, including a passage of the pit, drilling in the area of the pit of wells, filling them with drainage material and supplying water to the pit with soaking soil 1.

The closest to the present invention is a method for eliminating the subsidence properties of the soil, including a pit passage, the formation of wells, filling them with filtering material, laying the drainage layer, and water supply with soaking 2D soil.

The disadvantage of these methods lies in the significant costs of soaking due to the high consumption of water resulting from the spreading of water in the lower layers of the strengthened array beyond the work area and evaporation from the pit and

soil surface, which also contributes to slowing down the process of soil strengthening and excludes the possibility of applying the proposed method near the foundations of the buildings and structures in use.

The purpose of the invention is to increase efficiency by speeding up the process of strengthening the soil and reducing the cost of soaking the soil.

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The goal is achieved by the fact that in the method, including the passage of the pit, the formation of wells, filling them with filtering material, laying the drainage layer and feeding

"S soaking water, before the formation of a well, a drainage layer is laid and a compacted soil cushion is erected.

At the same time, after the construction of the compacted soil cushion, it is loaded.

Claims (2)

The drawing shows a reinforced soil massif, a transverse section. 3 The method is carried out in the following sequence. At the work site with the help of earthmoving equipment, excavation pit 1 is detached, the dimensions of which are determined by the area of the building or structure. Then, a drainage layer 2, mainly of sand, is placed on the bottom of the boiler 1 and a compacted soil cushion 3 is erected on it, the height of which is taken so that after the subsidence of the soil its top is at the level of the base of the foundations. After that, through the compacted soil cushion, the drainage layer 2 and hardened mass 4 drilled wells 5, the lower hour of which is filled with drainage material to the soil cushion 3, and in the upper part of the wells 5 I install casing 6 with fixing them by filling the annular space cement or clay mortar. Alternatively, casing 6 of conical shape can be applied, forcibly immersed in cushion 3. Casing casing 6, after their installation, are interconnected by means of an annular pipe 7, and between wells 5 the weight 8 is laid as the latter loads In the wells 5 thus prepared, the pipeline 7 begins to supply water under some pressure, which, penetrating through the porous material, enters the strengthened soil and moistens it, while the water spreading zone, limited by line 9 in the drawing, lies below the zone of distribution of water, limited by line 10 by a known method. As a result of the soaking and the impact of the weight of the soil cushion 3 and the weights 8, it is hardened, the array of soil is deposited and compacted. Such an embodiment of the method requires less water to soak the soil and speeds up the process of soaking it, which allows to speed up the production of works and reduce the cost of their implementation. Claim 1i. A method for eliminating subsidence properties of a soil, including a pit excavation, formation of wells, filling them with a filtering material, laying a drainage layer and supplying water with a soaking soil, so as to enhance the effect of accelerating the process of soil strengthening. and reduce the cost of its soaking, before the formation of wells, a drainage layer is laid and a compacted dirt cushion is erected. 2. The method according to claim 1, of which is applied so that, after the construction of the compacted soil cushion, it is loaded. Sources of information taken into account in the examination 1. Guidelines for the design of the bases of buildings and structures. M., stroiizdat, 1977, p. 237. 2, Sealing subsided pyvtov. Ed. V.I. Krutovl. M., stroiizdat, 197, p. P6-P9. N.