SU1740520A1 - Method of preparing structure foundation on weak water-saturated soil - Google Patents

Abstract

Usage: construction, preparation of grounds for engineering structures on wetlands. SUMMARY OF THE INVENTION: The method includes dumping a cushion of drainage material, making charge cavities to form squares in planes and placing vertical charges of explosives in them, making drainage-1 wells with water receivers at the intersection of the squares and in the center of their sides, moreover, perforated pipes are used as water intakes. Then, charges are detonated, water intakes are removed from drainage wells, and after the outflow of groundwater, the latter are filled with drainage material. 3 il. C 9 W

Description

The invention relates to construction and can be used, for example, in the preparation of bases for engineering structures in wetlands.

The purpose of the invention is to reduce the time of soil consolidation and reduce the cost of construction.

FIG. 1 is a plan view showing the layout of charge cavities, explosive charges, drainage wells and water intakes in FIG. 2 - the same section; Fig. 3 is a diagram of the development of explosive cavities and the direction of filtration flows during an explosion, section.

The method of preparation of the base sooo. The operation on weak, water-saturated soils is implemented as follows.

On the surface of the base 1 pour pillow 2 from the drainage material. Then, within the base, the entire thickness of the layer of weak soil 1 and cushion 2 is filled with charging cavities (RFP) 3 and drainage wells (DS) 4. In DS 4, water intakes in the form of perforated pipes 5 are placed. along the square grid in the plan, and DS 4, on the lines connecting the adjacent 3P, at a distance equal to them and in the center of the squares formed by these lines. In ZP 3, vertical explosive charges 6 are placed. Explosive charges 6 are produced. Under the action of explosive gases acting in directions 7, in a weak soil 1 vertical cylindrical cavities 8 are formed, filling-vj

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Claims (2)

with the force of the body drainage material pillows 2. The explosive gases, expanding and penetrating into the pores of weak soil 1, displace groundwater and cause its dynamic filtration in directions 9, i.e. towards DS 4. Since DS 4 is passed at the collision points of seepage flows caused by explosions of neighboring charges of explosive 6, this eliminates the destruction of the structure of weak soil 1 in areas adjacent to DS 4. Since the effective hydraulic section of the water receivers 5 is much larger than sand drains, the process of filtration consolidation of the layer of weak soil 1 is significantly reduced in time. After the expiration of groundwater grades, the water intakes 5 are removed and filled with DS 4 with drainage material. The method of preparation of the base structure on weak water-saturated soils five max, mostly peaty and silty, including filling up of cavities and placing in them vertical charges of explosives, sinking drainage wells with water intakes, dumping a cushion of drainage material on the base surface, removing water intakes after groundwater out and filling the drainage wells with drainage material, characterized in that, in order to reduce the time of consolidation of soils and reduce the cost of construction, first fill the cushion of draining material charge dnye a cavity to form in terms of the squares, and drainage wells - at the intersection of the diagonals of the squares and the center of sides, wherein as the receiving water in drainage wells using perforated tubes. J / IM / FҐ T / ixtAtA / D i / i / ) / -a - r DG And h f Sh. -, “U. + w -} ". Sh ..  - - G --- t-tA /. "/ --- U" I .. J j If / gT Г / iVi УГ & JZ 9 & k 5b 7 Fi & .2 and fer k, f, 4 ./N-,h JJL.-I-j - r DG And h f „U. + w -} ". Sh Tnf-1 fe3