SU987028A1 - Method of consolidating sagging soils - Google Patents

Description

(54) METHOD OF SEALING. VISIBLE

The invention relates to the hardening of subsiding soils, mainly loess, by compacting them by pre-soaking and deep explosions of explosive charges during the construction of foundations and foundations of buildings and structures.

A known method for compacting subsurface loess soils includes soaking through previously drilled wells of the soil to a fluid consistency state, placing explosive charges in the wells and performing a charge explosion 1.

A disadvantage of the known method consists in the fact that after the explosion of charges there remains an incomplete upper layer of soil, which requires additional compaction, which reduces the productivity of the work.

The closest to the present invention is a method for compacting filler soils, mainly loess ones, including the formation of a pit, drilling wells, laying the drainage layer within the pit, feeding water into the soil through it with soaking the latter to a fluid consistency, placing explosive charges in the wells.

the explosion of charges and the measurement of subsidence of the soil 2.

However, the known method is characterized by a long and laborious construction of the drainage layer and insufficient compaction of the upper layer, which leads to the need for additional consumption of expensive materials,

10 and most importantly - increases the duration of the work.

The purpose of the invention is to increase the productivity of the method.

15

The goal is achieved by the fact that according to the method, including the formation of a pit, the drilling of wells, laying within the pit of a drainage layer, the flow through it into the ground

20 water with soaking the latter to the state of flowing consistency, placing explosive charges in wells, carrying out charge explosions and taking drawdown measurements

25, during the period of soaking of the soil, a submersible is erected on the drainage layer, water is supplied with keeping its level, which does not reach the bottom of the weight, and after the measurements of the subsidence of the submerged soil and the draining layer is removed.

At the same time, local soil or evenly located containers with water are used as a prigruz.

The method is carried out in the following sequence.

The plant soil is compacted on a sealed sn1magot b uldozer and using a ramming. Within the bounds of its contour, wells are drilled, charging tubes are lowered in them, a layer of draining material is installed in the pit with simultaneous installation of inventory surface marks for controlling after lowering the surface of the soil, water is fed to the brazier with soaking through the soil layer of the compacting mass and at the same time start dumping with the help of a bulldozer from a local loess soil, while in the layer of drainage uyush .ego material you tserzhivayut water level. no revenue to the bottom conductive prigruza. At the end of the dumping, the priming and moistening of the soil to the state of fluid consistency is lowered into the charging tubes, explosives are charged, and successive single blasts of charges are carried out, as a result of which the compacted soil mass collapses and compresses under its own weight. After the explosion, the upper parts of the charge pipes left in the ground are removed: then post-explosive subsidence of the soil is controlled by leveling with noBepxHOCTHHiNi brands and, after reaching the required stabilization, the weights and the drainage material are removed.

For -size, separate containers, for example made of elastic waterproof material, filled with a liquid, for example water, can be used evenly distributed over the area.

If there is a sufficient amount of local drainage material (sand, gravel, sand-gravel mixture), the load can be made of this material.

The application of the proposed method in practice enables the simultaneous execution of the soaking of the primer and the erection of the weights, which makes it possible to accelerate the execution of the work and at the same time reduce the consumption of the draining material.

Claims (3)

1. Method of compaction of subsiding soils, mainly loess, including the formation of a pit, drilling of wells, laying within the pit of a drainage layer, supplying water through it into the soil with soaking the latter to a state of fluid consistency, placing explosive charges in wells, exploding In order to increase the productivity of the method, in the period of soaking of the soil, the weights are erected on the drainage layer , The flow of water lead to vscher (Zhivaniem its level does not reach to the bottom prigruza present, and after performing subsidence measurements performed .prigruza removing and draining layer 2. The method according to claim 1, rlichlich and with the fact that as a prigozu use local soil. 3. Method according to paragraphs. 1 K 2, characterized in that uniform containers with water are used as a prigruz. Is: data points taken into account during the examination 1. Copyright certificate USSR № 18313.1, cl. E 02 D 3/10, 1963. 2, Methodical recommendations for the accelerated compaction of the Slump locks E {high-power soils by preliminary soaking and deep-seated explosions. Kiev, Scientific Research Institute SP Gosstro of the USSR 1977, p. Il-i9, 48.