RU2313631C1 - Method for deepened structure mounting - Google Patents

Abstract

FIELD: hydraulic structures, particularly power, transport, irrigational and other structures, namely deepened structure erection, reconstruction or repair.

SUBSTANCE: method involves installing panels for predetermined depth, wherein the panels have inner cavity and orifices preferably created in one front and side surfaces and are communicated with inner cavity; connecting panels with each other by means of device formed as guiding sliding lock; pouring hardening water-resistant material, preferably cement mortar, under elevated pressure inside panel cavities for wall sealing and/or consolidation; installing panels so that front sides thereof having orifices face ground or underground water flow or hydraulic structure leak flow; additionally providing the panels with heads having sharpened edges; installing panels so that panel projects over ground surface for 0.5-1.0 m; reinforcing the panels with longitudinal metal structures and concreting thereof to obtain solid reinforced concrete wall.

EFFECT: increased strength, service life and service reliability of structure erected in any ground type along with simplified assemblage.

6 cl, 2 dwg

Description

The invention relates to hydraulic engineering, facilities for energy, transport, land reclamation and other purposes, in particular to the construction, reconstruction or repair of buried structures.

There is a method of reinforcing recessed support structures (RF Patent No. 2179214, E02B 1/00, publ. 02/10/2002), in which the pits are excavated in the soil outside the support structure, the bearing elements are made in the pit area by screwing the pipes into the soil by spiral winding, filling the pits with a fixing hardening mixture and performing the connection of the bearing elements with the supporting structure.

The disadvantage of this method is the need for excavation when digging pits with their filling, for example, concrete. These jobs are expensive. In addition, the implementation of such work is often difficult, in particular, with leaks in buried structures or in areas with a high content of groundwater and groundwater, because it is necessary to provide waterproofing of the installation zone, to pump water from pits.

There is a method of installation and repair of buried structures (E.G. Godes. Underwater construction works. Reference book. L., Stroyizdat (Leningrad branch), 1974, p.132-134), in which a trench is excavated in the ground or a foundation pit of the required size , strengthen their walls and fill with concrete using vertically moving pipes. Pipes for supplying a solution are installed before filling with stone or gravel. The solution is poured simultaneously through the receiving funnel into all pipes. The pipes are buried in the stacked mortar. As the level of the mixture rises, the pipe is lifted (moved) vertically upwards so that its lower end is constantly in the concrete mixture.

In this way, installation of buried structures can also be carried out under water. The structures made in this way can be used in the construction, reconstruction and repair of hydraulic structures. However, with this method, it is necessary to carry out excavation work, additionally strengthen the walls of trenches and pits, which makes this method laborious and expensive. In addition, the quality of the mixture in the peripheral areas of each pipe is slightly lower than in the middle zone, which leads to heterogeneity of properties and a decrease in the reliability of structures made by this method.

There is a method of mounting buried structures using Larsen sheet piles (Foundations and foundations. Short course. Edited by N. Tsytovich. Textbook for construction universities. M., "Higher School", 1970, p. 358-359). Sheet piles having a trapezoidal profile, on both sides of which grooves are made, are driven into the ground. The adjacent tongues are turned one over the other by 180 ° and interlocked by inserting into each other's grooves. Thus, a continuous steel wall is obtained. With the help of such a wall you can protect any part of the area, for example, from water, landslide, land, etc. For example, in bridge construction, during the construction of bridge piers, a closed ring is made of Larsen's dowels, something like a giant steel pipe. The water inside is pumped out. Further inside the pipe are building work.

This installation method is simple, does not require excavation, can be used in various soils, including those with high moisture content. However, the strength, durability and operational reliability of structures made in this way are not high, since the tightness is achieved no more than 85% and during prolonged use with various combinations of loads and impacts the sheet pile wall can be deformed, the tongue grooves are broken, which leads to violation of strength and tightness walls with its possible subsequent destruction.

The claimed invention allows to eliminate these disadvantages, to increase the strength, durability and operational reliability of mounted structures in various soils while ensuring ease of implementation of the installation method.

The technical effect is achieved by the installation method of buried structures, in which the panels are installed to a predetermined depth, while the panels are made with an internal cavity and holes mainly in one front and side surface connected to the internal cavity, they connect the panels to each other into the wall and are fed into the internal cavities of the panels a solution of hardening waterproof material under pressure to seal and / or strengthen the wall.

Install panels with a frontal surface with openings to meet the flow of groundwater or groundwater or leaks of hydraulic structures.

The panels are interconnected by a device mainly of the type of guiding slide lock.

The panels are additionally provided with a sharp-edged tip.

Mostly cement mortar is fed into the inner cavities of the panels.

Install panels with the ground part of 0.5-1.0 m, strengthen them with longitudinal metal structures and concrete in the form of a monolithic reinforced concrete wall.

The panels are installed at a given depth mainly by the method of driving without opening the ground, which allows installation in various soils, as preliminary excavation and waterproofing are not required. The addition of panels with sharp-edged tips facilitates the penetration of panels into the ground.

The panels are made with an internal cavity and holes in one frontal and lateral surface connected to the internal cavity, while the surface opposite the frontal one does not contain holes. This allows you to apply a solution of hardening waterproof material under pressure into the soil to the required depth and fill voids, caverns or water cores, displacing water from them. The presence of the front surface of the panels without holes allows stopping the movement of water in the underground layers for a time sufficient for the solidification of the material supplied to the cavity to freeze, and eliminates the possibility of its erosion and entrainment by water. Install panels mainly with a frontal surface with openings to meet the flow of groundwater or groundwater or leaks of hydraulic structures, because in this case, the hardening waterproof material will fill the voids, cavities or water cores in front of the wall, which will eliminate the movement of water along the wall and prevent the formation of gaps.

The panels are connected to each other in a wall by a device of the type of a guiding lock, which ensures the strength and reliability of the structure. In addition, a solution of hardening waterproof material penetrates from the internal cavity of the panel through the holes in the side surface of the panel into the gaps of the guiding slide lock and, when solidified, reliably seals the panel joints.

Thus, the supply into the internal cavity of the panels of a solution of a hardening waterproof material, for example cement mortar, under pressure, together with the design of the panels, provide reliable sealing and / or strengthening of the wall.

Installing panels with a ground part of 0.5-1.0 m, reinforcing them with longitudinal metal structures and concreting in the form of a monolithic reinforced concrete wall gives strength to the entire structure.

No significant new features of the claimed invention were found in the scientific and technical literature, the proposed solution does not follow explicitly from the prior art, and the combination of features provides new properties. This allows us to conclude that the claimed solution meets the criterion of inventive step.

Figure 1 shows the layout of a buried structure (barrier wall) to eliminate leaks from a bulk dam;

figure 2 presents the frontal projection of the barrier wall mounted in the ground (type aa);

figure 3 presents the cross section of the barrier wall (BB), where

1 - panel;

2 - the internal cavity of the panel;

3 - holes in the front surface of the panel;

4 - guiding skid T-shaped lock;

5 - tip;

6 - pipe;

7 - soil;

8 - cement plug;

9 - bulk dam;

10 - a reservoir;

11 - leaks, groundwater.

The implementation of the method is considered on the example of the installation of a buried structure (barrier wall) to eliminate leaks of the bulk dam (9) of the reservoir (10). Panels (1) are driven into the soil (7) to a depth exceeding the level of leaks and groundwater (11). The panels are made with an internal cavity (2) and holes (3) in one frontal and lateral surface connected to the internal cavity (2). The panels are connected to each other in the wall by guides of sliding T-shaped locks (4). The panels are additionally provided with a tip (5) with a sharp edge.

Install panels (1) with a frontal surface with holes (3) to meet the flow of groundwater or groundwater or leaks (11).

Through the pipe (6) serves in the internal cavity (2) of the panels (1) cement mortar under a pressure of 15-20 atmospheres.

The cement mortar is squeezed out of the internal cavities (2) through the holes (3) of the front and side surfaces of the panels (1) and fills voids, cavities or water cores, displacing water from them and forming cement plugs (8). At the same time, the cement slurry penetrates from the inner cavity (2) of the panel (1) through the holes in the side surface of the panel (not shown in the drawings) into the gaps of the T-shaped lock (4) and, when hardened, reliably seals the joints of the panels (1).

Since the surface of the panels, opposite the front, is made without holes, a barrier is created for the movement of water in the underground layers for a time sufficient to completely harden the cement, and eliminates the possibility of erosion and entrainment of water.

Install panels with the ground part of 0.5-1.0 m, strengthen them with longitudinal channels and concreted in the form of a monolithic reinforced concrete wall with a thickness of 0.5 m and a height of 1.5 m and above (not shown).

For the installation of the barrier wall, panels 0.5-0.6 m wide, 6 m long and a maximum thickness of 0.15 m were used. The panels were made of a steel pipe with a diameter of 150 mm with longitudinal ribs, which ensures their rigidity. Holes in the frontal and lateral surfaces were made with a diameter of 30 mm uniformly over the entire surface.

Mounted by the claimed method, the barrier wall provides the necessary strength and operational reliability. Estimated life of 150 years.

Claims (6)

1. The method of installation of buried structures, characterized in that the panels are installed to a predetermined depth, while the panels are made with an internal cavity and holes mainly in one frontal and side surface connected to the internal cavity, the panels are connected to each other into a wall and fed into the internal cavities panels a solution of hardening waterproof material under pressure to seal and / or strengthen the wall. 2. The method according to claim 1, characterized in that the panels are installed with a frontal surface with openings facing the flow of groundwater or groundwater or leakage of hydraulic structures. 3. The method according to claim 1, characterized in that the panels are interconnected by a device of a predominantly guiding lock type. 4. The method according to claim 1, characterized in that the panels additionally provide a tip with a sharp edge. 5. The method according to claim 1, characterized in that it is fed into the internal cavity of the panels mainly cement mortar. 6. The method according to claim 1, characterized in that the panels are installed with the ground part of 0.5-1.0 m, reinforced with longitudinal metal structures and concreted in the form of a monolithic reinforced concrete wall.

Images