SU1355657A1 - Method and apparatus for constructing counter-seepage diaphragm - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to hydraulic engineering. The purpose of the invention is to reduce costs by reducing the volume of the diaphragm and reducing construction time. The device includes suspended from the boom 1 of the lifting mechanism 2 by becoming pipes, made of two branches 3 and 5. Branch 3 ends in a vertical nozzle, and branch 5 ends in a horizontal nozzle. In the upper and lower parts of the branch 3, guides were strengthened, and on (L 00 ate O5 ate

Description

branches 5 are sliders installed with the possibility of interaction with guides by covering the latter. To prevent the sliders from disengaging from the guides at their ends, the stops are fastened in the form of bolts with washers. Above the horizontal nozzle, a triangular plate 10 is attached to the branch 5 at the end of which 13, the vertical probe 1 is fortified, the trench is opened by the process. 17 under the protection of the mud. In the bottom of the trench with vertical power nozzle, raz1

FIELD OF THE INVENTION The invention relates to hydraulic engineering.

The purpose of the invention is to reduce costs by reducing the volume of the diaphragm and reducing the construction time.

Figure 1 shows a longitudinal section of the veil; figure 2 is the same cross section; fig.Z - the same plan; figure 4 is a view of the mounted device; in FIG. 3, node 1 in FIG. 6, - the upper part of the hinged device; figure 7 - node And figure 4; on Fig - nozzle attachment; figure 9 is a view of the limiter of the lower part of the hinged device.

The device includes suspended from the boom 1 lifting mechanism 2 becoming pipes, made of two branches. Branch 3 ends with a vertical nozzle 4, and branch 5 with a horizontal nozzle 6. In the upper and lower parts of the branch 3, guides 7 are fixed, and on branch 5, sliders 8, installed with the ability to interact with the guides 7 by covering the latter. To prevent the sliders 8 from disengaging from the guides 7 at their ends, the stops 9, made in the form of bolts with washers, are fastened. Above the horizontal nozzle 6 to the branch 5 is attached a triangular plate 10, at the end of which a vertical probe 1 is fixed

55657

bored at the end of the branch 3, form wells 18 and 19. Between the wells, slits 20 are cut by lowering the branch 5 with a horizontal nozzle, from which the stream of fluid flows. The control of the diaphragm continuity is carried out by vertical movement of the plate 10 and the probe 11 while

cutting the slit 20, as well as by moving the probe 1 1 horizontally within the slit 20 of the stop to the ground pillar when the device is moved from the well to the well. 2p.p. Зз.п. f - ly, 9 ill.

Plate 10 is placed in a plane passing through the longitudinal axes of the branches 3 and 5 of the pipe.

This probe 11 may terminate with a downward nozzle 12 connected to a hollow of branch 5.

A jet of fluid to the nozzles 4 and 6 is fed along the internal cavities of the branches.

3 and 5 of the pipe. The device can use coaxial nozzles 13, in which a jet of liquid is supplied through the internal channel 14, OK-V to the gun ring channel 15, for

supply from; air; In the case of using coaxial nozzles 13, additional channels 16 are provided inside each of the branches 3 and 5 of the tube.

The method is carried out as follows.

First, using earth-moving equipment (not shown), the trench 17 is torn off under the protection of clayey

solution. Further, in the bottom of the trench, a well 18 is formed by several i-loading of branch 3 when fluid flows out of the vertical nozzle 4. Several dives are necessary to ensure that probe 11 penetrates this first well when vertical nozzle 4 of branch 5 of the next well 19 is formed.

After the formation of the second well 19, a jet is cut through the jet coming out of the horizontal nozzle 6.

 to the top of the reservoir of the reservoir, while the shupi 11 is immersed in the well 18. To cut the next section of the slit, the horizontal nozzle 6 is raised above the bottom of the trench 17 and the device is moved to abut the probe II. form the next well 21 by lowering the branch 3 to a depth below the roof of the reservoir, not & longer than the probe. Then, with the help of a jet flowing from the horizontal nozzle 6, the next section of the gap between the wells 19 and 21 is cut through by lowering the branch 5.

Thus, cutting the slit is done from the top down, and the mud in the trench 17, as the wells and the slits are formed, fills them and mixes with the soil to be destroyed, creating a reliable waterproof diaphragm.

When gaps and wells are formed, they are double monitored. First, when a gap is formed, the plate 10 and the probe 1 are lowered, which intersect the entire area of the gap formed and the previous well. Secondly, after the nozzle 6 is raised above the bottom of the trench 17, the probe I1 is horizontally displaced within the previously formed gap to the stop in the ground rear sight. These operations serve as a guarantee for ensuring the integrity of the diaphragm-t we.

Water or mud may be used as a fluid to form wells and gaps. In the latter case, it is advisable to select the solution by pump directly from Tpamneii 17 (pump not shown).

When constructing the diaphragm in unstable soils, silting of the lower parts of the wells 18, 19, 21 may occur, which makes it difficult to immerse the probe in them. ii. In this case, the probe 11 can be equipped with a nozzle 12 for supplying a jet of fluid to facilitate its immersion. The nozzle 12 is connected to the cavity of the branch 5 of the pipe.

Claims (5)

Formula of Absorption I. A method of constructing an antifiltration diaphragm, including digging a trench under the protection of a clay solution, filling it with an anti-filtration material and monitoring diaphragm continuity, characterized in that, in order to reduce costs by reducing the size of the diaphragm and reducing construction time, the lower part The Q diaphragms are constructed by successive formation of vertical wells below the bottom of the trench and the gaps between them using vertical and horizontal liquid jets, when the wells between the wells are formed in the downward direction, and the integrity of the diaphragm is controlled by placing a plate with a vertical probe inside it. Q at the end and the subsequent movement of the plate and probe within the diaphragm, while their vertical movement is made during the formation of cracks, and horizontal - during 5 m between the end of the formation of the previous slit and the beginning ABOUT formation of a subsequent well. 2. Method POP1, characterized in that mud quality is used as 0 liquid, which is withdrawn from the trench. 3. The method for pi l I n 2, about t l and - due to the fact that, when gaps form between the wells, the end of the vertical probe serves a downwardly directed liquid stream under the bottom of the NII. 4. A device for the construction of an anti-filtration diaphragm, including the installation of pipes with vertical and horizontal coaxial nozzles, characterized in that the pipes become made of two branches, one of which is connected to the vertical nozzle, and the other interconnected with each other with the ability to move along the longitudinal axes of each other with the help of a guide fixed on the branch of the vertical nozzle, and interlock: 0 operating with a guide slide fixed on the branch of the horizontal nozzle, the latter is equipped with a plate placed above the horizontal nozzle in a plane passing through the longitudinal axes of the branches, and a “vertical probe placed at the end of the plate. 5. The device according to claim 4, characterized in that the chao probe is provided 13556576 a vertical nozzle placed on the horizontal bottom-end pipe with a branch of the pipe and a hydraulically connected nozzle. FIG. 2 /; X7 fig -ABOUT. fig.Z fig 5 4 1 7 8 ten eleven   m fi & .b fiev Editor I. Segl Nick (rig 9 Compiled by A. Kozlovsky Tehred A. Kravchuk Proofreader M. Sharoshi Order 5754/26 Circulation 607 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4