SU1209749A1 - Method of constructing earth-fill dam fith film-type core wall - Google Patents

Description

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The invention relates to hydraulic construction and can be used in the construction of earthen dams, dams with anti-filtration membrane diaphragms.

The purpose of the invention is to increase the efficiency of work.

Figures 1 to 5 show the structural elements of the dike floor and the diaphragm section, as well as the sequence of technological operations for the construction of the building.

The method for constructing a film diaphragm dam is as follows.

Soil is poured in Rus 1 over the previously laid Rus 2. On the surface of Rus 1 or the soil foundation (at the beginning of the construction of the dam, markers 3 and 4 (Fig. 1) are laid out on the contour of trench 5. The design position of trench 5 is shifted relative to the route 6 the movement of the gshen-koukladchik towards the lower slope 7. At the same time, the distance between the pole 3 and the track 6 establishes no less than the design value of the overlap of the sections 8 of the diaphragm under construction (fig. O and not more than 0.5-1 m) for construction.

A grader 5 with a depth of about 10 cm on the surface of the tusk 1 (Fig. 2) is cut with a grader or bulldozer with a slanting rotary blade. Trench 5 is filled with filter 097A92

.9 material, such as clay, by moving the clay-loaded scraper along trench 5 with the valve open.

five

Along the leveled surface of the anti-filtration material 9, the section 8 is stacked by a stacker of vertical film screens. With this section 10, section 8 is stacked to form a ridge 10 that is 10-30 cm above the surface of the anti-filtration material 9.

15 By working movement of the grader, lateral displacement of the antifiltration material 9 is made from the lower slope 7 to the upper slope 1 of the dam under construction. With

20 of this counter-filtration material 9 takes the form of a roller, inside of which a ridge 10 is displaced to the side of the upper slope 11. Offset of the upper edge of the section

25 diaphragms and sprinkling it from all sides with proto-filtration material contribute to the fact that this edge is very close to or adjacent to the lower edge of the located section of the diaphragm during the construction of the next train, while the junction of two sections of the diaphragm is surrounded by anti-filter material from all sides . This contributes to an increase in the filtration efficiency of the diaphragm.

g

FIG. 2

F

Phg / g 5

Claims (1)

METHOD FOR STRUCTURING A SOIL DAMG WITH A FILM DIAPHRAGM, including erecting a diaphragm from sections with a trenchless stacker of vertical film screens by working moving the stacker along the surfaces of successively dumped tiers of a dirt dam with lateral displacement of the route of the subsequent working movement of the stacker relative to the previous one to the previous side to the previous side that, in order to increase the efficiency of work, on the surfaces of the successively dumped tiers of the dam with side mixing iem relative movement of the working runs stacker toward the downstream dam built by cutting trenches produce a maximum depth of 10 cm, followed by filling the trench impervious material in the form of clay ,, wherein the stacking sections of the diaphragm _'of the working is effected by displacement in Nia stacker on the surfaces of trenches filled with antifiltration material, when protruding above the surfaces of the antifiltration material at 10-30 cm the upper edges of the sections of the diaphragm, which are displaced to the sides dam and the upstream impervious material sprinkled by the working movement along the trench digger. FIG. 1