SU983175A1 - Method of working river bed in a deep cavern - Google Patents

Description

(54) SPECIAL DEVELOPMENT OF A HOSE IN THE DEEPEN OF THE INVENTION The invention relates to the technology of production by means of hydromechanization during the construction of channels of canals, collectors and other grooves. There is a known method for developing a channel &&; pressure head; water flow, according to which the pioneer iponycKatoT trench has a water flow, and 1 fidonic flow layers, saturated with erosion products, are separated and directed through drainage channels into natural tanks C1 1 Negligible for this method is the impossibility of developing deep grooves under conditions of small slopes, and the need for natural lows near the bed path. There is also a known method of developing a channel, including developing a hole, washing it out with a non-pressure flow of water and withdrawing spill products from the lower part of the trench with G21 dredgers. There is not enough of the known method of building a channel in a deep excavation to reduce the flow rate of water. . i.el iso ethesh — increasing efficiency by increasing the bottom slope of the eroded trench section. The goal is achieved by raising a jumper downstream of the troughs, 1PRODUCTURES moving the dredges upstream, erasing the bottom of the trench, and lowering the water level in the lower part of the trash, sucking water through a washer. , FIG. 1 shows a raerabogka scheme, top view; in fig. 2 - resolve AA in FIG. I. The method is performed by the following procedure. Preliminary, along the channel of the channel, passing through a deep excavation, they lay a tunnel trench 1 to the developed section 2 of the channel, in which they arrange a temporary bridge 3 with a spillway 4. channel, where it is deposited and sucked by dredgers 6, which simultaneously with the absorption of diffuse soil are developing the lower part 7 of the excavation of the channel into the depth and forward towards the flow of free flow 5. The clarified water is dumped through the spillway construction .4 into the developed section 2 of the ruspa, regulating the level of water 8 in the lower part of the channel cavity.

As the bottom 7 of the channel is dredged, the water level 8 in it is lowered to the maximum aopusma height of the surface part 9 of the bottom of the dredges 6. Underground depletion 1O is developed with dredgers 11. After working with dredgers 6 and 11 of the dredging section down to iqjoeKTHoro bottom 12 8 water in the lower part 7 of the channel excavation is scooped up and the technical process is repeated.

Thus, W) in the development of a channel in a deep excavation due to the maintenance of a difference in water levels; reducing the length of the excavation section developed by a pressureless flow of water, effective erosion of the soil in the pioneer trash e is possible. In addition, dredgers develop the soil in a deep excavation above the water, answering 351rd safety precautions.

When developing a channel in a deep excavation, the effect is achieved due to erosion.

a significant amount of soil free flow of water, which increases 1) dehumidification of dredgers in connection with the development of a significant amount of soil already eroded, as well as by reducing the amount of work on the construction of temporary jumpers and | phototy in the organization of water supply means of hydromechanization.

Formula {From Egeny

Way to develop the channel. in a deep excavation, including the development of a pioneer trash, washing it out with a pressureless stream of water and discharging the products of erosion from the bottom, letting dredge dredgers, characterized in that, to increase efficiency by increasing the slope of the bottom of the section to be stretched, below The jumper, the upsmiths are moved upstream, scouring the bottom of the trench with them, and the water level in the lower part of the trench is lowered, dropping water through the pebble point.

Sources of information taken into account in the examination

1.Avterskoe certificate of the USSR №629280, cl. E O2 B 5 / O2, 1978.

2. USSR author's certificate number 540959, cl. Е 02 В 5/02 1973 ((photo type).

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Claims (1)

A way to develop a channel? in a deep excavation, including the development of a pioneer trench, washing it out with a free flow of water and removing the erosion products from the bottom of the trench with dredgers, characterized in that, in order to increase efficiency by increasing the slope of the bottom of the eroded section of the trench, downstream of the dredgers erect a jumper, dredgers move upstream, washing out the bottom of the trench, lower the water level in the lower part of the trench, dumping water through the jumper.