SU1701803A1 - Mudflow protection structure - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to hydraulic engineering, in particular, to structures for regulating selenose beds. The purpose of the invention is to increase the operational reliability of the device. The device consists of two obstacles sequentially placed across the selenos bed from the downstream side, one distance from the other. The first obstacle in the direction of movement of the mudflow is made through. The second obstacle is made in the form of a stepped wall curved in plan in the form of a continuous curved wall in the plan of the downstream. The wall is directed by a bulge in the direction of the upstream and collected from recycled tires, mounted on piles, vertically mounted at the bottom of the channel. Bottom tires, with one edge of their inner diameter on the side of the upper pool, abut against piles. The upper tire covers with their opposite edge of the inner diameter are fixed to their feet with the help of clamps from the downstream. Intermediate tires are loosely mounted on piles and secured to each other, with the upper and lower asbestos covers by means of a filler located in their cavities. Anti-resettlement device operates as follows. When passing through the mudflow channel, liquid runoff and fine sediments pass through the first pregrgdu. To prevent erosion of the base of the first obstacle during the passage of high-power mudflow, a second obstacle is installed. 1 hp f-ly, 4 ill. Yo

Description

The invention relates to hydraulic engineering, in particular to structures for regulating selenos beds.

The purpose of the invention is to increase the operational reliability of the device.

Figure 1 shows a spruce bed with an anti-settlement device; figure 2 is the same, the view in the plan; Fig. 3 shows an elastic precast column filled with a solid insoluble mass, the cross-section in Fig. 4 is a schematic view of the strengthening of the bank of the channel with stepped utilized tire covers, a plan view.

The anti-settlement device consists of obstacles 1 and 2 located on the side of the downstream. Barrier 2 is made in the form of an inclined curvilinear wall of elastic material 3, curved convexity in the direction of the upstream towards obstacle 1,

As an elastic material can be used recycled tires, mounted on vertical piles 4..

Tires attached to the pile m 4 as follows.

00

about

SA)

The lower element 3, with its edge of the inner diameter on the side of the headwater, abuts the pile A with the opposite edge of the inner diameter on the side of the downstream. Resistance to shear intermediate elements 3, installed stepwise from the downstream, provides for the expense of aggregates - stones 5 in the cavity,

Barrier 2 is placed across the selenos bed and at a distance of Li + Lnp, where Li is the flight length of the jet stream; Lnp is the length of the perfect leap flow,

Anti-resettlement device operates as follows.

When passing along the mudflow channel, barrier 1 perceives loads of various kinds: the pressure of the flow on the structure as a whole, the impact of the large components of the mudflow. Through barrier 1, liquid runoff and fine sediment are flowing. With the passage of the mudflow, the power can also be poured over obstacle 1. In these cases, the lower reach of the river bed is washed away with extensive washing out of the base of obstacle 1, which leads to the destruction of its structure.

To prevent this, from the downstream side, obstacle 2 is set at a distance from the height (where hH is the depth of the stream in the downstream, and the ratio hn

 ) 3.2

The parameters Li, Lnp, h () are determined on the basis of the hydraulic calculation,

When the mudflow passes through the anti-mudflow device, it is gradually filled with sediments, also increasing its stability and reliability.

. To eliminate the possible spreading of the banks along the width of the channel and the breakthrough of the stream to form a secondary channel, the banks are also strengthened by inclined tire covers (Fig. 4).

The inclined walls in the direction of the flow is associated with a decrease in the pressure of the pressure on the walls and an increase in the compliance of the obstacle 2 due to the large deformability of the tire covers.

The curvilinear outline of the wall of the obstacle 2 is associated with an increase in the bearing capacity of the wall due to the arched effect redistributing the flow pressure.

between racks along the entire length of the wall, Depending on the size of the channel width, curved walls may have several intermediate supports along the width of the channel.

No costly measures are required (proper downstream reinforcement), i.e. construction of material-intensive water wells or water plates, installation of gabion masonry covered with asphalt mastic and

etc.

Claims (1)

1. An anti-settlement device consisting of several obstacles placed in series across the selenos bed from the downstream side at a distance from one another, while the first barrier in the direction of movement of the mudflow is made through, differing from operational reliability, following in the direction of movement of the mudflow, the barrier is made in the form of a curvilinear the plan is a continuous stepped wall, while the wall is directed by a bulge toward the upstream and is assembled from recycled tire covers, mounted on vertically mounted at the bottom of the channel piles. 2, The device according to claim 1, about tl and h and y e with the fact that the lower tire covers mounted on piles with one edge of the inner / left diameter from the top the tail is pressed against the piles, and the upper tires are placed on the opposite edge of the internal meter on the pile with the help of flexible clamps from the bottom bofe, with intermediate the tires are loosely mounted on the piles and fixed between themselves, with the upper and lower tires, by means of a filler located in their cavities. Figz Fig