RU2141019C1 - Method to lay barrier preventing spread of oil and oil products over water surface - Google Patents

Abstract

FIELD: environmental protection, protection of surface of river from spread of oil pollution. SUBSTANCE: barrier is assembled on river bank from sections with unloading rope, is lowered on to water and set at angle towards direction of stream of river o prevent spreading oil. One end of additional supporting rope is transferred to the other bank of river and is attached to dump mooring, its other end is connected to drawing mechanism and supporting rope is pulled. Then unloading rope of barrier is linked to supporting rope and is pulled along it. Front end of unloading rope is attached to dump mooring after barrier has closed river area and is tightened. This approach makes it feasible to avoid sagging of barrier during laying and prevent leakage of oil beyond limits of barrier. It can be used on large rivers with high stream speeds. EFFECT: improved efficiency of method. 8 dwg

Description

 The invention relates to the protection of the environment, namely to protect the surface of rivers from oil pollution in the presence of currents, and can be used when installing fencing to prevent spreading of oil and oil products on the surface of the water.

 A known method of installing a device for collecting oil from the surface of the water by deploying a floating fence along a river with a cable (SU 1521822 A1, 15.11.89).

 The disadvantage of this method is that it can be used only on small rivers, since on rivers with a high flow rate, a large rope thickness and, accordingly, a large power of the traction mechanism are required.

 Closest to the proposed method is a method of installing a fence to prevent spreading of oil and oil products on the surface of the water, including assembling on the river bank fences from sections with a discharge rope, attaching the front end of the discharge rope of the fence to a dead anchor on the opposite bank, lowering the fence into the water, pulling unloading rope and installation of fencing at an angle to the direction of the river flow with the formation of the overlap of the river (SU 1465488 A1, 03/15/89).

 The disadvantage of this method is that it can only be used on small rivers with a low flow rate, since with a fence length of more than 100 m and a flow velocity of more than 1.5 m / s, the fence can break. In addition, during the installation of the fence, if there is a delay when it is deployed, a deflection ("pocket") may occur - an unacceptable position of the fence, in which funnels are formed in the "pocket" zone that capture the trapped oil from the surface of the water and pass it outside the fence . The straightening of the "pocket" by excessive rope tension is not allowed, as this can lead to the rupture of the fence.

 The objective of the invention is to increase the reliability of the installation method of the fence and expand the scope of its use.

 The problem is solved in that in the method of installing a fence to prevent spreading of oil and oil products on the surface of the water, including the assembly on the river bank of the fence from sections with a discharge rope, attaching the front end of the discharge rope of the fence to a dead anchor on the opposite bank, lowering the fence into the water, pulling the unloading rope and installing the fence at an angle to the direction of the river flow with the formation of the overlap of the river, according to the invention, to the dead anchor o attach the support rope, pull it, and before launching into the water, the unloading rope of the fence is attached to the support rope and extend the fence along it, and the front end of the discharge rope is attached to the dead anchor after the river is blocked by the fence.

The proposed method is illustrated by drawings, where
in FIG. 1 shows one section of the fence
in FIG. 2 is a section AA in FIG. 1,
in FIG. 3 is a view B in FIG. 1,
in FIG. 4 is a section BB of FIG. 1,
in FIG. 5 - node G in FIG. 2
in FIG. 6 is a diagram of the installation of fencing,
in FIG. 7 is a section DD in FIG. 6
in FIG. 8 is a view E of FIG. 6.

 The guard consists of sections, each of which contains a cloth 1, an inflatable chamber 2, an unloading rope 3, guards 4 with overlays 5, loops 6 and crutches 7. The cloth 1 of the section has a cylindrical upper part with an inflatable chamber 2 and a flat lower the part ending in pocket 8. For filling the chamber 2 with air, valves 9 are mounted in it. The fencing is connected to the support cable 10 by means of carabiners 11 and earrings - 12 with rollers 13, and the brackets 14 are designed to connect the sections and I.

 Installation of fencing to prevent spreading of oil and oil products on the surface of the water is as follows.

 The fence, consisting of sections, is collected on the shore. For this panel 1 sections of the fence are interconnected by applying one to another sealants 4 and making a twist. Twisted sealants 4 are covered with plates 5 and with the help of loops 6 and crutches 7 connect plates 5 to each other. The fence sections are connected to each other using brackets 14. To bring the fence into working condition, inflatable chambers 2 are filled with air through valve 9.

 One end of the carrier rope 10 is transported by boat to the opposite bank of the river and secured to a dead anchor. Its other end is connected to the traction mechanism and the support rope 10 is pulled passing through the river (Fig. 6).

 The unloading rope 3 of the fence is attached to the supporting rope 10. The unloading rope 3 of the fence is pulled along the supporting rope 10 to form a barrier over the river and the front end of the unloading rope 3 is attached to the dead anchor.

 The proposed method of installing a fence to prevent spreading of oil and oil products on the surface of the water avoids the formation of a deflection ("pocket") of the fence during its installation and thereby eliminates the passage of oil and oil products outside the fence, which increases the reliability of the installation of the fence. In addition, the proposed method allows you to install fences on large rivers, as well as on rivers with high flow rates, which expands the scope of its use.

Claims (1)

 A method of installing a fence to prevent spreading of oil and oil products on the surface of the water, including assembling on the river bank fences from sections with a discharge rope, attaching the front end of the discharge rope of the fence to a dead anchor on the opposite bank, lowering the fence into the water, pulling the discharge rope and installing the fence under angle to the direction of the river flow with the formation of the overlap of the river, characterized in that the supporting anchor is additionally attached to the dead anchor, stretched first, and before launching into the water, the unloading rope of the fence is attached to the supporting rope and the fence is pulled along it, and the front end of the unloading rope is attached to the dead anchor after the river is blocked by the fence.

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