Method for the conservation of underwater hazardous object

 

(57) Abstract:

The invention relates to a method of construction of underwater structures for preservation of submerged hazardous objects resulting from human activity, for example, due to accidents, floods. How is that around the shell, separating the object from the surrounding water environment. Prepare strengthening and preserving agents, shell, fill a consistent supply of first preserving, then a hardening substance. During the implementation of the method of controlling the ratio, the concentration and volume preserving and reinforcing substances on the basis of monitoring data about environmentally hazardous facility and regulate the process of conservation. 3 C.p. f-crystals, 5 Il.

The invention relates to a method of construction of underwater structures for preservation of submerged hazardous objects resulting from human activity, for example, due to accidents, floods.

There are various ways to create an underwater structures. They can be divided into two areas. The first includes the installation under water blocks or panels and then fill joints hardening, cementitious mortar. Examples of monstrously sequential immersion and European patent N 379383, publ. 25.07.90 on which underwater wall structure mounted phased.

The second direction involves the construction of an underwater shell and filling it with concrete. An example is the way the application Japan N 49-44364, publ. 28.11.74.

The necessity to solve the problem of preservation of submerged hazardous objects caused primarily by the presence on the seabed explosive remnants of war. Often these ammunition stuffed with poisonous substances, dangerous not only for the water environment, but also directly to the people.

Information about the methods of preservation of underwater submerged hazardous objects is practically unknown, is described in various magazines deals mainly limited to General recommendations. Proposed, for example, to put under water containment or to fill an object in any material.

In the operation of offshore oil fields applied method for the conservation of underwater hazardous object by protecting the water environment from spillage of oil well cementing. This method is chosen as the closest analogue (see Urartu surface means and deliver it to the depth, where it fills the joints of pipes, which prevents the breakthrough into the surrounding aquatic environment.

Proposed by the invention method is that the object around to create a membrane that separates the object from the surrounding water environment, prepare also preservative and shell fill a consistent supply of first preservative, then hardening substances. Ratio, concentration and volume preserving and reinforcing substances on the basis of monitoring data about environmentally hazardous object is selected in the preparatory process for the preservation and additionally regulate the process of conservation.

Furthermore, the shell creates by mounting the underwater casing, a preserving agent fills the cavity of the object, and the volume between the casing and the object is filled with hardening substance.

In the particular case of underwater formwork around environmentally hazardous object is performed with two cavities, the first of which is adjacent to the object. The first cavity is filled preservative, and the second is filled with hardening substance.

In addition, in the process of conservation is a mixture of the hardening mixture and preservatives.

The proposed method in the u, which separates them from the environment. The first shell is filled with a preserving substance that can state hazardous object, neutralizes harmful substances, emitted by the object, radiation and so on. Then the shell is filled with hardening substance that strengthens the burial, prevents its destruction, it is not possible to clean the preservative substance is water.

In preparation for conservation, and in the process monitor environmentally hazardous object, performing the measurement of different parameters in the aquatic environment. On the basis of monitoring data in preparation for preservation choose the ratio, the concentration and volume preserving and reinforcing substances. In the process of preservation is additionally regulate the above-mentioned ratio, the concentration and volume preserving and reinforcing substances in order to achieve the best results conservation and to minimize the intake of harmful substances or radiation in the aquatic environment.

The shell can be created by mounting the underwater casing, for example, lowering it from the surface vessel. Preservative substance fills the cavity of the object and a part of the casing. Osthaus preserving agent evenly, from all sides.

The casing may have two cavities, the first of which is adjacent to the object. The first cavity is filled with a preserving substance, the second reinforcing. In this case, the preservative will be surrounded by environmentally hazardous object more evenly.

If you use a mixture of preservatives, you will be able to more fully neutralize harmful substances environmentally hazardous object. A mixture of hardening substances will create a more durable, long-lasting shell.

The application of the method achieve new properties:

the application shell that is filled preservative, and then hardening substances helps to ensure minimal impact of harmful substances environmentally hazardous facility on the surrounding aquatic environment:

preservatives bind, neutralize harmful substances environmentally hazardous facility hardening makes the disposal of solid, prevent erosion and leaching of preservatives;

monitoring during the preparation of the conservation and proper in its process allows you to quickly adjust the ratio, the concentration and volume preserving and strengthening Vechi object and monitoring; in Fig. 2-4 shows the execution of the shell in the form of a casing; Fig. 5 shows the process of filling the formwork.

Preservation of the object 1 begins with a study of its status by monitoring and mark its position under water (Fig. 1). Then make a shell which is placed around the object 1, for example lowering the casing 2 on the depth using the round-trip device 3 from the vessel 4 and controlling its position using the beacon defendants 5 or underwater vehicles 6. The casing 2 may have one or two cavity (Fig. 2) and to be open (Fig. 3), closed (Fig. 4) or may consist of two cavities (Fig. 5). The position of the casing 2 in the space in the process of setting can be adjusted thruster devices 7.

The shell can also be generated in other ways, such as prefabricated units. Then inside the shell serves preservative. Feed preservatives, as well as hardening may be carried out in various ways, for example through the pipes 8, as shown in Fig. 1, 5.

Preservatives are selected depending on the type of environmentally hazardous object, for example on the basis of fast-curing epoxy resins, phenol resins, and rozliczanie substances can serve different grades of concrete, including cement, silicate, polymer (,).

In particular, if you apply combinations of preservatives in the form of composite materials with a predominance of fibrous or dispersed patterns and combinations of hardening in the form of various cement compositions.

First served preservative or mixture of preservatives), which fills the voids of the object and a part of the casing 2. If necessary to evenly surround the object preservative substance use formwork 2 of the two cavities.

Then served hardening substance (or mixture of substances), which fills the remaining volume, or the second cavity. Submission of preserving and strengthening material may be carried out on various pipes 8.

When filling in the shell are monitoring using sensors 9, which is mounted on the waters, and can also be installed on the casing. The sensors transmit information on a vessel engaged in the conservation of the cables 10, or a non-contact manner using the device-relay 11 information from sensors 9 and the device-information receiver 12 on the vessel 4.

If necessary, adjust the ratio, the concentration and the volume drop all underwater operations control surface means, pipelines using beacons 5, or underwater observation with an underwater vehicle 6.

1. Method for the conservation of underwater environmentally hazardous facility, including the preparation of a hardening substance and feeds it to a depth, wherein the object around to create a membrane that separates the object from the surrounding water environment, prepare also preservative, shell, fill a consistent supply of first preservative, then hardening substances, and the ratio, the concentration and volume preserving and reinforcing substances on the basis of monitoring data about environmentally hazardous object is selected in the preparatory process for the preservation and additionally regulate the process of conservation.

2. The method according to p. 1, characterized in that the shell is generated by mounting the underwater casing, a preserving agent fills the cavity of the object and a part of the casing, the volume between the casing and the object is filled with hardening substance.

3. The method according to PP.1 and 2, characterized in that the underwater casing around environmentally hazardous object is performed with two cavities, the first of which is adjacent to the object, the first cavity is filled with a preserving substance, and the second upesi preservative mixture and hardening substances.

 

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