Method for laying geotextile underwater

A technology of geotextiles and gravel bags, which is applied in infrastructure engineering, coastline protection, construction, etc., can solve problems such as uneven weight of stones, stone crushing of 1 volume of drainage board, etc., to reduce maintenance frequency, ensure construction quality, The effect of reducing maintenance costs

Active Publication Date: 2009-10-28
CHINA SHENHUA ENERGY CO LTD +2
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AI-Extracted Technical Summary

Problems solved by technology

However, due to the different sizes and weights of the stones, if sand and gravel are directly laid on the d...
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Abstract

The invention provides a method for laying geotextile underwater, which includes steps of: 1. berthing the laying ship along a dike axis; 2, fastening the geotextile to be layed with rope; 3. pulling the pulley set to coil the geotextile; 4. nailing two positioning steel pipes close to the ship edge; 5. putting the geotextile down close to the steel pipes; 6. laying the geotextile coil beneath water, pressing the geotextile edge with a stone bag, then moving the ship; 7. dropping a stone bag upon a determined distance of moving; 8. recycling geotextile tube in the water; 9. pressing the terminal edge of the geotextile with a stone bag, and laying the next block of geotextile. The method for laying geotextile underwater is capable of uniformly distributing gravity onto the draining board of the lower layer, and the phenomenon of draining board break due to partially bearing too much force. The method for layer geotextile underwater is further capable of effectively reducing maintenance frequency of the outer port channel, so as to reduce maintenance cost of the port.

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  • Method for laying geotextile underwater
  • Method for laying geotextile underwater

Examples

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Example Embodiment

[0024] The method for laying geotextiles underwater in the present invention preferably adopts the first self-propelled deck barge with a good anchoring system as the laying vessel. The laying vessel has two anchoring systems at the front and rear, and two sets of pulley blocks are equipped on one side of the vessel for lowering to be laid. Geotextile. In addition, a second self-propelled deck barge adjacent to the laying vessel is needed. The second self-propelled deck barge is used to load gravel bags and also serves as a diver's ship. The positioning directions of the two self-propelled deck barges are along the axis of the dike, the middle position of the two ships is the laying of the sideline, and the distance between the two ships is about 0.4m-0.8m, which is just enough to put the geotextile down. After the laying ship is in place, the divers go into the water, and the workers lay down the geotextile rolled up with steel pipes along the side of the ship. During the above process of laying geotextiles, the diver pulls on the edges of the geotextiles to flatten the geotextiles, and then evenly press the gravel bags on the geotextiles. The purpose is to prevent the geotextiles from being washed away by water and form a certain amount of running water segment.
[0025] Such as figure 2 As shown, the method for laying geotextiles underwater of the present invention includes the following steps:
[0026] Step 101: Lay the ship along the axis of the embankment (that is, the starting edge line of the geotextile laying on the side of the ship);
[0027] Step 102: Tie up the geotextile roll to be laid with a rope;
[0028] Step 103: Pull the pulley block to lift the geotextile roll;
[0029] Step 104: Lay two positioning steel pipes at a certain distance close to the ship, the distance is preferably 7 meters;
[0030] Step 105: The geotextile roll is slowly put down next to the steel pipe pulley block and enters the water;
[0031] Step 106: The diver puts the geotextile roll to the bottom of the water and presses the edge of the geotextile with a gravel bag, and then instructs the crew on the ship to move the ship to spread the geotextile;
[0032] Step 107: Throw a batch of gravel bags every time the ship moves 4 to 5 meters until the geotextile is finished;
[0033] Step 108: Take back the empty geotextile tube left in the water;
[0034] Step 109: The diver presses the end edge of the geotextile with a gravel bag, and repeats step 101 for subsequent laying.
[0035] By using the geotextile laying method of the present invention, work efficiency can be greatly improved. When laying, GPS is preferably used to determine the sideline and the axis overlap width to meet the design requirements.
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