Construction method for laying permeable inverse-seepage preventing layer on bottom of river and lake
A construction method and anti-reverse seepage technology, which is applied in river regulation, artificial islands, water conservancy projects, etc., to achieve good air permeability, low engineering quantity and low engineering cost
Inactive Publication Date: 2011-05-11
张佛西
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Problems solved by technology
Laying the film requires a large amount of engineering and costs a lot, and the film has poor air permeability, which will make the water in rivers and lakes become a pool of stagnant water, causing ecological damage
Method used
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Embodiment Construction
[0015] The present invention will be further described below in conjunction with the accompanying drawings and a specific embodiment.
[0016] a. Put several square caissons next to each other to the bottom of rivers and lakes. The structure of the caissons is the same as the existing caissons used for underwater pouring cement piles, and the setting of the caissons is also the same as that of the existing caissons for underwater pouring The setting method is the same, the height of the caisson is required to be at least slightly greater than the depth of the river and lake. After the caisson is properly arranged, the water in each caisson is pumped out and the pulpy silt in it is basically removed. It is required to ensure that there is basically no water in the caisson;
[0017] b. Take solid materials magnesia, perlite, sawdust and magnesium chloride solution and fully mix in proportion to form a mixed filler. The weight percentage of each solid material used is: magnesia 4...
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An construction method of air permeable impervious liner on the bottom of rivers or lakes is provided, which comprises the steps as follows: arranging a plurality of square caissons in an edge-to-edge mode on the bottom of a river or lake before pumping water out of each caisson; taking solid materials of magnesia, perlite, wood chips and rough niter solution to mix sufficiently in a proportion to form a mixed filler; adding the mixed filler into each caisson to agitate, and then, adjusting pH of the mixture of the mixed filler with some sludge between 7 and 8; maintaining a natural solidification for the mixture of the mixed filler with some sludge in each caisson for 30 to 48 hours, until complete solidification is fulfilled; removing the caisson. The invention provides blocks to cover the bottom of a river or a lake with the construction method, so that the bottom of the river or lake has rather good air permeability; meanwhile, sludge on the bottom of the river or lake will not upwell, the river and lake water can be kept rather clear. During the execution of the construction method of the invention, without pumping all water out of a river or lake, the quantity of construction works and construction cost are relatively low.
Description
technical field [0001] The invention relates to a construction method for laying an anti-reverse seepage layer at the bottom of rivers and lakes, in particular to a construction method for laying a breathable anti-reverse seepage layer at the bottom of rivers and lakes. Background technique [0002] For preventing the silt at the bottom of rivers and lakes from surging upwards, at present, there is a method to lay film at the bottom of rivers and lakes. Laying the film requires a large amount of engineering and costs a lot, and the film has poor air permeability, which will make the water in rivers and lakes become a pool of stagnant water, causing ecological damage. Contents of the invention [0003] The object of the present invention is to provide a construction method for laying a breathable anti-reverse seepage layer at the bottom of rivers and lakes. After laying the anti-reverse seepage layer at the bottom of rivers and lakes by this construction method, the ecol...
Claims
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IPC IPC(8): E02B3/02E02B3/16E02D29/00E02D23/00
CPCY02A10/00
Inventor 张佛西
Owner 张佛西