Structure of king crab type light dyke-dam and method

Abstract

The present invention is rainbow type light dam structure and its construction process, and relates to dam building technology. The dam casing is made with high strength material, supported with ribs in the easy-to-deform parts and filled with other material. In soft foundation, light cushion layer is set in some easy-to-subside part; and in girt foundation, continuous antiseepage plates are inserted. The whole dam is integrated for balanced load, strengthened integral stability and raised strength.

Description

technical field [0001] The invention relates to the construction technology of dikes (cofferdams, roadbeds, retaining walls). It is a new type of bionic structure and method for building embankments on weak foundations. The invention relates to a method for factory production of embankment components and rapid embankment construction. Background technique [0002] "Soldiers come to block, water comes to cover up" This is the theory of truth for thousands of years. This seemingly simple embankment structure is not without research. Since Dayu's flood control, according to available historical data, embankment technology has always been a major research topic that threatens people's peace of life and plagues social and economic development. With the development of environmental science, geological science, computer technology, two-phase flow and non-cow flow technology, people's research on dyke technology has developed by leaps and bounds. There are a large number of repor...

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Problems solved by technology

Therefore, there are the following problems in the design and embankment: (1) Weak foundation: the general treatment method is to avoid the weak foundation or excavate the weak soil layer, but for many projects with deep buried soft foundation, this method is not suitable actual

(2) Excessive weight of the embankment: For soft foundations, the heavier the gravity dam, the better. Under the action, the direction of the principal stress of the substratum changes continuously, leading to foundation damage; on the other hand, the overweight of the dam body will limit the height of the embankment crest in the design process, which will easily cause over-waves and over-wave water to wash the embankment. Afterwards, it was washed into a deep ditch, and the wave wall sank and toppled, forming a flood of sea water to wash away the earth embankment, causing the stone retaining wall to collapse layer by layer until the embankment was flattened.

(3) The dam materials are loose and poor in seepage resistance: the dams made of mud and stones are all loose materials for the Shili Long embankment. If the foundation is slightly changed, there will be gaps, and water will leak out.

Leakage of the embankment is a major hidden danger. The quality of the dry block stone anti-scour masonry is poor, and it is easy to loosen and deform, causing water to seep into the soil of the embankment

(4) Poor stability: uneven settlement, landslides, and displacements often occur during the construction period or after completion. In the event of an earthquake or typhoon, heavy losses will occur, dikes will be destroyed, and sea water will flow back

(5) Slow consolidation and long construction period: the permeability coefficient of soft clay is 10 6 -10 8 The earthwork of the embankment cannot be piled up, it cannot stand, and the construction time is long. Although measures such as plastic drainage boards, geotextiles and sand cushions are adopted, the loading rate must be strictly controlled according to the bearing capacity of the foundation

Once slippage occurs, it will take a year and a half to continue construction, and rapid construction cannot be mechanized

(6) Large volume: the materials used in embankments are generally a large amount of earth and stone. Since the earthwork of the embankment cannot be piled up, it cannot stand. The erosion of wind, waves and ice makes the amount of reactive power quite large and the cost is very high

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