A method for predicting the erosion of sea caves by floating objects carried by waves

Abstract

The invention provides a method for predicting the erosion of sea caves by floating objects carried by waves: (1) determining the height, width and depth of sea caves; (2) determining the undrained resistance of rock and soil around sea caves shear strength; (3) determine the density, equivalent length, equivalent width and equivalent height of floating objects; (4) determine the action time T of strong waves 0 , cycle and velocity; (5) Calculate the equivalent radius of the sea cave; (6) Calculate the surface area and side area of ​​the sea cave, (7) Calculate the mass of the floating objects; (8) Calculate the impact of the floating objects on the surrounding area of ​​the sea cave (9) Calculate the impact stress of a minimum side and a middle side of the floating object on the circumference of the sea cave respectively (10) Calculate the total number of wave actions N; (11) Calculate the number of impacts of the floating object on the tunnel surface; (12) Calculate the impact times of the floating objects on the side wall of the sea cave; (13) Calculate the abrasion amount of the floating objects on the face of the tunnel and the abrasion amount on the side wall of the cave during the wave action time.

Description

technical field [0001] The invention relates to the field of geological hazards in coastal zones, in particular to a method for predicting the amount of erosion of sea erosion caves by floating objects carried by waves. Background technique [0002] Sea caves are a common landform phenomenon developed on sea cliffs, and generally develop in weak parts of sea cliffs, including weak interlayers, weak dikes and weak weathered zones. Under normal sea conditions, the size of sea caves will not change, but under extreme sea conditions, such as strong waves caused by strong typhoons or storm surges, the circumference of sea caves will be continuously eroded, and the scale of sea caves will become larger and larger. In my country, some garbage, such as wood, foam, and bottles, is usually accumulated in the coastal zone. These garbage float on the water surface under extreme sea conditions. With the reciprocating motion of the waves, they continuously hit and rub against sea caves, c...

AI Technical Summary

Problems solved by technology

In my country, some garbage, such as wood, foam, and bottles, is usually accumulated in the coastal zone. These garbage float on the water surface under extreme sea conditions. With the reciprocating motion of the waves, they continuously hit and rub against sea caves, causing strong abrasion to sea caves. This kind of abrasion has an important impact on the development of sea caves, but at present, there is no theoretical method for predicting and analyzing the amount of erosion of such floating objects on sea caves. In view of this, the present invention proposes a method for The method of predicting the amount of erosion of sea caves by floating objects carried by waves has the advantages of convenient use and strong operability

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