Anti-seepage short wall simulation device for controlling breakwater foundation piping development and test method thereof

Abstract

The invention relates to an anti-seepage short wall simulation device for controlling breakwater foundation piping development and a test method thereof, and belongs to the field of breakwater foundation seepage control. The device comprises a sand tank box, an upstream water level control system, and a data acquisition system for monitoring a test process; a first percolation assembly for dividing the sand tank box into an upstream water inlet chamber and a sand sample filling chamber is arranged in the sand tank box; the top end of the sand tank box is sealed by a detachable cover plate; a piping hole penetrating through the cover plate is formed in the bottom surface, located in the sand sample filling chamber, of the cover plate; an anti-seepage short wall is arranged between the first percolation assembly and the piping hole; the anti-seepage short wall is designed to be provided with various penetration degrees and positions; and side plates and the cover plate of the sand tank box are made of colorless transparent materials. According to the anti-seepage short wall simulation device for controlling breakwater foundation piping development and the test method thereof, the formation and development process of breakwater foundation piping can be visually observed, different control piping development processes under the condition of the anti-seepage short walls with different penetration degrees and positions can be visually observed, and the situation is compared with a piping damage situation under the condition of no anti-seepage short walls.

Description

technical field

[0001] The present application relates to the field of dike foundation seepage control, in particular to a short seepage-proof short wall simulation device for controlling the development of dike foundation piping and a test method thereof. Background technique

[0002] Dike foundation piping means that under the action of the difference in water head inside and outside the embankment, seepage inside the embankment penetrates the downstream topsoil layer, and seepage outlets, namely piping outlets, appear. A sand ring is formed at the orifice, and a seepage channel is formed inside the embankment along the contact surface between the embankment sand layer and the bottom of the embankment or the topsoil covering layer of the embankment body. As the water head increases, the channel develops back upstream to form a tubular seepage channel , and transport sand from the channel to the downstream seepage outlet. When a certain water head is reached, the piping ch...

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