Jet probe device for in-situ evaluation of scouring characteristics of sandy soil

Abstract

The invention discloses a jet probe device for in-situ evaluation of scouring characteristics of sandy soil. A hollow stainless steel guide rod (1) is arranged at the upper part of the device; a jet probe (2) is arranged at the lower part of the device; a conical head (3) is arranged at the bottom of the jet probe (2); a jet hole (4) is formed at the bottom end of the conical head (3); a threaded connector is arranged at the top of the jet probe (2) and is connected with the lower part of the hollow stainless steel guide rod (1); scale identification lines (6) are arranged in the length directions of the whole hollow stainless steel guide rod (1) and the jet probe (2); the top of the hollow stainless steel guide rod (1) is connected with a water suction pump (8) by a rubber water pipe (7); and the whole testing device is fixed by an aluminum alloy tripod (9). The testing device has the characteristics of in-situ, convenience, quickness, economy and the like, and provides a powerful evaluation means for the scouring and erosional characteristics of the sandy soil in the fields of water conservancy, rock-soil and ocean engineering.

Description

technical field [0001] The invention relates to a jet probe device and method capable of in-situ evaluation of soil erosion characteristics, belonging to an in-situ testing device capable of conveniently and quickly evaluating the erosion and erosion characteristics of sand in the fields of hydraulic engineering, geotechnical engineering and marine engineering. Background technique [0002] The evaluation of foundation scour characteristics is very important to the stability estimation of structure design and use process. In 2001, American scholar Briaud pointed out that 60% of bridge failures were caused by scouring and instability of bridge piers or abutments. For various types of foundation structures, it is very important to clarify the scour characteristics of the foundation, especially the sand foundation, and the maximum scour depth in the design stage; to assess the scour potential and determine the erosion rate in the use stage, it is necessary to maintain the stabi...

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Problems solved by technology

[0004] Technical problem: the technical problem to be solved by the present invention is to propose a method that can be used in the fields of hydraulic engineering, geotechnical engineering and marine engineering in view of the defects of sampling difficulty, indoor test time-consuming and high cost in the existing evaluation of sand erosion characteristics in China. A spray probe device for in-situ evaluation of sand scour characteristics

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