Test equipment for analyzing structure of loose accumulation body

Abstract

The invention discloses test equipment for analyzing the structure of a loose accumulation body. The lower part of a sampling tube top connector is connected to the top of a sampling tube, and a tubeseal and a rubber ring are used for sealing an orifice of the sampling tube after sampling; a bottom plate of a guide pulley is connected to the upper part of the sampling tube top connector; a sliding groove is formed in a connecting rod, a top plate of the guide pulley is connected to the bottom plate after a first rolling shaft passes through the sliding groove, and the first rolling shaft is sleeved with a first roller; connecting rod pulleys at both ends of the connecting rod are respectively erected on two opposite side edges of a rectangular frame, and an inner side plate, a second roller and an outer side plate of each connecting rod pulley are respectively located on the inner side, the upper side and the outer side of the side edge of the rectangular frame. The blank of analyzingthe fine accumulation structure of loose bodies in landslide physical model tests in undulating terrain areas is filled up, and possibility is provided for in-depth discussion of the accumulation mechanism of the loose bodies in the physical model tests of this type. Besides, the test equipment is simple in structure, convenient to assemble and disassemble and high in cost performance.

Description

technical field [0001] The invention relates to the technical field of experiments related to landslide geological disasters, in particular to a loose accumulation body structure analysis test equipment. Background technique [0002] Giant rock avalanche-debris flow is one of the landslide disasters. High and steep rock mass is induced by external factors such as earthquake, rainfall or artificial damage, and the rock mass is unstable and damaged, and it occurs during the downward high-speed movement under the action of gravity. Broken, forming a debris flow, and finally piled up at the foot of the mountain slope, it often poses a great threat to the safety of important downstream structures and personnel, causing catastrophic events. The accumulation process of high-speed debris flow has always been a research hotspot of scholars at home and abroad, and physical model tests are currently an important means to reveal the mechanism of debris accumulation. However, the impleme...

AI Technical Summary

Problems solved by technology

[0004] At present, in the indoor chute test, the analysis of the loose accumulation in the debris flow simulation is mainly to observe the surface of the accumulation with the naked eye, and to carry out rough sub-area and layered screening to obtain its particle size distribution, and it is impossible to directly observe the accumulation Internal real accumulation structure and vertical particle size distribution characteristics

Moreover, rough sub-area and layered screening cannot obtain the internal structural characteristics of the accumulation body, and cannot carry out fine sampling and particle size analysis of the debris at key positions, which is far from meeting the test requirements

In addition, when the accumulation area of ​​the indoor test object is a special terrain such as a river valley, the equal-length, flat-mouthed sampling pipe cannot be tightly fitted to the site, that is, when the flat-mouthed pipe end is placed on a slope, when the granular material around the sampling pipe is removed After that, the particles in the tube will flow out from the nozzle, which cannot meet the sampling needs of the test.

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