Novel automatic soil sample compaction apparatus and method for root-soil composite

Abstract

The invention discloses a novel automatic soil sample compaction apparatus for root-soil composite. The novel automatic soil sample compaction apparatus comprises a compaction cylinder, a hammering device, a driving device, a photoelectric induction switch and a control device, wherein a reflecting material is arranged on the inner wall of the compaction cylinder; the hammering device is arrangedin the compaction cylinder and comprises a compaction rod and a compaction hammer; the compaction hammer is arranged on the outer side of the compaction rod in a sleeving manner; the driving device isconnected with the hammering device and is used for driving the hammering device to make a hammering movement; the photoelectric induction switch is arranged on the side wall of the compaction rod and corresponds to the reflecting material; the control device is connected with the driving device and the photoelectric induction switch; and when the photoelectric induction switch induces a signal,the signal is transmitted to the control device, and the control device transmits a command to the driving device to correspondingly execute the action. According to the compaction apparatus disclosedby the invention, automated control of the compaction process can be realized, and the working efficiency is improved; and moreover, with the adoption of automatic insertion, the research result of shear strength of the root-soil composite is accurate.

Description

Technical field [0001] The invention relates to a new type of automatic soil sample compaction instrument, in particular to a new type of automatic soil sample compaction instrument and method used for root-soil composite bodies. The device and method can be used to determine the shear strength of root-soil composite bodies. the study. The invention belongs to the field of civil engineering experiment technology. Background technique [0002] In the specific construction process, it is often necessary to sample the soil to determine the unearthed water content, dry and wet density and other parameters, so as to further understand the compaction performance of the soil. But the soil is not just a single soil, it is often mixed with a large number of plant roots, and the existence of these roots has a great influence on the shear strength of the soil. The study of its shear strength can be a further step. Understanding the mechanism of root system soil consolidation and the preve...

AI Technical Summary

Problems solved by technology

[0003] The current soil sample compaction instruments are mostly used for the study of plain soil, and the traditional soil sample compaction instruments need to use a ring knife to cut the soil after compaction, which will cause certain damage to the soil, especially For the soil of the root-soil complex, it is also necessary to insert the roots of the soil, and cutting the soil will undoubtedly have a great impact on the roots

In addition, it is necessary to artificially control the number of soil beatings in real time for subsequent rooting, and the control of the number of times often requires multiple sets of experiments to determine, which is time-consuming and laborious, and artificial control has great randomness and large errors.

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