Method and device for volume measuring of crack soil

Abstract

The invention discloses a method and a device for volume measuring of crack soil. The method includes steps: (1), taking a circular wire mesh, symmetrically binding four copper wires on the edge of the wire mesh, taking a voluminal beaker, pouring into liquid paraffin, and placing the beaker containing the liquid paraffin on a balance tray; (2), weighing testing soil sample mass by a balance; (3) adjusting a horizontal extension valve and a vertical extension valve to enable the wire mesh to be totally immersed in the liquid paraffin, reading the balance, and recording integral mass; and (4) adjusting the vertical extension valve to enable an auxiliary device to be lifted, placing a soil sample on the wire mesh, reading the balance, recording the integral mass of the beaker, the liquid paraffin, the copper wires and the soil sample. The beaker containing the liquid paraffin is placed on the balance tray, one end of each copper wire is bound on the edge of the wire mesh, the other end of each copper wire is bound on a horizontal supporting rod which is connected with a vertical supporting rod, and a support is connected below the vertical supporting rod. The method is easy, operations are simple and convenient, and volume measuring of crack soil sample is higher in accuracy.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering measurement, in particular to a measuring method for measuring the volume of cracked soil, and also relates to a measuring device for measuring the volume of cracked soil. Background technique [0002] The determination of soil sample density can understand the compactness of the soil structure, and it is also used to calculate the soil pressure of the retaining wall, the design and calculation of the stability of artificial and natural slopes, the calculation of the bearing capacity and settlement of the foundation, and the compaction during the construction of the roadbed and pavement. Indispensable indicator of degree of control. The core of the density test method is the volume measurement of the soil sample. [0003] The initial volume measurement method is to directly measure the size of the sample with a vernier caliper or a micrometer. Although this method is simple, due ...

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Problems solved by technology

[0004] Under the influence of natural depositional environment, climate and artificial action, soil is easy to form a soil structure with different degrees of pores, cracks, and wormholes. From the perspective of materials, soil is a porous medium, and the existing methods cannot analyze the soil structure. The real volume measurement of the soil will inevitably lead to the distortion of the physical and mechanical indicators of the soil

In view of the successful experience of using the Archimedes principle and the buoyancy method to measure the volume of objects, some researchers have tried to use different liquids to measure soil samples with micro-cracks, such as mercury, toluene, aromatic compound Kerdane, etc., but these liquid substances are all Has certain toxicity, and strict safety measures must be taken during the test

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