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Field in-situ sampling method for granular mixtures

A kind of granular and field technology, applied in the direction of sampling devices, etc., can solve the problems of easily disturbed granular accumulation layer, inability to obtain in-situ samples, etc., and achieve the effect of good fluidity and strong adhesion

Inactive Publication Date: 2016-04-27
CHENGDU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0007] The purpose of the present invention is to provide an in-situ sampling method for granular bodies, which solves the problem that existing sampling methods easily disturb the accumulation layer of granular bodies, resulting in the inability to obtain ideal in-situ samples.

Method used

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Embodiment

[0018] Since different accumulation slopes are distributed from top to bottom in the provenance area of ​​the granular slope, the accumulation slopes in the middle and lower layers are mostly formed by the debris flow reconstruction accumulation area, which is greatly disturbed and cannot reflect the original accumulation form. The morphological characteristics and the relationship between particles, the sampling position is selected from the first accumulation area where the granular body peels off from the steep slope to the provenance. The in-situ sample here is formed by the first accumulation and can maintain the shape after accumulation. , and is rarely disturbed, so choosing the sampling position here can fully understand the microscopic characteristics of the granular body.

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Abstract

The invention discloses a field in-situ sampling method for granular mixtures. The field in-situ sampling method overcomes the problem of incapability of sampling an ideal in-situ sample due to proneness to disturbance of a granular mixture accumulative layer in the prior art. The field in-situ sampling method provided by the invention comprises the following steps: (1) digging out a slope surface with an angle of 35 to 45 DEG from the top of a granular mixture slope to the bottom of the slope and respectively digging out one surface at the top, medium and bottom of the slope for sampling; and (2) respectively pouring two places of each plane with paraffin liquid obtained after melting of paraffin and virgin rubber of cyanoethyl acrylate and taking out cemented bodies of granular mixtures after solidification of the paraffin liquid and the virgin rubber. According to the invention, sampling is carried out via two processes, so a granular mixture accumulative layer is not disturbed, optimal samples are obtained, and subsequent determination operation is facilitated.

Description

technical field [0001] The invention relates to a field in-situ sampling method for granular bodies. Background technique [0002] Particulate slopes are widely distributed in relatively arid alpine mountainous areas in western my country, such as Xinjiang and Tibet. The sliding amount is not large each time, but the activities are extremely frequent and there are no long-term effective control measures, especially the granular slopes developed on both sides of the road, which seriously affect the normal operation of the road at the foot of the slope. Granular slopes are different from collapses, landslides, and rolling rocks. From the perspective of geological origin, it is a geological phenomenon in weathering and gravity landforms, and is the direct product of weathering, collapse, and scattering. Cuttings, sand, gravel or rock fragments, etc., move down the slope in a discontinuous and scattered rolling and sliding motion under the action of gravity, and accumulate at t...

Claims

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Application Information

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IPC IPC(8): G01N1/04
CPCG01N1/04
Inventor 孙书勤傅荣华郭玉宝魏丽娜苟聪赵峥
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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