Construction method for rapidly obtaining undisturbed soil samples in batches

A technology of undisturbed soil samples and construction methods, applied in the direction of sampling devices, etc., can solve problems such as easy scattering, high moisture content, loss of structure, etc., and achieve the effect of ensuring operation and sampling with low cost

Pending Publication Date: 2022-07-12
POWERCHINA CHENGDU ENG
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, cohesionless soil such as pebble layer, gravel layer and sand layer, due to the lack of cohesiveness between particles, is easy to scatter when the moisture content is too high or too low, and loses the structure.
In foreign countries, methods such as freezing method, chemical grouting method, and steel sheet pile method are generally used to drill underwater original samples, but these methods are often costly and difficult to implement
In general, there is no economically feasible and easy-to-operate method for preparing the original sample of cohesive soil

Method used

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  • Construction method for rapidly obtaining undisturbed soil samples in batches

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specific Embodiment

[0032] The technical problem to be solved by this application is a device and method for quickly obtaining undisturbed soil samples in batches, which can be applied to cohesive and non-cohesive soils of different particle sizes. The main purpose of the technical solution of the present application is to quickly obtain undisturbed soil samples in batches. The device and method for quickly obtaining undisturbed soil samples in batches adopted by this application to solve its technical problems are briefly described as follows in the principle and process:

[0033] 1) Grooving

[0034] ①For fine-grained soils such as clay, sand, and gravel: use a scraper and a spoon to carve grooves with a width of 6cm-8cm and a depth of 10cm-30cm on a representative soil sample. For non-cohesive soil, water can be properly sprinkled before the groove is carved. , in order to keep the soil sample in its original state.

[0035] ②Coarse-grained soil containing pebbles: Shallow trenches with a wi...

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Abstract

The invention discloses a construction method, particularly discloses a construction method for rapidly obtaining undisturbed soil samples in batches, and belongs to the technical field of constructional engineering exploration sampling processes. The construction method for rapidly obtaining the undisturbed soil samples in batches is convenient to operate and relatively low in sampling cost. According to the construction method, original sample soil bodies needing to be sampled are divided into blocks and grids, then fixed coating layers are formed on the exposed faces of the original sample soil bodies subjected to block division and grid division, and finally the coated original sample soil bodies and the coating layers are cut and taken out on the whole, so that the work of rapidly obtaining the undisturbed soil samples in batches is completed.

Description

technical field [0001] The invention relates to a construction method, in particular to a construction method for quickly obtaining undisturbed soil samples in batches, and belongs to the technical field of construction engineering exploration and sampling technology. Background technique [0002] Geotechnical test is a direct and effective means to find out the physical and mechanical properties of soil layers, and provides important design and calculation parameters for engineering projects and reasonable utilization and engineering treatment of soil. The taking of soil samples and the preparation of samples are the first work of the geotechnical laboratory test, and also the primary work of the geotechnical laboratory test. The sample is the core of the geotechnical test, and the soil sample is the original body of the sample preparation. The representativeness of soil samples and specimens is the key to ensuring the real value of geotechnical tests. The soil samples us...

Claims

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Application Information

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IPC IPC(8): G01N1/08
CPCG01N1/08
Inventor 罗启迅丁庆李建国李建沈志文罗欣
Owner POWERCHINA CHENGDU ENG
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