Loess collapsibility coefficient calculation method

A technology of coefficient calculation and loess, applied in calculation, electrical digital data processing, special data processing applications, etc., can solve unrealistic and economical problems

Inactive Publication Date: 2017-03-08
NORTHWEST UNIV(CN)
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Problems solved by technology

However, for many regional disaster prevention plans, disaster evaluations, compilation of engineering geological atlases, and regional collapsibility analysis, it is neither realistic nor economical to conduct a large number of indoor collapsibility tests. Analyze on the basis of data, establish a fast and trending mathematical model, and make a judgment on whether the loess is subsidence close to the actual situation, so as to facilitate actual production and use

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  • Loess collapsibility coefficient calculation method
  • Loess collapsibility coefficient calculation method
  • Loess collapsibility coefficient calculation method

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Embodiment Construction

[0092] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0093] Reference figure 1 , The embodiment of the present invention provides a method for calculating the collapsibility coefficient of loess, which includes:

[0094] Step 100: Collect multiple loess samples, and measure multiple independent variable physical parameters and multiple dependent variable physical parameters of each loess sample in a laboratory environment; in this embodiment, the loess samples are collected from the same Re...

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Abstract

The invention discloses a loess collapsibility coefficient calculation method, and relates to the technical field of loess geological disaster evaluation. A corresponding model is built in combination with a loess collapsibility test according to geotechnical test data of collapsible loess in a loess area; important influence factors such as water content, an initial void ratio, a compression coefficient and the like are selected; and a relational matrix between evaluation indexes and a collapsibility coefficient is established based on a partial least square method. A set of loess collapsibility judgment method established by using a mathematic statistics method is formed; whether the loess is collapsible or not can be quickly judged by using a single physical mechanical index; and the method is simple, quick and practical, and can be applied to the aspects of regional disaster prevention planning of loess plateau, disaster evaluation and prevention, urban engineering geological atlas compilation, loess area collapsibility analysis and the like.

Description

Technical field [0001] The invention relates to the technical field of loess quality disaster evaluation, in particular to a method for calculating loess collapsibility coefficient. Background technique [0002] Loess is a Quaternary sediment rich in pores and weakly cemented. Its color is gray-yellow, brown-yellow or even brown-red. Its grain composition is mainly silty particles, with uniform texture, no bedding, and vertical joints. Under a certain pressure, it is soaked by water, its structure is rapidly destroyed and a significant additional subsidence occurs, which is called collapsibility of loess. Due to the particularity (macroporosity, water sensitivity, structure) and complexity of loess itself, collapsibility is not caused by a single factor, but multiple factors (material composition, microstructure, water content and Compressive stress). So far, the causes, characteristics and prevention measures of loess collapse have not been satisfactorily resolved. [0003] At ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 谢婉丽罗希王蕾刘晨光魏保民
Owner NORTHWEST UNIV(CN)
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