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A Rapid Estimation Method of Physical and Mechanical Parameters of Moraine Soil

A technology of mechanical parameters and moraine soil, applied in electrical digital data processing, instrumentation, geometric CAD, etc., can solve problems such as the lack of effective empirical data relationship and insufficient research on physical and mechanical parameters of moraine soil

Active Publication Date: 2021-09-10
INST OF EXPLORATION TECH OF CHINESE ACAD OF GEOLOGICAL SCI +1
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Problems solved by technology

[0007] The purpose of the present invention is to solve the above-mentioned defects in the prior art, provide a method for quickly estimating the physical and mechanical parameters of moraine soil and its application, and aim to solve the problem that the research on the physical and mechanical parameters of moraine soil in the marine glacier area is not sufficient, Effective empirical data relationship has not yet been formed, and each site needs to carry out special research independently, which can save the construction period of exploration and evaluation, reduce the types and procedures of parameter testing, and reduce economic costs

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  • A Rapid Estimation Method of Physical and Mechanical Parameters of Moraine Soil

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Embodiment

[0032] 1) A moraine soil accumulation body is located in Songzong Town, Bomi County, Nyingchi City, southeast Tibet, and the national highway G318 passes under the accumulation body. The slope width is 1650m, the slope length is 68m, the front slope height is 50m, the slope aspect is 190°, the slope is 47.2°, and the front elevation is 3108m~3158m. It is a steep slope micro landform. The material composition of the accumulation body is moraine soil, and ice boulders are distributed on the top, with a particle size of 1-30cm. The lithology of the parent rock is mainly gneiss of the Songzong Formation, and the hydraulic property is water softening. There is a ditch at the foot of the moraine ridge, and the water flow is turbulent, mainly supplied by meltwater from the glacier. The vegetation is mainly shrubs, with a coverage rate of over 70%. There is a small landslide at the foot of the slope, and obvious sliding can be seen. The main deformation sign is weathering and exfolia...

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Abstract

The invention provides a method for quickly estimating the physical and mechanical parameters of moraine soil. Through the data analysis of a large number of field tests and indoor tests in the early stage, the statistical relationship between water content, void ratio, clay content and other physical and mechanical parameters is summarized. First, a simple test of moisture content, natural density and clay content is carried out on a fresh section of the moraine soil accumulation body, and then the void ratio, compression index, shear strength, compressive strength, Permeability and expansibility and other relatively complex engineering mechanics indicators, so that the preliminary evaluation of site stability can be quickly carried out; and then according to the evaluation results, targeted selection of dangerous sites for detailed investigation. Compared with the previous technology, the present invention can save the construction period of exploration and evaluation, reduce the types and procedures of parameter testing, and reduce economic costs. Significant applicability advantages.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering, in particular to a method for quickly estimating physical and mechanical parameters of moraine soil. Background technique [0002] Affected by the warm and humid air currents of the Indian Ocean, the Palong Zangbo River Basin in Nyingchi City in southeast Tibet has developed a marine glacial area, and the active advance and retreat of glaciers has created a large number of large-scale thick moraines. [0003] As a discontinuous engineering medium of mixed accumulation, moraine is not only the geological carrier of most landslides in southeast Tibet, but also the main material source of the disaster chain of glacier debris flow and glacial lake outburst, which is prone to deformation and instability under hydrodynamic conditions Geological disasters such as landslides, mudslides, and ground subsidence are formed. In the context of accelerating the planning and construction of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/13G06F30/20G06F119/14
CPCG06F30/13G06F2119/06G06F30/20
Inventor 杨东旭游勇陈晓清刘建康王军朝杨栋赵万玉孙昊
Owner INST OF EXPLORATION TECH OF CHINESE ACAD OF GEOLOGICAL SCI
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