Calculation method for natural bulk density of macrograin soil
A technology for soil bulk density and bulk density, which is applied in the field of measuring the natural bulk density of giant-grained soils, can solve the problems of single measurement results, large errors, and difficulty in satisfying the refined analysis of the stability of complex slopes. The effect of meeting engineering needs
Active Publication Date: 2022-07-26
CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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Problems solved by technology
[0005] The invention provides a method for measuring and calculating the natural bulk density of huge-grained soil, which solves the problems that the existing calculation results of the natural bulk density of soil are single, large errors, inaccurate, and difficult to meet the fine analysis of complex slope stability
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[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0023] The method for calculating the natural bulk density of macrograin soil of the present invention comprises the following steps:
[0024] S1. Determine the measurement range 1 in which the natural bulk density needs to be measured, and arrange n exploration points within the measurement range 1 and conduct exploration respectively, where n is a positive integer. Measured range 1 is the distribution range of giant-grained soil. The exploration method is carried out according to the existing methods according to the geological conditions, including flat holes, drilling holes, vertical shafts, exploration pits, and exploration trenches. For example, see figure 1 and figure 2 , a certain deposit is giant-grained soil. According to the surface geological survey data, it is considered that the thickness of the deposit is large, and exploration drilling ...
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Abstract
The invention discloses a method for calculating the natural bulk density of giant-grained soil, which relates to the field of geological exploration and solves the problems that the natural bulk density of soil has single and inaccurate calculation results and is difficult to meet the stability analysis and calculation of complex slopes. The technical scheme of the present invention is: a method for measuring and calculating the natural bulk density of giant-grained soils. First, a measurement and calculation range is determined, and exploration points are arranged within the measurement and calculation range and exploration is carried out respectively; secondly, the measurement and calculation range is divided into exploration points, and the division of each exploration point is determined. The proportion of giant particles, sample and test the bulk density; thirdly, calculate the soil bulk density of each exploration point partition, and then calculate the average soil bulk density of the measurement range; finally, according to the large particle content revealed by the exploration, combined with the exploration point partition and topography The measurement range is divided into bulk density zones, and the soil bulk density of each bulk density zone is calculated. The soil bulk density calculated by the invention is closer to the natural bulk density of the slope, and the soil bulk density of the bulk density partition is suitable for the stability analysis of the complex slope.
Description
technical field [0001] The invention relates to the field of geological exploration, in particular to a method for measuring the natural bulk density of giant-grained soil. Background technique [0002] The natural bulk density of soil is the weight per unit volume in its natural state. Natural bulk density is a very important physical parameter in soil slope stability analysis and calculation, and the value of natural bulk density is closely related to the calculation results of stability analysis. According to the classification of particle groups in "Standards for Engineering Classification of Soils" (GB / T50145-2007), giant particles refer to boulders (cobble) with a particle size of d>200mm, or pebbles (crushed stone) with a particle size of 60<d≤200mmd , and the soil is divided into fine-grained soil, coarse-grained soil and macro-grained soil according to the relative content of different grain groups. Macro-grain soil is further divided into macro-grain soil, ...
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IPC IPC(8): G06F17/10G01C11/00G01N1/08G01N33/24
CPCG06F17/10G01N33/24G01C11/00G01N1/08
Inventor 魏星灿肖华波马金根杨静熙廖明亮吴章雷张景顺刘思丁
Owner CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE