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Rock alteration zoning comprehensive quantitative discrimination method

A discrimination method and alteration technology, applied in the analysis of materials, measuring devices, and analysis of solids using sound waves/ultrasonic waves/infrasonic waves, etc., can solve problems such as single evaluation methods, large influence of human factors, and inability to quantitatively evaluate, etc., to achieve advanced testing methods , the effect of accurate judgment results

Active Publication Date: 2017-02-01
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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Problems solved by technology

[0004] The purpose of the present invention is to provide a comprehensive quantitative discrimination method for rock mass alteration and zoning, which can solve the problems of single evaluation methods in the prior art, large influence of human factors, and incapable of quantitative evaluation

Method used

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  • Rock alteration zoning comprehensive quantitative discrimination method
  • Rock alteration zoning comprehensive quantitative discrimination method
  • Rock alteration zoning comprehensive quantitative discrimination method

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Embodiment Construction

[0035] Such as figure 1 Shown, the present invention comprises the following steps:

[0036] Step 1: Test scope division and test point determination:

[0037] According to the previous survey data and on-site geological conditions, the test range of altered rocks is divided, and the locations of in-situ test points for rock masses with different degrees of alteration are determined. The distance between test points is determined according to the accuracy requirements of engineering zoning. The smaller the distance, the more accurate the results of alteration zoning; mark the position at the test point for rebound test and acoustic wave test, and take rock samples at the test point for Point load strength test and direct shear test.

[0038] The division of the test range also considers factors such as the occurrence of the rock mass and the integrity of the rock mass, selects a typical section, and then arranges the location of the test points on the section.

[0039] Ste...

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Abstract

The invention discloses a rock alteration zoning comprehensive quantitative discrimination method and belongs to the field of geological engineering. The method is based on four in-situ test technologies such as a point load strength test technology, a rebound test technology, a sound wave test technology and a straight shearing test technology and comprises that through analysis according to results of tests on altered rock and unaltered raw rock, a rock point load strength index reduced rate, an average rebound value reduced rate, a sound wave velocity reduced rate, a cohesive force reduced rate and an inner frictional angle reduced rate are obtained, through a weight analysis method, a rock alteration degree quantitative evaluation index is built, a rock alteration zoning discrimination criterion is determined, and the rock is subjected to scientific alteration zoning so that space distributive scopes of a strong alteration zone, a medium alteration zone, a weak alteration zone and a non-alteration zone of rock are obtained. The method provides scientific basis for engineering exploration, design and treatment. The method creatively introduces the in-situ test technologies in rock alteration zoning discrimination and solves the problem that the prior art has a single technical evaluation method and a large artificial factor and cannot realize quantitative evaluation. The method provided by the invention utilizes an advanced test method and a novel discrimination process Compared with the traditional quantification experience method, the method provided by the invention has scientificity and reasonability.

Description

technical field [0001] The invention relates to the technical field of geological engineering, in particular to a comprehensive quantitative discrimination method for rock mass alteration zoning. Background technique [0002] There are a large number of hydrothermal fluids in the crust. When these fluids enter other rock systems along fractures and other channels, they chemically react with them, changing the chemical composition, mineral composition and structure of the surrounding rocks. The formed rocks called altered rocks. Altered rock is one of the common special rocks in water conservancy, mining, transportation, national defense and other industries. For example, there are problems of altered rock in the construction of major projects such as Ertan Hydropower Station, Xiaowan Hydropower Station, and Yunnan-Tibet Railway. Due to the difference in formation environment conditions, the degree of rock mass alteration in different regions is different, and there is a s...

Claims

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Application Information

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IPC IPC(8): G01N33/24G01N3/00G01N3/24G01N3/52G01N29/07
CPCG01N3/00G01N3/24G01N3/52G01N29/07G01N33/24G01N2203/0025G01N2203/0083G01N2291/0232
Inventor 于怀昌刘汉东黄志全戴福初董金玉吴琦崔江利王安明袁广祥任明浩史广诚
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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