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Method for measuring weathering depth of rock

A determination method and rock technique, applied in the field of microscopic weathering depth determination

Active Publication Date: 2013-01-09
北京矿产地质研究院有限责任公司 +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

So far, there is no satisfactory quantitative method for determining the depth of rock weathering

Method used

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  • Method for measuring weathering depth of rock
  • Method for measuring weathering depth of rock
  • Method for measuring weathering depth of rock

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Embodiment Construction

[0040] The specific implementation will be described in detail below in conjunction with the accompanying drawings.

[0041] The type of rock to which the determination method of the present invention is applicable is a rock (such as granite) with compact internal structure, low porosity and strong corrosion resistance, and other types of rock can be used for reference. Rock weathering includes physical weathering, chemical weathering, and biological weathering, and weathering requires channels and spaces for action. For rocks with compact internal structure and low porosity (such as granite), the front of rock damage caused by weathering is limited to the range of micro-cracks, and the weathering damage outside the range of micro-cracks can be ignored. The extension depth of the micro-crack zone is the weathering depth of the rock. For rocks with high internal porosity (such as clastic rocks), their own voids can be used as channels for rock weathering, and the front edge of...

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Abstract

The invention provides a method for measuring the weathering depth of a rock. A microcrack and / or a microcrack zone produced on the inner side of a breakage surface after a rock is broken extend towards the inside of the rock by a perpendicular distance, and the perpendicular distance is the weathering depth. The method comprises the following steps of: collecting a rock sample according to a selected rock and / or a selected ore; cutting the prepared sample to be detected through a vertical section or a subvertical section; and quantitatively measuring the weathering depth of the rock by using a microscopic observation technology, a camera shooting technology and an image processing technology. The weathering depth is well defined by using microcrack zones which are distributed on the breakage surface of the rock and are found out for the first time, the weathering depth of the rock is quantitatively measured, the measuring method is easy to master, and a measuring result is accurate.

Description

technical field [0001] The invention relates to a method for measuring the weathering depth of rocks, in particular to a method for measuring the micro-weathering depth starting from the fracture surface of rocks at the initial stage of rock weathering. Background technique [0002] Rock weathering depth is the irreversible damage depth formed by the extension of external force from the surface of the rock to the interior of the rock. The greater the rock weathering depth, the higher the degree of damage suffered, and the more intense the degree of landform evolution; the process of increasing rock weathering depth is the process of rock breaking and soil formation. The greater the rock weathering depth, the rock The more thorough the soil-forming process; the broken rock surface and soil provide plants with a place to live and a source of nutrition. The deeper the rock is weathered, the more prosperous the growth of local plants, and the flourishing of plants provides food ...

Claims

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Application Information

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IPC IPC(8): G01N17/00G01B11/22
Inventor 王旭昭王兆印施文婧
Owner 北京矿产地质研究院有限责任公司
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