Rock mass joint connectivity determination method based on drilling camera shooting technology and permeability test system

A technology for testing systems and determining methods, applied in the fields of permeability/surface area analysis, measuring devices, suspension and porous material analysis, etc. and other issues, to achieve the effect of comprehensive consideration of factors and objective and accurate calculation

Pending Publication Date: 2021-02-09
山西潞安环保能源开发股份有限公司常村煤矿
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Problems solved by technology

[0002] In the fields of water conservancy and hydropower engineering, mining engineering and petroleum engineering, etc., the evaluation problems of rock mass permeability characteristics and seepage stability are often faced. Seepage in rock mass joints will reduce the strength of rock mass and change the mechanical properties of jointed rock mass. Reduce the stability of engineered rock mass

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  • Rock mass joint connectivity determination method based on drilling camera shooting technology and permeability test system
  • Rock mass joint connectivity determination method based on drilling camera shooting technology and permeability test system

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Embodiment Construction

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] The embodiment of the present invention discloses a method for determining the connectivity of rock mass joints based on borehole camera technology and a permeability testing system, which includes the following steps:

[0020] S1. On the surface of the rock mass to be tested, drill two parallel adjacent horizontal boreholes;

[0021] S2. Observe the internal geological characteristics of the two boreholes through the borehole camera system to determine...

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Abstract

The invention provides a rock mass joint connectivity determination method based on a drilling camera technology and a permeability test system, and the method comprises the following steps: drillingtwo parallel and adjacent horizontal drill holes on the surface of a rock mass to be tested; observing joint fissure development conditions in the two drill holes through a three-dimensional digital photography system; selecting an unjointed and completely-developed area in the drill hole, and performing permeability test by using a permeability test method to obtain permeability k0; respectivelytesting the remaining n regions by using a permeability test method to obtain permeability k1-n, wherein the ratio of k1-n to k0 is a region penetration value, and the ratio of the area penetration value to the joint strip number is a joint penetration value. Joint connectivity of different areas in the rock mass can be calculated more objectively and accurately.

Description

technical field [0001] The invention belongs to the technical field of rock mass quality detection, and in particular relates to a method for determining the connectivity of rock mass joints based on drilling camera technology and a permeability testing system. Background technique [0002] In the fields of water conservancy and hydropower engineering, mining engineering and petroleum engineering, etc., the evaluation problems of rock mass permeability characteristics and seepage stability are often faced. Seepage in rock mass joints will reduce the strength of rock mass and change the mechanical properties of jointed rock mass. Reduce the stability of engineering rock mass. Therefore, the research on the permeability characteristics of joints has received high attention in the field of rock mechanics engineering. [0003] Due to the effect of in-situ stress, the stress environment of the actual engineering rock mass is often in a three-dimensional unequal pressure state. T...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/84G01N15/08
CPCG01N15/0826G01N21/84
Inventor 苗海周赵杰李彦军张红鸟王攀峰宋剑窦高伟鱼红柳孙燕妮闫超王红丽
Owner 山西潞安环保能源开发股份有限公司常村煤矿
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