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Overground disoriented core orientation method

A non-directional, core-based technology, applied to measuring devices, instruments, surveying and navigation, etc., can solve the problems of not being able to determine whether the core is broken, interrupt the production process, and poor reliability, and achieve improved accuracy, low cost, and simple operation. Effect

Active Publication Date: 2013-02-20
高森
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Problems solved by technology

Its disadvantages are: it is impossible to determine whether the core is broken, and the reliability is poor; the production process needs to be interrupted, and special tools are needed, so the cost is high

Method used

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  • Overground disoriented core orientation method

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with drawings and embodiments.

[0022] refer to figure 1 , PP' is the vertical diameter passing through the center O, OP'AP and OP'BP are two vertical great circles, OAB is an oblique great circle.

[0023] OA and OB are the adjacent upper and lower measurement ranges (hole segments) of the borehole, θ 1 and θ 2 is the zenith angle, γ is the total bending angle, the angle between two sides of two upright great circles △α is the change value of azimuth angle, the angle between two sides of two upright great circles and an inclined great circle φ 1 and φ 2 It is the special value of the end angle of the upper and lower range.

[0024] The three sides of spherical triangle ABP are θ 1 , θ 2 and γ, the three angles are π-φ 1 , φ 2 and Δα. Given any 3 parameters, the other 3 can be obtained.

[0025] Non-directional core ground orientation method, including the following steps:

[0026] ① Sampli...

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Abstract

The invention discloses an overground disoriented core orientation method. The method comprises the following steps of: sampling; acquiring data on hole deviation of a core sample; calculating a full-bending angle gamma, a special endpoint angle value phi-theta1 and a special endpoint angle value theta2 according to sine and cosine formulas of a spherical trigonometry; and performing tests through a JJG-1 inclinometer calibration console, an inclinometer shell, and a clamp coaxial with a core, small-caliber inclinometer or a fixed inclinometer, thus implementing the orientation of the core. The overground disoriented core orientation method overcomes the defect of unreliability in judgment of root excision of the core by using the common method, has the advantages that operation is simple, single data analysis is accurate and cost is low, and has the potential of accuracy improvement along with improvements of the inclinometer.

Description

technical field [0001] The invention relates to a non-directional rock core ground orientation method used in geotechnical engineering, civil construction, mining, oil drilling, geological exploration, earthquake, water conservancy and hydropower, traffic tunnel and underground engineering. Background technique [0002] The existing traditional core orientation methods (refer to "Керно-Метрия", ЮшковА.С., с.33-102, Недра, 1989.) are all based on the core not separated from the rock mass, using the orientation tool in the hole Score or mark finish on end or side. Its disadvantages are: it is impossible to determine whether the rock core is broken, and the reliability is poor; the production process needs to be interrupted, and special tools are needed, so the cost is high. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the above-mentioned defects in the prior art and provide a non-directional core surface orien...

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Application Information

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IPC IPC(8): G01C1/00
Inventor 高森高潮
Owner 高森
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