CN200989769Y - Large scale roughness measuring table - Google Patents

Abstract

The utility model relates to a large scale roughness measurement table, and scales are marked on a transparent roughness ruler. The valid length of the scales is 1000 cm and the valid width of the scales is 100cm, the valid width is divided into 100 sections, each section represents 10mm, the left side of the scales is marked with corresponding bulge teeth scope R<y>; the valid length of the scales is divided into 10 sections and marked with the rock structure surface figure curve length L<n>; The valid width scale ''0'' benchmark has at least two peak tangencies with the figure curve. According to the rock structure surface figure curve length L<n>, the R<Yn> pointed by the scale when in the lowest valley tangency is the measured length L<n> of the figure curve bulge teeth scope R<Yn>, the rock structure surface roughness coefficient L<n> is generated by correcting straight side mathematic formula. The utility model is simple, easy for operation and convenient for transportation.

Description

Large-scale roughness degree test desk

(1) technical field

The utility model relates to large-scale roughness degree test desk, is applicable to being painted with on the paper of rock mass discontinuity surface outline curves that sample length is 200cm to 1000cm to measure roughness coefficient JRC _nThe occasion of value.

(2) background technology

Before the utility model was made, the prior art sample length was to measure roughness coefficient JRC on the paper of rock mass discontinuity surface outline curves of 200cm to 1000cm _nThe calculating of value or estimation technology rest on theory stage, and its principle is to revise straight flange method mathematical formulae computing method or revise straight flange method diagram estimation method: revising straight flange method mathematical formulae computing method is according to the specific assignment sampling length L _nThe rock mass discontinuity surface outline curves on the double wedge amplitude R that measures _Yn, utilize formula $\mathrm{JRC}=49.211{4e}^{\frac{29{\mathrm{<figure-callout\; id="0"\; label="L"\; filenames="Y20062010103100061.png"\; state="\{\{state\}\}">L</figure-callout>}}_0}{450L_n}}\arctan \left(\frac{8R_{\mathrm{Yn}}}{L_n}\right)$ Calculate the roughness coefficient value JRC of rock mass discontinuity _nRevising straight flange method diagram estimation method is according to the specific assignment sampling length L _nThe rock mass discontinuity surface outline curves on the double wedge amplitude R that measures _Yn, at L (horizontal ordinate)-R _YFind out L on (ordinate) graph of a relation _nWith R _YnIntersection point, and determine JRC by this intersection point _nValue.Owing to still do not have at present and on large scale (200cm to 1000cm) rock mass discontinuity surface outline curves, measure double wedge amplitude R _YnMethod, can't realize large scale (200cm to 1000cm) rock structural plane roughness coefficient JRC _nMeasurement.

(3) summary of the invention

The purpose of this utility model is to solve to measure large scale (200cm to 1000cm) rock structural plane roughness coefficient JRC _nProblem, provide a kind of simple in structure, easy to operate, the ruler of roughness of energy measurement large scale (200cm to 1000cm) rock mass discontinuity.

For this reason, the utility model is by the following technical solutions:

A kind of large-scale roughness degree test desk, the described large-scale roughness degree test desk that is transparence is marked with scale, and the effective length of described scale is 1000cm, and the effective width of described scale is 100cm; The width of described effective scale is divided into 100 lattice, and every lattice are represented 10mm, and every the scale mark in described scale left side is indicated corresponding double wedge amplitude R _YValue; The length of described effective scale is divided into 10 lattice, be respectively the position of 0cm, 100cm, 200cm, 300cm, 400cm, 500cm, 600cm, 700cm, 800cm, 900cm and 1000cm at the scale upside apart from left side start line distance, indicate the length L of corresponding rock mass discontinuity surface outline curves _nValue.

Employing the utlity model has following advantage: the utility model has remedied prior art can't realize the deficiency that the large scale rock structural plane roughness coefficient is measured, simple in structure, use easy to operate, measuring speed is fast, not influenced by human factor and precision meets the demands, and measurement result has embodied the size effect influence of roughness coefficient, for the size effect rule of quantitative statistical analysis rock structural plane roughness coefficient provides effective means, have bigger implementary value and economic results in society.

(4) description of drawings

Fig. 1 is a large-scale roughness degree test desk structural representation.

(5) embodiment

As shown in Figure 1, embodiment of the present utility model and principle of work are: a kind of large-scale roughness degree test desk, the described large-scale roughness degree test desk that is transparence is marked with scale, and the effective length of described scale is 1000cm, and the effective width of described scale is 100cm; The width of described effective scale is divided into 100 lattice, and every lattice are represented 10mm, and every the scale mark in described scale left side is indicated corresponding double wedge amplitude R _YValue; The length of described effective scale is divided into 10 lattice, be respectively the position of 0cm, 100cm, 200cm, 300cm, 400cm, 500cm, 600cm, 700cm, 800cm, 900cm and 1000cm at the scale upside apart from left side start line distance, indicate the length L of corresponding rock mass discontinuity surface outline curves _nValue.When this large-scale roughness degree test desk is manipulated, similar with the ruler measuring method, large-scale roughness degree test desk is positioned on the measurement table top of hollow, the table top below is by lighting, the paper that is painted with the rock mass discontinuity surface outline curves is positioned on the large-scale roughness degree test desk, and make the contour curve left end place the start line of the effective scale of large-scale roughness degree test desk, make scale mark place parallel with the average line of structural plane surface outline curves, and guarantee to make " 0 " baseline of two or more summits and scale tangent, according to the length L of rock mass discontinuity surface outline curves _n, read and the tangent pairing R of scale mark at the bottom of the deep valley _YnValue, promptly recording length is L _nThe double wedge amplitude R of contour curve _YnValue is (if this two pairing R of scale mark can read in the boundary at the bottom of the deep valley between two scale marks _YnValue is tried to achieve the R that carves contour curve according to interpolation method then _YnValue).Sample length among Fig. 1 is the double wedge amplitude R of the rock mass structure surface outline curves of 900cm _YnValue is 30mm, corresponding roughness coefficient JRC ₉₀₀Value is 1.3129.

Claims (1)

1, a kind of large-scale roughness degree test desk, it is characterized in that: the described ruler of roughness that is transparence is marked with scale, the effective length of described scale is 1000cm, the effective width of described scale is 100cm, the width of described effective scale is divided into 100 lattice, every lattice are represented 10mm, and every the scale mark in described scale left side is indicated corresponding double wedge amplitude R _yValue; The length of described effective scale is divided into 10 lattice, be respectively the position of 0cm, 100cm, 200cm, 300cm, 400cm, 500cm, 600cm, 700cm, 800cm, 900cm and 1000cm at the scale upside apart from left side start line distance, indicate the length L of corresponding rock structural face surface outline curves _nValue.

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