CN103698273A - Evaluation method for magnitude of rock cleavage using microcrack - Google Patents

Evaluation method for magnitude of rock cleavage using microcrack Download PDF

Info

Publication number
CN103698273A
CN103698273A CN201310655161.XA CN201310655161A CN103698273A CN 103698273 A CN103698273 A CN 103698273A CN 201310655161 A CN201310655161 A CN 201310655161A CN 103698273 A CN103698273 A CN 103698273A
Authority
CN
China
Prior art keywords
micro
crack
density
face
length
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201310655161.XA
Other languages
Chinese (zh)
Inventor
朴德元
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Korea Institute of Geoscience and Mineral Resources KIGAM
Original Assignee
Korea Institute of Geoscience and Mineral Resources KIGAM
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Korea Institute of Geoscience and Mineral Resources KIGAM filed Critical Korea Institute of Geoscience and Mineral Resources KIGAM
Publication of CN103698273A publication Critical patent/CN103698273A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/24—Earth materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
    • G01N1/06—Devices for withdrawing samples in the solid state, e.g. by cutting providing a thin slice, e.g. microtome
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

A method for evaluating the strength of rock texture using a microcrack comprises the steps of: collecting a square rock sample from granite; preparing thin sections which are parallel with three sides of the rock sample; measuring a microcrack with intersectional textures on each thin section; and evaluating the strength of the rock texture through a parameter of the microcrack in the thin sections.

Description

Use the method for micro-crack assessment rock cleavage intensity
Technical field
The present invention relates to a kind of method of using micro-crack assessment rock texture intensity, relate in particular to a kind of method of using micro-crack assessment rock texture intensity, wherein, by being distributed in the parameter of the micro-crack in rock, can derive the intensity of rock in splitting stone pit, use and can determine exactly according to the quarrying direction of the different rock in stone mountain, thereby improve quarrying efficiency.
Background technology
In grouan stone pit, edge can be by the potential plane cutting rock of easily separated rock.This unique direction is called as " splitting rock ", the term that in fact this use while being cutting or processing rock.
Splitting is also referred to as " slot ", and it is Japanese vocabulary, means gap.In Japan, can be held scissile plane most and be called the first plane or slot, perpendicular to the first plane and the second the easiest cut plane, be called the second plane, perpendicular to the plane of the second plane, be called the 3rd plane.In English, corresponding to three planes of the first plane, the second plane and the 3rd plane, be called rupture surface, texture face and difficult right in the face, it needs mutually vertical.
Therefore, relatively easily cutting granite is common, with ascending order order, be the first splitting (fracture) > the second splitting (texture) > triplet splitting (difficult right in the face), these three quarrying planes are conventionally mutually vertical.
These three quarrying planes are conventionally mutually vertical, and have different directions according to stone pit.The direction of quarrying plane is as the principal element of the direction of quarrying in determining unit stone pit, and affects widely the quarrying efficiency of standard stone.Therefore,, in grouan stone pit, distinguish that the ability of vertical splitting is considered to be even more important.
Yet because the quarrying plane of rock is in fact according to stone pit and difference, the direction of the first plane can not generally be applied.In addition,, because the direction of the first plane is found practically in most of stone pits, there is the in fact low problem of quarrying efficiency.
Summary of the invention
The present invention has been considered to solve this problems of the prior art, and an aspect of of the present present invention is to provide a kind of method of using micro-crack assessment rock texture intensity, wherein, by being distributed in the parameter of the micro-crack in rock, can derive the intensity of rock in splitting stone pit.
According to an aspect of the present invention, a kind of method of micro-crack assessment rock cleavage intensity of using comprises: from grouan, collect square rock sample; Prepare three thin slices that splitting surface is parallel with rock sample; Measure the micro-crack in thin slice with two groups of orthogonal splittings; And by the relative cleavage strength of parameter evaluation of micro-crack in thin slice.
The square rock sample of collecting in collecting the step of rock sample can be collected as there is on its outer surface rupture surface, texture face and difficult right in the face, in preparing the step of thin slice, the thin slice that preparation is parallel with rupture surface, texture face and difficult right in the face.
In measuring the step of micro-crack, can there is at least quartz of the length of 1mm and the micro-crack of feldspar by radiation measurement.
In the step of the relative cleavage strength of assessment, the parameter of micro-crack can be the total length of micro-crack, and corresponding relative cleavage strength can reduce along with the increase of total length.
In the step of the relative cleavage strength of assessment, the parameter of micro-crack can be the density of micro-crack, and corresponding relative cleavage strength can reduce along with the increase of density.
Can calculate by equation 1 density of micro-crack:
ρ = 1 A · N · Σ i = 1 N C 2 i ,
Wherein, the density that ρ is micro-crack, the cross-sectional area that A is sample, the quantity that N is micro-crack, and half of the C length that is micro-crack.
In the step of the relative cleavage strength of assessment, the parameter of micro-crack can be the average length of micro-crack, and corresponding relative cleavage strength can reduce along with the increase of average length.
In the step of the relative cleavage strength of assessment, the frequency that the parameter of micro-crack is micro-crack, and corresponding relative cleavage strength can reduce along with the increase of frequency.
In the step of the relative cleavage strength of assessment, the parameter of micro-crack can be for selecting in the frequency from micro-crack, total length, density and average length at least one, and the frequency of micro-crack, total length, density and average length can have high correlation with relative cleavage strength with the order of frequency, total length, density and the average length of micro-crack.
According to the present invention, by being distributed in the parameter of the micro-crack in rock, can derive the intensity of rock in splitting stone pit, use and can determine exactly according to the quarrying direction of the different rock in stone mountain, thereby improve quarrying efficiency.
Accompanying drawing explanation
Above and other of the present invention aspect, feature and advantage will be by graphic the following examples are described in detail and become more obvious in conjunction with appended, graphic in:
Fig. 1 is used micro-crack to assess the process flow diagram of the method for rock cleavage intensity according to the present invention;
Fig. 2 is for showing the schematic diagram of the first plane, the second plane and the 3rd plane of rock;
Fig. 3 is for showing the schematic diagram of the correlativity between quarrying plane and micro-crack;
Fig. 4 (a) and Fig. 4 (b) are the amplification picture with the first plane, the second plane and the 3rd parallel plane thin slice, and the sketch of micro-crack;
Fig. 5 is the schematic diagram of distribution of total length of micro-crack of the orientation angle of display plane;
Fig. 6 is the schematic diagram of distribution of frequency of micro-crack of the orientation angle of display plane;
Fig. 7 is the schematic diagram of distribution of density of micro-crack of the orientation angle of display plane;
Fig. 8 is presented at the various physical quantitys of micro-crack and the schematic diagram of the correlativity between pulling strengrth in six direction; And
Fig. 9 is for showing the schematic diagram of the correlativity between pulling strengrth and density, average length, frequency and total length.
Embodiment
Now embodiments of the invention will be described in further detail.
In three splittings of rock, on surface level, the direction of potential vertical splitting, as the principal element of the quarrying direction in setup unit stone pit, and has the effect being even more important in grouan stone pit.Therefore, in the first plane of horizontal plane, comprise in second plane and the 3rd plane of vertical plane, carry out the micro-crack relative configurations analysis about two potential vertical splitting surfaces.By measuring and test the physical quantity of micro-crack and the distribution that intensity is identified splitting.By attempting splitting effective derivation of determining cause element really with the distribution character of the micro-crack quantizing intuitively.
Fig. 1 is used micro-crack to assess the process flow diagram of the method for rock cleavage intensity according to the present invention.
1. collect rock sample (S110)
Jurassic period grouan in from Republic of Korea's South Kyongsang occupies garden, mountain, prosperous prefecture (hereinafter referred to as occupying prosperous grouan) is collected sample.Occupying prosperous grouan is Jurassic period grouan, wherein mixes Precambrian porphyroblast gneiss and biological banded gneiss.Rock is greyish white and equigranular medium texture rock.Particle size quartzy and feldspar is 2mm to 6mm.At the depth of about 20m, obtain the rock sample of test.The pattern of essential mineral forms (vol%) and comprising: 31.3% quartz, 39.5% plagioclasite, 9.8% biology and white mica in a small amount.Rock belongs to biotite granite.As shown in Figure 2, can confirm, in grouan quarrying, the first plane (rupture surface) forms horizontal plane, and the second plane (texture face) has the direction of ENE, and the 3rd plane (difficult right in the face) is substantially perpendicular to rupture surface.
2. prepare thin slice (S120)
From the collected rock sample that occupy prosperous grouan parallel with rupture surface, texture face and difficult right in the face, prepare thin slice.
The thin slice of preparing has the size of 2cm * 3cm, and has the thickness (about 0.1mm) of the three to four-fold of general thin slice, so that measure its planar structure.Can check that various factors is as micro-crack and splitting surface, the splitting surface of black mica and the micro-crack of grain edges of quartzy micro-crack and fluid inclusion, feldspar.Element except the micro-crack of quartzy and feldspar lacks the direction of splitting, and therefore, the present invention emphasizes microstructure, especially micro-crack.
Measurement is in length L, interval S, frequency N and the orientation angle at the interval of 15 ° of the staggered quartz of five side lines of the upper transverse and longitudinal of amplification picture (x6.7) of thin slice and the micro-crack of feldspar.In view of measuring difficulty, the length of micro-crack is limited to be not less than 1mm, wherein clearly shows and distributes.
Check the intensity anisotropy relevant with occupying prosperous grouan.Compare with direct extension test, the Brazilian ruby extension test that can easily carry out is as strength test.NX center (diameter is 5.4cm) is perpendicular to rupture surface, texture face and difficult right in the face, and the perparation of specimen is so that the length of sample becomes 1:2 with the ratio of diameter.In six direction, on the sample in the direction parallel with crack, carry out Brazilian ruby extension test, and totally 10 samples are used for each splitting.
3. micro-crack is measured (S130)
Can in grouan, measure two groups of splittings (micro-crack), wherein these two groups of splittings are mutually vertical in the thin slice of preparing with quarrying plane parallel in three directions.As shown in the schematic diagram that Fig. 3 shows the correlativity between quarrying plane and micro-crack, can with the first parallel plane thin slice in measure the micro-crack of texture 1 and difficult right in the face 2, can with the second parallel plane thin slice in measure the micro-crack of fracture 1 and difficult right in the face 1, and can with the 3rd parallel plane thin slice in measure the micro-crack of texture 2 and fracture 2.
Micro-crack quartzy and feldspar forms whole, to measure length, interval, frequency and the density of micro-crack by method of radiating, and carries out the analysis relevant to the potential splitting that occupies prosperous granite.That is to say, in graphic middle advised relevant six direction, analyze the characteristic of micro-crack.In addition, check the pulling strengrth of various micro-cracks and the correlativity between parameter.Fig. 4 (a) and Fig. 4 (b) show the amplification picture with the first plane, the second plane and the 3rd parallel plane thin slice, and a part for micro-crack.
4. cleavage strength assessment (S140)
The length of 4-1. micro-crack
Measure the length of totally 397 micro-cracks.As shown in table 1, the length of 80 micro-cracks on measurement rupture surface is, the length of the length of 147 micro-cracks on texture face and 170 micro-cracks on difficult right in the face.The total length of micro-crack is distributed between 1mm and 8mm, and concentrates between 1mm and 3mm.Crackle in 1mm to 3mm scope and the ratio that occupies total crackle in prosperous grouan, by ascending order order, difficult right in the face (36.0%) > texture face (29.2%) > rupture surface (17.4%).The overall average length that occupies prosperous grouan is 2.29mm, and the average length of plane, by ascending order order, is difficult right in the face (2.31mm) the > rupture surface (2.17mm) of the 3rd plane (2.45mm) >.Compare with difficult right in the face and texture face, the average length of the micro-crack of measuring in rupture surface is short.
Table 1
Figure BSA0000098644880000051
The total length of 4-2. orientation angle
As shown in table 2, the total length of the micro-crack of measuring in three planes is 808.8mm, and, by ascending order order, be difficult right in the face (332.8mm) the > rupture surface (136.3mm) of texture face (339.7mm) >.Texture face has similar total length with difficult right in the face, and the rupture surface corresponding with horizontal plane has the shortest total length.
Table 2
Figure BSA0000098644880000052
Figure BSA0000098644880000061
Total length at each orientation angle θ place micro-crack of plane distributes as shown in Figure 5.With respect to the clockwise direction around thin slice center and the direction of counterclockwise classifying.It is different according to the total length of the orientation angle of three planes, distributing, and derives distribution character in the relevant six direction of advising in the schematic diagram of Fig. 3.In rupture surface, in the part of ± 80 ° to ± 90 ° (textures 1), show high length distribution, and weak deviation point is formed on the part of-30 °.Yet whole curve shows the symmetrical characteristic about Y-axis.The highest length distribution is presented at the part of ± 80 ° to ± 90 ° certainly (fractures 1) in texture face, and deviation point is formed on the part from+10 ° to+30 °.High length distribution is presented at the part of (fracture 1 and the interlaced plane of texture 2) ± 80 ° to ± 90 ° certainly (fractures 2) in difficult right in the face, and deviation point is formed on again in the part of 0 ° to ± 10 ° (texture 2), so that micro-crack has vertical substantially distribution.The rupture surface of three planes and the curve shape of difficult right in the face are symmetrical about Y-axis.Fig. 5 has shown according to the distribution of the total length of micro-crack in the orientation angle of three planes.
The interval of 4-3. micro-crack
Measure the interval of 489 micro-cracks.As shown in table 3, the quantity at the interval of plane is 104 rupture surface, 189 texture faces and 196 difficult right in the faces.Occupy in the scope that being distributed in of prosperous grouan be less than 7mm, and mainly concentrate in 1mm.The equispaced of crackle is about 1.07mm.
Table 3
Figure BSA0000098644880000062
Be less than the distribution ratio at interval of the crackle of 1mm, by ascending order order, difficult right in the face (44.3%) > texture face (42.5%) > rupture surface (13.3%).The equispaced of plane, by ascending order order, is the difficult right in the face (0.85mm) of rupture surface (1.85mm) > texture face (0.86mm) >.Here, texture face has similar equispaced with difficult right in the face, and difficult right in the face has the most intensive equispaced.This phenomenon is relevant with the frequency N that crackle occurs.
The quantity of 4-4. micro-crack
In occupying prosperous grouan, measure in each direction totally 397 micro-cracks.As shown in table 4,80 micro-cracks of measurement rupture surface, 147 micro-cracks of measurement texture face, and 170 micro-cracks measuring difficult right in the face.
Table 4
In the quantity of the crackle of each orientation angle punishment cloth of plane as shown in Figure 6, and identical with the length of the micro-crack of measuring.Schematic diagram with reference to figure 3 is described according to the distribution of the orientation angle of three planes.Best result cloth is presented at the part of oneself ± 80 ° to ± 90 ° (textures 1) in rupture surface.Weak deviation point is formed on the part from+15 ° to 20 °, and whole curve is symmetrical about Y-axis.Best result cloth is presented in texture face ± part of 80 °～90 ° (fractures 1), and the be formed on+part of 10 °～20 ° (difficult right in the faces 1) of deviation point.Conventionally, show symmetrical characteristic.The highest length distribution is presented in difficult right in the face (fracture 2 and the interlaced plane of texture 2) ± part of 80 °～90 ° (fractures 2), and deviation point is formed on+part of 10 °～20 ° (textures 2), so that two groups of micro-cracks show vertical substantially distribution.Fig. 6 has shown according to the distribution of the quantity of micro-crack in the orientation angle of three planes, the distribution of the suggestion total length that it shows corresponding to Fig. 5.
The density of 4-5. micro-crack and intensity
By method of radiating, measure according to the quantity N of 397 micro-cracks in orientation angle and length L (reference table 1 and table 4).Can with the transversal of sample, half length C of A, crackle and the quantity of micro-crack obtain the density p of micro-crack by equation 1.
Equation 1
ρ = 1 A · N · Σ i = 1 N C 2 i
The density p of the micro-crack obtaining is as shown in table 5.
Table 5
Figure BSA0000098644880000081
The density of micro-crack is observed the frequency of micro-crack and the function of length, and according to the density of the micro-crack of the distribution angle θ of plane as shown in Figure 7.High density distributes and is presented in rupture surface the part from 80 ° to ± 90 ° (textures 1), and deviation point is formed on the part from 0 ° to ± 10 ° (difficult right in the face 2), so that two groups of micro-cracks have vertical substantially distribution.This aspect and total length and frequency (with reference to figure 5 and Fig. 6) similar.High density distributes and is presented in texture face the part from ± 80 ° to ± 90 ° (fractures 1), and the be formed on+part of 10 °～30 ° of deviation point, with increase trend a little less than showing.High density distributes and is presented in difficult right in the face the part from ± 80 ° to ± 90 ° (fractures 2), and deviation point is formed on the part from 0 ° to ± 10 ° (texture 2), so that two groups of micro-cracks demonstrations vertical distribution substantially.This aspect is consistent with the distribution in rupture surface.Crack density, by ascending order order, is difficult right in the face (0.62) the > rupture surface (0.21) of texture face (0.64) >.
Table 6 shows according to frequency N, total length L t, average length L m, density p and the Brazilian ruby pulling strengrth of micro-crack in the six direction of advising in the schematic diagram of the micro-crack at Fig. 3.
Table 6
Figure BSA0000098644880000082
Here, An (coefficient of anisotropy) is maximum (Max)-minimum (Min)/average.
The mean value of splitting in the both direction of the plane about the various physical quantitys of micro-crack, by ascending order order, for (fracture 1+ fracture 2) > (texture 1+ texture 2) > (the difficult right in the face 2 of difficult right in the face 1+), as shown in table 7.Therefore,, according to the intensity of splitting, trend is clearly.
Table 7
Figure BSA0000098644880000091
In order to identify the mechanical anisotropy relevant with grouan, be relatively sensitive to the Brazilian ruby extension test of the distribution of crackle.In the six direction of advising at Fig. 3, apply Brazilian ruby drawing stress, then measured intensity.Pulling strengrth in six direction is at 83kg/cm 2to 99kg/cm 2(average: 91.6kg/cm 2) scope in, and the coefficient of anisotropy of intensity is (average: in scope 6.5%) 3.1% to 10.8% in the both direction of each plane.As shown in Figure 8, be that, in the various physical quantitys and the correlativity between pulling strengrth of the micro-crack in six direction, pulling strengrth has the relative high correlativity of density, frequency and total length with micro-crack.
Be in the pulling strengrth and the correlativity between density, average length, frequency and total length in six direction, best correlation equation is represented as negative exponential function, as shown in Figure 9, the distribution character in each direction of pulling strengrth is than average length (R 2=0.11) be more sensitive to frequency (R 2=0.73) and total length (R 2=0.70).Here, R is relative coefficient, R 2for relative coefficient (R) square.Work as R 2be 1 o'clock, mean that all samples observed value is on the tropic of estimating, and work as R 2be 0 o'clock, the tropic that means estimation is the relation between interpretation parameters not.
The direction of the splitting of the unit quarrying of Korea S is as the principal element of determining quarrying direction, and affects widely the quarrying speed of key rock.Therefore the ability of, identifying vertical splitting is confirmed to be in grouan quarrying and is even more important.Although form quarrying plane on the horizontal plane of the lithosome that existing quarrying develops in the status of not development, it should be prudent, and to determining that the direction of rupture surface or texture face is important.About forming determining of this vertical splitting of micro-crack and the direction of visual micro-crack according to the type of micro-crack, can be the geological Significance relevant with the stress characteristics of granite.In Fig. 4, in the quartz at side place, lower-left, the direction of micro-crack is for being parallel to substantially vertical texture face (texture 1), and Fig. 5 has shown at the height of the part of ± 80 °～90 ° and concentrates.Therefore, the stress of the arrangement of micro-crack reflection grouan, the strong index of the direction of especially definite vertical splitting 1.
About the analysis result of the distribution of direction, length, frequency and the density of micro-crack, use the correlativity of the intensity obtaining with the amplification picture that occupies rupture surface, texture face and parallel the prepared thin slice of difficult right in the face of prosperous Jurassic period grouan to be summarized as follows:
1. in the direction that is distributed in the first splitting and the second splitting of the micro-crack by radiation, show vertical in form.In addition, the density of micro-crack, frequency, total length and average length provide relative cleavage strength, by ascending order order, are first splitting > the second splitting > triplet splitting.
2. splitting occurrence degree can be reflected in the relation between the Brazilian ruby pulling strengrth of six direction and frequency, density and the total length of micro-crack relatively well according to the schematic diagram of splitting relatively, and compare with average length, the correlativity between frequency and total length demonstrates high.
3. at thin slice, amplify the direction that typical micro-crack quartzy on picture reflects texture 1 well.The distribution character that is distributed in the micro-crack in quartz allows the direction of potential quarrying plane to be appropriately determin.
Although provide some embodiment with explanation the present invention, it should be appreciated that, only by way of illustration, provide these embodiment, without departing from the spirit and scope of the present invention, can make various modifications, conversion and change.Scope of the present invention should only be confined to claims and equivalent thereof.

Claims (9)

1. a method of using micro-crack assessment rock cleavage intensity, is characterized in that, comprising:
From grouan, collect square rock sample;
Prepare three thin slices that splitting surface is parallel with rock sample;
Measure the micro-crack in thin slice with two groups of orthogonal splittings; And
By the relative cleavage strength of parameter evaluation of micro-crack in thin slice.
2. the method for claim 1, it is characterized in that, in collecting the step of rock sample collected square rock sample be collected as there is on its outer surface rupture surface, texture face and difficult right in the face, and in preparing the step of thin slice, the thin slice that preparation is parallel with rupture surface, texture face and difficult right in the face.
3. the method for claim 1, is characterized in that, in measuring the step of micro-crack, by radiation measurement, has at least quartz of the length of 1mm and the micro-crack of feldspar.
4. the method for claim 1, is characterized in that, in the step of the relative cleavage strength of assessment, and the total length that the parameter of micro-crack is micro-crack, and corresponding relative cleavage strength reduces along with the increase of total length.
5. the method for claim 1, is characterized in that, in the step of the relative cleavage strength of assessment, and the density that the parameter of micro-crack is micro-crack, and corresponding relative cleavage strength reduces along with the increase of density.
6. method as claimed in claim 5, is characterized in that, calculates the density of micro-crack by equation 1:
ρ = 1 A · N · Σ i = 1 N C 2 i ,
Wherein, the density that ρ is micro-crack, the cross-sectional area that A is sample, the quantity that N is micro-crack, and half of the C length that is micro-crack.
7. the method for claim 1, is characterized in that, in the step of the relative cleavage strength of assessment, and the average length that the parameter of micro-crack is micro-crack, and corresponding relative cleavage strength reduces along with the increase of average length.
8. the method for claim 1, is characterized in that, in the step of the relative cleavage strength of assessment, and the frequency that the parameter of micro-crack is micro-crack, and corresponding relative cleavage strength reduces along with the increase of frequency.
9. the method for claim 1, it is characterized in that, in the step of the relative cleavage strength of assessment, at least one for selecting in frequency, total length, density and the average length of micro-crack of the parameter of micro-crack, and the frequency of micro-crack, total length, density and average length have high correlation with the order of frequency, total length, density and the average length of micro-crack with relative cleavage strength.
CN201310655161.XA 2012-12-11 2013-12-09 Evaluation method for magnitude of rock cleavage using microcrack Pending CN103698273A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2012-0143721 2012-12-11
KR1020120143721A KR101285968B1 (en) 2012-12-11 2012-12-11 Evaluation method for magnitude of rock cleavage using microcrack

Publications (1)

Publication Number Publication Date
CN103698273A true CN103698273A (en) 2014-04-02

Family

ID=48997342

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310655161.XA Pending CN103698273A (en) 2012-12-11 2013-12-09 Evaluation method for magnitude of rock cleavage using microcrack

Country Status (2)

Country Link
KR (1) KR101285968B1 (en)
CN (1) CN103698273A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105673015A (en) * 2016-01-25 2016-06-15 三峡大学 Stratified rock mass quarrying method based on static splitting

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101450504B1 (en) 2014-04-25 2014-10-15 한국지질자원연구원 Evaluation method for three quarrying planes using mechanical properties of rock
KR101537955B1 (en) * 2014-12-30 2015-07-20 한국지질자원연구원 Evaluation method for rock cleavage using distribution characteristics of volumetric strain curve for granite
KR101569759B1 (en) * 2015-03-20 2015-11-17 한국지질자원연구원 Evaluation method for rock cleavage using distribution of microcrack lengths
KR101584031B1 (en) * 2015-05-27 2016-01-22 한국지질자원연구원 Evaluation method for rock cleavage using distribution of microcrack spacings
KR101569757B1 (en) * 2015-06-18 2015-11-17 한국지질자원연구원 Evaluation method for rock cleavage using distribution of microcrack lengths and spacings
KR101734788B1 (en) * 2016-12-16 2017-05-11 한국지질자원연구원 Evaluation method for rock cleavage using distribution of brazilian tensile strengths

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101122561A (en) * 2007-08-02 2008-02-13 上海交通大学 Back penetration measuring method for film base binding performance
KR20110138857A (en) * 2010-06-22 2011-12-28 한국지질자원연구원 Method for deriving the orientation of rock cleavage in granites
KR101113116B1 (en) * 2009-10-28 2012-02-16 한국지질자원연구원 Method for Deriving Microcrack Orientations in Crystalline Rock
CN102565072A (en) * 2011-12-30 2012-07-11 重庆大学 Stereoscopic vision on-line detection method for surface crack of stretched aluminum alloy plate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101122561A (en) * 2007-08-02 2008-02-13 上海交通大学 Back penetration measuring method for film base binding performance
KR101113116B1 (en) * 2009-10-28 2012-02-16 한국지질자원연구원 Method for Deriving Microcrack Orientations in Crystalline Rock
KR20110138857A (en) * 2010-06-22 2011-12-28 한국지질자원연구원 Method for deriving the orientation of rock cleavage in granites
CN102565072A (en) * 2011-12-30 2012-07-11 重庆大学 Stereoscopic vision on-line detection method for surface crack of stretched aluminum alloy plate

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
尤明庆: "平台巴西圆盘劈裂和岩石抗拉强度的试验研究", 《岩石力学与工程学报》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105673015A (en) * 2016-01-25 2016-06-15 三峡大学 Stratified rock mass quarrying method based on static splitting
CN105673015B (en) * 2016-01-25 2017-10-27 三峡大学 A kind of beded rock mass quarrying method based on static state splitting

Also Published As

Publication number Publication date
KR101285968B1 (en) 2013-07-12

Similar Documents

Publication Publication Date Title
CN103698273A (en) Evaluation method for magnitude of rock cleavage using microcrack
Morel et al. Anomalous roughening of wood fractured surfaces
Molina et al. The pore system of sedimentary rocks as a key factor in the durability of building materials
CN104596845A (en) Measuring method for real stress-strain curve of metal welding structure
KR101450504B1 (en) Evaluation method for three quarrying planes using mechanical properties of rock
CN103616299A (en) Test piece and method for testing fracture toughness of hybrid mode of double-material interface
Ruiz et al. Measurement of the basic friction angle of rock by three different tilt test methods
CN110243516B (en) Method for testing residual stress distribution in board in real time
Barros et al. Experimental characterization of physical and mechanical properties of schist from Portugal
Karaman et al. Effect of the specimen length on ultrasonic P-wave velocity in some volcanic rocks and limestones
Xiaohu et al. Quantification of geological strength index based on discontinuity volume density of rock masses
DK3201597T3 (en) METHOD OF CHARACTERIZING A REVENTION OF A MATERIAL FROM ITS BREAKFAST
Asiri et al. Leeb hardness test for UCS estimation of sandstone
Tziallas et al. Determination of rock strength and deformability of intact rocks
CN201034976Y (en) Step ladder kind flaw detection test block
Forbes et al. Investigation into the effect of length to diameter ratio on the point load strength index of Gosford sandstone
CN108593531B (en) Rapid quantitative evaluation method for rock weathering degree and application thereof
Kalinichenko et al. Reference specimens of nonmetallic materials for penetrant nondestructive testing.
Kalinichenko et al. Methods for the manufacture of nonmetallic reference specimens for liquid-penetrant inspection
Su et al. Experimental investigation on microstructure characteristics and deformation failure behaviors of sandstone after high temperature under Brazilian splitting
Jedidi Evaluation of the concrete quality using destructive and non–destructive tests
CN105737768A (en) Structural surface roughness coefficient evaluation method based on Cosine similarity measurement
RU2323428C1 (en) Method for determining the wood static hardness
KR101569757B1 (en) Evaluation method for rock cleavage using distribution of microcrack lengths and spacings
CN113466043A (en) Method for testing fracture toughness of ceramic rock plate

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20140402