CN107402288A - A kind of coal Burst Tendency method of testing based on stratification effect - Google Patents
A kind of coal Burst Tendency method of testing based on stratification effect Download PDFInfo
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- CN107402288A CN107402288A CN201710709791.9A CN201710709791A CN107402288A CN 107402288 A CN107402288 A CN 107402288A CN 201710709791 A CN201710709791 A CN 201710709791A CN 107402288 A CN107402288 A CN 107402288A
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- 239000003245 coal Substances 0.000 title claims abstract description 202
- 238000013517 stratification Methods 0.000 title claims abstract description 91
- 238000010998 test method Methods 0.000 title claims abstract description 20
- 238000012360 testing method Methods 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 238000005498 polishing Methods 0.000 claims abstract description 9
- 239000013589 supplement Substances 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims abstract description 3
- 239000004575 stone Substances 0.000 claims description 8
- 239000011435 rock Substances 0.000 claims description 7
- 238000003556 assay Methods 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 238000012935 Averaging Methods 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 241001074085 Scophthalmus aquosus Species 0.000 claims 1
- 238000004880 explosion Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 238000011160 research Methods 0.000 description 4
- 238000007430 reference method Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 230000020509 sex determination Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000010415 tropism Effects 0.000 description 1
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
- G01N33/22—Fuels, explosives
- G01N33/222—Solid fuels, e.g. coal
-
- 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
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2866—Grinding or homogeneising
Abstract
A kind of Burst Tendency method of testing based on coal seam reason effect, is the supplement to Burst Tendency method of testing, suitable for the Burst Tendency method of testing of the coal containing stratification.It can be very good to solve original method of testing to cause experimental result the drawbacks of larger discrete to be present, and a kind of accurate measurement scene coal seam different zones, the method for coal Burst Tendency under different stratification angles can be provided.The typical coal sample in required measurement Burst Tendency region is selected at the primary scene of this method, carries out polishing processing, and makes coal sample stratification adjustment support.Support is adjusted using coal sample stratification, adjusts locus of the coal sample in stratification adjusts support, prepares the certified reference coal test specimen of several typical stratification angles.Accordingly tested, obtain data and be fitted.The stratification angle of field regions coal sample is brought into the relational expression that fitting obtains, obtain the numerical value of the Burst Tendency index of the subterranean zone, you can judge corresponding Burst Tendency type.
Description
Art
The invention belongs to coal and rock mechanics field, especially a kind of coal Burst Tendency test side based on stratification effect
Method, it is the supplement to Burst Tendency method of testing, suitable for the Burst Tendency method of testing of the coal containing stratification.
Background technology
Burst Tendency is to judge whether coal seam can occur an important measurement index of bump, is early warning and anti-
The basis of model bump.How the Burst Tendency in Accurate Determining coal seam, just turn into an important research contents.It is right at present
Typically refer in the test of Burst Tendency according to three indexs, respectively dynamic destruction time, elastic energy index, impact energy
Number, but three kinds of current test indexs all do not account for influence of the stratification to test result of coal.And coal is as a kind of stratification
With the rock mass of hugger anormogenesis, its Burst Tendency is influenceed by stratification deeply, if therefore when carrying out impact test not
Consider the texture feature of coal, current Burst Tendency method of testing can cause two larger drawbacks：When live coal seam its
Stratification is often complicated and changeable, when cause the impact to test, even in same coal seam, because stratification is different, as a result there is also
Larger discrete case, it is impossible to accurate reference is provided for live Coal Seam sex determination, second, different in measurement different zones
During the Burst Tendency of stratification coal sample, cause the discrete of result because stratification is different, making it difficult to recognize live Coal Seam
Tendentious rule.Therefore a kind of coal Burst Tendency method of testing based on stratification effect is proposed, not only can be very good to solve
Certainly original method of testing causes experimental result the drawbacks of larger discrete to be present, and it is different to provide a kind of measure field coal seam
Region, the method for coal Burst Tendency under different stratification angles.
Coal Burst Tendency under different stratification angles can be tested and can answered therefore, it is necessary to find one kind
Universal method for scene, it is therefore an objective to which to provide one whole for the Burst Tendency of the coal under the difference stratification angle of in-site measurement coal seam
The method of set, it is larger discrete to solve the problems, such as that experimental result caused by original method of testing is present, incline for the impact of in-site measurement coal
Tropism provides a kind of it is contemplated that the reference method of stratification effect.This to coal Burst Tendency research and related engineering practice tool
There is important references value
Based on above thought, a kind of coal Burst Tendency method of testing based on stratification effect is devised.
Goal of the invention
The problem of present invention exists for prior art, it is therefore an objective to provide one kind to coal burst trend under different stratification angles
Property tested and applied to scene universal method, be embodied as the impact of in-site measurement different zones, different stratification coal samples
Tendentiousness provides a kind of reference method, coal seam reason and the relation of impact characteristics finally can be accurately obtained, so as to field geology structure
The impact characteristics of the coal of different stratification angles are studied caused by making reason, are made up the conventional coal seam reason effect that do not account for and are led
The shortcomings that causing measurement result to accurately reflect Coal Seam, research of the patent to coal petrography hydrodynamic properties has important meaning
Justice.
Brief description of the drawings
Fig. 1 is the structure of coal seam reason adjustment support and the name identification figure of each several part.
Embodiment
A kind of coal Burst Tendency method of testing based on stratification effect, comprises the following steps：
S101：Scene measures the typical coal sample in Burst Tendency region needed for selecting, and carries out polishing processing.
S102：Make coal sample stratification adjustment support.
S103：Support is adjusted using coal sample stratification, locus of the adjustment coal sample in stratification adjusts support, prepares stratification
Angle is 0 °, 15 °, 30 °, 45 °, 60 °, 75 °, 90 ° of certified reference coal test specimen, each each 5 coal samples of angle, and number record.
S104：By the stratification angle processed be 0 ° 5 coal samples according to《Burst Tendency of Coal Seam is classified and the survey of index
Determine method》Tested, obtain the elastic energy index of 5 coal samples, average, be designated as Y1；While 5 coal samples of acquisition
Impact energy index, average, be designated as Z1, insert table 1.Measure successively afterwards stratification characteristic for 15 °, 30 °, 45 °, 60 °,
75 °, 90 ° of elastic energy index and impact energy index, final data Y2, Y3, Y4, Y5, Y6, Y7 are obtained after averaging,
And insert table 1.
The test result of the different stratification angle elastic energy indexes of table 1 and impact energy index
S105：Origin softwares are opened, the data of table 1 obtained by input S104 steps, fitting of a polynomial instrument is selected, is fitted
Relation, impact energy index Z and stratification angle X relation to elastic energy index Y and stratification angle X.The function shape of fitting
Formula is:
Y=a0+a1X+a2X2+a3X3+a4X4 (1)
Z=b0+b1X+b2X2+b3X3+b4X4 (2)
S106：The stratification angle of measure field region coal sample, the stratification angle is brought into the formula (1) obtained after fitting
In formula (2), the elastic energy index and impact energy index that are calculated are exactly the Burst Tendency index of the subterranean zone
Numerical value, according to《Burst Tendency of Coal Seam is classified and the assay method of index》It can determine that corresponding Burst Tendency type.Together
Sample can obtain the Burst Tendency type in other regions of coal seam, that is, obtain live different zones, different stratification coal samples
Burst Tendency.
Select the required typical coal sample specific method for measuring Burst Tendency region in scene described in S101 steps：Choose
The region in Burst Tendency coal seam need to be determined as coal collection point, under conditions of not causing mechanical property to influence on coal sample, led to
Cross the means such as weak blast and fry a certain amount of coal body, then hand picking size is that (length, width and height fluctuate not 55 × 55 × 35cm
More than 5cm) one piece of coal sample.
Polishing described in S101 steps processes specific method and is：Coal sample is processed with sander, by 55 × 55cm's
Radius 25cm and two discs of face are processed into two faces, then successively using sander and two circles of ball mill polishing coal sample
Face, the height of coal sample is set to be reduced to 30cm by 35cm, and each the maximum height difference in face is less than 0.5cm in two faces.Use ball
Grinding machine is polished the one side that the coal sample radius is 25cm, is stopped when slope reaches 1%, is by the radius of polishing
25cm face is designated as C1.
Coal sample stratification adjustment support described in S102 steps, including coal sample place plate C2 and height fix pillar (C and
D), height adjustable pillar (A and B), coal sample hold-down bars (A, B, C, D).The size that coal sample places plate C2 is 80 × 80 × 10cm.
Coal sample place plate C2 upward, the face that size is 80 × 80 be designated as plate face C21, for placing coal sample, relative with plate face C21 one
Face is designated as plate face C22.Highly fixed pillar C, the fixed pillar D of height length are fixed, and are 100cm, radius 2.5cm.Highly
Adjustable prop A, height adjustable pillar B adjustable in length, structure are two layers of sleeve pipe, and outer layer sleeve length is 100cm, internal layer set
Pipe range 70cm, have on inner sleeve by centimetre in units of and can be accurate to the scale of millimeter, range 65cm.Using 2 fixations
Hinged-support connects coal sample and places plate C2 and height adjustable pillar (A and B) respectively.Coal sample is connected respectively using 2 fixed-hinged supports
Place plate C2 and height fixes pillar (C and D).4 are fixed hinge each side 15cm away from plate respectively.Coal sample hold-down bars A, coal sample are solid
It is cylindrical iron staff to determine rod B, coal sample hold-down bars C, coal sample hold-down bars D, radius 5cm, a height of 30cm.
Coal sample stratification adjustment support described in S102 steps, described connection coal sample place plate C2 and height adjustable pillar
A fixed hinge, it is horizontal positioned that coal sample placed into plate C2 during beginning, and fixed hinge is connected with height adjustable pillar A, making highly can
Adjust pillar A to place vertically, when height adjustable pillar A axis crosses A points, will cut with scissors and be fixed on coal sample and place A points on plate C2.Make
Height adjustable pillar A when being rotated around hinge, its axis at a time can be parallel with 2 points of A, D line.It is similar to install
The fixed pillar B of connection height fixed-hinged support, the fixed pillar C of connection height fixed-hinged support, the fixed pillar D of connection height
Fixed-hinged support
Coal sample stratification adjustment support described in S102 steps, described hold-down bars are used for the fixed coal sample processed, prevented
Only its changing of the relative positions, its position are：First on plate face C21, two diagonal are connected with white chalk.With plate face C21 four tops
Point does the sector that four radiuses are 29 centimetres, is drawn with white chalk, intersect to obtain four with diagonal respectively as the center of circle
Point, point P, point Q, point M, point N are designated as respectively.Coal sample placement plate C2 is horizontal positioned, and plate face C21 is placed upward.By four coal samples
Hold-down bars A, B, C, D are respectively welded in point P, point Q, point M, point N, make the axis of each rod perpendicular to horizontal plane, and pass through respectively a little
P, point Q, point M, point N.
S103 steps include herein below：
Step 1：Level altitude fixes pillar C and height fixes pillar D position and height, and coal sample C1 is faced into decentralization
Put on the plate face C21 for placing plate C2 in support bracket fastened coal sample, adjustment height adjustable pillar A, height adjustable pillar B height,
Constantly judge during adjustment and measure stratification angle, finally coal sample stratification (is no more than up and down with the horizontal 0 ° of placement
0.5 °), level altitude adjustable prop A, height adjustable pillar B position and height.Step 2：In the C1 faces circumferential edges of coal sample
Four arbitrfary points are portrayed at place, and most two points of four points overlap.Draw a straight line two-by-two, make this two straight lines respectively
Perpendicular bisector is met at a bit, and the intersection point is the center of circle in cylinder coal sample C1 faces, is designated as O points.Make one from the center of circle is any
Ray, ray a is designated as, is drawn with white chalk in C1 faces.Using O points as origin, ray a is one side, uses angulation tolerance clockwise
Go out 72 °, make another a line, drawn with white chalk, be designated as ray b.Folded region is designated as region I between ray a and ray b.
Similarly, emergent ray c, d, e are made every 72 ° clockwise.Region is designated as region II between ray b and ray c；Area between ray c and ray d
Domain is designated as region III；Region is designated as region IV between ray d and ray e；Region is designated as region V between ray a and ray e.
Step 3：Drill bit is moved into I regions, drills down to coal sample, cut using rock drill, stone mill, stone sawing machine,
Polish, be allowed to meet《Burst Tendency of Coal Seam is classified and the assay method of index》It is required that it is labeled as No. 0-1.Then by drill bit
Region II, III, IV, V are moved to respectively, drills through coal sample separately down, are respectively labeled as 0-2,0-3,0-4,0-5 coal sample, so far
The coal sample test specimen that stratification angle is 0 ° is made.
Step 4：Using vernier caliper measurement coal sample height, and coal sample center is divided into two parts, existed with white chalk
The side of coal sample cylinder is detoured one week, and coal sample is divided into two height identical cylinder coal samples.Part comprising C1 faces is designated as
E, the part not comprising C1 faces are designated as F.Two parts are divided into by its height with graduated scale in the F of region, with white chalk around F areas
Domain cylindrical side surrounding draws a line, and the circumference is designated as K.Adjust bit location so that drill axis and horizontal plane weight
Close, drill bit moved into I regions and F area coincidences position, and drill axis is alignd with K lines, drill through coal sample, using rock drill,
Stone mill, stone sawing machine are cut, polished, and are allowed to meet《Burst Tendency of Coal Seam is classified and the assay method of index》It is required that
It is labeled as No. 90-1.Then drill bit is moved to respectively region II, III, IV, V with region F overlapping positions, respectively level drill through coal
Sample, 90-2,90-3,90-4,90-5 coal sample are respectively labeled as, the coal sample test specimen that stratification angle is 90 ° is so far made.
Step 5：Level altitude fixes pillar C and height fixes pillar D position and height, adjusts height adjustable pillar
A, height adjustable pillar B height, coal sample stratification is made with the horizontal fixing its position and height after 15 °.Adjust bit location,
Make drill axis with after horizontal plane, the coal sample test specimen that stratification angle is 15 ° is made according to step 3 operation.Adjust immediately
Bit location so that drill axis overlaps with horizontal plane, according to step 4 operate, that is, it is 75 ° that stratification angle, which is made,
Coal sample test specimen.
Step 6：On the basis of step 5, adjustment height adjustable pillar A, height adjustable pillar B height, make coal sample
Stratification after 30 ° with the horizontal fixing its position and height.Bit location is adjusted, makes drill axis with after horizontal plane, pressing
The coal sample test specimen that stratification angle is 30 ° is made according to step 3 operation.Bit location is adjusted immediately so that drill axis and level
Face overlaps, and according to step 4 operate, that is, the coal sample test specimen that stratification angle is 60 ° is made.
Step 7：On the basis of step 6, adjustment height adjustable pillar A, height adjustable pillar B height, make coal sample
Stratification after 45 ° with the horizontal fixing its position and height.Bit location is adjusted, makes drill axis with after horizontal plane, pressing
The coal sample test specimen that stratification angle is 45 ° is made according to step 3 operation.
The present invention is to find a kind of can be tested the coal Burst Tendency of different stratification angles and can be with
Universal method applied to scene.Compared with current coal Burst Tendency method of testing, there is advantages below：Current test
Method testing index does not all account for influence of the stratification to test result of coal, it is impossible to accurately reflects coal under different stratifications
Burst Tendency, and in fact the stratification angle of coal has a great influence to Burst Tendency result, and live coal seam reason is changeable, causes
Test result exist it is larger discrete, actually it is this it is discrete formally due to the stratification angle of coal is different and caused by.In this patent
The Burst Tendency method of testing based on coal seam reason effect provided can be very good solve this problem, be adjusted using coal sample stratification
It is 0 °, 15 °, 30 °, 45 °, 60 °, 75 °, 90 ° of certified reference coal test specimen that whole support, which prepares stratification angle, carries out elastic energy and refers to
Number and impact energy index test, show that data are fitted, obtain coal sample elastic energy index and impact energy index and layer
The functional relation of angle is managed, and then the Burst Tendency numerical value of any stratification angle in the subterranean zone can conveniently be calculated,
This is significant to coal and rock kinetics Quality Research.
Described herein is to a kind of explanation of the coal Burst Tendency method of testing based on stratification effect.The present invention
Person of ordinary skill in the field can make various modifications or supplement to described specific embodiment or using class
As mode substitute, but spirit without departing from the present invention or surmount scope defined in appended claims.
Claims (4)
1. a kind of Burst Tendency method of testing based on coal seam reason effect, it is characterised in that comprise the steps of：
Step S101：Scene measures the typical coal sample in Burst Tendency region needed for selecting, and carries out polishing processing.
Step S102：Make coal sample stratification adjustment support.
Step S103：Support is adjusted using coal sample stratification, locus of the adjustment coal sample in stratification adjusts support, prepares stratification
Angle is 0 °, 15 °, 30 °, 45 °, 60 °, 75 °, 90 ° of certified reference coal test specimen, each each 5 coal samples of angle, and number record.
Step S104：By the stratification angle processed be 0 ° 5 coal samples according to《Burst Tendency of Coal Seam is classified and the survey of index
Determine method》Tested, obtain the elastic energy index of 5 coal samples, average, be designated as Y1；Rushing for 5 coal samples is obtained simultaneously
Nergy Index is hit, is averaged, is designated as Z1, inserts table 1.Stratification characteristic is measured successively afterwards as 15 °, 30 °, 45 °, 60 °, 75 °,
90 ° of elastic energy index and impact energy index, obtains final data Y2, Y3, Y4, Y5, Y6, Y7, and fill out after averaging
Enter table 1.
The test result of the different stratification angle elastic energy indexes of table 1 and impact energy index
Step S105：Origin softwares are opened, the data of table 1 obtained by input S104 steps, fitting of a polynomial instrument is selected, is fitted
Relation, impact energy index Z and stratification angle X relation to elastic energy index Y and stratification angle X.The function shape of fitting
Formula is:
Y=a0+a1X+a2X2+a3X3+a4X4 (1)
Z=b0+b1X+b2X2+b3X3+b4X4 (2)
Step S106：The stratification angle of measure field region coal sample, by the stratification angle be brought into after fitting obtained formula (1) and
In formula (2), the elastic energy index and impact energy index that are calculated are exactly the Burst Tendency index of the subterranean zone
Numerical value, according to《Burst Tendency of Coal Seam is classified and the assay method of index》It can determine that corresponding Burst Tendency type.Equally
It can obtain the Burst Tendency type in other regions of coal seam, that is, obtain live different zones, different stratification coal samples are rushed
Hit tendentiousness.
2. step S101 according to claim 1, it is characterised in that include following methods：
Select the required typical coal sample specific method for measuring Burst Tendency region in scene described in S101 steps：Selection needs to survey
The region in Burst Tendency coal seam is determined as coal collection point, under conditions of not causing mechanical property to influence on coal sample, by weak
The means such as explosion fry a certain amount of coal body, and then hand picking size is that (length, width and height fluctuate to be no more than 55 × 55 × 35cm
One piece of coal sample 5cm).
Polishing described in S101 steps processes specific method and is：Coal sample is processed with sander, by two of 55 × 55cm
Radius 25cm and two discs of face are processed into face, then successively use sander and two discs of ball mill polishing coal sample,
The height of coal sample is set to be reduced to 30cm by 35cm, and each the maximum height difference in face is less than 0.5cm in two faces.Use ball mill
The one side that the coal sample radius is 25cm is polished, stopped when slope reaches 1%, the radius by polishing is 25cm's
Face is designated as C1.
3. step S102 according to claim 1, it is characterised in that comprise the steps of：
Coal sample stratification adjustment support described in S102 steps, including coal sample places plate C2 and height fixes pillar (C and D), height
Spend adjustable prop (A and B), coal sample hold-down bars (A, B, C, D).The size that coal sample places plate C2 is 80 × 80 × 10cm.Coal sample is put
Put plate C2 upward, size be 80 × 80 face be designated as plate face C21, for placing coal sample, the one side relative with plate face C21 is designated as plate
Face C22.Highly fixed pillar C, the fixed pillar D of height length are fixed, and are 100cm, radius 2.5cm.Height adjustable pillar
A, height adjustable pillar B adjustable in length, structure are two layers of sleeve pipe, and outer layer sleeve length is 100cm, and inner layer sleeve is grown
70cm, have on inner sleeve by centimetre in units of and can be accurate to the scale of millimeter, range 65cm.Using 2 fixed-hinged supports
Coal sample is connected respectively places plate C2 and height adjustable pillar (A and B).Coal sample is connected respectively using 2 fixed-hinged supports places plate
C2 and height fix pillar (C and D).4 are fixed hinge each side 15cm away from plate respectively.Coal sample hold-down bars A, coal sample hold-down bars B,
Coal sample hold-down bars C, coal sample hold-down bars D are cylindrical iron staff, radius 5cm, a height of 30cm.
Coal sample stratification adjustment support described in S102 steps, described connection coal sample place plate C2's and height adjustable pillar A
Fixed hinge, it is horizontal positioned that coal sample placed into plate C2 during beginning, and fixed hinge is connected with height adjustable pillar A, make height adjustable
Pillar A is placed vertically, when height adjustable pillar A axis crosses A points, will be cut with scissors and is fixed on coal sample and places A points on plate C2.So that
For height adjustable pillar A when being rotated around hinge, its axis at a time can be parallel with 2 points of A, D line.It is similar can the company of installation
Connect the fixed pillar B of height fixed-hinged support, the fixed-hinged support for connecting the fixed pillar C of height, connection height and fix pillar D's
Fixed-hinged support
Coal sample stratification adjustment support described in S102 steps, described hold-down bars are used for the fixed coal sample processed, prevent it
The changing of the relative positions, its position are：First on plate face C21, two diagonal are connected with white chalk.With plate face C21 four summits point
Not Zuo Wei the center of circle, it is 29 centimetres of sector to do four radiuses, is drawn with white chalk, intersect to obtain four points with diagonal, is divided
Point P, point Q, point M, point N are not designated as.Coal sample placement plate C2 is horizontal positioned, and plate face C21 is placed upward.By four coal sample hold-down bars
A, B, C, D are respectively welded in point P, point Q, point M, point N, make the axis of each rod perpendicular to horizontal plane, and respectively by point P, point Q,
Point M, point N.
4. step S103 according to claim 1, it is characterised in that comprise the steps of：
Step 1：Level altitude fixes pillar C and height fixes pillar D position and height, and coal sample C1 placed face downs are existed
Support bracket fastened coal sample is placed on plate C2 plate face C21, adjustment height adjustable pillar A, height adjustable pillar B height, adjustment
During constantly judge and measure stratification angle, finally coal sample stratification (is no more than up and down with the horizontal 0 ° of placement
0.5 °), level altitude adjustable prop A, height adjustable pillar B position and height.
Step 2：Four arbitrfary points are portrayed at the C1 faces circumferential edges of coal sample, and most two points of four points overlap.Connect two-by-two
In alignment, the perpendicular bisector for making this two straight lines respectively is met at a bit, and the intersection point is the center of circle in cylinder coal sample C1 faces,
It is designated as O points.Make a ray from the center of circle is any, be designated as ray a, drawn with white chalk in C1 faces.Using O points as original
Point, ray a are one side, go out 72 ° with angulation tolerance clockwise, make another a line, drawn with white chalk, are designated as ray b.Penetrate
Folded region is designated as region I between line a and ray b.Similarly, emergent ray c, d, e are made every 72 ° clockwise.Between ray b and ray c
Region is designated as region II；Region is designated as region III between ray c and ray d；Region is designated as region IV between ray d and ray e；Ray
Region is designated as region V between a and ray e.
Step 3：Drill bit is moved into I regions, drills down to coal sample, is cut, ground using rock drill, stone mill, stone sawing machine
It is flat, it is allowed to meet《Burst Tendency of Coal Seam is classified and the assay method of index》It is required that it is labeled as No. 0-1.Then by drill bit point
Region II, III, IV, V are not moved to, drills through coal sample separately down, are respectively labeled as 0-2,0-3,0-4,0-5 coal sample, are so far
The coal sample test specimen that stratification angle is 0 ° is made.
Step 4：Using vernier caliper measurement coal sample height, and coal sample center is divided into two parts, with white chalk in coal sample
The side of cylinder is detoured one week, and coal sample is divided into two height identical cylinder coal samples.Part comprising C1 faces is designated as E, no
Part comprising C1 faces is designated as F.Two parts are divided into by its height with graduated scale in the F of region, is justified with white chalk around F regions
Post side surrounding draws a line, and the circumference is designated as K.Adjust bit location so that drill axis overlaps with horizontal plane, will bore
Head moves to I regions and F area coincidences position, and drill axis is alignd with K lines, drills through coal sample, using rock drill, stone mill,
Stone sawing machine is cut, polished, and is allowed to meet《Burst Tendency of Coal Seam is classified and the assay method of index》It is required that it is labeled as
No. 90-1.Then drill bit is moved to respectively region II, III, IV, V with region F overlapping positions, respectively level drill through coal sample, respectively
90-2,90-3,90-4,90-5 coal sample are labeled as, the coal sample test specimen that stratification angle is 90 ° is so far made.
Step 5：Level altitude fixes pillar C and height fixes pillar D position and height, adjustment height adjustable pillar A, height
Adjustable prop B height is spent, makes coal sample stratification with the horizontal fixing its position and height after 15 °.Bit location is adjusted, makes brill
Head axis is with after horizontal plane, the coal sample test specimen that stratification angle is 15 ° is made according to step 3 operation.Drill bit is adjusted immediately
Position so that drill axis overlaps with horizontal plane, according to step 4 operate, that is, the coal sample that stratification angle is 75 ° is made
Test specimen.
Step 6：On the basis of step 5, adjustment height adjustable pillar A, height adjustable pillar B height, make coal sample stratification
With the horizontal fixing its position and height after 30 °.Bit location is adjusted, after making drill axis and horizontal plane, according to step
The coal sample test specimen that stratification angle is 30 ° is made in rapid three operation.Bit location is adjusted immediately so that drill axis and horizontal plane weight
Close, according to step 4 operate, that is, the coal sample test specimen that stratification angle is 60 ° is made.
Step 7：On the basis of step 6, adjustment height adjustable pillar A, height adjustable pillar B height, make coal sample stratification
With the horizontal fixing its position and height after 45 °.Bit location is adjusted, after making drill axis and horizontal plane, according to step
The coal sample test specimen that stratification angle is 45 ° is made in rapid three operation.
Described herein is only to a kind of illustration for the Burst Tendency method of testing that effect is managed based on coal seam.This
The technical staff of technical field that the present invention belongs to can make various modifications or supplement or adopt to described specific embodiment
Substituted with similar mode, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
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