CN107796679B - Non-standard coal based on analog material or non-standard rock sample production method - Google Patents
Non-standard coal based on analog material or non-standard rock sample production method Download PDFInfo
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- CN107796679B CN107796679B CN201711279237.8A CN201711279237A CN107796679B CN 107796679 B CN107796679 B CN 107796679B CN 201711279237 A CN201711279237 A CN 201711279237A CN 107796679 B CN107796679 B CN 107796679B
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- analog material
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- 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
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- 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
- G01N1/36—Embedding or analogous mounting of samples
-
- 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
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/366—Moulds; Demoulding
Abstract
The non-standard coal or non-standard rock sample production method that the invention discloses a kind of based on analog material, analog material based on same composition and ratio manufactured analog material density under identical molding parameter is identical, according to waiting that making non-standard height of specimen calculates its volume, and then obtain the quality for waiting making analog material needed for non-standard test specimen of certain altitude, by the analog material filling molding die and molding parameter of the certain mass weighed, test specimen demoulding, maintenance are finally carried out, the making of non-standard coal or non-standard rock sample is completed.It is of the invention easy, quick, overcome test specimen be difficult to cut and cutting process in due to the shortcomings that ratio of briquetting caused by breakage is low or even is difficult to that required size test specimen is made, the making of arbitrary dimension test specimen can disposably be completed, specimen molding rate, precision are guaranteed, and have wide dissemination.
Description
Technical field
The present invention relates to a kind of coal rock specimen production method more particularly to a kind of non-standard coals based on analog material or non-
Standard rock sample production method belongs to rock-like materials preparing technical field.
Background technology
China is that maximum coal production state and country of consumption, coal occupy importantly in China's energy resource structure in the world
Position.However, coal resources, as a kind of non-regeneration energy, in China, the uneven and regional demand unevenness of Regional Distribution makes
The form also extremely sternness that the coal resources in China face is obtained, is to meet to coal resources high intensity demand, the east mine in China
Well has to turn to deep mining and mining depth increases year by year, and this trend is further apparent in recent years.As coal mine is to deep
Exploitation is influenced further significantly by high temperature, highland pressure, high karst water and gas, some mine motive force disasters both showed produce coal with
The Partial Feature of Gas Outburst, and have the Partial Feature of bump, two kinds of dynamic disasters coexist, interact, mutually each other
It is compound.However, impact, prominent two kinds of disasters are compound, effect on earth how, how system research, analysis quantify them
Between relationship, current research is rarely reported.Simple coal, rock research cannot be that similar engineering disaster is effectively instructed,
Non-standard coal, rock test specimen (are combined on small scale and standard are made by the system that coal, rock regard an entirety as according to a certain percentage
Test specimen is analyzed and researched, and analog material is prepared in large scale and carries out large-scale similarity simulation experiment progress system research) it is ground
Study carefully the effective ways and reasonable approach for having become analysis coal mine composite power disaster.
Test specimen is caused to be difficult to be molded however, coal, rock especially coal are developed due to joint fissure height, intensity difference
It is larger, thus select raw coal, rock test specimen can not accurately be coal, series of rocks unite quantitative research provide reliably, be effectively ensured.
And the coal or rock sample based on analog material making can preferably overcome this problem.But it is made currently based on analog material
Test specimen is typically standard specimen, and analog material, which is often filled up mold compacting, can be obtained, it is contemplated that different component and ratio
Material compacting rate and crushing force it is different, and then cause to utilize sample dimensions made of this production method and standard component ruler
Very little deviation is larger, and reasonable, the effective reference for non-standard coal or non-standard rock sample making even more neither one.
Invention content
In view of the deficiencies of the prior art, the present invention provides a kind of non-standard coal based on analog material or the examination of non-standard rock
Part production method, the manufactured analog material density phase under identical molding parameter of the analog material based on same composition and ratio
Together, the quality of test specimen to be produced is calculated according to height of specimen to be produced, weighs the analog material filling mold of the quality simultaneously
Molding parameter finally carries out test specimen demoulding, the making of non-standard coal or non-standard rock sample can be completed in maintenance.For
It realizes above-mentioned purpose, adopts the following technical scheme that：
Non-standard coal based on analog material or non-standard rock sample production method, comprise the steps of：
(a) ratio of the component and each component for making coal or rock analog material is determined；
(b) it is mixed and stirred for the analog material of determining certain component and ratio uniformly, to weigh quality according to step (a)
For m1Analog material filling molding die and molding parameter；
(c) it is m that test specimen, which demoulds and measures quality,1Analog material shaping test piece height h1, calculate the density of shaping test piece
ρ；
(d) it needs to make height to be h according to research2Test specimen, weigh quality be m2Analog material filling molding die simultaneously
Compression moulding；
(e) test specimen demoulding, maintenance, complete.
Further, the non-standard coal based on analog material or non-standard rock sample production method, characterized in that step
(b) molding parameter described in includes load mode, loading velocity, briquetting pressure, dwell time.
Further, the non-standard coal based on analog material or non-standard rock sample production method, characterized in that step
(b) molding parameter described in is identical as molding parameter described in step (d).
Further, the non-standard coal based on analog material or non-standard rock sample production method, characterized in that step
(b) molding die described in is identical as the shape of molding die described in step (d), is all r for radius, is highly h3Circle
Column construction, wherein h3＞ h1And h3＞ h2。
Further, the non-standard coal based on analog material or non-standard rock sample production method, characterized in that the step
Suddenly (b) and quality in step (c) are m1Analog material and the step (d) in quality be m2The component of analog material and each
Component ratio is identical.
Further, the non-standard coal based on analog material or non-standard rock sample production method, characterized in that step
(c) density p of shaping test piece described in is：ρ=m1/(πr2h1)。
Further, the non-standard coal based on analog material or non-standard rock sample production method, characterized in that the step
Suddenly m in (d)2Meet m2=ρ π r2h2=m1h2/h1。
The present invention has the advantages that：
1. of the invention easy, quick, overcome test specimen be difficult to cut and cutting process in due to being molded caused by breakage
The shortcomings that rate is low or even is difficult to that required size test specimen is made can disposably complete the making of arbitrary dimension test specimen, specimen molding
Rate, precision are guaranteed.
2. the analog material of configuration is under the premise of meeting similitude, homogeneity, homogeneity are preferable, disclosure satisfy that intensity
Unification, overcome coal, rock especially coal due to joint fissure height develop caused by test specimen be difficult to be molded, intensity difference
Anisotropic larger problem, the quantitative research to carry out system to coal, rock provide it is reliable, be effectively ensured.
3. using the quantitative research of non-standard coal or non-standard rock sample row system made of the method for the present invention, after being
The large-scale similarity simulation experiment of phase provides indispensable underlying parameter, and multiple for coal mines such as bump-coal and gas prominents
The prevention for closing dynamic disaster also has positive effect.
Specific implementation mode
To fully demonstrate the features and advantages of the present invention, described in detail below in conjunction with specific embodiment.
Bulk raw coal is chosen at scene, transports laboratory back and drills through test specimen, in drilling operation, due to joint, crack hair in raw coal
It educates, coal quality is relatively soft, it is found that specimen molding rate is relatively low, and integrality is poor, and mechanical property survey is carried out to the raw coal test specimen produced
Examination, statistics obtain：Raw coal uniaxial compressive strength is substantially distributed in 11-15MPa or so, and strength difference is larger between raw coal test specimen,
Discreteness is higher.Top plate (gritstone) homogeneity is preferable, and discreteness is smaller, and intensity is more approximately uniformly 35MPa, therefore,
This experiment only considers to prepare the analog material of coal.(present embodiment is only with coal petrography height ratio for 1:1 (coal, rock height be 50
Mm it) is illustrated, other coal petrography height are similar with present embodiment than analog material making, and details are not described herein.) specifically walk
It is rapid as follows：
(a) energy relationship between quantitative research coal, rock, the fine coal for choosing two kinds of grain sizes of 40-60 mesh and 60-80 mesh are made
Adhesive, activated carbon and moisture are added by a certain percentage and prepares analog material using the thin river sand of 40-60 mesh as auxiliary material for aggregate,
It is required that it is similar to raw coal to reach uniaxial compressive strength, elasticity modulus and Adsorption and desorption characteristic, wherein binder select marked as
The high-early (strength) cement of R425.Mix proportion scheme is as follows：Coal dust:Cement:Thin river sand:Activated carbon:Water=8:1.5:0.5:0.1:1；
(b) it is m above-mentioned each component material to be mixed according to proportioning and weigh certain mass1The similar material of (200g)
Material, filling radius are r (50mm), are highly h3The cylindrical sleeve of (180mm) presses it on TAW-2000 testing machines
System, and molding parameter is set, molding parameter is specific as follows：Load mode (load on), loading velocity (300N/s), molding
Pressure (100MPa), dwell time (15min)；
(c) test specimen compacting terminates, and demoulds and measures height of specimen h1(7.55cm), calculation testing piece density p (1.35gcm
-3), wherein ρ=m1/(πr2h1)；
(d) it is h to make height2The test specimen of (5cm) weighs quality m2The analog material filling molding die of (132.5g) is simultaneously
Compression moulding (molding parameter is identical as step (b)), wherein m2=ρ π r2h2=m1h2/h1；
(e) test specimen demoulding, maintenance, complete.
Although the above-mentioned specific implementation mode to the present invention is described, not to the limit of the scope of the present invention
System, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art do not need
Make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (2)
1. the non-standard coal based on analog material or non-standard rock sample production method, characterized in that comprise the steps of：
(a) ratio of the component and each component for making coal or rock analog material is determined；
(b) each component for the analog material that step (a) determines be mixed and stirred for uniformly, weighing the quality after stirring evenly
For m1Analog material insert molding die, molding parameter suppressed；
(c) it is m that test specimen, which demoulds and measures quality,1Analog material shaping test piece height h1, calculate the density p of shaping test piece；
(d) it needs to make height to be h according to research2Test specimen, weigh quality be m2Analog material insert molding die, setting
Molding parameter is suppressed；
(e) test specimen demoulding, maintenance, complete；
Molding parameter described in step (b) is identical as molding parameter described in step (d)；
Molding die described in step (b) is identical as the shape of molding die described in step (d), is all r for radius, is highly
h3Cylindrical structure, wherein h3＞ h1And h3＞ h2；
Quality is m in the step (b) and step (c)1Analog material and the step (d) in quality be m2Analog material
Component and each component ratio it is identical；
M in the step (d)2Meet m2=ρ π r2h2=m1h2/h1；
The density p of shaping test piece described in step (c) is：ρ=m1/(πr2h1)。
2. the non-standard coal according to claim 1 based on analog material or non-standard rock sample production method, special
Sign is that molding parameter described in step (b) includes load mode, loading velocity, briquetting pressure and dwell time.
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| CN107796679B true CN107796679B (en) | 2018-09-07 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738267A (en) * | 2019-02-17 | 2019-05-10 | 西安科技大学 | The system and method for quick Fabrication class coal petrography analog material test specimen |
| CN109946147B (en) * | 2019-04-03 | 2020-03-10 | 中国矿业大学 | Preparation method of coal-series composite reservoir fracturing physical simulation test piece |
| CN111812300A (en) * | 2020-07-21 | 2020-10-23 | 中煤科工集团重庆研究院有限公司 | Preparation material for remolding coal series mud rock sample and batch preparation method thereof |
| CN114166614B (en) * | 2021-12-16 | 2024-01-02 | 广西大学 | Two-way movable manufacturing die and method for rock sample of similar material in diagenetic geothermal environment |
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