CN103712853A - Method and device for testing mechanical performance of coal mine underground filling material - Google Patents

Method and device for testing mechanical performance of coal mine underground filling material Download PDF

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Publication number
CN103712853A
CN103712853A CN201410002903.3A CN201410002903A CN103712853A CN 103712853 A CN103712853 A CN 103712853A CN 201410002903 A CN201410002903 A CN 201410002903A CN 103712853 A CN103712853 A CN 103712853A
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CN
China
Prior art keywords
coal mine
mechanical performance
clamp
retrofilling
testing
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Pending
Application number
CN201410002903.3A
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Chinese (zh)
Inventor
展晓元
张兰芹
王庆恒
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Shandong University of Science and Technology
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Shandong University of Science and Technology
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Publication date
Application filed by Shandong University of Science and Technology filed Critical Shandong University of Science and Technology
Priority to CN201410002903.3A priority Critical patent/CN103712853A/en
Publication of CN103712853A publication Critical patent/CN103712853A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a method and a device for testing the mechanical performance of a coal mine underground filling material. The device for testing the mechanical performance of the coal mine underground filling material is divided into two parts, namely an upper clamp and a lower clamp, wherein the upper clamp and the lower clamp are combined together to form a universal joint. A test sample is prepared from the coal mine underground filling material according to a burdening ratio and is placed in the middle of the universal joint; pulling force, which is parallel to the axial direction of a connecting rod of the upper clamp and the lower clamp of the device, is applied to the connecting rod, and is converted into pressure applied to the test sample through the device; an angle between inner and outer lining plate planes of the upper clamp and the lower clamp can be adjusted by adjusting bolts on the clamps, so that the filling material bears vertical pressure stress or pressure stress with certain orientation. The device for testing the mechanical performance of the coal mine underground filling material is compact in structure, easy to operate and maintain and reliable in use, and can be used for simulating acting force to a filling wall under different coal mine underground roof conditions. The method is simple and credible, and is widely applicable to detection on the mechanical performance of the coal mine underground filling material.

Description

A kind of coal mine retrofilling material mechanical performance method of testing and device
Technical field
The present invention relates under coal mine mechanic property test method and the proving installation of compaction material in strip-type filling mining technique, be applicable to the Mechanics Performance Testing that coal mine gob strip-type filled wall and gob-side entry retaining protect lane filled wall.
Background technology
In coal production process, in order to solve land subsidence that " three times " press coal, control production to cause, to reclaim in process of coal mining and stay the coal column of establishing, the normal method that adopts filling mining, because compaction material source is deficient, limited the application of coal mine filling production technique, in order to reduce the consumption of compaction material and to reduce filling cost, strip-type filling mining is the mode that has application prospect most.
In stowing operation, in order to monitor compaction material to the support effect of top board and rock stratum, goaf sedimentation situation, main means are that pressure transducer and displacement transducer are set in compaction material at present, and cost is higher.And for strip-type filled wall, when top board is moved, variation has also occurred its loading direction being subject to, originally stay data that the sensor established obtains deviation to some extent unavoidably; After strip-type filled wall is set up, to the mechanical property monitoring of compaction material, can only test by the method for unbearable sampling, method is loaded down with trivial details, and workload is large; After Proportioning of filling materials is determined, larger at the stress condition of laboratory simulation strip-type filled wall, work Practical significance that the mechanical property of compaction material is tested.
Summary of the invention
(1) goal of the invention
Coal mine retrofilling material mechanical performance proving installation compact conformation of the present invention, simple to operate, be easy to safeguard, use reliable; Method of testing is simply credible, protects aspect the Mechanics Performance Testing of lane filled wall have practicality widely at coal mine gob strip-type filled wall and gob-side entry retaining.
(2) technical scheme
A kind of coal mine retrofilling of the present invention material mechanical performance method of testing and device, comprise coal mine retrofilling material mechanical performance method of testing and coal mine retrofilling material mechanical performance proving installation.
Coal mine retrofilling material mechanical performance proving installation is divided into two parts: upper fixture and lower clamp, and upper and lower fixture is identical, and position can exchange, and is staggered installation of and can be combined to form universal joint.Upper lower clamp is all comprised of interior lining panel and outer liner plate, and inside and outside liner plate is provided with four through holes, is bolted, and by adjusting bolt, can regulate the angle between inside and outside liner plate plane, and outer liner plate is provided with convex, and rotary connecting rod is housed on convex.
Coal mine retrofilling material mechanical performance method of testing is characterized in that: upper lower clamp is staggered installation of and is combined to form a universal joint, coal mine retrofilling material is prepared into sample according to charge ratio, the geometry of sample simulation coal mine retrofilling body of wall, sample is put in the middle of universal joint, connecting rod along upper and lower fixture applies an axial tension, and axial tension is converted to the pressure to compaction material sample by coal mine retrofilling material mechanical performance proving installation.By the coupling bolt of the inside and outside liner plate of alignment jig, can control the angle of cut between inside and outside liner plate, the pressure that makes to act on sample presents different directions, in order to simulate the acting force of various roof conditions to filled wall under coal mine; By testing distance between upper and lower fixture interior lining panel, and compare with initial distance, can obtain the deformation size of sample, after analog computation coal mine retrofilling body of wall is compressed under top board acting force, cause the settling amount of top board; By measurement, act on the pulling force on connecting rod, the compressive stress that analog computation filled wall is suffered; By calculating, load the time of acting force, can analog computation filled wall in compressive strength, the deformation in the different length of times.
(3) technique effect
A kind of coal mine retrofilling of the present invention material mechanical performance method of testing and device, be applicable to the Mechanics Performance Testing that coal mine gob strip-type filled wall and gob-side entry retaining protect lane filled wall.After Proportioning of filling materials is determined, in laboratory, can simulate the size and Orientation that filled wall is subject to top board acting force, the mechanical property of compaction material is tested.This proving installation compact conformation, simple to operate, be easy to safeguard, use reliable, method of testing is simply credible, protects aspect the Mechanics Performance Testing of lane filled wall have practicality widely at coal mine gob strip-type filled wall and gob-side entry retaining.
Accompanying drawing explanation
Accompanying drawing 1 is proving installation schematic three dimensional views of the present invention.
Accompanying drawing 2 is fixture schematic three dimensional views on proving installation of the present invention.
Accompanying drawing 3 is proving installation lower clamp schematic three dimensional views of the present invention.
Embodiment
Below in conjunction with accompanying drawing, one embodiment of the present of invention are described further, but the invention is not restricted to this embodiment.
(1) embodiment 1
Coal mine retrofilling material mechanical performance proving installation is divided into two parts: upper fixture and lower clamp, and upper and lower fixture is identical, and position can exchange, and is staggered installation of and can be combined to form universal joint.Upper lower clamp is all comprised of interior lining panel 4 and outer liner plate 2.Interior lining panel 4, outer liner plate 2 are provided with four through holes, by bolt 3, connect, and by adjusting bolt 3, can regulate the angle between interior lining panel 4, outer liner plate 2 planes, and outer liner plate is provided with convex, and rotary connecting rod 1 is housed on convex.
According to the proportioning of coal mine retrofilling material, prepare compaction material, according to the physical dimension of coal mine retrofilling body of wall design, equal proportion is prepared test sample, test sample is placed in the universal joint that coal mine retrofilling material mechanical performance proving installation forms, the coupling bolt 3 of lower clamp in adjusting, interior lining panel 4 planes of upper and lower fixture are kept at an angle, the relative position of different top slat element and filled wall under simulation coal mine.Connecting rod 1 by proving installation give one of coal mine retrofilling material mechanical performance proving installation act on pitman shaft to pulling force, pulling force is converted to the pressure to compaction material sample by proving installation.By testing distance between upper and lower fixture interior lining panel, and compare with initial distance, can obtain the deformation size of compaction material, after analog computation coal mine retrofilling material is compressed under top board acting force, cause the settling amount of top board; By measurement, act on the pulling force on connecting rod, the compressive stress that analog computation compaction material is suffered; By calculating, load the time of acting force, can analog computation compaction material in compressive strength, the deformation in the different length of times.By the mechanical property of test simulation coal mine gob strip-type filled wall and the gob-side entry retaining of compaction material sample mechanical property being protected to lane filled wall in experiment.

Claims (5)

1. coal mine retrofilling material mechanical performance method of testing and a device, is characterized in that: coal mine retrofilling material mechanical performance method of testing and coal mine retrofilling material mechanical performance proving installation.
2. coal mine retrofilling material mechanical performance proving installation according to claim 1, is characterized in that: described coal mine retrofilling material mechanical performance proving installation comprises two parts, upper fixture and lower clamp.
3. coal mine retrofilling material mechanical performance proving installation according to claim 2, is characterized in that: upper lower clamp is identical, and position can exchange, and is staggered installation of and can be combined to form universal joint.
4. coal mine retrofilling material mechanical performance proving installation according to claim 3, is characterized in that: upper lower clamp is all comprised of interior lining panel and outer liner plate; Inside and outside liner plate is provided with four through holes, is bolted, and by adjusting bolt, can regulate the angle between inside and outside liner plate plane, and outer liner plate is provided with convex, and rotary connecting rod is housed on convex.
5. coal mine retrofilling material mechanical performance method of testing according to claim 1, it is characterized in that: upper lower clamp is staggered installation of and is combined to form a universal joint, coal mine retrofilling material is prepared into sample according to charge ratio, the geometry of sample simulation coal mine retrofilling body of wall, sample is put in the middle of universal joint, connecting rod along upper and lower fixture applies an axial tension, and axial tension is converted to the pressure to compaction material sample by coal mine retrofilling material mechanical performance proving installation; By the coupling bolt of the inside and outside liner plate of alignment jig, can control the angle of cut between inside and outside liner plate, the pressure that makes to act on sample presents different directions, in order to simulate the acting force of various roof conditions to filled wall under coal mine; By testing the distance between upper and lower fixture interior lining panel, and compare with initial distance, can obtain the deformation size of sample, after analog computation coal mine retrofilling body of wall is compressed under top board acting force, cause the settling amount of top board; By measurement, act on the pulling force on connecting rod, the compressive stress that analog computation filled wall is suffered; By calculating, load the time of acting force, can analog computation filled wall in compressive strength, the deformation in the different length of times.
CN201410002903.3A 2014-01-04 2014-01-04 Method and device for testing mechanical performance of coal mine underground filling material Pending CN103712853A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410002903.3A CN103712853A (en) 2014-01-04 2014-01-04 Method and device for testing mechanical performance of coal mine underground filling material

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Application Number Priority Date Filing Date Title
CN201410002903.3A CN103712853A (en) 2014-01-04 2014-01-04 Method and device for testing mechanical performance of coal mine underground filling material

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104390861A (en) * 2014-11-24 2015-03-04 山东科技大学 Experimental device and testing method for testing stability of gob-side entry retaining
CN105865925A (en) * 2016-06-22 2016-08-17 广西大学 Device for utilizing real triaxial testing machine to realize rock biaxial tension test
CN109883838A (en) * 2019-03-28 2019-06-14 中国矿业大学 A kind of varied angle granular media filler experimental rig

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2444207Y (en) * 2000-11-08 2001-08-22 华硕电脑股份有限公司 Measuration instrument capable of adjusting measuring angle for pulling pressure force
CN201935801U (en) * 2010-07-29 2011-08-17 赛闻(天津)工业有限公司 Lock catch tensile strength testing assembly
CN102297234A (en) * 2011-07-25 2011-12-28 上海核工碟形弹簧制造有限公司 Tension and compression device of disc spring
CN102607980A (en) * 2012-03-14 2012-07-25 安徽省电力科学研究院 Tension-pressure conversion aid for calibration of tensile machine
CN203869942U (en) * 2014-01-04 2014-10-08 山东科技大学 Device for testing mechanical properties of underground filling materials of coal mines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2444207Y (en) * 2000-11-08 2001-08-22 华硕电脑股份有限公司 Measuration instrument capable of adjusting measuring angle for pulling pressure force
CN201935801U (en) * 2010-07-29 2011-08-17 赛闻(天津)工业有限公司 Lock catch tensile strength testing assembly
CN102297234A (en) * 2011-07-25 2011-12-28 上海核工碟形弹簧制造有限公司 Tension and compression device of disc spring
CN102607980A (en) * 2012-03-14 2012-07-25 安徽省电力科学研究院 Tension-pressure conversion aid for calibration of tensile machine
CN203869942U (en) * 2014-01-04 2014-10-08 山东科技大学 Device for testing mechanical properties of underground filling materials of coal mines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104390861A (en) * 2014-11-24 2015-03-04 山东科技大学 Experimental device and testing method for testing stability of gob-side entry retaining
CN105865925A (en) * 2016-06-22 2016-08-17 广西大学 Device for utilizing real triaxial testing machine to realize rock biaxial tension test
CN109883838A (en) * 2019-03-28 2019-06-14 中国矿业大学 A kind of varied angle granular media filler experimental rig

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Application publication date: 20140409

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