CN106644713B - Portable sensing device for three-dimensional physical similar material simulation experiment - Google Patents
Portable sensing device for three-dimensional physical similar material simulation experiment Download PDFInfo
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- CN106644713B CN106644713B CN201611039333.0A CN201611039333A CN106644713B CN 106644713 B CN106644713 B CN 106644713B CN 201611039333 A CN201611039333 A CN 201611039333A CN 106644713 B CN106644713 B CN 106644713B
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- 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
Abstract
The invention relates to a portable sensing device for a three-dimensional physical similar material simulation experiment, which comprises a wireless strain sensor, a composite tray, an adjusting nut, adjusting bolts and a base, wherein the composite tray comprises an upper tray and a lower tray, a plurality of wireless strain sensors are welded between the upper tray and the lower tray at equal intervals, four adjusting bolts are symmetrically welded at the bottom of the lower tray, four cuboid grooves are symmetrically formed in the upper surface of the base, a steel plate is welded in the middle of the opening of each cuboid groove, a tray fixing hole is formed in the middle of the steel plate, two fixing connecting holes are symmetrically formed in one side part of the base, an outer fixing pin hole is formed in each of the front side and the rear side of the base, two fixing connecting bolts are symmetrically formed in the other side part of the base, and an inner fixing pin hole is formed in the middle part of each fixing connecting bolt.
Description
Technical Field
The invention belongs to the field of physical similarity simulation experiments, and particularly relates to a portable sensing device for a three-dimensional physical similarity material simulation experiment.
Background
The simulation experiment of the physical similar material is one of the allowable experiments, and is one of the ways for people to discuss and know the rule of rock pressure. The method is mainly used for artificial materials with similar physical and mechanical properties of natural ores, an experimental model is made according to the actual mine prototype and a certain geometric similarity proportion, then a mining rock mass is excavated in the model, and the deformation, movement and damage characteristics of the model are observed.
The problem of mining of engineering rock mass is a space problem itself, and the model strain and the stress distribution problem of three-dimensional space among the mining process can not be well explained in traditional plane physics similar model experiment, therefore three-dimensional physics similar material simulation experiment technique has become the more accurate of this kind of problem of research, and the research means that the credibility is higher, but the excavation of three-dimensional model is a "black box" problem in fact, mining rock mass excavation process simulation difficulty, the controllability is poor, and the atress monitoring of mining rock mass itself is difficult.
In traditional coal seam exploitation physical similar material simulation experiment, the coal seam is laid by similar materials with a certain proportion as well as a top bottom plate, the similar materials are not movable, the simulation of the coal seam in steps and a sequential excavation process cannot be realized in the experiment process, particularly, the simulation is difficult to realize in a three-dimensional experiment, meanwhile, the stress monitoring of a coal (rock) body which is not mined in front of a working face is basically realized by a sensor which is pre-laid below the coal (rock) body, and due to the fact that the coal body is not a rigid body, breakage and attenuation can occur in the load transmission process, and the accuracy of the final measuring result of the sensor is reduced.
Disclosure of Invention
The invention aims to: the invention aims at solving the problems in the prior art, namely the invention discloses a portable sensing device for a three-dimensional physical similar material simulation experiment.
The technical scheme is as follows: a portable sensing device for a three-dimensional physical similar material simulation experiment comprises a wireless strain sensor, a composite tray, an adjusting nut, an adjusting bolt and a base,
the composite tray comprises an upper tray and a lower tray, a plurality of wireless strain sensors are welded between the upper tray and the lower tray at equal intervals, four adjusting bolts are symmetrically welded at the bottom of the lower tray and fixedly connected with adjusting nuts through threads,
four cuboid grooves are symmetrically arranged on the upper surface of the base, the positions of the cuboid grooves are matched with the positions of the adjusting bolts, a steel plate is welded in the middle of the opening of the cuboid groove, a tray fixing hole is arranged in the middle of the steel plate, the aperture of the tray fixing hole is matched with the diameter of the adjusting bolt,
two fixing connecting holes are symmetrically arranged at one side part of the base, an outer fixing pin hole is respectively arranged at one side of the front side and the rear side of the base close to the fixing connecting holes, the outer fixing pin holes are communicated with the fixing connecting holes,
the other side part of the base is symmetrically provided with two fixed connecting bolts, the middle parts of the fixed connecting bolts are provided with inner side fixed pin holes,
the positions of the fixed connecting bolts are matched with the positions of the fixed connecting holes, and the positions of the outer side fixing pin holes are matched with the positions of the inner side fixing pin holes.
Furthermore, four wireless strain sensors are welded between the upper tray and the lower tray at equal intervals.
Further, the aperture of the tray fixing hole is 5mm.
Furthermore, the aperture of the fixing and connecting hole is 10mm, and the depth is 30mm.
Further, the aperture of the outer fixing pin hole is 5mm.
Further, the diameter of the fixed connecting bolt is 9.8mm.
Further, the aperture of the inner side fixing pin hole is 5mm.
Has the advantages that: the invention discloses a portable sensing device for a three-dimensional physical similar material simulation experiment, which has the following beneficial effects:
1. the movable sensing module is adopted to replace similar materials to simulate the mined rock mass, so that the process simulation of the step-by-step and sequential mining process is realized;
2. the unification of sensing monitoring and simulation materials is realized, and the stress condition of the mined coal (rock) body can be monitored more directly and accurately;
3. the plurality of modules can be spliced in sections and are suitable for different advancing lengths; the module height is adjustable, is suitable for the experimental model of different geometric similarity ratio.
Drawings
FIG. 1 is a schematic perspective view of a portable sensing device for a three-dimensional physical similar material simulation experiment, according to the present disclosure;
FIG. 2 is a reference diagram of a portable sensing device for a three-dimensional physical simulation experiment, according to the present disclosure;
wherein:
1-wireless strain sensor 2-composite tray
3-adjusting nut 4-adjusting bolt
5-cuboid groove 6-fixed connecting hole
7-outer side fixing pin hole 8-fixing connecting bolt
9-inner side fixing pin hole 10-tray fixing hole
The specific implementation mode is as follows:
the following is a detailed description of specific embodiments of the invention.
As shown in figure 1, the portable sensing device for the three-dimensional physical similar material simulation experiment comprises a wireless strain sensor 1, a composite tray 2, an adjusting nut 3, an adjusting bolt 4 and a base,
the composite tray 2 comprises an upper tray and a lower tray, a plurality of wireless strain sensors 1 are welded between the upper tray and the lower tray at equal intervals, four adjusting bolts 4 are symmetrically welded at the bottom of the lower tray, the adjusting bolts 4 are fixedly connected with adjusting nuts 3 through threads,
four cuboid grooves 5 (five closed faces, one face is empty) are symmetrically arranged on the upper surface of the base, the positions of the cuboid grooves 5 are adapted to the positions of the adjusting bolts 4, a steel plate is welded in the middle of the opening of the cuboid groove 5, the middle of the steel plate is provided with a tray fixing hole 10, the aperture of the tray fixing hole 10 is matched with the diameter of the adjusting bolt 4,
two fixing connecting holes 6 are symmetrically arranged at one side part of the base, an outer fixing pin hole 7 is respectively arranged at one side of the front side and the rear side of the base close to the fixing connecting holes 6, the outer fixing pin holes 7 are communicated with the fixing connecting holes 6,
the other side part of the base is symmetrically provided with two fixed connecting bolts 8, the middle part of each fixed connecting bolt 8 is provided with an inner side fixed pin hole 9,
the position of the fixed connecting bolt 8 is matched with that of the fixed connecting hole 6, and the position of the outer side fixing pin hole 7 is matched with that of the inner side fixing pin hole 9.
Further, four wireless strain sensors 1 are welded between the upper tray and the lower tray at equal intervals.
Further, the diameter of the tray fixing hole 10 is 5mm.
Further, the hole diameter of the fixing connection hole 6 is 10mm, and the depth is 30mm.
Further, the hole diameter of the outer fixing pin hole 7 is 5mm.
Further, the diameter of the fixed connection bolt 8 is 9.8mm.
Further, the inner fixing pin hole 9 has a hole diameter of 5mm.
As shown in fig. 2, the arrows in fig. 2 indicate the splicing direction, and two or more portable sensing devices for simulation experiments using three-dimensional physically similar materials are spliced with each other to perform the simulation experiments.
The height adjusting method of the portable sensing device for the three-dimensional physical similar material simulation experiment comprises the following steps:
the thickness of the coal bed is as follows: the distance between base and the compound support top portion, the base height is unadjustable, and compound tray 2 highly adjusts through adjusting nut 3 and adjusting bolt 4 cooperation, and concrete operation method is as follows:
four adjusting bolts 4 that will descend the tray insert in the tray fixed orifices 10, screw up adjusting nut 3 along cuboid recess 5 and be fixed in the steel sheet at cuboid recess 5 top, continue to rotate adjusting nut 3 simultaneously in four cuboid recesses 5 and make the highly rising of compound tray 2 to preset position, realize the regulation to the sensing module height.
The embodiments of the present invention have been described in detail. However, the present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (1)
1. A portable sensing device for a three-dimensional physical similar material simulation experiment is characterized by comprising a wireless strain sensor, a composite tray, an adjusting nut, an adjusting bolt and a base,
the composite tray comprises an upper tray and a lower tray, a plurality of wireless strain sensors are welded between the upper tray and the lower tray at equal intervals, four adjusting bolts are symmetrically welded at the bottom of the lower tray and fixedly connected with adjusting nuts through threads,
four cuboid grooves are symmetrically arranged on the upper surface of the base, the positions of the cuboid grooves are matched with the positions of the adjusting bolts, a steel plate is welded in the middle of the opening of the cuboid groove, a tray fixing hole is arranged in the middle of the steel plate, the aperture of the tray fixing hole is matched with the diameter of the adjusting bolt,
two fixing connecting holes are symmetrically arranged at one side part of the base, an outer fixing pin hole is respectively arranged at one side of the front side and the rear side of the base close to the fixing connecting holes, the outer fixing pin holes are communicated with the fixing connecting holes,
the other side part of the base is symmetrically provided with two fixed connecting bolts, the middle parts of the fixed connecting bolts are provided with inner side fixed pin holes,
the position of the fixed connecting bolt is matched with that of the fixed connecting hole, and the position of the outer side fixing pin hole is matched with that of the inner side fixing pin hole;
four wireless strain sensors are welded between the upper tray and the lower tray at equal intervals;
the aperture of the tray fixing hole is 5mm;
the aperture of the fixed connecting hole is 10mm, and the depth of the fixed connecting hole is 30mm;
the aperture of the outer side fixing pin hole is 5mm;
the diameter of the fixed connecting bolt is 9.8mm;
the aperture of the inner side fixing pin hole is 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039333.0A CN106644713B (en) | 2016-11-21 | 2016-11-21 | Portable sensing device for three-dimensional physical similar material simulation experiment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039333.0A CN106644713B (en) | 2016-11-21 | 2016-11-21 | Portable sensing device for three-dimensional physical similar material simulation experiment |
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| CN106644713A CN106644713A (en) | 2017-05-10 |
| CN106644713B true CN106644713B (en) | 2023-02-24 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05312622A (en) * | 1992-05-06 | 1993-11-22 | Tokyo Electric Co Ltd | Load cell balance |
| DE102014107902A1 (en) * | 2013-06-19 | 2014-12-24 | Jinn Her Enterprise Co., Ltd. | Synchronously preload measuring screw with fiber Bragg grating devices |
| CN204255535U (en) * | 2014-12-15 | 2015-04-08 | 西安科技大学 | The simple and easy sensing device for measuring force of a kind of physical simulation experiment |
| CN105469686A (en) * | 2015-12-25 | 2016-04-06 | 西安科技大学 | Physical analog simulation test platform with variable angle and application method for same |
-
2016
- 2016-11-21 CN CN201611039333.0A patent/CN106644713B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05312622A (en) * | 1992-05-06 | 1993-11-22 | Tokyo Electric Co Ltd | Load cell balance |
| DE102014107902A1 (en) * | 2013-06-19 | 2014-12-24 | Jinn Her Enterprise Co., Ltd. | Synchronously preload measuring screw with fiber Bragg grating devices |
| CN204255535U (en) * | 2014-12-15 | 2015-04-08 | 西安科技大学 | The simple and easy sensing device for measuring force of a kind of physical simulation experiment |
| CN105469686A (en) * | 2015-12-25 | 2016-04-06 | 西安科技大学 | Physical analog simulation test platform with variable angle and application method for same |
Non-Patent Citations (1)
| Title |
|---|
| 围岩三维应力光栅监测方法及相似模拟实验研究;魏世明等;《采矿与安全工程学报》;20150115(第01期);全文 * |
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