CN103994899B - A kind of on-the-spot coring device for rock true triaxial test and method - Google Patents
A kind of on-the-spot coring device for rock true triaxial test and method Download PDFInfo
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- CN103994899B CN103994899B CN201410209887.5A CN201410209887A CN103994899B CN 103994899 B CN103994899 B CN 103994899B CN 201410209887 A CN201410209887 A CN 201410209887A CN 103994899 B CN103994899 B CN 103994899B
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Abstract
The present invention relates to a kind of on-the-spot coring device for rock true triaxial test and method, comprise fixed frame, cutting barrel, coring tube, power system and chain-type diced system, power system is arranged on fixed frame, chain-type diced system is arranged on coring tube, fixed frame bottom is arranged on coring tube after being connected with cutting barrel, power is passed to chain-type diced system by power system, realizes the cutting of chain-type diced system to rock.This apparatus structure is simple, and convenient disassembly, is easy to obtain core in the wild, has high promotional value.
Description
Technical field
The present invention relates to rock apparatus field, be specifically related to a kind of on-the-spot coring device for rock true triaxial test and method.
Background technology
True triaxial test is the triaxial compression test under making rock sample be in the combined stree state of three principle stresses unequal (i.e. σ 1> σ 2> σ 3).True triaxial test can study the impact of intermediate principal stress (σ 2) on rock deformation and strength characteristics.
For constructing tunnel, under large ground pressure, underground engineering wall rock is in three-dimensional stress constraint before excavation, wherein the principle stress in certain 1 ~ 2 direction is very high, after excavation, country rock changes two-dimensional state of stress into by three-dimensional stress constraint, when rock matter is more crisp, likely energy-producingly sharply to discharge, destruction is launched in country rock generation splitting, the rock burst that Here it is it has often been said.In addition, the excavation of periphery cavern, likely cause the aggravation of having excavated surrounding rock of chamber stress and having concentrated, cause excavating surrounding rock of chamber after excavation a period of time, energy release rate sharply increases and rock burst occurs, and causes great economic asset loss, therefore, abundant understanding rock true triaxial mechanical characteristic, for guarantee safety for tunnel engineering, reduces the construction line-putting and has important Research Significance.
At present, the experimental study for true triaxial is still immature, and core and difficulty thereof are got in square test specimen scene, and traditional coring device is too heavy, and get core and spend higher, sampling operation is loaded down with trivial details, is difficult to the request for utilization meeting true triaxial test.
Summary of the invention
The object of the invention is to design a kind of on-the-spot coring device for rock true triaxial test, this device convenient disassembly, is easy to carry about with one, gets core simple to operate easy to learn, be particularly suitable for field sampling, greatly improves and gets core success ratio and operating efficiency.
The present invention adopts following technical proposals:
A kind of on-the-spot coring device for rock true triaxial test, comprise fixed frame, cutting barrel, coring tube, power system and chain-type diced system, power system is arranged on fixed frame, chain-type diced system is arranged on coring tube, fixed frame bottom is arranged on coring tube after being connected with cutting barrel, power is passed to chain-type diced system by power system, realizes the cutting of chain-type diced system to rock.
Preferably, described power system comprises the engine being arranged at fixed frame top, and engine shaft is connected with carousel gear, and carousel gear engages with the orthogonal gear at the middle part being arranged at fixed frame, and carousel gear is also fixedly connected with active chain pitch wheel.
Preferably, described orthogonal gear is four groups, and the power-conversion that horizontally rotates of carousel gear is vertical rotational component by orthogonal gear.
Preferably, described four groups of orthogonal gear drive by carousel gear, and the rotating speed achieving four groups of orthogonal gear is consistent.
Preferably, described chain-type diced system comprises chain and is arranged at the driven chain pitch wheel of coring tube bottom, and chain is meshed with active chain pitch wheel and driven chain pitch wheel respectively.
Preferably, described chain-type diced system also comprises the equipment gear be arranged in the middle part of coring tube, and equipment gear engages with chain.
Preferably, described fixed frame is connected with cutting barrel by cutterhead set bolt, and described cutting barrel is four groups.
Preferably, described chain is sawtooth chain.
Preferably, described coring tube is square.
Utilize a sampling method for the on-the-spot coring device being used for rock true triaxial test, step is as follows:
(1) engine being fixed on framework upper, orthogonal gear is arranged in the middle part of fixed frame, and guarantee carousel gear and orthogonal gear good engagement, then four groups of cutting barrels are fixed on fixed frame bottom, debugging this device to running well;
(2) this device is positioned over rock surface to be got, after determining sample position, connect generator power supply, hand-held fixed frame presses down, and carries out rock sample on-site cutting;
(3) when coring tube four groups cutting barrel runs through sillar completely, close generator power supply, unclamp the cutterhead set bolt of cutting barrel, fixed frame is separated with cutting barrel, four groups of cutting barrels are unloaded, carefully deposits true triaxial rock sample;
(4) repeat aforesaid operations, core is got at the scene of carrying out other sillars.
The invention has the beneficial effects as follows:
(1) this apparatus structure is simple, and convenient disassembly, is easy to obtain square core at the scene.
It is vertical rotary component that (2) four groups of orthogonal gear will horizontally rotate power-conversion, drives four groups of chain syn-chro-step to rotate, and then achieves and cut the four sides of rock.Four groups of chain syn-chro-step cut rock, and cutting speed is consistent, have higher cutting speed.
(3) thickness of chain is less than the thickness of existing cutterhead, reduces Cutting Drag, improves cutting speed.
Accompanying drawing illustrates:
Fig. 1 is structural drawing of the present invention;
Fig. 2 is exploded view of the present invention;
Fig. 3 is transmission schematic diagram of the present invention;
Wherein: 1, fixed frame, 2, engine, 3, carousel gear, 4, orthogonal gear rotating shaft, 5, cutterhead set bolt, 6, initiatively chain pitch wheel, 7, orthogonal gear, 8, chain, 9, equipment gear, 10, cutting barrel, 11, driven chain pitch wheel, 12, coring tube.
Embodiment:
Embodiment 1: a kind of on-the-spot coring device for rock true triaxial test, its structure is as Figure 1-3: comprise fixed frame 1, cutting barrel 10, coring tube 12, power system and chain-type diced system, power system is arranged on fixed frame 1, chain-type diced system is arranged on coring tube 12, fixed frame 1 bottom is arranged on coring tube 12 after being connected with cutting barrel 10, power is passed to chain-type diced system by power system, realizes the cutting of chain-type diced system to rock.
Described power system comprises the engine 2 being arranged at fixed frame 1 top, and engine shaft is connected with carousel gear 3, carousel gear 3 be positioned in orthogonal gear rotating shaft 4 orthogonal gear 7 engage, orthogonal gear rotating shaft 4 is positioned in the middle part of fixed frame 1; Carousel gear 3 is also fixedly connected with active chain pitch wheel 6.
Described orthogonal gear 7 is four groups, and the power-conversion that horizontally rotates of carousel gear 3 is vertical rotational component by orthogonal gear 7.
Described four groups of orthogonal gear 7 drive by carousel gear 3, and the rotating speed achieving four groups of orthogonal gear 7 is consistent.
Described chain-type diced system comprises chain 8 and is arranged at the driven chain pitch wheel 11 of coring tube 12 bottom, and chain 8 is meshed with active chain pitch wheel 6 and driven chain pitch wheel 11 respectively.
Described chain-type diced system also comprises the equipment gear 9 be arranged in the middle part of coring tube, and equipment gear 9 engages with chain 8, and the extraneous factors such as reduction is rocked, vibrations, on the impact of chain scroll-diced, strengthen stability.
Described fixed frame 1 is connected with cutting barrel 10 by cutterhead set bolt 5; Described cutting barrel 10 is four groups.
Described chain 8 is sawtooth chain.
Described coring tube 12 is square.
Utilize a sampling method for the on-the-spot coring device being used for rock true triaxial test, step is as follows:
(1) engine 2 is fixed on framework upper, orthogonal gear 7 is arranged in the orthogonal gear rotating shaft 4 of fixed frame, and guarantee carousel gear 3 and orthogonal gear 7 good engagement, then four groups of cutting barrels are arranged on fixed frame 1 bottom, debug this device to running well;
(2) this device is positioned over rock surface to be got, after determining sample position, connect the power supply of generator 2, hand-held fixed frame 1 presses down, and carries out rock sample on-site cutting;
(3) when coring tube four groups cutting barrel runs through sillar completely, close generator power supply, unclamp the cutterhead set bolt 5 of cutting barrel 10, fixed frame 1 is separated with cutting barrel 10, four groups of cutting barrels are unloaded, carefully deposits true triaxial rock sample;
(4) repeat aforesaid operations, core is got at the scene of carrying out other sillars.
Principle of work of the present invention is:
Motor 2 drives carousel gear 3 to rotate, carousel gear 3 is meshed with orthogonal gear 7, drives orthogonal gear 7 to rotate, and orthogonal gear 7 is fixedly connected with active chain pitch wheel 6, initiatively chain pitch wheel 6 drives chain 8 to rotate, and chain 8 drives equipment gear 9 and driven chain pitch wheel 11 to rotate.
Chain 8 is sawtooth chain, conveniently cuts rock.
This apparatus structure is simple, and convenient disassembly, is easy to obtain square core at the scene.
The power-conversion that horizontally rotates of carousel gear 3 is vertical rotary component by four groups of orthogonal gear 7, drives four groups of chain 8 synchronous axial system, and then achieves and cut the four sides of rock.Four groups of chains 8 synchronously cut rock, and cutting speed is consistent, can ensure the integrality of square core.
The thickness of chain 8 is less than the thickness of existing cutterhead, reduces Cutting Drag, improves cutting speed.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (9)
1. the on-the-spot coring device for rock true triaxial test, it is characterized in that: comprise fixed frame, cutting barrel, coring tube, power system and chain-type diced system, power system is arranged on fixed frame, chain-type diced system is arranged on coring tube, fixed frame bottom is arranged on coring tube after being connected with cutting barrel, power is passed to chain-type diced system by power system, realizes the cutting of chain-type diced system to rock;
Described fixed frame is connected with cutting barrel by cutterhead set bolt; Described cutting barrel is four groups.
2. the on-the-spot coring device for rock true triaxial test according to claim 1, it is characterized in that: described power system comprises the engine being arranged at fixed frame top, engine shaft is connected with carousel gear, carousel gear engages with the orthogonal gear at the middle part being arranged at fixed frame, and carousel gear is also fixedly connected with active chain pitch wheel.
3. the on-the-spot coring device for rock true triaxial test according to claim 2, is characterized in that: described orthogonal gear is four groups, and the power-conversion that horizontally rotates of carousel gear is vertical rotational component by orthogonal gear.
4. the on-the-spot coring device for rock true triaxial test according to claim 3, is characterized in that: described four groups of orthogonal gear drive by carousel gear, and the rotating speed achieving four groups of orthogonal gear is consistent.
5. the on-the-spot coring device for rock true triaxial test according to claim 1, it is characterized in that: described chain-type diced system comprises chain and is arranged at the driven chain pitch wheel of coring tube bottom, and chain is meshed with active chain pitch wheel and driven chain pitch wheel respectively.
6. the on-the-spot coring device for rock true triaxial test according to claim 5, is characterized in that: described chain-type diced system also comprises the equipment gear be arranged in the middle part of coring tube, and equipment gear engages with chain.
7. the on-the-spot coring device for rock true triaxial test according to claim 5, is characterized in that: described chain is sawtooth chain.
8. the on-the-spot coring device for rock true triaxial test according to claim 1, is characterized in that: described coring tube is square.
9. utilize a sampling method for the on-the-spot coring device for rock true triaxial test described in any one of claim 2-4, step is as follows:
(1) engine being fixed on framework upper, orthogonal gear is arranged in the middle part of fixed frame, and guarantee carousel gear and orthogonal gear good engagement, then four groups of cutting barrels are fixed on fixed frame bottom, debugging this device to running well;
(2) this device is positioned over rock surface to be got, after determining sample position, connect generator power supply, hand-held fixed frame presses down, and carries out rock sample on-site cutting;
(3) when coring tube four groups cutting barrel runs through sillar completely, close generator power supply, unclamp the cutterhead set bolt of cutting barrel, fixed frame is separated with cutting barrel, four groups of cutting barrels are unloaded, carefully deposits true triaxial rock sample;
(4) repeat aforesaid operations, core is got at the scene of carrying out other sillars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410209887.5A CN103994899B (en) | 2014-05-16 | 2014-05-16 | A kind of on-the-spot coring device for rock true triaxial test and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410209887.5A CN103994899B (en) | 2014-05-16 | 2014-05-16 | A kind of on-the-spot coring device for rock true triaxial test and method |
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| Publication Number | Publication Date |
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| CN103994899A CN103994899A (en) | 2014-08-20 |
| CN103994899B true CN103994899B (en) | 2016-03-02 |
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| CN201410209887.5A Expired - Fee Related CN103994899B (en) | 2014-05-16 | 2014-05-16 | A kind of on-the-spot coring device for rock true triaxial test and method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11448576B2 (en) | 2016-07-06 | 2022-09-20 | Shandong University | Multifunctional true triaxial rock drilling test system and method |
| CN106198934B (en) * | 2016-09-14 | 2018-01-19 | 山东大学 | The experimental rig and test method of a kind of crack rock landslide chip off-falling and crack gushing water |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5189939A (en) * | 1991-12-23 | 1993-03-02 | Carbonic Reserves, Inc. | Apparatus for cutting blocks of ice |
| DE19548677A1 (en) * | 1995-12-18 | 1997-06-19 | Mannesmann Ag | Procedure for machine cutting to lengths of long workpieces |
| US7216555B2 (en) * | 2004-02-11 | 2007-05-15 | Veris Technologies, Inc. | System and method for mobile soil sampling |
| CN102445362B (en) * | 2011-09-28 | 2013-07-24 | 中国水电顾问集团华东勘测设计研究院 | Method for sampling jointed rock mass |
| DE102012010978A1 (en) * | 2012-05-31 | 2013-12-05 | Andreas Stihl Ag & Co. Kg | "Cutting chain for cutting mineral or metallic materials" |
| CN202853928U (en) * | 2012-10-27 | 2013-04-03 | 薛海 | Device for making mine experimental rock sample |
| CN203881559U (en) * | 2014-05-16 | 2014-10-15 | 山东大学 | On-site coring device for true triaxial test of rocks |
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