CN203688351U - Rock lateral-confinement compression-resistance test sample clamp - Google Patents
Rock lateral-confinement compression-resistance test sample clamp Download PDFInfo
- Publication number
- CN203688351U CN203688351U CN201320879463.0U CN201320879463U CN203688351U CN 203688351 U CN203688351 U CN 203688351U CN 201320879463 U CN201320879463 U CN 201320879463U CN 203688351 U CN203688351 U CN 203688351U
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- rock
- baffles
- base
- test sample
- compression
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Abstract
The utility model discloses a rock lateral-confinement compression-resistance test sample clamp. The test sample clamp comprises a base, baffles and a pressing block, wherein four baffles with same size are arranged above the base; reinforcing plates and bolt through holes are formed in the baffles; the baffles are fixedly connected with the base through bolts, thus realizing sample confined compression condition; a rectangular pressing block is arranged above a rectangular space which is formed by encircling of the baffles; test samples are arranged in the rectangular space and are pressed. By changing the distribution manner of the baffles on the base in a loading process, different lateral confinement conditions of the rock can be realized, so that the breakage condition in engineering coal rock can be judged. The rock lateral confinement compression-resistance test sample clamp plays a great significant role of guiding buildings and controlling the stability of the rock and is simple in structure, easy to operate, small in size, low in cost and excellent in test effect.
Description
Technical field
The utility model relates to a kind of specimen holder and experimental technique, especially a kind of specimen holder and experimental technique that is applicable to compressive strength experiment under rock side limit condition.
Background technology
Underground works rock mass is generally in three-dimensional stress state; Such as narrow coal column under dam, tunnel, tunnel, coal mine etc., often there is asymmetric stress state in the border of these rock mass.Grasp the mechanical characteristic of rock under different stress, stability control for buildings and rock mass has great importance, establish and need to excavate respectively and support work in both sides at different times as staying of the narrow coal column of gob-side entry driving under coal mine, grasp different times coal column mechanical characteristic, can be for roadway support work provides reliable basis, this just need to carry out in laboratory Rock Under Uniaxial Compression resistance to compression experiment.Compressive strength of rock experiment under Simple stress condition is that single shaft is limit without side; The experiment of compressive strength of rock under triaxial stress state is generally to apply constant pressure in side, not fixed displacement, and be on the both direction of side simultaneously, exert pressure in couples, system complex, experimental cost are high.
Utility model content
Technical matters: the purpose of this utility model is the weak point overcoming in prior art, provide a kind of simple in structure, easy to operate, be applicable to rock confined compressive strength experimental sample fixture and experimental technique.
Technical scheme: rock side limit resistance to compression experimental sample fixture of the present utility model, comprise base, base is provided with four measure-alike baffle plates that surround coffin, the coffin top that baffle plate surrounds is provided with the rectangular parallelepiped briquetting of extrusion experiment sample, on baffle plate, be equipped with stiffening plate, the bottom of baffle plate is equipped with bolt hole, and described base is provided with corresponding with the bolt hole of four baffle plates respectively ladder bolt hole, is provided with the set bolt through bolt hole in ladder bolt hole.
Beneficial effect: owing to having adopted technique scheme, the utility model can carry out simulated experiment to sample, easy and simple to handle; Can be fixed on by baffle plate in change loading procedure the arrangement form of base, realize the different side limit forms such as rock sample one side side limit, two sides side limit, diverse in function; By recording compressive strength and the engineering rock mass analogy of rock sample under homonymy limit condition not, judge the destruction situation in underground works coal and rock with this, to instructing the stability control of buildings and rock mass significant; This specimen holder is simple in structure, processing ease, and small volume, cost is lower, and experiment effect is good, has in the art practicality widely.
accompanying drawing explanation:
Fig. 1 is front view of the present utility model.
Fig. 2 is side view of the present utility model.
Fig. 3 is baffle plate front elevation of the present utility model.
Fig. 4 is base front elevation of the present utility model.
Fig. 5 is briquetting vertical view of the present utility model.
In figure: 1-base, 2-baffle plate, 3-briquetting, 4-stiffening plate, 5-bolt hole, 6-ladder bolt hole.
Embodiment
Below in conjunction with accompanying drawing, an embodiment of the present utility model is described further:
Rock side limit resistance to compression experimental sample fixture of the present utility model, is mainly made up of base 1, baffle plate 2, briquetting 3; Baffle plate 2 is four measure-alike baffle plates, is located on base 1, surrounds the coffin mould that can place experimental sample, and baffle plate 2 is connected by bolt and base 1, realizes the side limit condition of sample; The coffin top that baffle plate 2 surrounds is provided with the rectangular parallelepiped briquetting 3 of extrusion experiment sample, on baffle plate 2, be equipped with stiffening plate 4, the bottom of baffle plate 2 is equipped with bolt hole 5, described base 1 is provided with corresponding with the bolt hole 5 of four baffle plates 2 respectively ladder bolt hole 6, is provided with the set bolt through bolt hole 5 in ladder bolt hole 6.
The course of work: first prefabricated two regular cube rock samples, specification is consistent with the coffin that baffle plate 2 surrounds, and a prefabricated rock sample is wherein placed in to described base 1 central authorities; Four described baffle plates 2 are close to respectively and are placed on rock sample four sides all around, be connected with bolt and base 1; Briquetting 3 is placed in directly over rock sample; , stop continuing to load when reaching setting load, and keep setting load the briquetting 3 slow imposed loads in top by material experiment-machine; Remove after a baffle plate in four baffle plates 2, continue Slow loading; After rock sample destroys, stop loading, record the load that now rock sample destroys; Observe and record rock mass damage form, the compressive strength that computing rock sample is prescribed a time limit three sides, and carry out analogy with underground works rock mass geology information parameter, judge the coal mine roadway excavation destruction situation of country rock afterwards in underground works coal and rock with this;
The rock sample of destroyed in fixture is taken out, another prefabricated piece regular cube rock sample is placed in to described base 1 central authorities; Four described baffle plates 2 are close to respectively and are placed on rock sample four sides all around, and be connected with base 1; Briquetting 3 is placed in directly over rock sample; , stop continuing to load when reaching setting load, and keep setting load the briquetting 3 slow imposed loads in top by material experiment-machine; Remove after two baffle plates relative in four baffle plates 2, continue Slow loading, until rock sample destroys; Observe and record rock mass damage form, and record failing load by material experiment-machine, the compressive strength that computing rock sample is prescribed a time limit in two sides side, and carry out analogy with underground works rock mass geology information parameter, judges the destruction situation of the narrow coal column of gob-side entry driving in underground works coal and rock with this.
Claims (1)
1. a rock side limit resistance to compression experimental sample fixture, it is characterized in that: it comprises base (1), base (1) is provided with four the measure-alike baffle plates (2) that surround coffin, the coffin top that baffle plate (2) surrounds is provided with the rectangular parallelepiped briquetting (3) of extrusion experiment sample, on baffle plate (2), be equipped with stiffening plate (4), the bottom of baffle plate (2) is equipped with bolt hole (5), described base (1) is provided with corresponding with the bolt hole (5) of four baffle plates (2) respectively ladder bolt hole (6), ladder bolt hole is provided with the set bolt through bolt hole (5) in (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320879463.0U CN203688351U (en) | 2013-12-30 | 2013-12-30 | Rock lateral-confinement compression-resistance test sample clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320879463.0U CN203688351U (en) | 2013-12-30 | 2013-12-30 | Rock lateral-confinement compression-resistance test sample clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203688351U true CN203688351U (en) | 2014-07-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320879463.0U Expired - Fee Related CN203688351U (en) | 2013-12-30 | 2013-12-30 | Rock lateral-confinement compression-resistance test sample clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203688351U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712852A (en) * | 2013-12-30 | 2014-04-09 | 中国矿业大学 | Rock lateral confinement compression resistance experiment sample clamp and experiment method |
-
2013
- 2013-12-30 CN CN201320879463.0U patent/CN203688351U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712852A (en) * | 2013-12-30 | 2014-04-09 | 中国矿业大学 | Rock lateral confinement compression resistance experiment sample clamp and experiment method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20141230 |
|
| EXPY | Termination of patent right or utility model |