CN110044695A - A kind of Tensile Strength of Rock test method - Google Patents
A kind of Tensile Strength of Rock test method Download PDFInfo
- Publication number
- CN110044695A CN110044695A CN201910182132.3A CN201910182132A CN110044695A CN 110044695 A CN110044695 A CN 110044695A CN 201910182132 A CN201910182132 A CN 201910182132A CN 110044695 A CN110044695 A CN 110044695A
- Authority
- CN
- China
- Prior art keywords
- sample
- heat
- folder
- wind
- tensile strength
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
-
- 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
- G01N2001/2873—Cutting or cleaving
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of air-heating type Tensile Strength of Rock experimental rig, it is characterized in that the device includes folder sample system and wind-heat system, folder sample system includes sample (1), folder sample tooth (2), tensile stress device, wind-heat system includes wind-heat case (3), heating wire (4), fan (5), presss from both sides sample tooth (2) totally 4, is symmetric, sample (1) is clamped by homogeneous angular, it totally 4, wind-heat case (3), is symmetric by homogeneous angular, for providing the heat of heating for sample (1).Instrument manufacturing is simple, and measurement accuracy is high, meets rock heat temperature and requires less than 100 DEG C, can test the uniaxial tensile strength of rock especially shale in a heated condition.
Description
Technical field
The present invention is a kind of geotechnical testament method, belongs to civil engineering, Geological Engineering instrument test field.
Background technique
Shale gas exploitation layer position is normally at the underground position 3000m, and about 70-90 DEG C of ground temperature.Shale anisotropy is stronger, adds
Work sample is more difficult, and shale easily detrition, and tensile strength is the important mechanical index of rock.So if can be compared with subject to
True tests out uniaxial tensile strength of the drilling core at 70-90 DEG C or so, most important to the mechanical property Quality Research of shale.
Summary of the invention
It is an object of the present invention to provide a kind of Tensile Strength of Rock test methods, anti-under warm-up mode for solving rock
Tensile strength test problem provides mechanics parameter for engineering practice.
Technical solution of the invention, it is characterized in that a kind of Tensile Strength of Rock test method, is tried using a kind of rock
Experiment device carries out tensile strength test, which includes folder sample system and wind-heat system, and folder sample system includes sample 1, folder sample tooth
2, tensile stress device, wind-heat system include wind-heat case 3, heating wire 4, fan 5.Sample tooth 2 totally 4, folder, is symmetric, by uniform
Angle clamps sample 1, and folder sample tooth 2 is connect with the tensile stress device of universal testing machine, is used for clamp assay sample.Wind-heat case 3 totally 4
It is a, it is symmetric by homogeneous angular, for providing the heat of heating for sample 1, heating wire 4 is connected to power supply, and provides heat, wind
Fan 5 connects to power supply, by drying the heat supply sample 1 of heating wire 4.There are symmetrical two prefabricated cracks 6 in the middle part of sample 1,
6 depth capacity of crack is set as 1-2mm.
Using the device, the test method for measuring Tensile Strength of Rock includes the following steps:
(1) core taken out from drilling well is cut into it is cylindric, it is spare as sample 1, two will be cut out in the middle part of sample 1 with cutting machine
The symmetrical crack 6 of item, 6 depth capacity of crack is between 1-2mm.
(2) by adjusting 4 folder sample teeth 2, so that sample 1 is by 2 held tight of folder sample tooth, 4 folder sample teeth 2 and universal test
The tensile stress device of machine connects.
(3) 4 wind-heat casees 3 are arranged in around sample 1 by homogeneous angular, with prefabricated crack 6 in the same horizontal position, are opened
Heater strip 4 is opened, sample 1 is carried out and heats.
(4) the tensile stress device for starting universal testing machine carries out vertical stretching by the stretching strain rate of test requirements document, synchronous
Stretching strain and tensile stress value are measured, after sample 1 destroys, the uniaxial tensile strength and failure strain value of sample 1 can be calculated.
The invention has the advantages that
This method is easy to operate, and measurement accuracy is high, meets rock heat temperature and requires less than 100 DEG C, can test rock and add
Uniaxial tensile strength under heat condition.
The scope of application of the present invention:
The uniaxial tensile strength of each rocks encountered suitable for civil engineering, Geological Engineering at a warm condition is tested and is needed
It asks, is particularly suitable for the tensile strength test of shale.
Detailed description of the invention:
Fig. 1 is a kind of elevational schematic view of experimental rig used in Tensile Strength of Rock test method.Wherein have: sample 1, folder sample tooth
2, wind-heat case 3, heating wire 4, fan 5, crack 6.
Fig. 2 is a kind of schematic top plan view of experimental rig used in Tensile Strength of Rock test method.Wherein have: sample 1, folder
Sample tooth 2, wind-heat case 3, heating wire 4, fan 5.
Specific embodiment:
Embodiment: the test method for measuring shale tensile strength is as follows,
1. the core taken out from drilling well is cut into it is cylindric, having a size of diameter 10cm, long 20cm, be used as sample 1, use cutting machine
Two symmetrical cracks 6 will be cut out in the middle part of sample 1,6 depth capacity of crack is 1.5mm.
2. by adjusting 4 folder sample teeth 2, so that sample 1 is by 2 held tight of folder sample tooth, 4 folder sample teeth 2 and universal test
The tensile stress device of machine connects.
3. 4 wind-heat casees 3 are arranged in around sample 1 by homogeneous angular, with prefabricated crack in the same horizontal position, distance
Sample 1 is 5cm, opens heater strip 4, carries out sample 1 and heats, heating 20 minutes or more.
4. starting the tensile stress device of universal testing machine, vertical stretching, synchro measure are carried out by stretching strain 1mm/min rate
Stretching strain and tensile stress value record and calculate out the uniaxial tensile strength and failure strain value of sample 1 after sample 1 destroys.
Claims (1)
1. a kind of Tensile Strength of Rock test method, it is characterized in that Tensile Strength of Rock test is carried out using a kind of experimental rig,
The device includes folder sample system and wind-heat system, and folder sample system includes sample (1), folder sample tooth (2), tensile stress device, wind-heat system
System includes wind-heat case (3), heating wire (4), fan (5), presss from both sides sample tooth (2) totally 4, is symmetric, and clamps and tries by homogeneous angular
Sample (1), folder sample tooth (2) is connect with the tensile stress device of universal testing machine, for clamp assay sample, totally 4, wind-heat case (3),
It is symmetric by homogeneous angular, for providing the heat of heating for sample (1), heating wire (4) is connected to power supply, heat is provided,
Fan (5) connects to power supply, and by blowing by the heat supply sample (1) of heating wire (4), sample (1) middle part has symmetrical two
Prefabricated crack (6), crack (6) depth capacity are set as 1-2mm,
Tensile Strength of Rock test method is measured using the device to include the following steps:
1. the core taken out from drilling well is cut into it is cylindric, it is spare as sample (1), will be cut in the middle part of sample (1) with cutting machine
Two symmetrical cracks (6) out, crack (6) depth capacity between 1-2mm,
2. by adjusting 4 folder sample teeth (2) so that sample (1) is by folder sample tooth (2) held tight, 4 folder sample teeth (2) with it is omnipotent
The tensile stress device of testing machine connects,
3. 4 wind-heat casees (3) are arranged in around sample (1) by homogeneous angular, with prefabricated crack (6) in the same horizontal position,
It opens heater strip (4), carries out sample (1) heating,
4. starting the tensile stress device of universal testing machine, vertical stretching, synchro measure are carried out by the stretching strain rate of test requirements document
Stretching strain and tensile stress value can calculate the uniaxial tensile strength and failure strain value of sample (1) after sample (1) is destroyed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910182132.3A CN110044695A (en) | 2019-03-11 | 2019-03-11 | A kind of Tensile Strength of Rock test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910182132.3A CN110044695A (en) | 2019-03-11 | 2019-03-11 | A kind of Tensile Strength of Rock test method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110044695A true CN110044695A (en) | 2019-07-23 |
Family
ID=67273679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910182132.3A Pending CN110044695A (en) | 2019-03-11 | 2019-03-11 | A kind of Tensile Strength of Rock test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110044695A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345355A (en) * | 2020-11-02 | 2021-02-09 | 西南石油大学 | Cement stone tensile strength testing device and method |
| CN113188906A (en) * | 2021-04-25 | 2021-07-30 | 重庆科技学院 | Rock uniaxial tension test device and method |
| CN114184477A (en) * | 2022-02-16 | 2022-03-15 | 中国矿业大学(北京) | Real-time wind-temperature rock uniaxial compression experimental device, system and method |
-
2019
- 2019-03-11 CN CN201910182132.3A patent/CN110044695A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345355A (en) * | 2020-11-02 | 2021-02-09 | 西南石油大学 | Cement stone tensile strength testing device and method |
| CN113188906A (en) * | 2021-04-25 | 2021-07-30 | 重庆科技学院 | Rock uniaxial tension test device and method |
| CN113188906B (en) * | 2021-04-25 | 2022-05-20 | 重庆科技学院 | Rock uniaxial tension test device and method |
| CN114184477A (en) * | 2022-02-16 | 2022-03-15 | 中国矿业大学(北京) | Real-time wind-temperature rock uniaxial compression experimental device, system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110044695A (en) | A kind of Tensile Strength of Rock test method | |
| Kuruppu et al. | ISRM-suggested method for determining the mode I static fracture toughness using semi-circular bend specimen | |
| Chau et al. | Uniaxial compressive strength and point load strength of rocks | |
| Selvadurai | Normal stress‐induced permeability hysteresis of a fracture in a granite cylinder | |
| Jin et al. | Breakdown pressure determination-a fracture mechanics approach | |
| Wang et al. | Natural and hydraulic fracture interaction study based on semi-circular bending experiments | |
| CN107389468A (en) | The lower building structural materials testing experiment method of Thermal-mechanical Coupling effect | |
| CN106021886B (en) | A kind of method of asphalt strength model under determining complex stress condition | |
| Pagoulatos | Evaluation of multistage triaxial testing on Berea sandstone | |
| Lin et al. | Determination of strength and deformation properties of columnar jointed rock mass using physical model tests | |
| Roshan et al. | New generation of hoek cells | |
| Tian et al. | Relaxation behavior of argillaceous sandstone under high confining pressure | |
| CN111366464A (en) | Method for determining mechanical parameters of fractured formation rock | |
| CA1291263C (en) | Modified ring test | |
| CN116907995B (en) | Test system and test method for detecting multi-field coupling mechanical properties of mixed rock | |
| CN110044694A (en) | A kind of air-heating type Tensile Strength of Rock experimental rig | |
| Tyson et al. | Elastic compliance of single-edge-notched tension SE (T)(or SENT) specimens | |
| CN114753834A (en) | Method for measuring horizontal ground stress of well wall anisotropy | |
| CN109781509B (en) | Ground stress measuring device and method considering temperature effect | |
| CN207019642U (en) | A kind of new displacement tester | |
| Mubarak et al. | Quantification of plasticity and damage in berea sandstone through monotonic and cyclic triaxial loading under high-confinement pressures | |
| Rodklang et al. | Effects of temperatures on strength and deformability of Tak granite | |
| Corthésy et al. | Stress measurements in soft rocks | |
| Frash et al. | Development of a new temperature controlled true-triaxial apparatus for simulating enhanced geothermal systems (EGS) at the laboratory scale | |
| Iftikhar et al. | The effect of temperature on the mechanical behavior of Berea sandstone under confining pressure: experiments |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190723 |
|
| WD01 | Invention patent application deemed withdrawn after publication |