CN106989967A - The preparation method of soft rock slaking test sample under wet dry alternating and stress collective effect - Google Patents
The preparation method of soft rock slaking test sample under wet dry alternating and stress collective effect Download PDFInfo
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- CN106989967A CN106989967A CN201710178849.1A CN201710178849A CN106989967A CN 106989967 A CN106989967 A CN 106989967A CN 201710178849 A CN201710178849 A CN 201710178849A CN 106989967 A CN106989967 A CN 106989967A
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- 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
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- 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
- G01N1/36—Embedding or analogous mounting of samples
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- 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
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/366—Moulds; Demoulding
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Abstract
The present invention relates to the preparation method of soft rock slaking test sample under wet dry alternating and stress collective effect.Sample preparation step includes：（1）Determine the size of test sample；（2）Make square dies；（3）Original rock sample pretreatment；（4）Make cement mortar；（5）Rock is wrapped up with cement mortar in mould, cuboid slaking test sample is made；（6）Sample is conserved 28 days, removes mould；（7）Slaking test sample is post-processed；（8）Preparation before slaking test.When slaking test sample makes under carrying out wet dry alternating and stress collective effect, soft rock can not be processed into the regular sample of cuboid of rule and sample preparation success rate is low by traditional rock cutting method because soft rock quality is softer.For the problem, the regular cuboid needed for experiment original sample can be made in the method applied in the present invention, and carries out sample preparation using method of the present invention, and process is simple, cost is low, success rate is high.The sample obtained using this method can be used for simulating the soft rock slaking test under wet dry alternating and stress collective effect.
Description
Technical field
Soft rock slaking test sample under field, specially wet dry alternating and stress collective effect is disintegrated the present invention relates to soft rock
Preparation method.
Background technology
The differential swelling of rock in water level-water area curve, is the important evidence for evaluating Water-related Project rock stability, generally may be used
Analog study, and the conjunction of the preparation method of slaking test rock sample are carried out to its disintegrating procedue by rock indoor slaking test
The reasonability of rationality, the especially preparation method of soft rock slaking test rock sample, will directly affect the reliability of result of the test.
The preparation of traditional disaggregation sample, is generally fabricated to cuboid sample, but soft rock using the method for cutting by rock sample
Quality is softer, during using traditional cutting method processing sample, and the vibrations produced by cutting inevitably cause soft rock surface
Or Local Cracking comes off, cause the specimen surface being made uneven, it is impossible to guarantee test（There is stress state）During sample by
Power is uniform；Moreover, the cooling cutting blade that added water during cutting can cause soft rock to soften, easily rock sample is caused to be broken after soft rock softening,
Directly result in sample preparation success rate low.Therefore, the method for tradition cutting sample preparation can not be under wet dry alternating and stress collective effect
Soft rock slaking test makes sample.
The content of the invention
To solve conventional cutting method, it is impossible to which the cuboid sample and sample preparation success rate that soft rock is processed into rule are low, and
Bring the problem of can not carrying out slaking test under wet dry alternating and stress collective effect.The present invention provides a kind of wet dry alternating and should
The preparation method of soft rock slaking test sample under power collective effect, not only sample preparation success rate is high for the preparation method, it is small to disturb, and
Be made specimen shape rule, surface it is uniform；Both during can be with guarantee test, sample surrounding side institute stress be uniform, also may be used
The wet dry alternating state of band is changed with mimic water-depth.
The technical scheme that the present invention takes is：
The preparation method of soft rock slaking test sample, comprises the following steps under wet dry alternating and stress collective effect：
Step 1：According to slaking test requirement, experimental rig feature, the specific size of slaking test sample is determined；
Step 2：According to the size of sample, mould inside size is determined, mould can be dismantled flexibly；
Step 3：Choose the original sample of research institute, it is desirable to which the size of original sample is less than mould inside size, uses preservative film
Wrap up original sample；
Step 4：Make cement mortar；
Step 5：Make slaking test sample.
Step 6：Slaking test sample is put into fog room and conserved, the mould outside disintegration sample is removed；
Step 7：Slaking test sample is wrapped up with preservative film, disintegration sample is made, sample is preserved；
Step 8：The preservative film on the original sample in disintegration sample is cut off, makes original sample naturally exposed；
By above-mentioned steps, the preparation of soft rock slaking test sample is completed.
The step includes, and first applies one layer of mineral oil in mould inner surface, then toward filling a certain amount of cement bonded sand in mould
Slurry, the original sample that then preservative film is wrapped up is put into mould, and the upper surface of flicking original sample moves down original sample,
Until the upper surface of original sample and die top are flushed, then toward adding cement mortar in mould, until mould inside is filled up, this
When, the upper surface of original sample is not just covered by cement mortar, finally, gently vibrating mould outer wall, by cement mortar
Minute bubbles are discharged, tentatively obtained slaking test sample.
The cement mortar is mould inside volume half or so.Through test of many times, cement mortar is mould inside volume
Half or so is to ensure that the disintegration sample that is made forms smooth cuboid, it is to avoid appearance is due to being first put into original sample, again
Add cement mortar or be first put into cement mortar much smaller than mould inside volume half or so, place into sample, cause sample
The cement mortar filling of bottom and side is uneven and the situation in space occurs.
In the step, irregular original sample is filled up into the side of rule by cement mortar in square template framework
Shape sample；When irregular original sample being filled up into cuboid sample with cement mortar, it is desirable to the upper surface of original sample and mould
Tool top is flushed.
The preparation method of soft rock slaking test sample, beneficial effect under the present invention a kind of wet dry alternating and stress collective effect
It is as follows：
1：In step 3, it is with the purpose of preservative film parcel original sample：Prevent cement mortar from filling original sample space and changing
Become the intensity of original original sample, so as to bring influence to disintegration experimental result and cause error.
2：In steps of 5, when irregular original rock sample being filled up into cuboid sample with cement mortar, it is desirable to rock sample it is upper
Surface and die top are flushed, and the purpose is to the cuboid sample that the slaking test sample for ensureing to be made is regular shape, its end
Face is smooth, can guarantee that in stress state process of the test, sample uniform force.
3：In step 7, the purpose for being disintegrated sample is wrapped up with preservative film is：When carrying out slaking test, it is to avoid disintegration examination
The cement mortar of sample is contacted with humidifying soak in wet dry alternation procedure, is caused the pollution of soak and is caused shadow to result of the test
Ring.
4：In step 8, the preservative film of original sample upper surface in disintegration sample is cut off, makes original sample naturally exposed
Purpose is：Ensure that original sample can be contacted with water and air, leaching is provided for the humidifying and drying regime in wet dry alternate environment
The water surface and air-dried face, the wet dry alternating state of band is changed with mimic water-depth.
5：By cement mortar by irregular original rock sample, the square coupons of rule are filled up into square template framework,
The vibrations for avoiding traditional cutting method for making sample generation produce larger disturbance, or even cause original sample surface or part to open
Split and come off, therefore disturbance of the method for making sample of the present invention to rock sample is smaller, more conducively the accuracy of result of the test.
6：Using method of the present invention, sample making course is simple, cost is low, success rate is high, is obtained using this method
Sample can be used for simulating the soft rock slaking test under wet dry alternating and stress collective effect.
Brief description of the drawings
Fig. 1 makes the schematic flow sheet of slaking test sample for the present invention.
Fig. 2 is the schematic three dimensional views of original rock sample.
Fig. 3 is the schematic three dimensional views that preservative film wraps up rock sample.
Fig. 4 is the structural representation of mould.
Fig. 5 is the front view of mould.
Fig. 6 is the left view of mould.
Fig. 7 is the top view of mould.
Fig. 8 is cement mortar schematic diagram.
Fig. 9 is the schematic three dimensional views that mould inside fills half cement mortar.
Figure 10 is the schematic three dimensional views for the sample that step 5 is made.
Figure 11 is the top view for the sample that step 5 is made.
Figure 12 is the A-A sectional views for the sample that step 5 is made.
Figure 13 is the schematic three dimensional views for the sample that step 6 is made.
Figure 14 is the schematic three dimensional views for the sample that step 7 is made.
Figure 15 is the top view for the sample that step 7 is made.
Figure 16 is the sample B-B profiles that step 7 is made.
Figure 17 is the schematic three dimensional views for the sample that step 8 is made.
Figure 18 is the front view for the sample that step 8 is made.
Figure 19 is the top view for the sample that step 8 is made.
Embodiment
Describe the design feature of the present invention in detail in conjunction with accompanying drawing.
Referring to Fig. 1, the preparation method of soft rock slaking test sample under wet dry alternating and stress collective effect, step is as follows：
Step 1：It is determined that the size for standby cuboid sample of drawing up：
According to slaking test requirement, experimental rig feature, the specific size of slaking test sample is determined.For example, wet dry using certain
When alternately and under stress collective effect slaking test device is tested, if dead size is in cuboid sample box in the device
200 × 200 × 100mm, then disintegration sample is cuboid and its size is 200 × 200 × 100mm.
Step 2：Make cuboid（Containing cube）Mould 3；The mould 3 is used to make cuboid（Containing cube）Examination
Sample；The inside dimension of mould 3 is determined according to the size of cuboid sample, mould 3 can be dismantled flexibly.
As shown in figs. 4-7, mould 3 includes the first side plate 8, the second side plate 11, bottom plate 12, transverse link 10, vertical link
13rd, the first nut 9, the second nut 14, the 3rd nut 15；First with the nut 9 of transverse link 10 and first by the first side plate 8 and the
Two side plates 11 are fixed together, then with vertical link 13, the second nut 14 and the 3rd nut 15 by the first side plate 8 and the second side
Plate 11 is fixed on bottom plate 12, and mould 3 is completed, can used；Back out the first nut 9, the second nut 14 and the 3rd nut
15, remove transverse link 10 and vertical link 13, mould 3 completes dismounting.
Step 3：Original rock sample 1 is pre-processed：
Choose the original sample 1 of research institute, it is desirable to which the size of original sample 1 is less than（Gap >=3cm）The inside dimension of mould 3,
Rock sample 1 is wrapped up with preservative film 2.
Step 4：Make cement mortar 4：
According to experiment demand, some strength grade is made（M5~M20）Cement mortar 4.
Step 5：Make slaking test sample：
One layer of mineral oil first is applied in the inner surface of mould 3, then toward a certain amount of cement mortar 4 of filling in mould 3, as shown in fig. 6, filling out
Charge is internal volume half of mould 3 or so.Then the original sample 1 preservative film 2 wrapped up is put into mould 3, and flicking is original
The upper surface 5 of sample 1 moves down original sample 1, until the upper surface 5 of original sample 1 and the top of mould 3 are flushed, then toward in mould 3
Cement mortar 4 is added, until filling up inside mould 3, now, the upper surface 5 of original sample 1 is not just covered by cement mortar 4,
Finally, the gently outer wall of vibrating mould 3, the minute bubbles in cement mortar 4 are discharged, tentatively obtained slaking test sample 6.
Step 6：The maintenance of slaking test sample：
Preliminary obtained slaking test sample 6 in step 5 is put into fog room and conserved, after conserving 28 days, disintegration sample is removed
Outer mould 3.
Step 7：Slaking test sample is post-processed：
With the parcel disintegration sample 6 of preservative film 2, disintegration sample 7 is made, sample is preserved.
Step 8：Preparation before slaking test：
The disintegration sample 7 being made all is wrapped up by preservative film, it is impossible to directly tested, and cuts off the disintegration inner original sample 1 of sample 6
The preservative film 2 of upper surface 5, makes original sample 1 naturally exposed.
Claims (6)
1. the preparation method of soft rock slaking test sample under wet dry alternating and stress collective effect, it is characterised in that including following step
Suddenly：
Step 1：Determine the specific size of slaking test sample；
Step 2：According to the size of sample, mould is determined（3）Inside dimension, mould（3）Can flexibly it dismantle；
Step 3：Choose the original sample of research institute（1）, it is desirable to original sample（1）Size be less than mould（3）Inside dimension,
Use preservative film（2）Wrap up original sample（1）；
Step 4：Make cement mortar（4）；
Step 5：Make slaking test sample（6）；
Step 6：By slaking test sample（6）Maintenance in fog room is put into, the mould outside disintegration sample is removed（3）；
Step 7：Use preservative film（2）Wrap up slaking test sample（6）, disintegration sample is made（7）, preserve sample；
Step 8：Cut off disintegration sample（7）In original sample（1）On preservative film（2）, allow original sample（1）Naturally it is exposed；
By above-mentioned steps, the preparation of soft rock slaking test sample is completed.
2. according to claim 1 under wet dry alternating and stress collective effect soft rock slaking test sample preparation method, its
It is characterised by：The step 5 includes, first in mould（3）Inner surface applies one layer of mineral oil, then toward mould（3）Interior filling is a certain amount of
Cement mortar（4）, then preservative film（2）The original sample of parcel（1）It is put into mould（3）It is interior, flicking original sample（1）'s
Upper surface（5）, make original sample（1）Move down, until original sample（1）Upper surface（5）And mould（3）Top is flushed, then past
Mould（3）Interior addition cement mortar（4）, until filling up mould（3）Inside, now, original sample（1）Upper surface（5）Just
Not by cement mortar（4）Covering, finally, gently vibrating mould（3）Outer wall, by cement mortar（4）Interior minute bubbles discharge, tentatively
Slaking test sample is made（6）.
3. according to claim 2 under wet dry alternating and stress collective effect soft rock slaking test sample preparation method, its
It is characterised by：The cement mortar（4）For mould（3）Internal volume half or so.
4. according to claim 1 under wet dry alternating and stress collective effect soft rock slaking test sample preparation method, its
It is characterised by：In the step 5, pass through cement mortar（4）By irregular original sample（1）Filled up into square template framework
The square coupons of rule；Use cement mortar（4）By irregular original sample（1）When filling up into cuboid sample, it is desirable to original examination
Sample（1）Upper surface（5）And mould（3）Top is flushed.
5. according to claim 1 under wet dry alternating and stress collective effect soft rock slaking test sample preparation method, its
It is characterised by：Mould（3）Including the first side plate（8）, the second side plate（11）, bottom plate（12）, transverse link（10）, vertical link
（13）, the first nut（9）, the second nut（14）, the 3rd nut（15）；First use transverse link（10）With the first nut（9）By
Side plate（8）With the second side plate（11）It is fixed together, then uses vertical link（13）, the second nut（14）With the 3rd nut
（15）By the first side plate（8）With the second side plate（11）It is fixed on bottom plate（12）, mould（3）It is completed, can uses；Back out
First nut（9）, the second nut（14）With the 3rd nut（15）, remove transverse link（10）And vertical link（13）, mould
（3）Complete dismounting.
6. using soft rock slaking test sample under any one wet dry alternating and stress collective effect as described in claim 1 ~ 5
Preparation method, it is characterised in that：The original sample being made, for simulating the examination of the disintegration under wet dry alternating and stress collective effect
Test.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710178849.1A CN106989967B (en) | 2017-03-23 | 2017-03-23 | Method for manufacturing soft rock disintegration test sample under combined action of wet-dry alternation and stress |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710178849.1A CN106989967B (en) | 2017-03-23 | 2017-03-23 | Method for manufacturing soft rock disintegration test sample under combined action of wet-dry alternation and stress |
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| CN106989967B CN106989967B (en) | 2020-02-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111504750A (en) * | 2020-05-27 | 2020-08-07 | 煤炭科学技术研究院有限公司 | Irregular coal rock sample preparation method |
| CN111964989A (en) * | 2020-07-14 | 2020-11-20 | 西华大学 | Easily-disintegrated rock saturation device and using method thereof |
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| CN102169061A (en) * | 2011-01-07 | 2011-08-31 | 河海大学 | Manufacture method for rock samples |
| CN102564868A (en) * | 2011-12-26 | 2012-07-11 | 中国地质大学（武汉） | Water-saturated shear box for water-rock interaction of soft rock |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111504750A (en) * | 2020-05-27 | 2020-08-07 | 煤炭科学技术研究院有限公司 | Irregular coal rock sample preparation method |
| CN111964989A (en) * | 2020-07-14 | 2020-11-20 | 西华大学 | Easily-disintegrated rock saturation device and using method thereof |
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| Publication number | Publication date |
|---|---|
| CN106989967B (en) | 2020-02-14 |
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