CN109425519A - The sample preparation methods of Seepage of Rock Masses test in a kind of design of nuclear power engineering - Google Patents
The sample preparation methods of Seepage of Rock Masses test in a kind of design of nuclear power engineering Download PDFInfo
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- CN109425519A CN109425519A CN201710741053.2A CN201710741053A CN109425519A CN 109425519 A CN109425519 A CN 109425519A CN 201710741053 A CN201710741053 A CN 201710741053A CN 109425519 A CN109425519 A CN 109425519A
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- rock
- sealing ring
- seepage
- crack rock
- nuclear power
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- 239000011435 rock Substances 0.000 title claims abstract description 119
- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 238000013461 design Methods 0.000 title claims abstract description 26
- 238000005464 sample preparation method Methods 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 62
- 239000000463 material Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims description 6
- 230000003746 surface roughness Effects 0.000 claims description 5
- 238000010008 shearing Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 230000005226 mechanical processes and functions Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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
Abstract
The invention belongs to nuclear power engineering Seepage of Rock Masses the field of test technology, and in particular to the sample preparation methods of Seepage of Rock Masses test in a kind of design of nuclear power engineering.The identical rock mass of two stock materials is piled up column up and down and placed by the present invention, and the upper surface of the lower surface of upper crack rock and the next crack rock forms contact surface；The upper surface of the next crack rock is equipped with a circle groove, places sealing ring in groove；Several through-holes are drilled through inside upper crack rock up and down, and the lower end surface of through-hole is all contained in the region that the next crack rock sealing ring is surrounded；Water flow is flowed into from the partial through holes of upper crack rock, the seepage flow inside contact surface sealing ring, and then is flowed out by remaining through-hole of upper crack rock.The present invention is wrapped up without the cavity of certain volume, permeance property test result can accurately reflect crack rock from the mechanical property under mechanical function, suitable for the Flow In Jointed Rock Masses sealing under the various nanoscale regimes such as conventional Centimeter Level scale and meter level scale above.
Description
Technical field
The invention belongs to nuclear power engineering Seepage of Rock Masses the field of test technology, and in particular to rock mass in a kind of design of nuclear power engineering
The sample preparation methods of seepage flow test.
Background technique
In nuclear power engineering design, the mechanical attribute of rock mass is be related to Nuclear power project quality and engineering safety important
Design objective.In view of the strict demand of nuclear power engineering quality, the seepage characteristic of rock mass is even more key parameter therein, for
The construction feasibility and long-time stability of nuclear power facility have a major impact.The infiltration coefficient of rock mass and correlative study belong to crack Jie
The research category of matter basic mechanical characteristic, the quasi-brittle material for rock type containing crack, permeance property are to determine engineering rock mass
An important factor for long-term safety.Ensure that permeability test of the fissuted medium under different stress can reach sealing, is quasi-
The really premise of test crack rock permeance property.Realize that the sealing of crack rock during the test stands in the breach what needs solved
Problem is exactly the preparation of rock sample, and the preparation method of sample is the key that constraint sealing performance.
The sample preparation methods of existing Seepage of Rock Masses test, rock sample is cylindrical or cube shaped, scale is smaller, generally
Centimetre rank, is that rock mass is cut to dimidiation, and an another alignment is restored, and then rock mass is wrapped in the cavity of certain volume,
Cavity is sealed outside cavity, ensure that the sealing of crack rock indirectly.This sample preparation methods only reflect
Permeance property of the crack rock of package cavity inside under different mechanical functions, can not reflect crack rock from power
Mechanical property under effect.Importantly, this method has significant limitation, it can only be in crack rock smaller body
Product is lower to be used, the crack rock sealing being not particularly suited within the scope of meter level and the above large scale.
Summary of the invention
The technical problem to be solved in the invention are as follows:
The sample preparation methods of existing Seepage of Rock Masses test, used crack rock sample are wrapped in certain sky
It is intracavitary, permeance property of the crack rock of package cavity inside under different mechanical functions is only reflected, can not reflect crack
Rock mass is from the mechanical property under mechanical function, and the crack rock Penetration Signature of small scale is unsuitable for large scale model
Enclose interior crack rock Penetration Signature.
It is described that technical scheme is as follows:
The sample preparation methods of Seepage of Rock Masses test in a kind of design of nuclear power engineering, comprising the following steps:
The identical rock mass of two stock materials is piled up to column up and down to place, the lower surface of upper crack rock and the next crack rock
Upper surface forms contact surface；The upper surface of the next crack rock is equipped with a circle groove, places sealing ring in groove；Upper crack rock
Internal portion drills through several through-holes up and down, and the lower end surface of through-hole is all contained in what the next crack rock sealing ring was surrounded
In region；Water flow is flowed into from the partial through holes of upper crack rock, the seepage flow inside contact surface sealing ring, and then is split by upper
Remaining through-hole of gap rock mass flows out.
As a preferred solution: the mutual shearing changing of the relative positions of certain distance is realized between upper crack rock, the next crack rock,
By controlling shear path length, i.e., realize in the horizontal plane upper crack rock and the next crack rock in left and right directions or
It is close to realize that the water flow between upper crack rock, the next crack rock at contact surface is completely in always for the changing of the relative positions in the front-back direction
Inside seal.
As a preferred solution: seal diameter size, production standard, upper crack rock according to national " O-ring seal "
Body weight, the elasticity modulus of sealing ring material are determining.For example, sealing ring cylindrical cross-section diameter dimension range is 8.4mm.
As a preferred solution: the minimum value of sealing ring height of projection is allowed back under certain pressure effect according to sealing ring
The design of bullet amount；The maximum value of sealing ring height of projection must guarantee that under shear action, sealing ring still is able to be fixed in groove.
As a preferred solution: the position big to sealing ring turning carries out round and smooth processing, sealing ring turning arc radius is preferred
Less than or equal to 1mm.
As a preferred solution: the groove, the medium position positioned at the next crack rock upper surface.
As a preferred solution: the width of the groove, is arranged according to the diameter of sealing ring；The depth of the groove, according to
The height of projection setting of the diameter and sealing ring of sealing ring.For example, the width of groove is 11.5mm, depth 6.9mm.
As a preferred solution: the contact surface roughness range between upper crack rock, the next crack rock is 0-1.6,
The roughness range of groove side and bottom surface is 0-1.6, and finish is 6 degree.
The invention has the benefit that
(1) sample preparation methods that Seepage of Rock Masses is tested in a kind of nuclear power engineering of the invention design, pass through the next crack
The sealing ring of rock mass upper surface is able to guarantee that water flow is sealed in inside the region always during the test, permeance property test knot
Fruit can accurately reflect crack rock from the mechanical property under mechanical function；
(2) sample preparation methods that Seepage of Rock Masses is tested in a kind of nuclear power engineering of the invention design, without certain
The cavity of volume wraps up, suitable for the crack rock under the various nanoscale regimes such as conventional Centimeter Level scale and meter level scale above
Seepage flow sealing；
(3) sample preparation methods that Seepage of Rock Masses is tested in a kind of nuclear power engineering of the invention design, can be routinely
The supplemental characteristic of liquid medium surface water pressure is measured and obtained, and targetedly obtains certain specific position liquid medium hydraulic pressure
Force data；
(4) sample preparation methods that Seepage of Rock Masses is tested in a kind of nuclear power engineering of the invention design, measuring process is convenient,
Measurement result is accurate and reliable, and the permeance property particularly suitable for rock, coagulation great soil group quasi-brittle material is tested.
Detailed description of the invention
Fig. 1 is the upper and lower crack rock schematic layout pattern of the method for the present invention；
Fig. 2 is the upper crack rock structural schematic diagram of the method for the present invention；
Fig. 3 is the next crack rock structural schematic diagram of the method for the present invention；
Fig. 4 is the sealing ring of the method for the present invention and the top view of groove.
In figure, the upper crack rock of 1-, the bottom 2- crack rock, 3- through-hole, 4- through-hole lower end surface, 5- groove, 6- seepage flow
Region, 7- sealing ring.
Specific embodiment
With reference to the accompanying drawings and examples to the sample system of Seepage of Rock Masses test in a kind of nuclear power engineering design of the invention
Preparation Method is described in detail.
The sample preparation methods of Seepage of Rock Masses test in nuclear power engineering design in the present embodiment, comprising the following steps:
The identical rock mass of two stock materials is piled up to column up and down to place, the lower surface of upper crack rock 1 and the next crack rock 2
Upper surface formed contact surface.
The upper surface of the next crack rock 2 is equipped with a circle groove 5, places sealing ring 7 in groove 5.In upper crack rock 1
Portion drills through several through-holes 3 up and down, and through-hole lower end surface 4 is all contained in the area that the next 2 sealing ring 7 of crack rock is surrounded
In domain.Water flow is flowed into from the partial through holes 3 of upper crack rock 1, in 7 inside seepage flow of contact surface sealing ring, and then by upper
Remaining through-hole 3 of crack rock 1 flows out.
In the present embodiment, the mutual shearing changing of the relative positions of certain distance can be achieved between upper and lower crack rock 2, pass through control
Shear path length realizes upper and lower two pieces of rock mass in left and right directions or the changing of the relative positions in the front-back direction in the horizontal plane, in realization
Water flow between position crack rock 1, the next crack rock 2 at contact surface is completely in always inside sealing ring 7.
In the present embodiment, the sealing ring 7 can be arc-shaped or other shapes.The big position in 7 turning of sealing ring into
The round and smooth processing of row, keeps turning arc radius as small as possible, and preferably 7 turning arc radius of sealing ring is less than or equal to 1mm.
According to the production standard of national " O-ring seal 7 ", and combine upper 1 weight of crack rock and 7 material of sealing ring
Elasticity modulus, calculate pressure, obtain the diameter dimension of suitable 7 cylindrical cross-section of sealing ring.In the present embodiment, the sealing
The diameter range for enclosing 7 cylindrical cross-sections is 8.4mm.
The sealing ring 7 has certain thickness, and the height for protruding from the next 2 upper surface of crack rock is known as protrusion height
Degree: the minimum value of height of projection allows springback capacity to design according to sealing ring 7 under certain pressure effect；The maximum of height of projection
Value must guarantee that under shear action, sealing ring 7 still is able to be fixed in groove 5, prevent sealing ring 7 by the shearing changing of the relative positions back and forth up to not
To sealing effect.
Groove 5 positioned at the next 2 upper surface of crack rock is preferably placed at the middle position of the next 2 upper surface of crack rock
It sets；The width of groove 5 is arranged according to the diameter of sealing ring 7, and in the present embodiment, the width of groove 5 is 11.5mm；The depth of groove 5
Degree is arranged according to the height of projection of the diameter of sealing ring 7 and sealing ring 7, and in the present embodiment, the depth of groove 5 is 6.9mm.
Surface roughness properties have decisive role to the sealing effect of sealing ring 7.In the present embodiment, upper crack rock
1, the contact surface roughness range between the next crack rock 2 is 0-1.6 (finish is 6 degree)；5 side of groove and bottom surface
Roughness range be 0-1.6 (finish be 6 degree).
Claims (10)
1. the sample preparation methods of Seepage of Rock Masses test in a kind of nuclear power engineering design, it is characterised in that: the following steps are included:
The identical rock mass of two stock materials is piled up to column up and down to place, the lower surface of upper crack rock (1) and the next crack rock (2)
Upper surface formed contact surface；
The upper surface of the next crack rock (2) is equipped with circle groove (5), places sealing ring (7) in groove (5)；Upper crack rock
It is drilled through up and down several through-holes (3) inside body (1), and through-hole lower end surface (4) are all contained in the next crack rock (2) sealing
In the region that circle (7) is surrounded；Water flow is flowed into from the partial through holes (3) of upper crack rock (1), in contact surface sealing ring (7)
Internal seepage flow, and then flowed out by remaining through-hole (3) of upper crack rock (1).
2. the sample preparation methods of Seepage of Rock Masses test in a kind of nuclear power engineering design, it is characterised in that: upper crack rock
(1), the mutual shearing changing of the relative positions that certain distance is realized between the next crack rock (2), by controlling shear path length, i.e., in water
Upper crack rock (1) and bottom crack rock (2) are realized in plane in left and right directions or the changing of the relative positions in the front-back direction, in realization
It is internal that water flow between position crack rock (1), the next crack rock (2) at contact surface is completely in sealing ring (7) always.
3. the sample preparation methods of Seepage of Rock Masses test, feature exist in nuclear power engineering design according to claim 1 or 2
In sealing ring (7) diameter dimension, according to the production standard of national " O-ring seal (7) ", upper crack rock (1) weight, close
The elasticity modulus of seal (7) material determines.
4. the sample preparation methods of Seepage of Rock Masses test in nuclear power engineering design according to claim 3, it is characterised in that:
The minimum value of sealing ring (7) height of projection allows springback capacity to design according to sealing ring (7) under certain pressure effect；Sealing ring
(7) maximum value of height of projection must guarantee under shear action, and sealing ring (7) still is able to be fixed in groove (5).
5. the sample preparation methods of Seepage of Rock Masses test, feature exist in nuclear power engineering design according to claim 1 or 2
In: the position big to sealing ring (7) turning carries out round and smooth processing.
6. the sample preparation methods of Seepage of Rock Masses test in nuclear power engineering design according to claim 5, it is characterised in that:
Sealing ring (7) the turning arc radius is less than or equal to 1mm.
7. the sample preparation methods of Seepage of Rock Masses test, feature exist in nuclear power engineering design according to claim 1 or 2
In: the groove (5) is located at the medium position of the next crack rock (2) upper surface.
8. the sample preparation methods of Seepage of Rock Masses test in nuclear power engineering design according to claim 4, it is characterised in that:
The width of the groove (5) is arranged according to the diameter of sealing ring (7)；The depth of the groove (5), according to the straight of sealing ring (7)
The setting of the height of projection of diameter and sealing ring (7).
9. the sample preparation methods of Seepage of Rock Masses test in nuclear power engineering design according to claim 7, it is characterised in that:
The diameter dimension range of sealing ring (7) cylindrical cross-section is 8.4mm；The width of the groove (5) is 11.5mm；It is described recessed
The depth of slot (5) is 6.9mm.
10. the sample preparation methods of Seepage of Rock Masses test, feature exist in nuclear power engineering design according to claim 7
Contact surface roughness range between: upper crack rock (1), the next crack rock (2) is 0-1.6, groove (5) side and
The roughness range of bottom surface is 0-1.6, and finish is 6 degree.
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| CN201710741053.2A CN109425519A (en) | 2017-08-25 | 2017-08-25 | The sample preparation methods of Seepage of Rock Masses test in a kind of design of nuclear power engineering |
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| CN201710741053.2A CN109425519A (en) | 2017-08-25 | 2017-08-25 | The sample preparation methods of Seepage of Rock Masses test in a kind of design of nuclear power engineering |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819878A (en) * | 2015-04-23 | 2015-08-05 | 绍兴文理学院 | Preparation method of rock fracture test sample and equivalent permeability parameter measuring method |
| CN105466828A (en) * | 2014-09-09 | 2016-04-06 | 核工业北京地质研究院 | High-seepage-pressure-resistant sealing method for fractured rock mass under shearing effect |
| CN105717015A (en) * | 2014-12-05 | 2016-06-29 | 核工业北京地质研究院 | Meter-scale fractured rock mass permeability testing method |
| CN105717017A (en) * | 2014-12-05 | 2016-06-29 | 核工业北京地质研究院 | Experiment method for testing permeability of rough fracture rock |
-
2017
- 2017-08-25 CN CN201710741053.2A patent/CN109425519A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466828A (en) * | 2014-09-09 | 2016-04-06 | 核工业北京地质研究院 | High-seepage-pressure-resistant sealing method for fractured rock mass under shearing effect |
| CN105717015A (en) * | 2014-12-05 | 2016-06-29 | 核工业北京地质研究院 | Meter-scale fractured rock mass permeability testing method |
| CN105717017A (en) * | 2014-12-05 | 2016-06-29 | 核工业北京地质研究院 | Experiment method for testing permeability of rough fracture rock |
| CN104819878A (en) * | 2015-04-23 | 2015-08-05 | 绍兴文理学院 | Preparation method of rock fracture test sample and equivalent permeability parameter measuring method |
Non-Patent Citations (2)
| Title |
|---|
| 满轲;刘晓丽;苏锐;王驹;周宏伟;赵阳;: "大尺度单裂隙介质应力渗流耦合试验台架及其渗透系数测试研究", 岩石力学与工程学报, vol. 34, no. 10, pages 2064 - 2072 * |
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