CN110186762A - The method that aperture field and seepage flow situation are analyzed under a kind of pair of rock fracture different pressures - Google Patents
The method that aperture field and seepage flow situation are analyzed under a kind of pair of rock fracture different pressures Download PDFInfo
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- CN110186762A CN110186762A CN201910543861.7A CN201910543861A CN110186762A CN 110186762 A CN110186762 A CN 110186762A CN 201910543861 A CN201910543861 A CN 201910543861A CN 110186762 A CN110186762 A CN 110186762A
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- sample
- fissure
- seepage flow
- aperture field
- flow situation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
-
- 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
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
-
- 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
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0062—Crack or flaws
- G01N2203/0066—Propagation of crack
Abstract
The method that aperture field and seepage flow situation are analyzed under a kind of pair of rock fracture different pressures, method includes the following steps: step 1: obtaining cleavage sample；Step 2: cutting；Step 3: Sample A and sample B；Step 4: by filler drop on the fissure-plane of Sample A；Step 5: obtaining fissure-plane in normal pressure is F1When initial situation threedimensional model；Step 6: applying normal force F1；Step 7: obtaining fissure-plane in normal pressure is F1When initial overcurrent condition threedimensional model；Step 8: obtaining the fissure-plane in normal pressure is F1When aperture field and seepage flow situation；Step 9: repeat the above steps 5-8, obtains aperture field and seepage flow situation of the fissure-plane under different normal pressures.The method that aperture field and seepage flow situation are analyzed under a kind of pair of rock fracture different pressures provided by the invention can preferably obtain real opening and seepage flow situation of the rock aperture field under the conditions of different pressures.
Description
Technical field
The present invention relates to apertures under technical fields, the especially a kind of pair of rock fracture different pressures such as ground exploration, construction
The method that field and seepage flow situation are analyzed.
Background technique
In many Tunnel Engineering, underground pipe gallery, in mineral exploration and exploitation engineering, seepage action of ground water causes construction sizable
It influences, has greatly dragged slowly construction speed, or even bring serious safety problem.Certain rock can be split by now needing one kind
Gap distribution at various pressures, aperture truth, obtain the side that rock fracture stop at various pressures, overcurrent is analyzed
Method ensures safety of life and property to provide reference frame for engineering exploration, infiltration closure, construction etc..
Summary of the invention
Technical problem to be solved by the invention is to provide aperture field and seepage flow under a kind of pair of rock fracture different pressures
The method that situation is analyzed can preferably obtain real opening and seepage flow of the rock aperture field under the conditions of different pressures
Situation provides experiment support for correlation teaching research, precisely to realize that the closure of rock seepage flow provides data supporting, improves rock
The closure efficiency of stone seepage flow is avoided or reduced because rock closure is not thorough, not comprehensively, not perfect shadow bad caused by engineering
It rings.
In order to solve the above technical problems, the technical scheme adopted by the invention is that: under a kind of pair of rock fracture different pressures
The method that aperture field and seepage flow situation are analyzed, method includes the following steps:
Step 1: rock cleavage is obtained one piece of cleavage sample by the rock of type needed for choosing；
Step 2: cleavage sample is cut into the cuboid sample of suitable size according to fissure direction；
Step 3: cuboid sample being prolonged into splitting seam and is separated, is divided into two pieces of rock samples, is denoted as respectively: Sample A and examination
Sample B；
Step 4: it is that rectangle sample is whole by Sample A and sample B split by filler drop on the fissure-plane of Sample A,
And the relative position of the split is marked to be recorded, guarantee that relative position does not change when multiple split；
Step 5: the rectangle sample by step 4 again split is certain big entirely through the application of normal force pressurizing device
Small normal force, is denoted as F1, after to be filled dose of solidification, normal force pressurizing device is opened, separates Sample A and sample B, taking-up has been coagulated
Solid filler, by this in solid filler carry out 3-D scanning, obtain fissure-plane normal pressure be F1When initial feelings
The threedimensional model of condition, is denoted as P1；
Step 6: by Sample A and sample B, split forms rectangle sample entirety again, installs on the whole in rectangle sample
Filling apparatus is sealed, by applying normal force F by normal force pressurizing device1；
Step 7: filler is filled by sealing the filler of filling apparatus into the crack seam between Sample A and sample B
It is interior, after the filler solidification in the seam of crack, normal force pressurizing device and sealing filling apparatus are opened, Sample A and sample are separated
B takes out the filler of solidification, this is carried out 3-D scanning in solid filler, fissure-plane is F in normal pressure1When just
The threedimensional model of beginning overcurrent condition, is denoted as Q1；
Step 8: by threedimensional model P1With threedimensional model Q1It compares and analyzes, obtaining the fissure-plane in normal pressure is
F1When aperture field and seepage flow situation；
Step 9: repeat the above steps 5-8, changes the normal force size of application, respectively obtains crack and is sewn on normal force F2、
F3、F4... under two kinds of fissure-planes threedimensional model P2、P3、P4And Q2、Q3、Q4..., you can get it the fissure-plane is in different normal direction
Aperture field and seepage flow situation under pressure.
It by rock cleavage is the side that swelling agent is refilled by V-shape slot prefabricated at the crack of cleavage sample in step 1
What method was realized.
In step 2, cutting cuboid sample is substantially moved towards according to splitting surface, while fissure-plane being made to be located substantially at cuboid
The center of sample.
Filler used in step 4- step 9 is liquid-state silicon gel.
Normal force pressurizing device includes being placed in the upside pressurization steel bar of rectangle sample entirety upper surface and being placed in
Pressurize steel bar for the downside of rectangle sample entirety lower surface, and upside pressurization steel bar and downside pressurization steel bar both ends pass through reinforcing respectively
Screw rod connection.
Sealing filling apparatus includes the pressure hull of opened top, is provided with and rectangle sample entirety phase in pressure hull
The sealing ring of cooperation is provided on pressure hull and stitches the filler and exhaust outlet matched with the crack of rectangle sample entirety.
In step 6 again split when splitting mode it is identical as the splitting mode of step 4 split.
The method that aperture field and seepage flow situation are analyzed under a kind of pair of rock fracture different pressures provided by the invention,
It has the beneficial effect that:
1, it innovatively proposes to generate uniform expansive force using swelling agent, and combines restraint device (normal force pressurization dress
Set) to uniformly application pressure is carried out to sample step by step, it solves test to the stringency of uniform stressed, cuts construction cost and drop significantly
It is low.
2, it innovatively proposes to utilize silicone filler fissure-plane, makes full use of the property of silica gel, reflect rock using entity
Aperture, completely realize the visualization of fractured zones.
3, can really reflect the fissure-plane the pressure effect under true situation of change, including portion because
It is the pole miniature deformation generated under the action of normal pressure and partial region because of rock deformation, so that seepage flow face locally generates
Slight change, substantially increase the accuracy of test, and then be applicable to multiple fields.
4, the entity silica gel model in available seepage flow face, convenient for carrying out the relevant analysis of follow-up test work at any time, and
Partial region is labeled.
5, be compared confirmation by two methods, in available aperture field not overcurrent region the case where, and can basis
Actual conditions analyze the reason of not overcurrent.
6, by constantly regulate pressure, being gradually increased with pressure, the variation rule in overcurrent region can intuitively be analyzed
The variation of rule and aperture field；Importantly foundation is provided for experiment and case history.
7, easy to operate, by the distribution of simply and reliablely program you can get it rock aperture field, and do not use power to supply
Energy equipment, environmentally protective, test philosophy is clearly reliable, promotes practical.
8, by the distribution situation of test analysis aperture field, and the variation of aperture field at various pressures, it can be seepage flow work
The impervious leakage-stopping of journey provides rational technique support, reduces engineering accident.
9, normal force pressurizing device used and sealing filling apparatus structure are simply firm, can repeatedly be dismantled, be carried out
Multiple comparative experiments reduces the otherness because of different models, the deviation of bring test data.Experimental rig number is reduced simultaneously
Amount, greatly reduces experimentation cost.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples:
Fig. 1 is the schematic diagram that step 5 of the present invention has installed normal force pressurizing device additional；
Fig. 2 is that step 6 of the present invention has installed normal force pressurizing device additional and sealed the schematic diagram of filling apparatus；
Fig. 3 is the schematic diagram of the present invention and sealing filling apparatus.
Specific embodiment
As shown in Figure 1-Figure 3, the side that aperture field and seepage flow situation are analyzed under a kind of pair of rock fracture different pressures
Method, method includes the following steps:
Step 1: rock cleavage is obtained one piece of cleavage sample 1 by the rock of type needed for choosing；
Step 2: cleavage sample 1 is cut into the cuboid sample of suitable size according to fissure direction；
Step 3: cuboid sample being prolonged into splitting seam and is separated, is divided into two pieces of rock samples, is denoted as respectively: Sample A and examination
Sample B；
Step 4: being rectangular by Sample A and sample B split by filler (liquid-state silicon gel) drop on the fissure-plane 9 of Sample A
Shape sample whole 8, and mark the relative position of the split recorded (record of relative position, should along vertically with fissure-plane
Direction), guarantee that relative position does not change when multiple split；
Step 5: the rectangle sample whole 8 by step 4 again split is applied centainly by normal force pressurizing device
The normal force of size is denoted as F1 and opens normal force pressurizing device after to be filled dose (liquid-state silicon gel gradually becomes solid-state) solidification,
Sample A and sample B are separated, the filler (in solid silica gel) solidified is taken out, this is three-dimensional in the progress of solid filler
Scanning obtains the threedimensional model of initial situation of the fissure-plane 9 when normal pressure is F1, is denoted as P1；
Step 6: by Sample A and sample B, split forms rectangle sample whole 8 again, pacifies on rectangle sample whole 8
Dress sealing filling apparatus, by applying normal force F1 by normal force pressurizing device；
Step 7: by filler (liquid-state silicon gel) by the filler 3 of sealing filling apparatus fill into Sample A and sample B it
Between crack seam in, after crack seam in filler solidification (silica gel gradually becomes solid-state) after, open normal force pressurizing device and
Filling apparatus is sealed, Sample A and sample B are separated, the filler (in solid silica gel) of solidification is taken out, is in solid filling by this
Agent carries out 3-D scanning, and the threedimensional model of initial overcurrent condition of the fissure-plane 9 when normal pressure is F1 is denoted as Q1；
Step 8: threedimensional model P1 and threedimensional model Q1 being compared and analyzed, obtain the fissure-plane 9 in normal pressure
Aperture field and seepage flow situation when for F1, specifically:
The main distinction of two kinds of models is that portion void is dead air space, and no overcurrent occurs, and can be obtained according to comparative analysis
The truth of overcurrent out, though which part in the fissure-plane can be obtained by comparative analysis, there are apertures, do not occur
Stream, can be further analysed this phenomenon；
Step 9: repeat the above steps 5-8, changes the normal force size of application, respectively obtain crack seam 3 normal force F2,
Threedimensional model P2, P3, P4 and Q2, Q3, Q4 ... of two kinds of fissure-planes 9 under F3, F4 ..., you can get it the fissure-plane 9 is not
With under normal pressure aperture field and seepage flow situation.
It by rock cleavage is that swelling agent is refilled by V-shape slot 2 prefabricated at the crack of cleavage sample 1 in step 1
What method was realized.
In step 2, cutting cuboid sample is substantially moved towards according to splitting surface, while it is rectangular to be located substantially at fissure-plane 9
The center of body sample.
The filler that step 4- step 9 is filled is liquid-state silicon gel, is liquid before instillation, to guarantee that it can be filled
Entire fissure-plane, without omitting, while after drying again can will be under all slight change complete documentations of fissure-plane
Come, while not being adhered again with rock after its drying.
Normal force pressurizing device includes being placed in the upside pressurization steel bar 5 of whole 8 upper surfaces of rectangle sample and placing
Downside pressurization steel bar 6 in whole 8 lower surfaces of rectangle sample, upside pressurization steel bar 5 and downside pressurization 6 both ends of steel bar lead to respectively
Cross the connection of afterburner screw 7.
Sealing filling apparatus includes the pressure hull 2 of opened top, is provided in pressure hull 2 whole with rectangle sample
8 sealing rings 1 matched, be provided on pressure hull 2 filler 3 matched with the crack seam 3 of rectangle sample whole 8 and
Exhaust outlet 4；Filler (liquid-state silicon gel) is filled by filler 3 into crack seam 3, while by internal air by exhaust outlet
4 discharges, until filling terminates when gas vent 4 is discharged without air.
In step 6 again split when splitting mode it is identical as the splitting mode of step 4 split.
The above embodiments are only the preferred technical solution of the present invention, and are not construed as limitation of the invention, this Shen
Please in embodiment and embodiment in feature in the absence of conflict, can mutual any combination.Protection model of the invention
The technical solution that should be recorded with claim is enclosed, the equivalent replacement side of technical characteristic in the technical solution recorded including claim
Case is protection scope.Equivalent replacement i.e. within this range is improved, also within protection scope of the present invention.
Claims (7)
1. the method that aperture field and seepage flow situation are analyzed under a kind of pair of rock fracture different pressures, it is characterised in that the party
Method the following steps are included:
Step 1: rock cleavage is obtained one piece of cleavage sample (1) by the rock of type needed for choosing；
Step 2: cleavage sample (1) is cut into the cuboid sample of suitable size according to fissure direction；
Step 3: cuboid sample being prolonged into splitting seam and is separated, is divided into two pieces of rock samples, is denoted as respectively: Sample A and sample B；
Step 4: being that rectangle sample is whole by Sample A and sample B split by filler drop on the fissure-plane (9) of Sample A
(8), and the relative position of the split is marked to be recorded, guarantees that relative position does not change when multiple split；
Step 5: the rectangle sample whole (8) by step 4 again split is certain big by the application of normal force pressurizing device
Small normal force, is denoted as F1, after to be filled dose of solidification, normal force pressurizing device is opened, separates Sample A and sample B, taking-up has been coagulated
Solid filler, by this in solid filler carry out 3-D scanning, obtain fissure-plane (9) normal pressure be F1When it is initial
The threedimensional model of situation, is denoted as P1；
Step 6: by Sample A and sample B, split forms rectangle sample entirety (8) again, pacifies on rectangle sample whole (8)
Dress sealing filling apparatus, by applying normal force F by normal force pressurizing device1；
Step 7: filler being filled by the filler (3) of sealing filling apparatus into the crack between Sample A and sample B and is stitched
(3) in, after the filler solidification in crack seam (3), normal force pressurizing device and sealing filling apparatus is opened, Sample A is separated
With sample B, the filler of solidification is taken out, this is subjected to 3-D scanning in solid filler, fissure-plane (9) is in normal pressure
F1When initial overcurrent condition threedimensional model, be denoted as Q1；
Step 8: by threedimensional model P1With threedimensional model Q1It compares and analyzes, obtaining the fissure-plane (9) in normal pressure is F1
When aperture field and seepage flow situation；
Step 9: repeat the above steps 5-8, changes the normal force size of application, respectively obtains crack seam (3) in normal force F2、F3、
F4... under two kinds of fissure-planes (9) threedimensional model P2、P3、P4And Q2、Q3、Q4..., you can get it the fissure-plane (9) is in difference
Aperture field and seepage flow situation under normal pressure.
2. aperture field and seepage flow situation are analyzed under a kind of pair of rock fracture different pressures according to claim 1
Method, it is characterised in that: in step 1 by rock cleavage be by V-shape slot (2) prefabricated at the crack of cleavage sample (1) again
What the method for filling swelling agent was realized.
3. aperture field and seepage flow situation are analyzed under a kind of pair of rock fracture different pressures according to claim 1
Method, it is characterised in that: in step 2, substantially move towards cutting cuboid sample according to splitting surface, while keeping fissure-plane (9) big
Cause the center for being located at cuboid sample.
4. aperture field and seepage flow situation are analyzed under a kind of pair of rock fracture different pressures according to claim 1
Method, it is characterised in that: filler used in step 4- step 9 is liquid-state silicon gel.
5. aperture field and seepage flow situation are analyzed under a kind of pair of rock fracture different pressures according to claim 1
Method, it is characterised in that: normal force pressurizing device includes the upside pressurization steel bar for being placed in whole (8) upper surface of rectangle sample
(5) and it is placed in downside pressurization steel bar (6) of whole (8) lower surface of rectangle sample, upside pressurization steel bar (5) and downside add
Compressed steel item (6) both ends pass through afterburner screw (7) connection respectively.
6. aperture field and seepage flow situation are analyzed under a kind of pair of rock fracture different pressures according to claim 1
Method, it is characterised in that: sealing filling apparatus includes the pressure hull (2) of opened top, is provided in pressure hull (2) and length
The sealing ring (1) that square coupons whole (8) match is provided with the crack with rectangle sample whole (8) on pressure hull (2)
The filler (3) and exhaust outlet (4) that seam (3) matches.
7. aperture field and seepage flow situation are analyzed under a kind of pair of rock fracture different pressures according to claim 1
Method, it is characterised in that: in step 6 again split when splitting mode it is identical as the splitting mode of step 4 split.
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| CN111323356A (en) * | 2020-03-06 | 2020-06-23 | 三峡大学 | Method for measuring rock fracture opening and flow velocity vector based on digital image processing technology |
| CN112014292A (en) * | 2020-08-26 | 2020-12-01 | 广东丰业电力器材有限公司 | Method for testing concrete impermeability |
| CN113188958A (en) * | 2021-04-19 | 2021-07-30 | 中国地质大学（武汉） | Fracture overflowing device and fracture seepage visual test system |
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| CN110186762B (en) | 2022-02-01 |
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