CN109709300A - A kind of Faults in Tunnels mud grouting and reinforcing orthogonal experiment analysis method and experimental system - Google Patents
A kind of Faults in Tunnels mud grouting and reinforcing orthogonal experiment analysis method and experimental system Download PDFInfo
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- CN109709300A CN109709300A CN201811373659.6A CN201811373659A CN109709300A CN 109709300 A CN109709300 A CN 109709300A CN 201811373659 A CN201811373659 A CN 201811373659A CN 109709300 A CN109709300 A CN 109709300A
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Abstract
The embodiment of the present invention discloses a kind of Faults in Tunnels mud slip casting orthogonal experiment analysis method and experimental system, is related to ground and Geological Engineering technical field, to instruct Faults in Tunnels grouting and reinforcing training works to practice.Choose three horizontal fault gouges by note medium simulation different porosities；Make injecting paste material, including the first injecting paste material of production, the second injecting paste material and third injecting paste material；Obtain the first compression strength data and the second compression strength data；- three injecting paste material of three stress levels level and three is calculated separately out by the mean compressive strength data before and after the grouting and reinforcing under note medium level orthogonal experiment according to the first compression strength data and the second compression strength data；According to the factor of the mean compressive strength data analyzing influence fault gouge grouting consolidation effect.The present invention suitable for mine, dig up mine or tunnel excavation present in influence fault gouge grouting and reinforcing factor theoretical research.
Description
Technical field
The present invention relates to ground and Geological Engineering technical field more particularly to a kind of orthogonal reality of Faults in Tunnels mud grouting and reinforcing
Test analysis method and experimental system.
Background technique
Tomography is to cause one of tunnel gushing water, the Geological Hazards source of prominent mud disaster, is that tunnel safety is built and runed
Crucial control geologic(al) factor, mostly use grouting strengthening method to carry out reparation regulation to tomography both at home and abroad at present, but be limited to break
The anisotropy and complexity of layer scale, consolidated fill situation, hydrogeologic condition etc., the research of grouting and reinforcing mechanism far lag
In engineering practice.
The research of current grouting and reinforcing mechanism is mostly the grouting and reinforcing for the rock mass, crack rock or the layer of sand that destroy
The analysis and research of method still lack the analysis method for being directed to Faults in Tunnels mud grouting and reinforcing, to instruct Faults in Tunnels mud slip casting
Reinforce training works practice.
Summary of the invention
In view of this, the embodiment of the present invention provides the orthogonal experiment analysis method and reality of a kind of Faults in Tunnels mud grouting and reinforcing
Check system, to instruct Faults in Tunnels grouting and reinforcing training works to practice.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of Faults in Tunnels mud grouting and reinforcing orthogonal experiment analysis method, comprising steps of
Choose three horizontal fault gouges by note medium simulation different porosities；
Make injecting paste material, including the first injecting paste material of production, the second injecting paste material and third injecting paste material；
First injecting paste material includes: 100 parts of cement, 3 parts of sodium bentonites, 1.3 parts of water-reducing agents；
Second injecting paste material includes: 60 parts of cement, 40 parts of flyash, 3 parts of sodium bentonites and 1.3 parts of water-reducing agents；
The third injecting paste material includes: 60 parts of cement, 25 parts of flyash, 15 parts of slags, 3 parts of sodium bentonites and 1.3
Part water-reducing agent；
By note medium to simulate three the first different Faults in Tunnels structural environments respectively quiet at room temperature by described
It sets 7 days；
Described three the first different tunnel construction environment are pressed at three respectively with 1000 universal testing machine of southern exposure GAW
Uniaxial compression test is carried out under power level；
Acquire first in the orthogonal experiment under corresponding three the first tunnel construction environment of three stress levels
Compression strength data；
Grouting pipe is inserted into the first Faults in Tunnels structural environment；
Above-mentioned three kinds of injecting paste materials are injected in Faults in Tunnels by the grouting pipe using grouting and reinforcing experimental system,
Grouting and reinforcing body is formed to the first Faults in Tunnels grouting and reinforcing, and stands 7 days at room temperature；
Above-mentioned uniaxial compression test is answered to different grouting and reinforcing weight, and is acquired corresponding in three stress levels
The second compression strength data in the orthogonal experiment of three grouting and reinforcing bodies；
Three stress levels, one or three note is calculated separately out according to the first compression strength data and the second compression strength data
Pulp material is horizontal and three by the mean compressive strength data before and after the grouting and reinforcing under note medium level orthogonal experiment；
According to the factor of the mean compressive strength data analyzing influence fault gouge grouting consolidation effect.
Preferably, three pressures are calculated separately out according to the first compression strength data and the second compression strength data described
Power-three injecting paste materials of level are horizontal and three by the mean compressive strength number before and after the grouting and reinforcing under note medium level orthogonal experiment
According to including: later
Stress-strain curve is drawn according to the mean compressive strength data；
Grouting pressure value is determined according to the curve graph.
Preferably, three pressures are calculated separately out according to the first compression strength data and the second compression strength data described
Power-three injecting paste materials of level are horizontal and three by the mean compressive strength number before and after the grouting and reinforcing under note medium level orthogonal experiment
According to later further include:
Draw orthogonal data computational chart；
The mean compressive strength data are imported into orthogonal data computational chart；
Calculate the different very poor values by under note medium, injecting paste material and grouting pressure level；
Grouting and reinforcing parameter is determined according to the very poor value.
Preferably, described that mud undisturbed soil is gushed by the tunnel that note medium is 1.45g/cm3,1.21g/cm3 and 1.07g/cm3.
Preferably, the method also includes: using scanning electron microscope to the first tunnel construction tomography environment before and after slip casting into
Row scanning obtains the first Faults in Tunnels structural environment and amplifies pattern；
It is observed according to the heterogeneous microstructure that the pattern reinforces front and back to the first Faults in Tunnels；
Grouting consolidation effect is evaluated according to the variation of the heterogeneous microstructure.
Second aspect, the embodiment of the present invention also provide a kind of Faults in Tunnels slip-casting mud reinforcing experimental system, comprising: grouting pump
And Faults in Tunnels simulates cavity, the grouting pump is Manual grouting pump, and the Faults in Tunnels simulation cavity is fabricated to circle by steel plate
Tubular construction, wall thickness 25mm, internal diameter 184mm and the high 400mm of the Faults in Tunnels simulation cavity, effective packed height are
380mm, is equipped with bearing plate in the cylindrical structure first end, top plate is equipped in the cylindrical structure second end, described
Top plate is equipped with grouting port, force transmission shaft is equipped in the cavity, in the lower end hydraulic jack of the force transmission shaft, in the biography
It is additionally provided with pressure sensor on power axis to the path of hydraulic jack, high-strength bolt, the height are additionally provided with around the cavity
Strong screw rod one end is fixed on the bearing plate, and the other end is fixed on the top plate；The high-strength bolt is steel structure connection
Performance rate is at 8.8 grades or more, and material used is low-carbon alloy steel or medium carbon steel and thermally treated, what the grade 8.8 referred to
Be shear stress be 8.8MPa.
The grouting pump is connect with the grouting port, is equipped with check valve in the grouting port, the grouting pump passes through described
Grouting port simulates Faults in Tunnels grouting and reinforcing environment to the chamber internal injection.
Preferably, the system also includes data processor, the pressure sensor is electrically connected with the data processor.
Preferably, image collecting device is additionally provided with above Faults in Tunnels simulation cavity.
The orthogonal experiment analysis method and experimental system of a kind of Faults in Tunnels mud grouting and reinforcing of the embodiment of the present invention, by adopting
With above-mentioned technical proposal, it is capable of the factor of analyzing influence fault gouge grouting consolidation effect, so as to instruct Faults in Tunnels to infuse
Slurry reinforces training works practice.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of Faults in Tunnels mud grouting and reinforcing orthogonal experiment analysis method flow diagram of the embodiment of the present invention；
Fig. 2 is electron-microscope scanning institutional framework schematic diagram before Faults in Tunnels mud grouting and reinforcing；
Fig. 3 is electron-microscope scanning institutional framework schematic diagram after Faults in Tunnels mud grouting and reinforcing；
Fig. 4 is one example structure schematic diagram of Faults in Tunnels mud grouting and reinforcing experimental system provided in this embodiment；
Fig. 5 is the top view of Fig. 4.
Specific embodiment
The embodiment of the present invention is described in detail with reference to the accompanying drawing.
It will be appreciated that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
Its embodiment, shall fall within the protection scope of the present invention.
Embodiment one
Referring to shown in Fig. 1, the embodiment of the present invention provides a kind of orthogonal experiment analysis method of Faults in Tunnels mud grouting and reinforcing
And experimental system, it is mainly used in the theory that fault gouge grouting and reinforcing factor is influenced present in coal mining, mining or tunnel excavation
In research, and Faults in Tunnels grouting and reinforcing training works is instructed to practice based on the analysis results.The Faults in Tunnels mud grouting and reinforcing
Orthogonal experiment analysis method comprising steps of
Choose three horizontal fault gouges by note medium simulation different porosities；
Make injecting paste material, including the first injecting paste material of production, the second injecting paste material and third injecting paste material；
First injecting paste material includes: 100 parts of cement, 3 parts of sodium bentonites, 1.3 parts of water-reducing agents；
Second injecting paste material includes: 60 parts of cement, 40 parts of flyash, 3 parts of sodium bentonites and 1.3 parts of water-reducing agents；
The third injecting paste material includes: 60 parts of cement, 25 parts of flyash, 15 parts of slags, 3 parts of sodium bentonites and 1.3
Part water-reducing agent；
By note medium to simulate three the first different Faults in Tunnels structural environments respectively quiet at room temperature by described
It sets 7 days；
Described three the first different tunnel construction environment are pressed at three respectively with 1000 universal testing machine of southern exposure GAW
Uniaxial compression test is carried out under power level；
Acquire first in the orthogonal experiment under corresponding three the first tunnel construction environment of three stress levels
Compression strength data；
Grouting pipe is inserted into the first Faults in Tunnels structural environment；
Above-mentioned three kinds of injecting paste materials are injected in Faults in Tunnels by the grouting pipe using grouting and reinforcing experimental system,
Grouting and reinforcing body is formed to the first Faults in Tunnels grouting and reinforcing, and stands 7 days at room temperature；
Above-mentioned uniaxial compression test is answered to different grouting and reinforcing weight, and is acquired corresponding in three stress levels
The second compression strength data in the orthogonal experiment of three grouting and reinforcing bodies；
- three slip casting of three stress levels is calculated separately out according to the first compression strength data and the second compression strength data
Material horizontal and three is by the mean compressive strength data before and after the grouting and reinforcing under note medium level orthogonal experiment；
According to the factor of the mean compressive strength data analyzing influence fault gouge grouting consolidation effect.
It does not consolidate or the pureed rock of weak consolidation, is developed in earth's crust shallow-layer brittle fault it is understood that fault gouge refers to
It is in various color stripes parallel faults face spread, bandwidth is by several millimeters to tens of rice, substantially without self-stable ability, Yi Fasheng in band
Gushing water, prominent mud geological hazards, the mud gushed out seriously hinder being normally carried out for constructing tunnel.The slip casting of fault gouge is added
The engineering practice stage is instructed by experience Gu usually also resting on, the grouting and reinforcing of few pairs of fault gouges carries out theoretical research.
In the present embodiment, it is to be understood that for the property of accurate study of fault mud itself, such as density, hole
The influence to grouting consolidation effect such as rate, it is described that mud undisturbed soil is gushed by note medium selection tunnel, with real simulation Faults in Tunnels mud
Character, have chosen in the present embodiment three it is horizontal by note medium, wherein three levels can be understood as three kinds of characters.Make
For an alternative embodiment, described by note medium dry density is 1.45g/cm3 (dense form), 1.21g/cm3 (in close type) and
Gush mud undisturbed soil, the fundamental property of the undisturbed soil in the tunnel of 1.07g/cm3 (loose type) are as follows: optimum moisture content 23.1%,
Maximum dry density is 1.7g/cm3, and liquid limit 48.3%, plastic limit is 25.6% and moulding index is 22.7%, wherein
Liquid limit is the upper limit moisture content that fine grained soil is in plastic state, and plastic limit is that fine grained soil is aqueous in the lower limit of plastic state
Rate；Plasticity index is to characterize a parameter of fine grained soil characteristic, plasticity index=liquid limit-plastic limit.
In the present embodiment, find when making injecting paste material: with the addition of water-reducing agent, the mobility of slurries will be increased
Greatly, therefore, it in order to determine best water-reducing agent additive amount, is obtained by experiment: when volume is less than 1%, slurry fluidity
It is very fast to increase rate, the larger value can be reached, continue growing volume, although mobility continues to increase, rate of change is smaller.This reality
It applies in example, according to the actual situation on the basis of water-reducing agent volume 1%, according to the effect of water-reducing agent, makes adjustment, select best
Volume 1.3%.
It is obtained by Experimental comparison: in above-mentioned three kinds of injecting paste materials after the water-reducing agent that above-mentioned volume is added, the stream of A slurries
Dynamic degree dramatically increases, and mobility significantly improves, and it is about 43%-45% or so that fluidity, which increases amplitude,.
In the present embodiment, as an alternative embodiment, shown three grouting pressure levels are respectively as follows: 2.5,2.0 and
1.5MPa。
In the present embodiment, using-three horizontal quadrature test analysis mathed of three factors, Faults in Tunnels mud grouting and reinforcing is divided
Analysis is capable of determining that the factor for influencing fault gouge grouting consolidation effect, thus in the engineering practice of tunnel mud grouting and reinforcing
The selection of grouting parameter provides important evidence, to instruct Faults in Tunnels grouting and reinforcing training works to practice.
In the present embodiment, as an alternative embodiment, described according to the first compression strength data and the second resistance to compression
Intensity data calculates separately out that three stress levels-three injecting paste material is horizontal and three are added by the slip casting under note medium level orthogonal experiment
Gu including: after the mean compressive strength data of front and back
Stress-strain curve is drawn according to the mean compressive strength data；
Grouting pressure value is determined according to the curve graph.
In the present embodiment, as another alternative embodiment, described anti-according to the first compression strength data and second
Compressive Strength data calculate separately out-three injecting paste material of three stress levels level and three by the slip casting under note medium level orthogonal experiment
It reinforces after the mean compressive strength data of front and back further include:
Draw orthogonal data computational chart；
The mean compressive strength data are imported into orthogonal data computational chart；
Calculate the different very poor values by under note medium, injecting paste material and grouting pressure level；
Grouting and reinforcing parameter is determined according to the very poor value.
It is understood that experimental performance index is mean compressive strength in the present embodiment, three factors are by note medium, note
Pulp material and grouting pressure, each factor are respectively three levels, and drawing orthogonal experiment data analysis Tables 1 and 2 according to this (needs
It is noted that, in order to compare the mean compressive strength before and after slip casting, the data analytical table is not by institute in the embodiment of the present invention
There are data to be all completely plotted in a table, but is separately plotted in Tables 1 and 2 two and opens in table, conventional orthogonal experiment number
The rightmost side one that mean compressive strength value is individually placed on table 1 as experimental performance index can be arranged according to analytical table, in addition, calculating
Range analysis parameter, such as IjEtc. can separately as row be plotted in table 1 together):
Table 1
Table 2
Complete orthogonal experiment data analytical table can be drawn out according to above-mentioned Tables 1 and 2, is then analyzed according to orthogonal experiment
Table carries out the range analysis of each influence factor, range analysis value result such as table 3:
| Ij | IIj | IIIj | Kj | Ij/Kj | IIj/Kj | IIIj/Kj | Very poor Dj |
| 1.44 | 1.69 | 2.6 | 3 | 0.48 | 0.56 | 0.87 | 0.31 |
| 1.69 | 1.73 | 1.84 | 3 | 0.56 | 0.58 | 0.61 | 0.13 |
| 2.37 | 2.08 | 0.96 | 3 | 0.79 | 0.69 | 0.32 | 0.55 |
Table 3
Wherein, Ij, IIj, IIIj are respectively jth column " 1 ", the number of test index corresponding to " 2 " and " 3 " level in table 3
The sum of value；Kj is the number that jth column same level occurs；Ij/Kj、IIj/KjAnd IIIj/KjRespectively jth column " 1 ", " 2 " and " 3 "
The average value of test index corresponding to level；DjFor jth column it is very poor,
It is now arranged in the case of third, it is as follows to carry out specific range analysis calculating:
III1=1-1+1-5+1-9=0.46+1.15+1.09=2.6；III2=1-3+1-4+1-8=0.61+0.27+
0.96=1.84；III3=0.37+0.27+0.32=0.96；K1=K2=K3=3；Remaining very poor parameter is according in above table
Formula and the calculation formula of Dj be calculated, specific calculating process that details are not described herein again.
It can analyze and obtain according to above-mentioned very poor value, slip casting factor arranges very poor value maximum, and the very poor value of injecting paste material is minimum, by
This, influence of the grouting pressure factor to grouting and reinforcing body uniaxial compressive strength is maximum, in specific construction practice, it should as master
Governing factor is wanted, secondly should consider to be infused medium, such as fault gouge is used as governing factor in slip casting, finally considers slip casting material
The selection of material.
In addition, being calculated according to the experimental result value in table 2, mean compressive strength is after dense form fault gouge is reinforced
0.48MPa promotes 181% compared to 0.17MPa before reinforcing；In close type fault gouge reinforce after mean compressive strength be 0.55MPa, phase
Than promoting 689% before reinforcing；Mean compressive strength is 0.79MPa after loose type fault gouge is reinforced, preceding compared to reinforcing to be promoted
2535%.It follows that fault gouge is looser before reinforcing, strength enhancing amplitude is bigger after slip casting.This is because loose type tomography
Mud porosity is larger, enters conducive to slurry infiltration interior；On the other hand, slurries splitting medium difficulty is lower, splits conducive to large scale is formed
Slurry arteries and veins is split, joint reinforcement fault gouge is acted on by slurry arteries and veins skeleton function and compacted medium, strength enhancing is significant.
It furthermore is mean compressive strength value in I 5, I 8 and I 9 times experiments it is found that grouting and reinforcing body is uniaxial from number
For compression strength in 1MPa or so, i.e., compression strength is relatively high, and corresponds to higher grouting pressure in this 3 groups of tests, is conducive to
Slurries infiltration, splitting and compacted fault gouge, therefore compressive property can be promoted.
Thus analysis will also realize that grouting pressure value is affected to grouting consolidation effect with by note medium density.
In the present embodiment, as another alternative embodiment, the method also includes: using scanning electron microscope to slip casting before and after
First tunnel construction tomography environment is scanned, and is obtained the first Faults in Tunnels structural environment and is amplified pattern；
It is observed according to the heterogeneous microstructure that the pattern reinforces front and back to the first Faults in Tunnels；
Grouting consolidation effect is evaluated according to the variation of the heterogeneous microstructure.
In the present embodiment, the fault gouge sample of ρ d=1.21g/cm3 and ρ the d=2.0MPa dry density of selection (is situated between by note
Matter), the cubical sample of side length 1cm is made, after electron microscope amplifies 1000 times, referring to shown in Fig. 2, before reinforcing, is broken
Layer mud section configuration is loose flocculent structure, is coupled between particle (10 μm of <) not close；Shown in referring to Fig. 3, after reinforcing, lead to
The compacted fault gouge of oversized dimensions slurry arteries and veins and slurry infiltration enter the synergy of hole, and the media particle of dispersion is glutinous to be polymerized to entirety,
Porosity is greatly reduced, and compactness significantly improves.
The orthogonal experiment analysis method provided according to embodiments of the present invention show that grouting pressure is the master for promoting consolidation effect
Control factor on the basis of fully considering stratum bearing capacity and equipment performance, can properly increase grouting pressure in mortar depositing construction,
Enhance slurries and cleave power, reinforcement effect is played to fault gouge preferably to penetrate into wall-rock crack.
Referring to shown in Fig. 4 and Fig. 5, the present embodiment additionally provides a kind of Faults in Tunnels mud grouting and reinforcing experimental system, is used for
In orthogonal experiment analysis method described in the various embodiments described above, comprising: grouting pump and Faults in Tunnels simulate cavity, the grouting pump
For Manual grouting pump, the Faults in Tunnels simulation cavity is fabricated to columnar structured, the Faults in Tunnels simulation cavity by steel plate
Wall thickness 25mm, internal diameter 184mm and high 400mm, effective packed height be 380mm, be equipped in the cylindrical structure first end
Bearing plate is equipped with top plate in the cylindrical structure second end, grouting port is equipped on the top plate, is equipped in the cavity
Force transmission shaft is additionally provided with pressure in the lower end hydraulic jack of the force transmission shaft on the path of the force transmission shaft to hydraulic jack
Force snesor is additionally provided with high-strength bolt around the cavity, and described high-strength bolt one end is fixed on the bearing plate, another
End is fixed on the top plate；The high-strength bolt is steel structure connection performance rate at 8.8 grades or more, and material used is low
Carbon alloy steel or medium carbon steel are simultaneously thermally treated, and the grade 8.8 refers to that shear stress is 8.8MPa；The force transmission shaft is used for
Joint test machine in uniaxial compression experiment.
The grouting pump is connect with the grouting port, is equipped with check valve in the grouting port, the grouting pump passes through described
Grouting port simulates Faults in Tunnels grouting and reinforcing environment to the chamber internal injection.
The experimental system provided in an embodiment of the present invention can simulate Faults in Tunnels grouting and reinforcing environment, in order to just
Hand over the smooth development of experiment.
As an alternative embodiment, the system also includes data processor, at the pressure sensor and the data
Manage device electrical connection.The pressure sensor is used to monitor the compression strength data in uniaxial compression experiment, and the data are passed
It is defeated to arrive the data processor, in order to analyze the data in orthogonal experiment.
As another alternative embodiment, it is additionally provided with image collecting device above Faults in Tunnels simulation cavity, is used for
The video or picture of slip casting process are shot, in order to carry out subsequent electron-microscope scanning analysis.
It is understood that described as far as possible under the premise of clearly disclosed for specification, it is concise.The present invention is each
The basic spirit of embodiment is consistent, and different in narration emphasis, scheme and scheme works are referred between each other,
This is just repeated no more.
It should be noted that, in this document, the term of the orientation or positional relationship of the instructions such as term " on ", "lower", is only
For the convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must have specific side
Position is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.Unless otherwise specific regulation and limit
Fixed, term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to detachably connect
It connects, or is integrally connected；It can be directly connected, it can also be indirectly connected through an intermediary.Such as, first and second grades
The relational terms of class are only used to distinguish one entity or operation from another entity or operation, and are not necessarily required
Or imply that there are any actual relationship or orders between these entities or operation.Moreover, term " includes ", " packet
Containing " or any other variant thereof is intended to cover non-exclusive inclusion, so that including the process of a series of elements, side
Method, article or equipment not only include those elements, but also including other elements that are not explicitly listed, or further include
For elements inherent to such a process, method, article, or device.In the absence of more restrictions, by sentence " including one
It is a ... " limit element, it is not excluded that there is also another in the process, method, article or apparatus that includes the element
Outer identical element.For the ordinary skill in the art, can be understood by concrete condition.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (8)
1. a kind of Faults in Tunnels mud grouting and reinforcing orthogonal experiment analysis method, which is characterized in that comprising steps of
Choose three horizontal fault gouges by note medium simulation different porosities；
Make injecting paste material, including the first injecting paste material of production, the second injecting paste material and third injecting paste material；
First injecting paste material includes: 100 parts of cement, 3 parts of sodium bentonites, 1.3 parts of water-reducing agents；
Second injecting paste material includes: 60 parts of cement, 40 parts of flyash, 3 parts of sodium bentonites and 1.3 parts of water-reducing agents；
The third injecting paste material includes: that 60 parts of cement, 25 parts of flyash, 15 parts of slags, 3 parts of sodium bentonites and 1.3 parts subtract
Aqua；
It three the first different Faults in Tunnels structural environments is simulated by note medium respectively stands 7 at room temperature by described
It；
With 1000 universal testing machine of southern exposure GAW to described three the first different tunnel construction environment respectively in three pressure water
Flat lower progress uniaxial compression test；
Acquire the first resistance to compression in the orthogonal experiment under corresponding three the first tunnel construction environment of three stress levels
Intensity data；
Grouting pipe is inserted into the first Faults in Tunnels structural environment；
Above-mentioned three kinds of injecting paste materials are injected in Faults in Tunnels by the grouting pipe using grouting and reinforcing experimental system, to the
One Faults in Tunnels grouting and reinforcing forms grouting and reinforcing body, and stands 7 days at room temperature；
Above-mentioned uniaxial compression test is answered to different grouting and reinforcing weight, and is acquired corresponding three in three stress levels
The second compression strength data in the orthogonal experiment of grouting and reinforcing body；
- three injecting paste material of three stress levels is calculated separately out according to the first compression strength data and the second compression strength data
Level and three is by the mean compressive strength data before and after the grouting and reinforcing under note medium level orthogonal experiment；
According to the factor of the mean compressive strength data analyzing influence fault gouge grouting consolidation effect.
2. Faults in Tunnels mud grouting and reinforcing orthogonal experiment analysis method according to claim 1, which is characterized in that described
Three stress levels, one or three injecting paste material water is calculated separately out according to the first compression strength data and the second compression strength data
It puts down and three is included: after the mean compressive strength data before and after the grouting and reinforcing under note medium level orthogonal experiment
Stress-strain curve is drawn according to the mean compressive strength data；
Grouting pressure value is determined according to the curve graph.
3. Faults in Tunnels mud grouting and reinforcing orthogonal experiment analysis method according to claim 1, which is characterized in that described
It is horizontal that-three injecting paste material of three stress levels is calculated separately out according to the first compression strength data and the second compression strength data
And three by after the mean compressive strength data before and after the grouting and reinforcing under note medium level orthogonal experiment further include:
Draw orthogonal data computational chart；
The mean compressive strength data are imported into orthogonal data computational chart；
Calculate the different very poor values by under note medium, injecting paste material and grouting pressure level；
Grouting and reinforcing parameter is determined according to the very poor value.
4. Faults in Tunnels mud grouting and reinforcing orthogonal experiment analysis method according to claim 1, which is characterized in that the quilt
Note medium is that the tunnel of 1.45g/cm3,1.21g/cm3 and 1.07g/cm3 gush mud undisturbed soil.
5. according to Faults in Tunnels mud grouting and reinforcing orthogonal experiment analysis method described in right 1, which is characterized in that the method is also
Include: to be scanned using scanning electron microscope to the first tunnel construction tomography environment before and after slip casting, obtains the first Faults in Tunnels structure
Make environment amplification pattern；
It is observed according to the heterogeneous microstructure that the pattern reinforces front and back to the first Faults in Tunnels；
Grouting consolidation effect is evaluated according to the variation of the heterogeneous microstructure.
6. a kind of Faults in Tunnels mud grouting and reinforcing experimental system characterized by comprising grouting pump and Faults in Tunnels simulate chamber
Body, the grouting pump are Manual grouting pump, and the Faults in Tunnels simulation cavity is fabricated to columnar structured, the tunnel by steel plate
Wall thickness 25mm, internal diameter 184mm and the high 400mm of fault simulation cavity, effective packed height is 380mm, in the cylinder knot
Structure first end is equipped with bearing plate, is equipped with top plate in the cylindrical structure second end, grouting port is equipped on the top plate, in institute
It states and is equipped with force transmission shaft in cavity, in the lower end hydraulic jack of the force transmission shaft, on the road of the force transmission shaft to hydraulic jack
It is additionally provided with pressure sensor on diameter, high-strength bolt is additionally provided with around the cavity, described high-strength bolt one end is fixed on described
On bearing plate, the other end is fixed on the top plate；
The grouting pump is connect with the grouting port, is equipped with check valve in the grouting port, the grouting pump passes through the slip casting
Mouth is to the chamber internal injection to simulate Faults in Tunnels grouting and reinforcing environment.
7. Faults in Tunnels mud grouting and reinforcing experimental system according to claim 6, which is characterized in that the system also includes
Data processor, the pressure sensor are electrically connected with the data processor.
8. Faults in Tunnels mud grouting and reinforcing experimental system according to claim 6 or 7, which is characterized in that in the tunnel
Image collecting device is additionally provided with above fault simulation cavity.
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| CN112363209A (en) * | 2020-11-09 | 2021-02-12 | 高军 | Three-dimensional digital fault detection method |
| CN112363209B (en) * | 2020-11-09 | 2023-07-25 | 高军 | Fault three-dimensional digital detection method |
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