CN110514811A - A kind of indoor simulation grouting and reinforcing experimental rig and method - Google Patents
A kind of indoor simulation grouting and reinforcing experimental rig and method Download PDFInfo
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- CN110514811A CN110514811A CN201910806116.7A CN201910806116A CN110514811A CN 110514811 A CN110514811 A CN 110514811A CN 201910806116 A CN201910806116 A CN 201910806116A CN 110514811 A CN110514811 A CN 110514811A
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Abstract
The invention discloses a kind of indoor simulation grouting and reinforcing experimental rig and method, experimental rig includes pressure-bearing platform, setting-out room, and pressure-bearing platform is set to the outside of setting-out room；Pressure-bearing platform includes disk on passive fastening pressure head, passive fastening pressure head lower wall, and setting-out room is set on passive fastening pressure head between disk and passive fastening pressure head lower wall；The application method of experimental rig completes the grouting and reinforcing of sample by multiple steps.Indoor simulation grouting and reinforcing experimental rig of the invention can carry out grouting and reinforcing to sample containing crack, be conducive to preferably carry out grouting and reinforcing mechanism analysis, carry out early-stage preparations to solve the practical problem in site operation；This experimental rig is designed using split cavity, and sampling is convenient, it can be achieved that whole fast demoulding after sample grouting and reinforcing；And experimental rig carries out grouting and reinforcing to sample using the method for " marginal not side pumping ", improves slip casting efficiency and slip casting effect.
Description
Technical field
The present invention relates to a kind of experimental rig and method more particularly to a kind of indoor simulation grouting and reinforcing experimental rig and sides
Method.
Background technique
In the construction of the underground engineering fields such as mine, tunnel, water conservancy, it is commonly encountered undesirable geologic body or fault belt,
Since hole, crack etc. are developed containing permeable structure, and it is mingled with the weak soft rock mass medium of a large amount of self-stable ability, rock mass is initially
Stress state easily changes under Engineering Disturbance, causes within the scope of certain depth country rock to occur rupturing and that crackle occurs is progressive
Extension is eventually exhibited as rock mass relaxation cracking, wall caving, plate and the country rock cracking destruction from outward appearance to inner essence such as splits, to induced water inrush, collapse
The engineering accidents such as side.In order to control certain depth range implosion country rock Disastrous years and fault activation caused by gushing water
The geological disasters such as landslide, the method in engineering generally using slip casting reinforce the rock mass of country rock or loose crushing.
Research grouting and reinforcing mechanism most effectual way is to carry out grouting and reinforcing laboratory test, and existing grouting and reinforcing is tested
Device is not suitable for carrying out grouting and reinforcing test to the standard sample of φ 50mm × 100mm, can not carry out grouting and reinforcing well
Mechanism analysis can not carry out early-stage preparations to solve the practical problem in site operation.
Summary of the invention
In order to solve shortcoming present in above-mentioned technology, the present invention provides a kind of tests of indoor simulation grouting and reinforcing
Device and method.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of indoor simulation grouting and reinforcing test
Device, including pressure-bearing platform, setting-out room, pressure-bearing platform are set to the outside of setting-out room；Pressure-bearing platform includes disk, quilt on passive fastening pressure head
Dynamic fastening pressure head lower wall, setting-out room are set on passive fastening pressure head between disk and passive fastening pressure head lower wall；
Setting-out room includes fastening support support, upper fastening end head, lower fastening end；Fastening support support is two, two
Fastening support support is opposite to be connected, and setting-out area is formed between two fastening support supports；Setting-out is placed with sample in area；Upper fastening
End, lower fastening end are respectively arranged at the upper end of sample, lower end, are provided in upper fastening end head and vacuumize conduit, vacuumize
The nozzle that vacuumizes of conduit is connected with vacuum pump；Grouting pipe, the slip casting nozzle of grouting pipe are provided in lower fastening end
It is connected with grouting pump；
Upper fastening end head is provided with flow deflector between lower fastening end and sample；Disk is set on passive fastening pressure head
The upper end of upper fastening end head, the passive lower end for fastening pressure head lower wall and being set to lower fastening end；Disk and quilt on passive fastening pressure head
Dynamic fastening pressure head lower wall is connected by high-strength bolt.
Further, flow deflector is rounded, and multiple through-holes are offered on flow deflector；One end that flow deflector is in contact with sample
For smooth flat, the other end of flow deflector offers cyclic annular cross recess.
Further, fastening support support is c-type mold section, is provided with fastening bolt at the opening of external wall of c-type mold section；Tightly
Fixing bolt be it is multiple, multiple fastening bolts up and down be alternatively arranged, for two c-type mold sections to be closed up fastening；The inner wall of c-type mold section
It is provided with c-type rubber sleeve, is fixed for sealing sample.
Further, upper fastening end head, lower fastening end are T-shaped.
Further, setting-out room is multiple, and multiple setting-out interventricular septums are set to disk and passive fastening on passive fastening pressure head
Between pressure head lower wall.
Further, the upper end of high-strength bolt is provided with reinforcing screw.
Further, grouting pump is Manual dual-liquid grouting pump.
A kind of the step of application method of indoor simulation grouting and reinforcing experimental rig are as follows:
Disk on passive fastening pressure head is removed first, the two fastening support supports to link together are opened, in lower fastening
One flow deflector of upper ends of end, then sample is placed on the flow deflector of lower fastening end upper end, in the upper end of sample
A flow deflector is placed, flow deflector is that its smooth flat is in contact with sample；Upper fastening end head is placed in sample upper end
On flow deflector, then two fastening support supports are closed up and fastened, makes the rubber sleave of sample Yu fastening support support inner wall
It fits closely；Then disk on passive fastening pressure head is covered, the reinforcing screw of high-strength bolt upper end is tightened；Finally starting grouting pump and
Vacuum pump carries out grouting and reinforcing to sample, and grouting pump injects slurries in sample from the lower end of sample, pumping of the slurries in vacuum pump
Slip casting is completed quickly through the crack of sample under power effect.
Indoor simulation grouting and reinforcing experimental rig of the invention can carry out grouting and reinforcing to sample containing crack, be conducive to more preferable
Ground carries out grouting and reinforcing mechanism analysis, carries out early-stage preparations to solve the practical problem in site operation；This experimental rig uses
Split cavity design, sampling are convenient, it can be achieved that whole fast demoulding after sample grouting and reinforcing；And experimental rig uses " marginal not
The method of side pumping " carries out grouting and reinforcing to sample, improves slip casting efficiency and slip casting effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of indoor simulation grouting and reinforcing experimental rig.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the partial enlarged view of setting-out room in Fig. 1.
Fig. 4 is the structural schematic diagram of upper fastening end head.
Fig. 5 is the structural schematic diagram of lower fastening end.
Fig. 6 is the structural schematic diagram of fastening support support.
Fig. 7 is the top view of Fig. 6.
Fig. 8 is the side view of Fig. 6.
Fig. 9 is the structural schematic diagram of flow deflector.
In figure: 1, passively fastening disk on pressure head；2, pressure head lower wall is passively fastened；3, screw is reinforced；4, nozzle is vacuumized；5,
Fasten steel ring；6, upper fastening end head；7, lower fastening end；8, fastening support support；9, sealing sleeve pipe；10, flow deflector；11, it tries
Sample；12, slip casting nozzle；13, high-strength bolt；14, lower fastening end；15, through-hole.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, a kind of indoor simulation grouting and reinforcing experimental rig, opens up the life of Pu'an company mainly for by France is top
The standard cylindrical sample of Φ 50mm × 100mm used in the ROCK series resultant stress multi- scenarios method triaxial tester of production and set
Meter, it can preferably be carried out for carrying out grouting and reinforcing to sample containing crack to carry out triaxial test again to slip casting sample
Grouting and reinforcing mechanism analysis carries out early-stage preparations to solve the practical problem in site operation.
Indoor simulation grouting and reinforcing experimental rig includes pressure-bearing platform, setting-out room, and pressure-bearing platform is set to the outside of setting-out room；It holds
It presents a theatrical performance as the last item on a programme including passively fastening disk 1 on pressure head, passive fastening pressure head lower wall 2, setting-out room is set to disk 1 and quilt on passive fastening pressure head
Between dynamic fastening pressure head lower wall 2；Setting-out room be it is multiple, the setting of multiple setting-out interventricular septums can simultaneously infuse multiple samples
Slurry improves test efficiency.
As shown in figure 3, setting-out room is designed using split cavity, setting-out room is made of two fastening support supports, two fastenings
The opposite connection of support carriers and between form setting-out area, two fastening support supports split can close up, and examination is placed in setting-out area
Sample 11, sample 11 are the fractured rock sample after resetting；As shown in figs 6-8, fastening support support 8 is c-type mold section, c-type mould
Fastening bolt 7 is provided at the opening of external wall of valve；Fastening bolt 7 be it is multiple, multiple fastening bolts up and down be alternatively arranged, for will
Two c-type mold sections close up fastening；The inner wall of c-type mold section is provided with c-type rubber sleeve, fixes for sealing sample 11, sealing effect
Fruit is good, it can be achieved that grouting, and the setting-out room sampling of split cavity design is convenient, it can be achieved that whole after sample grouting and reinforcing
Fast demoulding and interface sampling.
Setting-out room further includes 6, lower fastening end 14 of upper fastening end head, and upper fastening end head 6, lower fastening end 14 are respectively set
Upper end, lower end in sample 11, as shown in Figure 4,5, upper fastening end head 6, lower fastening end 14 are T-shaped；In upper fastening end head 6
It is provided with and vacuumizes conduit, the nozzle 4 that vacuumizes for vacuumizing conduit is connected with vacuum pump；Note is provided in lower fastening end 14
Conduit is starched, the slip casting nozzle 12 of grouting pipe is connected with grouting pump, and grouting pump is Manual dual-liquid grouting pump, is controlled by compression bar
Cylinder piston stretches to provide slip casting power, and adjustment cylinder piston stretching frequency can control the rate of slip casting.
Flow deflector 10 is provided between upper fastening end head 6, lower fastening end 14 and sample 11；Disk on passive fastening pressure head
1 is set to the upper end of fastening end head 6, the passive lower end for fastening pressure head lower wall 2 and being set to lower fastening end 14；Passive fastening pressure
Disk 1 is connected with passive fastening pressure head lower wall 2 by high-strength bolt 13 on head.The upper end of high-strength bolt 13 is provided with reinforcing screw
3, the distance of pressure-bearing platform in-between is adjusted by turning reinforcing screw 3.
As shown in figure 9, flow deflector 10 is rounded, multiple through-holes 15 are offered on flow deflector 10；Flow deflector 10 and sample 11
The one end being in contact is smooth flat, and the other end of flow deflector 10 offers cyclic annular cross recess.
A kind of the step of application method of indoor simulation grouting and reinforcing experimental rig are as follows:
Disk 1 on passive fastening pressure head is removed first, the two fastening support supports to link together are opened, in lower fastening
One flow deflector 10 of upper ends of end 14, then sample 11 is placed on the flow deflector of lower fastening end upper end, in sample
11 one flow deflector 10 of upper ends, flow deflector 10 are that its smooth flat is in contact with sample 11；Upper fastening end head 6 is put
It is placed on the flow deflector 10 of 11 upper end of sample, then two fastening support supports is closed up and fastened, make sample 11 and fastening branch
The rubber sleave of support support inner wall fits closely, and puts the connecing from sample 11 and fastening support support inner wall of slurries during only slip casting
Contacting surface flows through；Then disk 1 on passive fastening pressure head is covered, the reinforcing screw 3 of 13 upper end of high-strength bolt is tightened；Finally start slip casting
Pump and vacuum pump carry out grouting and reinforcing to sample 11, and experimental rig of the invention carries out sample using the method for " marginal not side pumping "
Grouting and reinforcing, for grouting pump by slurries out of the injection of the lower end of sample 11 sample 11, slurries are quick under the draft effect of vacuum pump
Slip casting is completed by the crack of sample 11, improves slip casting efficiency and slip casting effect.
Above embodiment is not limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the technical staff in domain is made within the scope of technical solution of the present invention, also belong to this hair
Bright protection scope.
Claims (8)
1. a kind of indoor simulation grouting and reinforcing experimental rig, it is characterised in that: including pressure-bearing platform, setting-out room, pressure-bearing platform is set to
The outside of setting-out room；The pressure-bearing platform includes disk (1), passive fastening pressure head lower wall (2), the setting of setting-out room on passive fastening pressure head
It is fastened on pressure head between disk (1) and passive fastening pressure head lower wall (2) in passive；
The setting-out room includes fastening support support (8), upper fastening end head (6), lower fastening end (14)；The fastening support branch
Seat (8) is two, and two fastening support supports are opposite to be connected, and setting-out area is formed between two fastening support supports；The setting-out
Sample (11) are placed in area；The upper fastening end head (6), lower fastening end (14) be respectively arranged at sample (11) upper end,
Lower end, interior be provided with of upper fastening end head (6) vacuumize conduit, and the nozzle (4) that vacuumizes for vacuumizing conduit is connected with vacuum pump；
It is provided with grouting pipe in the lower fastening end (14), the slip casting nozzle (12) of grouting pipe is connected with grouting pump；
Flow deflector (10) are provided between the upper fastening end head (6), lower fastening end (14) and sample (11)；It is described passive
Disk (1) is set to the upper end of fastening end head (6) on fastening pressure head, and passive fasten pressure head lower wall (2) are set to lower fastening end
(14) lower end；Disk (1) is connected with passive fastening pressure head lower wall (2) by high-strength bolt (13) on the passive fastening pressure head
It connects.
2. indoor simulation grouting and reinforcing experimental rig according to claim 1, it is characterised in that: the flow deflector (10) is in
Circle offers multiple through-holes (15) on flow deflector (10)；One end that the flow deflector (10) is in contact with sample (11) is light
Sliding plane, the other end of flow deflector (10) offer cyclic annular cross recess.
3. indoor simulation grouting and reinforcing experimental rig according to claim 1, it is characterised in that: the fastening support support
(8) it is c-type mold section, fastening bolt (7) is provided at the opening of external wall of c-type mold section；The fastening bolt (7) be it is multiple, it is more
A fastening bolt is alternatively arranged up and down, for two c-type mold sections to be closed up fastening；The inner wall of the c-type mold section is provided with c-type rubber
Gum cover is fixed for sealing sample (11).
4. indoor simulation grouting and reinforcing experimental rig according to claim 1, it is characterised in that: the upper fastening end head
(6), lower fastening end (14) is T-shaped.
5. indoor simulation grouting and reinforcing experimental rig according to claim 1, it is characterised in that: the setting-out room is more
A, multiple setting-out interventricular septums are set on passive fastening pressure head between disk (1) and passive fastening pressure head lower wall (2).
6. indoor simulation grouting and reinforcing experimental rig according to claim 1, it is characterised in that: the high-strength bolt (13)
Upper end be provided with reinforce screw (3).
7. indoor simulation grouting and reinforcing experimental rig according to claim 1, it is characterised in that: the grouting pump is manual
Double-liquid mud-injection pump.
8. a kind of application method of indoor simulation grouting and reinforcing experimental rig as claimed in claim 6, it is characterised in that: described
The step of method are as follows:
Disk on pressure head (1) will be passively fastened first to remove, and the two fastening support supports to link together be opened, in lower fastening end
One flow deflector (10) of upper ends of head (14), then sample (11) is placed on the flow deflector of lower fastening end upper end, In
One flow deflector (10) of upper ends of sample (11), flow deflector (10) are that its smooth flat is in contact with sample (11)；It will
Upper fastening end head (6) is placed on the flow deflector (10) of sample (11) upper end, then closes up two fastening support supports simultaneously tight
Gu fitting closely sample (11) and the rubber sleave of fastening support support inner wall；Then disk on passive fastening pressure head is covered
(1), the reinforcing screw (3) of high-strength bolt (13) upper end is tightened；Finally start grouting pump and vacuum pump infuses sample (11)
Slurry is reinforced, and for grouting pump by slurries out of the injection of the lower end of sample (11) sample (11), slurries are fast under the draft effect of vacuum pump
Speed completes slip casting by the crack of sample (11).
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| CN201910806116.7A CN110514811A (en) | 2019-08-29 | 2019-08-29 | A kind of indoor simulation grouting and reinforcing experimental rig and method |
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| CN201910806116.7A CN110514811A (en) | 2019-08-29 | 2019-08-29 | A kind of indoor simulation grouting and reinforcing experimental rig and method |
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