CN107796646A - Simulate the experimental rig and test method of deep-lying tunnel Blasting Excavation off-load - Google Patents
Simulate the experimental rig and test method of deep-lying tunnel Blasting Excavation off-load Download PDFInfo
- Publication number
- CN107796646A CN107796646A CN201711185372.6A CN201711185372A CN107796646A CN 107796646 A CN107796646 A CN 107796646A CN 201711185372 A CN201711185372 A CN 201711185372A CN 107796646 A CN107796646 A CN 107796646A
- Authority
- CN
- China
- Prior art keywords
- model
- tunnel
- blasting
- model sample
- sample
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses the experimental rig and test method of simulation deep-lying tunnel Blasting Excavation off-load, the device includes model support housing, model support inside casing, front side board, back side panel, model sample, bearing plate, hydraulic jack, high-pressure oil pump, pressure pipe, dynamic test analyzer, dynamic strain indicator, statical strain indicator, Blast Vibration Monitoring instrument, computer, velocity sensor, micro pressure box, resistance strain gage, wire, initiator, borehole, powder stick.Test method follows the steps below：Step 1: the making of model sample, Step 2: the installation of model sample, Step 3: the loading of model sample, Step 4: simulation Blasting Excavation and data acquisition, Step 5: Data Management Analysis.The present invention can preferably be reduced tunnel geological environment by certain likelihood ratio according to actual geologic information by Equivalent Materials Testing, have low, the easy to operate advantage of cost, and can reflect the universal law of failure and deformation of surrounding rocks.
Description
Technical field
The invention belongs to Underground Engineering Excavation technical field, is related to a kind of experiment for simulating deep-lying tunnel Blasting Excavation off-load
Device and test method.
Background technology
To meet needs that national economy grows continuously and fast, there is substantial amounts of underground rock project, such as traffic, ore deposit
Mountain, water power, subterranean laboratory etc..Tunnel as a kind of most important structure type of underground rock project, its surrounding rock failure mechanism,
Design of its support and stability analysis etc. are always the emphasis and difficult point studied.At present the excavation of tunnel mainly have TBM excavate and it is quick-fried
Digging two ways is broken, TBM, which is excavated, has the characteristics of mechanization degree is high, small to country rock disturbance, is a kind of more satisfactory open
Excavation formula, but because its cost is high and restricted to rock mass geology condition, for the rock mass that hardness is larger, TBM a rate of advance
Slowly, cutterhead serious wear, and it is difficult in adapt to complicated geological environment；And Blasting Excavation has that cost is low, operation is flexible, to various multiple
Miscellaneous geological conditions has well adapting to property, therefore the digging mode of explosion is still mainly used in a large amount of rock tunnels.And
Existing research shows that excavating off-load has material impact, especially deep high stress hard rock to the deformation and failure of Wall Rock of Tunnel
Tunnel, under the influence of blast disturbance and excavation off-load, substantial amounts of tensioning crack is developed inside country rock, and in heavily stressed effect
Lower finally to destroy, the plate cracking of such as gradation destroys and violent rock burst, have a strong impact on the Security Construction of tunnel engineering with
Long-time stability.Therefore, before tunnel carries out Blasting Excavation, physical model is built by physical simulation material, should to height
The surrounding rock failure of power deep-lying tunnel and deformation carry out simulated test, research blasting parameter, Blasting Excavation off-load and disturbance and high stress
To the Laws of Mechanics and mechanism of Wall Rock of Tunnel damaged deformation, the design of its support of tunnel engineering structure, safety evaluation and rock mass are moved
Have great importance in terms of power diaster prevention and control.
The deformation ＆ damage system of country rock is complicated after deep-lying tunnel Blasting Excavation, is difficult to ensure tunnel using the support pattern of routine
The stabilization in hole.Live prototype test cost is high, and experimental condition is restricted, complex operation, and Equivalent Materials Testing can basis
Actual geologic information is preferably reduced tunnel geological environment by certain likelihood ratio, low with cost, easy to operate, and can be reacted
Go out the universal law of failure and deformation of surrounding rocks, be a kind of effective and feasible test method.
The content of the invention
In order to achieve the above object, the present invention provides a kind of experimental rig for simulating deep-lying tunnel Blasting Excavation off-load and examination
Proved recipe method, solves in the prior art the problem of live prototype test cost height, experimental condition are restricted, complex operation.Pass through
Equivalent Materials Testing can preferably be reduced tunnel geological environment by certain likelihood ratio according to actual geologic information, have into
This low, easy to operate advantage, and the universal law of failure and deformation of surrounding rocks can be reflected.
The technical solution adopted in the present invention is that the model support of experimental rig is by model support housing and model support inside casing group
Into, model support inside casing is placed on model support chassis base platform, and the face of left and right three is provided with the square groove run through on model support inside casing,
Hydraulic jack telescopic end is connected by square groove with bearing plate, and jack stand is connected with model support housing, model support
Three faces of left and right are equipped with hydraulic jack on inside casing, and hydraulic jack is connected by pressure pipe with high-pressure oil pump, model support inside casing
Inside is provided with model sample, and four faces are equipped with bearing plate to model sample up and down, and bearing plate is provided with circular hole, model sample
Front and rear two sides is provided with front side board and back side panel, and front side board and back side panel are connected with model support inside casing, set inside model sample respectively
There are resistance strain gage and micro pressure box, wire passes through wire and static strain by the circular hole on bearing plate, micro pressure box
Instrument is connected, and resistance strain gage is connected by wire with statical strain indicator, and resistance strain gage is connected by wire with dynamic strain indicator,
Dynamic strain indicator is connected with dynamic test analyzer, and dynamic test analyzer and statical strain indicator are connected with computer respectively, front side
Plate surface is provided with velocity sensor, and velocity sensor is connected with Blast Vibration Monitoring instrument, and model sample is provided with borehole, and powder stick is put
Inside borehole, powder stick is connected by wire with initiator.
Further, the front side board and back side panel are bolted by square module forms.
Further, a tunnel with needing excavation simulation is respectively provided with the square module among the front side board and back side panel
The hole section size hole consistent with form.
Further, the equal row's hydraulic jack of spaced set three in three faces of left and right on the model support inside casing, often between row etc.
Away from three hydraulic jacks of setting.
Further, the corner of square module of the velocity sensor among front side board.
Another technical scheme of the present invention is to simulate the experiment of the experimental rig of deep-lying tunnel Blasting Excavation off-load
Method, follow the steps below：
Step 1: the making of model sample：The proportioning of analog material is determined according to the tunnel of testing program explosion, will be various
Material is put into mixer according to proportioning and stirred, then the mixing material after stirring is poured into preprepared sample
In mould, and micro pressure box and resistance strain gage are buried by the corresponding position of model sample in testing program；
Step 2: the installation of model sample：It will be taken out in the model sample from mould consolidated, load model support inside casing
In, and install bearing plate on four faces up and down in model sample, and make micro pressure box, resistance strain gage wire from
Passed in the circular hole reserved on bearing plate；Choose by the square module of suitable cross-section form and size be assembled into front side board and
Back side panel, and be bolted to connection with model support inside casing, restricted model sample front and rear sides face, recycle crane gear will
On the integral installation assembled to model support housing, make hydraulic jack piston on model support housing through model support inside casing with
Bearing plate contacts；Velocity sensor, velocity sensor are installed on the corner location of square module among front side board respectively
It is connected with Blast Vibration Monitoring instrument, is used to monitor blasting vibration signal using Blast Vibration Monitoring instrument, micro pressure box is passed through
Wire is connected with statical strain indicator, and it is situation of change to determine Wall Rock of Tunnel pressure in digging process；Resistance strain gage passes through wire
It is connected with dynamic strain indicator, dynamic strain indicator is connected with dynamic test analyzer, statical strain indicator and dynamic test analyzer point
It is not connected with computer；
Step 3: the loading of model sample：By controlling the switch of high-pressure oil pump, hydraulic oil is set to be noted respectively by pressure pipe
Enter inside hydraulic jack, hydraulic oil promotes the piston of hydraulic jack is protruding to touch bearing plate, and passes through bearing plate
Three faces in upper left and right of model sample are pressurizeed, model sample is finally loaded onto the pressure value needed for simulated test, enters
And complete the simulation of subterranean tunnel crustal stress；
Step 4: simulation Blasting Excavation and data acquisition：According to experimental design scheme, front side board is passed through using small-sized drill
Upper reserved hole correspondence position on model sample digs borehole, and powder stick is encased in each borehole, and to different type
Borehole (20) chooses the powder stick of suitable explosive payload, and charge constitution is designed according to all types of boreholes, and with stemming sealing of hole, then lead to
Cross wire to be connected each powder stick with initiator by the electric explosion network form of design, complete the powder charge process before Blasting Excavation, then
Open Blast Vibration Monitoring instrument power switch and open computer, two statical strain indicators, dynamic strain indicator and dynamic are tested
Analyzer switches on power and opened switch, ensure in blasting process can real-time data collection, treat that all monitoring devices prepare just
It is poor according to each borehole firing order and burst time in testing program after thread, ignite each borehole Chinese medicine successively using initiator
Volume, tunnel blasting digging process is simulated, then the repeatedly process such as blast hole drilling, powder charge, envelope blasthole, wiring and explosion, simulate tunnel
The process constantly pushed ahead；
Step 5: Data Management Analysis：The micro pressure box in model sample is connected statical strain indicator with pre-plugged, complete
Simulate the collection of tunnel peripheral rock stress data into blasting process, dynamic strain indicator and dynamic test analyzer by with it is pre-
First be embedded to model sample in resistance strain gage complete blasting process in country rock dynamic strain data collection, statical strain indicator with
It is embedded to the collection that the resistance strain gage in model sample completes country rock static strain data in blasting process, Blast Vibration Monitoring instrument
It is connected with the velocity sensor installed on front side board, to complete the collection of stress Blasting Vibration Signal in blasting process；Will be with
Stress, dynamic strain, static strain and the blasting vibration signal gathered during upper Blasting Excavation imports computer and carries out the later stage
Processing, and the destructive characteristics that Wall Rock of Tunnel is simulated after combination explosion are analyzed, and are studied blasting parameter, Blasting Excavation off-load and are disturbed
Dynamic and crustal stress is to tunnel Surrounding Rocks Deformation and the influence destroyed.
The beneficial effects of the invention are as follows：The tunnel blasting digging process of different geological conditions, different section form can be entered
Row simulation, by being embedded to sensor in model sample in advance, can automatic and real-time collection model sample Blasting Excavation when and open
The related data such as Wall Rock of Tunnel stress, strain, blasting vibration signal after digging, available for research blasting parameter, blast disturbance and unload
Lotus acts on and the factor such as crustal stress is to tunnel Surrounding Rocks Deformation and the influence destroyed, so disclose to a certain extent blasting parameter,
The influencing mechanism of country rock deformation and failure after the factor such as blast disturbance and Unloading Effect and crustal stress is excavated to tunnel blasting, for ground
The construction of lower actual tunnel engineering Blasting Excavation, blasting parameters optimization, tunnel layout design and stability analysis etc. are provided with
Benefit reference and guidance.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the present invention；
Fig. 2 is Fig. 1 A-A profiles；
Fig. 3 is that resistance strain gage and micro pressure box arrange schematic diagram.
In figure, 1. model support housings, 2. model support inside casings, 3. front side boards, 4. back side panels, 5. model samples, 6. bearing plates,
7. hydraulic jack, 8. high-pressure oil pumps, 9. pressure pipes, 10. dynamic test analyzers, 11. dynamic strain indicators, 12. static strains
Instrument, 13. Blast Vibration Monitoring instrument, 14. computers, 15. velocity sensors, 16. micro pressure boxes, 17. resistance strain gages, 18. lead
Line, 19. initiators, 20. boreholes, 21. powder sticks.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
As Figure 1-3, model support is made up of the structure of experimental rig of the present invention model support housing 1 and model support inside casing 2,
Model support inside casing 2 is placed on the base platform of model support housing 1, and the face of left and right three is provided with the square groove run through on model support inside casing 2,
The telescopic end of hydraulic jack 7 is connected by square groove with bearing plate 6, and the base of hydraulic jack 7 is connected with model support housing 1, mould
Three faces of left and right are equipped with hydraulic jack 7 on type frame inside casing 2, and hydraulic jack 7 is connected by pressure pipe 9 with high-pressure oil pump 8, mould
The inside of type frame inside casing 2 is provided with model sample 5, and four faces are equipped with bearing plate 6 to model sample 5 up and down, and bearing plate 6 is provided with
Circular hole, two sides is provided with front side board 3 and back side panel 4 before and after model sample 5, front side board 3 and back side panel 4 respectively with model support inside casing 2
It is connected, the inside of model sample 5 is provided with resistance strain gage 17 and micro pressure box 16, and wire 18 is micro- by the circular hole on bearing plate 6
Type pressure cell 16 is connected by wire 18 with statical strain indicator 12, and resistance strain gage 17 is connected by wire 18 and statical strain indicator 12
Connect, resistance strain gage 17 is connected by wire 18 with dynamic strain indicator 11, and dynamic strain indicator 11 connects with dynamic test analyzer 10
Connect, dynamic test analyzer 10 and statical strain indicator 12 are connected with computer 14 respectively, and the surface of front side board 3 is provided with velocity sensor
15, velocity sensor 15 is connected with Blast Vibration Monitoring instrument 13, and model sample 5 is provided with borehole 20, and powder stick 21 is placed in borehole 20
Inside, powder stick 21 are connected by wire 18 with initiator 19.
Front side board 3 and back side panel 4 are bolted by square module and formed, and are connected with model support inside casing 2 by bolt
Connect, for preventing the front and back sides of model sample 5 from avalanche occurs when the deformation of the front-back both sides of limited model sample 5 and Blasting Excavation.
The corner of square module among front side board 3 is equipped with the square module of velocity sensor 15, front side board 3 and the centre of back side panel 4
On be respectively provided with a tunnel section size with needing excavation simulation and the consistent hole of form, the brill big gun excavated for tunnel blasting
Eye 20, powder charge are rolled up 21 and slagged tap, and can be chosen according to the tunnel section size and dimension of experimental design have identical size and shape
The square module of shape hole, to realize the tunnel blasting Excavation simulation of different section size and dimension.
High-pressure oil pump 8, pressure pipe 9, hydraulic jack 7, bearing plate 6 form the hydraulic loading system of the present apparatus, hydraulic pressure thousand
The preferred model QF1000T-20b on jin top 7, there is the characteristics of stroke is big, and tonnage is big；The effect of hydraulic jack 7 is to mould
Type sample 5 is loaded, and simulates the ground stress environment residing for subterranean tunnel.High-pressure oil pump 8 passes through pressure pipe 9 and hydraulic jack
7 are connected, and the hydraulic oil in high-pressure oil pump 8 is injected into inside hydraulic jack 7 via pressure pipe 9, promote the work of hydraulic jack 7
Plug motion.The base of hydraulic jack 7 is connected with model support housing 1 by ring flange, and the piston of hydraulic jack 7 is passed through in model support
Frame 2 contacts with being close to the bearing plate 6 of model sample 5, the equal row's hydraulic jack of spaced set three in three faces of left and right on model support inside casing 2
Top 7, three hydraulic jacks 7 of spaced set are often arranged, the distance that hydraulic jack 7 is set is relevant with model sample 5, hydraulic pressure thousand
Jin top 7 applies pressure by bearing plate 6 to the face of left and right three on model sample 5.Pass through the hydraulic jack on upside, left side and right side
Push up 7 pairs of model samples about 5 (Z-direction) and or so (Y-direction) both direction load, and on front side of another direction then passes through
Deformation on plate 3 and the fore-and-aft direction of 4 limited model sample of back side panel 5, makes it be changed into plane strain problems, and plane problem is asked
Solve more convenient；The present invention is first to load to carry out Blasting Excavation afterwards, though underground three can more really be simulated using true triaxial loading
Ambient stress is tieed up, but can to simulate blasthole drilling 20 in explosion bad digging process, powder charge volume 21, slag tap and velocity sensor 15
The increase of the operation difficulties such as installation, can also have an impact to the accuracy of result of the test；The purpose of the three-dimensional loading of true triaxial is to make mould
The ambient stress for intending experiment is loaded closer to subterranean tunnel three-dimensional force environment, the present invention using hydraulic jack 7 so that
Process operations and the monitoring device installation of digging process are more convenient and simple, improve analog reslt precision.
Micro pressure box 16, resistance strain gage 17, statical strain indicator 12, dynamic strain indicator 11, dynamic test analyzer 10,
Blast Vibration Monitoring instrument 13, velocity sensor 15, wire 18, computer 14 form the data collecting system of the present apparatus.Dynamic strain
Instrument 11 is connected composition dynamic strain measuring system with dynamic test analyzer 10, and micro pressure box 16, resistance strain gage 17 are in structure
Be embedded to when building model in model sample 5, by wire 18 by micro pressure box 16, resistance strain gage 17 respectively with statical strain indicator
12nd, dynamic strain indicator connection 11, static strain, dynamic strain and pressure value, velocity sensor 15 are gathered in real time and is located at front side board 3
The corner of middle square module, vibration effect of explosion when measure tunnel blasting excavates, and pass through Blast Vibration Monitoring instrument 13
Real-time sampling is carried out to blasting vibration signal, and monitoring in real time and the processing of data are carried out using computer 14.
The preferred model AFT-0957A of dynamic strain indicator 11, energy automatic balancing circuit, stability is good, high sensitivity；It is static
The preferred model AFT-CM-32 of deformeter 12, foil gauge resistance accommodation is big, with non-linear zero offset capability and quickly
The advantages of autobalance, it is convenient for single armed, half-bridge, full bridge measurement；The preferred model BOX-8016 of Blast Vibration Monitoring instrument 13,
Can Real Time Observation measured data signal, battery life length is and simple to operate；The preferred model TP3V- of velocity sensor 15
4.5, horizontal X can be measured simultaneously to, horizontal Y-direction and vertical Z to the speed in three directions, have small volume, measurement accuracy it is high,
Anti-interference strong feature；The preferred model HZY-60 of micro pressure box 16, there are ultra-thin, small volume, stability good, good airproof performance excellent
Point.
Initiator 19, powder stick 21 form the blasting system of the present apparatus, and initiator 19 is connected with powder stick 21 in borehole 20, passed through
Initiator 19 controls the ignition of powder stick 21, simulates the blasting process of tunnel.The preferred model MFd-50 of initiator 19, using list
Piece machine controls, high brightness numeral method, has digital display eye-catching directly perceived, and machine volume is small, in light weight, it is easy to operate the advantages of.
Embodiment
A kind of a kind of simulation deep-lying tunnel Blasting Excavation of test method application for simulating deep-lying tunnel Blasting Excavation off-load is unloaded
The experimental rig of lotus, according to tests below step：
Step 1: the making of model sample 5：The proportioning of analog material is determined according to the tunnel of testing program explosion, will be each
Kind material is put into mixer according to proportioning to be stirred, then the mixing material after stirring is poured into preprepared examination
In original mold tool, and micro pressure box 16 and resistance strain gage 17 are buried by 5 corresponding position of model sample in testing program；
Step 2: the installation of model sample 5：The model sample 5 consolidated is removed from the molds, loads model support inside casing
In 2, and bearing plate 6 is installed on four faces up and down in model sample 5, and make micro pressure box 16, resistance strain gage 17
Wire 18 from bearing plate 6 reserve circular hole in pass；Choose by suitable cross-section form and the square module group of size
Front side board 3 and back side panel 4 are dressed up, and is bolted to connection with model support inside casing 2, the front and rear sides face of restricted model sample 5,
Crane gear is recycled to make the hydraulic jack 7 on model support housing 1 by the integral installation assembled to model support housing 1
Piston contacts through model support inside casing 2 with bearing plate 6；Installed respectively on the corner location of square module among front side board 3
Good velocity sensor 15, velocity sensor 15 are connected with Blast Vibration Monitoring instrument 13, are used to supervise using Blast Vibration Monitoring instrument 13
Blasting vibration signal is surveyed, micro pressure box 16 is connected by wire 18 with statical strain indicator 12, determines tunnel in digging process
Hole country rock pressure is situation of change；Resistance strain gage 17 is connected by wire 18 with dynamic strain indicator 11, and dynamic strain indicator 11 is with moving
State measuring and analysing meter 10 is connected, and statical strain indicator 12 and dynamic test analyzer 10 are connected with computer 14 respectively；
Step 3: the loading of model sample 5：By controlling the switch of high-pressure oil pump 8, hydraulic oil is set to divide by pressure pipe 9
Zhu Ru not be inside hydraulic jack 7, hydraulic oil promotes the piston of hydraulic jack 7 is protruding to touch bearing plate 6, and passes through
Bearing plate 6 pressurizes to three faces in upper left and right of model sample 5, model sample 5 is finally loaded onto needed for simulated test
Pressure value, and then complete the simulation of subterranean tunnel crustal stress；
Step 4: simulation Blasting Excavation and data acquisition：According to experimental design scheme, front side board is passed through using small-sized drill
The hole reserved on 3 correspondence position on model sample 5 digs borehole 20 (snubber, reliever and periphery hole), by powder stick 21
It is encased in each borehole 20, and the powder stick 21 of suitable explosive payload is chosen to different type borehole 20, enters according to all types of boreholes
Row design charge constitution, and use stemming sealing of hole, then by wire 18 by each powder stick 21 by design electric explosion network form with detonate
Device 19 connects, and completes the powder charge process before Blasting Excavation, then turns on the power switch of Blast Vibration Monitoring instrument 13 and open computer
14, two statical strain indicators 12, dynamic strain indicator 11 and dynamic test analyzer 10 are switched on power and opened switch, is ensured
Can real-time data collection in blasting process.After treating that all monitoring devices are ready, according to each borehole 20 in testing program
Firing order and burst time are poor, ignite powder stick 21 in each borehole 20 successively using initiator 19, simulation tunnel blasting excavated
Journey.Then the processes such as blast hole drilling 21, powder charge, envelope blasthole, wiring and explosion, the process that simulation tunnel is constantly pushed ahead are repeated；
Step 5: Data Management Analysis：The micro pressure box 16 in model sample 5 connects statical strain indicator 12 with pre-plugged
Connect, complete to simulate the collection of tunnel peripheral rock stress data, dynamic strain indicator 11 and dynamic test analyzer in blasting process
10 with the resistance strain gage 17 in embedment model sample 5 in advance by completing adopting for country rock dynamic strain data in blasting process
Collection, statical strain indicator 12 complete country rock static strain data in blasting process with the resistance strain gage 17 in embedment model sample 5
Collection, Blast Vibration Monitoring instrument 13 is connected with the velocity sensor 15 installed on front side board 3, to complete should in blasting process
The collection of power Blasting Vibration Signal；Stress, dynamic strain, static strain and the explosion that will be gathered during above Blasting Excavation
Vibration signal imports computer 14 and carries out post-processing, and the destructive characteristics that Wall Rock of Tunnel is simulated after combination explosion are analyzed, and are ground
Blasting parameter (such as shot hole parameters, data of explosive filled, explosive parameters), Blasting Excavation off-load and disturbance and crustal stress are studied carefully to Wall Rock of Tunnel
The influence of deformation and failure.
Fracture morphology of the present invention first according to needed for the geological conditions and tunnel to be exploited, make the similar model of property
Sample 5, then model sample 5 is arranged in the present apparatus, then model sample 5 loaded, answered simulation subterranean tunnel
Force environment, simulation Blasting Excavation is carried out to model sample 5 according to test method in next step, finally, Blasting Excavation process adopted
The data of collection are handled, and can be directed to different geological conditions herein and the tunnel blasting digging process of different section form is carried out
Simulation, pass through stress, strain, explosion during 15 automatic data collection model 5 explosion of sample of velocity sensor embedded in model sample 5
The related datas such as vibration signal, the present invention are the factor such as research blasting parameter, blast disturbance and Unloading Effect and crustal stress to tunnel
Hole surrouding rock deformation and the influence destroyed provide a kind of experimental rig and test method.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.
Each embodiment in this specification is described by the way of related, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (6)
1. simulate the experimental rig of deep-lying tunnel Blasting Excavation off-load, it is characterised in that the model support of experimental rig is by model support
Housing (1) and model support inside casing (2) composition, model support inside casing (2) is placed on model support housing (1) base platform, in model support
The face of left and right three is provided with the square groove run through on frame (2), and hydraulic jack (7) telescopic end passes through square groove and bearing plate (6) phase
Even, hydraulic jack (7) base is connected with model support housing (1), and three faces of left and right are equipped with hydraulic jack on model support inside casing (2)
Push up (7), hydraulic jack (7) is connected by pressure pipe (9) with high-pressure oil pump (8), and model is provided with inside model support inside casing (2) and is tried
Sample (5), four faces are equipped with bearing plate (6) to model sample (5) up and down, and bearing plate (6) is provided with circular hole, model sample
(5) two sides is provided with front side board (3) and back side panel (4) before and after, front side board (3) and back side panel (4) respectively with model support inside casing (2) phase
Even, resistance strain gage (17) and micro pressure box (16) are provided with inside model sample (5), wire (18) passes through on bearing plate (6)
Circular hole, micro pressure box (16) is connected by wire (18) with statical strain indicator (12), and resistance strain gage (17) passes through wire
(18) it is connected with statical strain indicator (12), resistance strain gage (17) is connected by wire (18) with dynamic strain indicator (11), dynamic
Deformeter (11) is connected with dynamic test analyzer (10), dynamic test analyzer (10) and statical strain indicator (12) respectively with electricity
Brain (14) is connected, and front side board (3) surface is provided with velocity sensor (15), velocity sensor (15) and Blast Vibration Monitoring instrument (13)
It is connected, model sample (5) is provided with borehole (20), and powder stick (21) is placed in borehole (20) inside, and powder stick (21) passes through wire (18)
It is connected with initiator (19).
2. the experimental rig of simulation deep-lying tunnel Blasting Excavation off-load according to claim 1, it is characterised in that before described
Side plate (3) and back side panel (4) are bolted by square module and formed.
3. the experimental rig of simulation deep-lying tunnel Blasting Excavation off-load according to claim 2, it is characterised in that before described
A tunnel section size and form with needing excavation simulation is respectively provided with square module among side plate (3) and back side panel (4)
Consistent hole.
4. the experimental rig of simulation deep-lying tunnel Blasting Excavation off-load according to claim 1, it is characterised in that the mould
The equal row's hydraulic jack (7) of spaced set three in three faces of left and right on type frame inside casing (2), often arranges three hydraulic jacks of spaced set
Push up (7).
5. the experimental rig of simulation deep-lying tunnel Blasting Excavation off-load according to claim 1, it is characterised in that the speed
Spend the corner of square module of the sensor (15) among front side board (3).
6. a kind of test method of the experimental rig of simulation deep-lying tunnel Blasting Excavation off-load as described in claim 1-5, its
It is characterised by, follows the steps below：
Step 1: the making of model sample (5)：The proportioning of analog material is determined according to the tunnel of testing program explosion, will be various
Material is put into mixer according to proportioning and stirred, then the mixing material after stirring is poured into preprepared sample
In mould, and micro pressure box (16) and resistance strain gage (17) are buried by the corresponding position of model sample (5) in testing program；
Step 2: the installation of model sample (5)：The model sample (5) consolidated is removed from the molds, loads model support inside casing
(2) in, and bearing plate (6) is installed on four faces up and down in model sample (5), and makes micro pressure box (16), resistance
Passed in the circular hole that the wire (18) of foil gauge (17) is reserved from bearing plate (6)；Choose big by suitable cross-section form and size
Small square module is assembled into front side board (3) and back side panel (4), and is bolted to connection with model support inside casing (2), constraint
Model sample (5) front and rear sides face, crane gear is recycled to make mould by the integral installation assembled to model support housing (1)
Hydraulic jack (7) piston on type frame housing (1) contacts through model support inside casing (2) with bearing plate (6)；In front side board (3)
Velocity sensor (15) is installed on the corner location of middle square module respectively, velocity sensor (15) is supervised with blasting vibration
Instrument (13) connection is surveyed, is used to monitor blasting vibration signal using Blast Vibration Monitoring instrument (13), micro pressure box (16) is passed through
Wire (18) is connected with statical strain indicator (12), and it is situation of change to determine Wall Rock of Tunnel pressure in digging process；Resistance strain gage
(17) it is connected by wire (18) with dynamic strain indicator (11), dynamic strain indicator (11) is connected with dynamic test analyzer (10),
Statical strain indicator (12) and dynamic test analyzer (10) are connected with computer (14) respectively；
Step 3: the loading of model sample (5)：By controlling the switch of high-pressure oil pump (8), hydraulic oil is set to pass through pressure pipe (9)
Hydraulic jack (7) inside is injected separately into, hydraulic oil promotes the piston of hydraulic jack (7) is protruding to touch bearing plate
(6), and by bearing plate (6) to three faces in upper left and right of model sample (5) pressurize, model sample (5) is finally loaded
To the pressure value needed for simulated test, and then complete the simulation of subterranean tunnel crustal stress；
Step 4: simulation Blasting Excavation and data acquisition：According to experimental design scheme, front side board (3) is passed through using small-sized drill
Upper reserved hole correspondence position on model sample (5) digs borehole (20), and powder stick (21) is encased in into each borehole (20)
It is interior, and the powder stick (21) of suitable explosive payload is chosen to different type borehole (20), it is designed powder charge knot according to all types of boreholes
Structure, and with stemming sealing of hole, then by wire (18) by each powder stick (21) by the electric explosion network form of design with initiator (19) even
Connect, complete the powder charge process before Blasting Excavation, then turn on Blast Vibration Monitoring instrument (13) power switch and open computer (14),
Two statical strain indicators (12), dynamic strain indicator (11) and dynamic test analyzer (10) are switched on power and opened switch,
Ensure the energy real-time data collection in blasting process, after treating that all monitoring devices are ready, according to each big gun in testing program
Eye (20) firing order and burst time are poor, ignite powder stick (21) in each borehole (20) successively using initiator (19), simulate tunnel
Hole Blasting Excavation process, the then repeatedly process such as blast hole drilling (20), powder charge, envelope blasthole, wiring and explosion, simulation tunnel constantly to
The process of preceding propulsion；
Step 5: Data Management Analysis：Statical strain indicator (12) and pre-plugged micro pressure box (16) in model sample (5)
Connection, complete to simulate the collection of tunnel peripheral rock stress data, dynamic strain indicator (11) and dynamic test point in blasting process
Analyzer (10) with the resistance strain gage (17) in embedment model sample (5) in advance by completing country rock dynamic strain in blasting process
The collection of data, statical strain indicator (12) are completed to enclose in blasting process with the resistance strain gage (17) in embedment model sample (5)
The collection of rock static strain data, Blast Vibration Monitoring instrument (13) are connected with the velocity sensor (15) installed on front side board (3),
To complete the collection of stress Blasting Vibration Signal in blasting process；By the stress gathered during above Blasting Excavation, dynamic
Strain, static strain and blasting vibration signal import computer (14) and carry out post-processing, and simulation tunnel encloses after combination explosion
The destructive characteristics of rock are analyzed, research blasting parameter, Blasting Excavation off-load and disturbance and crustal stress to tunnel Surrounding Rocks Deformation and
The influence of destruction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711185372.6A CN107796646B (en) | 2017-11-23 | 2017-11-23 | Test device and test method for simulating blasting excavation unloading of deep-buried tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711185372.6A CN107796646B (en) | 2017-11-23 | 2017-11-23 | Test device and test method for simulating blasting excavation unloading of deep-buried tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107796646A true CN107796646A (en) | 2018-03-13 |
| CN107796646B CN107796646B (en) | 2023-06-23 |
Family
ID=61535687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711185372.6A Active CN107796646B (en) | 2017-11-23 | 2017-11-23 | Test device and test method for simulating blasting excavation unloading of deep-buried tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107796646B (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535126A (en) * | 2018-05-07 | 2018-09-14 | 洛阳理工学院 | A kind of test model and test method of simulation deep tunnel Blasting Excavation |
| CN108709977A (en) * | 2018-07-19 | 2018-10-26 | 浙江大学城市学院 | A kind of ground preloading influences the indoor model test device and test method of existing subway tunnel |
| CN109030224A (en) * | 2018-06-01 | 2018-12-18 | 山东科技大学 | A kind of system and method that simulation tunnel promotes off-load |
| CN109297880A (en) * | 2018-10-11 | 2019-02-01 | 中国电建集团华东勘测设计研究院有限公司 | Buried hydraulic tunnel osmotic gradient simulation experiment system and test method |
| CN109406281A (en) * | 2018-12-11 | 2019-03-01 | 中国矿业大学(北京) | A kind of tunnel butterfly destruction area similarity simulation experiment platform and experimental method |
| CN109545069A (en) * | 2018-11-30 | 2019-03-29 | 辽宁工程技术大学 | A kind of experimental provision and application method for simulating building on goaf differential settlement |
| CN109883470A (en) * | 2019-01-18 | 2019-06-14 | 北京工业大学 | Cutter head of shield machine condition monitoring system and method |
| CN110530743A (en) * | 2019-08-28 | 2019-12-03 | 西安近代化学研究所 | A kind of ammunition induced detonation high speed fragments protection effect analogue experiment method |
| CN110749721A (en) * | 2019-09-28 | 2020-02-04 | 同济大学 | Tunnel model test platform considering complex loading and unloading working conditions |
| CN110887743A (en) * | 2019-11-14 | 2020-03-17 | 宁波大学 | Method for applying blasting dynamic load in shear test of large-size rock mass anchoring structural plane |
| CN111044362A (en) * | 2019-12-05 | 2020-04-21 | 武汉理工大学 | Transient unloading device and rock mass transient unloading simulation test system |
| CN111912377A (en) * | 2020-06-24 | 2020-11-10 | 湘潭大学 | Method, system and equipment for acquiring similar experimental rock deformation monitoring data |
| CN113917108A (en) * | 2021-09-07 | 2022-01-11 | 三峡大学 | Model test device for simulating high and steep slope excavation unloading and displacement monitoring method |
| CN115030235A (en) * | 2022-04-08 | 2022-09-09 | 中国地质大学（武汉） | Model test device for researching failure of pile foundation under blasting effect |
| CN115112479A (en) * | 2022-07-13 | 2022-09-27 | 东北大学 | Method for reconstructing local high-stress environment inside large deep three-dimensional physical model |
| CN115290474A (en) * | 2022-08-02 | 2022-11-04 | 天津大学 | Tunnel group drilling and blasting excavation experimental device and method under plane stress |
| CN116183668A (en) * | 2022-12-28 | 2023-05-30 | 中国矿业大学 | System and method for testing super-dynamic blasting parameters under confining pressure condition |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100805184B1 (en) * | 2006-10-25 | 2008-02-21 | 코오롱건설주식회사 | Method for concrete lining quality evaluating according to concussion blasting excavation in tunnel |
| CA2733120A1 (en) * | 2010-02-25 | 2011-08-25 | Maf Agrobotic | Device for processing products such as fruits or vegetables using a cleaning trolley as well as the cleaning method |
| CN102662041A (en) * | 2012-05-07 | 2012-09-12 | 中国科学院武汉岩土力学研究所 | Vibration simulation system for model experiments |
| CN104614242A (en) * | 2015-02-01 | 2015-05-13 | 东华理工大学 | Excavation and surrounding rock stress and strain monitoring model testing device for rock-soil chamber under complicated conditions, and method thereof |
| CN105458082A (en) * | 2014-08-21 | 2016-04-06 | 福特环球技术公司 | Method for opening forming on panel, stamping die and vehicle decorative plate |
| CN205690998U (en) * | 2016-04-25 | 2016-11-16 | 中国科学院武汉岩土力学研究所 | Simulation tunnel drilling and blasting method excavation bores big gun hole and powder charge integrated apparatus |
| CN106198235A (en) * | 2016-08-25 | 2016-12-07 | 安徽理工大学 | Blasting simulation test device and method based on geomechanical model test |
| CN106525570A (en) * | 2017-01-12 | 2017-03-22 | 大连交通大学 | Testing device and method for simulating influence of tunnel blasting excavation on surrounding pipelines |
| CN207487990U (en) * | 2017-11-23 | 2018-06-12 | 中南大学 | Simulate the experimental rig of deep-lying tunnel Blasting Excavation off-load |
-
2017
- 2017-11-23 CN CN201711185372.6A patent/CN107796646B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100805184B1 (en) * | 2006-10-25 | 2008-02-21 | 코오롱건설주식회사 | Method for concrete lining quality evaluating according to concussion blasting excavation in tunnel |
| CA2733120A1 (en) * | 2010-02-25 | 2011-08-25 | Maf Agrobotic | Device for processing products such as fruits or vegetables using a cleaning trolley as well as the cleaning method |
| CN102662041A (en) * | 2012-05-07 | 2012-09-12 | 中国科学院武汉岩土力学研究所 | Vibration simulation system for model experiments |
| CN105458082A (en) * | 2014-08-21 | 2016-04-06 | 福特环球技术公司 | Method for opening forming on panel, stamping die and vehicle decorative plate |
| CN104614242A (en) * | 2015-02-01 | 2015-05-13 | 东华理工大学 | Excavation and surrounding rock stress and strain monitoring model testing device for rock-soil chamber under complicated conditions, and method thereof |
| CN205690998U (en) * | 2016-04-25 | 2016-11-16 | 中国科学院武汉岩土力学研究所 | Simulation tunnel drilling and blasting method excavation bores big gun hole and powder charge integrated apparatus |
| CN106198235A (en) * | 2016-08-25 | 2016-12-07 | 安徽理工大学 | Blasting simulation test device and method based on geomechanical model test |
| CN106525570A (en) * | 2017-01-12 | 2017-03-22 | 大连交通大学 | Testing device and method for simulating influence of tunnel blasting excavation on surrounding pipelines |
| CN207487990U (en) * | 2017-11-23 | 2018-06-12 | 中南大学 | Simulate the experimental rig of deep-lying tunnel Blasting Excavation off-load |
Non-Patent Citations (1)
| Title |
|---|
| 刘亮亮: "循环爆破荷载下围岩损伤的试验研究与理论分析", 《工程科技Ⅱ辑》 * |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535126A (en) * | 2018-05-07 | 2018-09-14 | 洛阳理工学院 | A kind of test model and test method of simulation deep tunnel Blasting Excavation |
| CN109030224A (en) * | 2018-06-01 | 2018-12-18 | 山东科技大学 | A kind of system and method that simulation tunnel promotes off-load |
| CN108709977A (en) * | 2018-07-19 | 2018-10-26 | 浙江大学城市学院 | A kind of ground preloading influences the indoor model test device and test method of existing subway tunnel |
| CN108709977B (en) * | 2018-07-19 | 2024-03-01 | 浙江大学城市学院 | Indoor model test device and method for influencing existing subway tunnel by ground overload |
| CN109297880A (en) * | 2018-10-11 | 2019-02-01 | 中国电建集团华东勘测设计研究院有限公司 | Buried hydraulic tunnel osmotic gradient simulation experiment system and test method |
| CN109545069B (en) * | 2018-11-30 | 2020-09-11 | 辽宁工程技术大学 | Experimental device for simulating non-uniform settlement of goaf building and using method |
| CN109545069A (en) * | 2018-11-30 | 2019-03-29 | 辽宁工程技术大学 | A kind of experimental provision and application method for simulating building on goaf differential settlement |
| CN109406281A (en) * | 2018-12-11 | 2019-03-01 | 中国矿业大学(北京) | A kind of tunnel butterfly destruction area similarity simulation experiment platform and experimental method |
| CN109883470A (en) * | 2019-01-18 | 2019-06-14 | 北京工业大学 | Cutter head of shield machine condition monitoring system and method |
| CN110530743A (en) * | 2019-08-28 | 2019-12-03 | 西安近代化学研究所 | A kind of ammunition induced detonation high speed fragments protection effect analogue experiment method |
| CN110530743B (en) * | 2019-08-28 | 2021-12-21 | 西安近代化学研究所 | Simulation experiment method for protective effect of ammunition gap high-speed fragment |
| CN110749721A (en) * | 2019-09-28 | 2020-02-04 | 同济大学 | Tunnel model test platform considering complex loading and unloading working conditions |
| CN110887743A (en) * | 2019-11-14 | 2020-03-17 | 宁波大学 | Method for applying blasting dynamic load in shear test of large-size rock mass anchoring structural plane |
| CN110887743B (en) * | 2019-11-14 | 2022-04-19 | 宁波大学 | Method for applying blasting dynamic load in shear test of large-size rock mass anchoring structural plane |
| CN111044362A (en) * | 2019-12-05 | 2020-04-21 | 武汉理工大学 | Transient unloading device and rock mass transient unloading simulation test system |
| CN111044362B (en) * | 2019-12-05 | 2021-09-14 | 武汉理工大学 | Transient unloading device and rock mass transient unloading simulation test system |
| CN111912377A (en) * | 2020-06-24 | 2020-11-10 | 湘潭大学 | Method, system and equipment for acquiring similar experimental rock deformation monitoring data |
| CN113917108A (en) * | 2021-09-07 | 2022-01-11 | 三峡大学 | Model test device for simulating high and steep slope excavation unloading and displacement monitoring method |
| CN113917108B (en) * | 2021-09-07 | 2024-03-12 | 三峡大学 | Model test device for simulating high-steep slope excavation unloading and displacement monitoring method |
| CN115030235A (en) * | 2022-04-08 | 2022-09-09 | 中国地质大学（武汉） | Model test device for researching failure of pile foundation under blasting effect |
| CN115112479A (en) * | 2022-07-13 | 2022-09-27 | 东北大学 | Method for reconstructing local high-stress environment inside large deep three-dimensional physical model |
| CN115112479B (en) * | 2022-07-13 | 2024-04-09 | 东北大学 | Reconstruction method for local high-stress environment in large deep three-dimensional physical model |
| CN115290474A (en) * | 2022-08-02 | 2022-11-04 | 天津大学 | Tunnel group drilling and blasting excavation experimental device and method under plane stress |
| CN116183668A (en) * | 2022-12-28 | 2023-05-30 | 中国矿业大学 | System and method for testing super-dynamic blasting parameters under confining pressure condition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107796646B (en) | 2023-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107796646A (en) | Simulate the experimental rig and test method of deep-lying tunnel Blasting Excavation off-load | |
| CN103344491B (en) | Method for simulating roadway rock burst based on coaction of static load and blast load | |
| Li et al. | Model test study on surrounding rock deformation and failure mechanisms of deep roadways with thick top coal | |
| CN107807051A (en) | Simulate the experimental rig and test method of Blasting Excavation off-load under three-dimensional loading environment | |
| CN105974056B (en) | Tunnel water bursting disaster precursor information monitoring model pilot system and test method | |
| CN108827233B (en) | Prediction method for ground settlement of two-layer goaf | |
| CN207487990U (en) | Simulate the experimental rig of deep-lying tunnel Blasting Excavation off-load | |
| CN204064783U (en) | Roadway support laboratory simulation device | |
| CN110554169A (en) | tunnel excavation process simulation test device and method | |
| CN103063335B (en) | Three-dimensional geological survey testing method of deep portion crustal stress based on loading monitoring data | |
| CN109470101B (en) | Method for researching influence of adjacent tunnel blasting on existing tunnel based on field model | |
| CN206411107U (en) | A kind of lab simulation stress relief method determines the experimental rig of crustal stress | |
| Wakabayashi et al. | Geological characterization of melanges for practitioners | |
| CN103790582A (en) | Geostress measuring device and method | |
| CN209821195U (en) | Visual shield tunnel construction slip casting effect detection test device | |
| CN106979888A (en) | Study the test apparatus and test method of ore pillar digging process obturation carrying mechanism | |
| CN206057093U (en) | A kind of drilling cuttings method predicting rock burst experimental simulation system | |
| CN112376633A (en) | Gas explosion simulation experiment device and method for gas cabin of urban comprehensive pipe gallery | |
| Su et al. | Study on the stability of high and steep slopes under deep bench blasting vibration in open-pit mines | |
| CN106869904B (en) | A method of Rock Damage state is determined in real time using drilling machine operating parameter is in situ | |
| CN111365072B (en) | Guide hole exploration structure and method for huge cavern of fractured rock mass | |
| Serata et al. | A diametral deformation method for in situ stress and rock property measurement | |
| CN110967463A (en) | Cave body excavation model test device | |
| CN203066983U (en) | Shield tunnel construction environment simulation system | |
| CN113281176A (en) | Method for verifying measurement result of hydrofracturing method and loading device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |