CN106500768B - Tunnel granular soil country rock and granary effect test platform - Google Patents
Tunnel granular soil country rock and granary effect test platform Download PDFInfo
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- CN106500768B CN106500768B CN201610960469.9A CN201610960469A CN106500768B CN 106500768 B CN106500768 B CN 106500768B CN 201610960469 A CN201610960469 A CN 201610960469A CN 106500768 B CN106500768 B CN 106500768B
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- tunnel
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- granular soil
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention belongs to granular soil mechanics research field, being related to a kind of tunnel granular soil and granary effect experiment porch, experiment bin is rectangular cabinet, has dodge gate respectively on cabinet front face, trailing flank bottom, installs baffle respectively at dodge gate；Two end side surfaces of experiment bin, bottom surface inner wall have grid, are groove in each grid of grid, install measuring appliance in groove.Tunnel granular soil and granary effect experiment porch provided by the invention, for the measurement and observation to the parameters such as soil body base pressure, lateral pressure, lateral pressure coefficient, anchor pole coefficient of friction, country rock and tunnel interaction, granary effect and phenomenon, and it is able to carry out the construction and operation stage simulation of underground structure, Practical Project and research are instructed to obtain accurate result.
Description
Technical field
The invention belongs to granular soil mechanics research field, it is related to a kind of tunnel granular soil and granary effect experiment porch.
Background technique
Particulate matter is present in nature and daily life, a kind of physical form that can usually see, such as nature
In sand, stone, soil, snow grain etc., common are common in sugared grain, salt, grain etc. and industrial production arrive in life
Have drug, ore etc..Particulate matter is defined as a large amount of particles composed by various complicated connection types in mechanics
Substance system, the diameter of particle is greater than 1 μm in the system.
In recent years, with the rapid development of Chinese national economy, the development and utilization of urban underground space increasingly by
Pay attention to, more and more urban plannings and the underground engineerings facility such as build a large amount of underground railway, municipal tunnel, underground station,
It gradually increases especially with the quantity of Urban Underground pipe gallery, in the underground engineering of China most cities, can encounter
Grain substance strata condition.
In engineering field, the material composition of the soil body, forming process, historical upheaval and its locating natural environment are extremely complex
It is changeable, so that the composition and property of soil are also ever-changing.In the intensity for carrying out ground or underground structure, bearing capacity, deformation, sink
When the analytical calculations such as drop, stable, it is necessary to fully understand and grasp the origin cause of formation, construction, physical composition, the mechanical property, deformation of the soil body
The basic conditions such as feature and underground water could be solved the problems, such as well various encountered in engineering practice.
In scientific research field, granular soil surrounding rock stability mesomechanics characteristic and migration rule are still uncertain；Tunnel surrounding is steady
It is less carefully to see failure mechanism research for tunnel particle properties country rock under qualitative particle country rock partial excavation mode；Particle properties country rock encloses
Rock slump pressure arch evolution mechanism is still not clear；The problems such as surrounding rock failure position and opportunity cannot accurately judge.Particle at present
It is mainly to be established based on loose media pressure theory, but when theory deduction, artificially define perhaps that property country rock load, which calculates,
Mostly it is assumed that causing calculated result and country rock actual loading difference big.
1884, British scientist Roberts first observed to: when its height of the particulate matter being packed into silo H is opposite
When storehouse diameter D is smaller, the pressure that orlop is experienced is approximately proportional to H, similar to static fluid to the pressure of orlop.But when dress
When entering the particulate matter in silo and reaching some height, the pressure that orlop is experienced then reaches a saturation value and no longer increases
Add.This phenomenon is colloquially called granary effect.The reason is that occurring certain shear stress in granule, it can make particle
Weight wall is transferred to by the static friction behavior of granule and cylinder sides wall, so that the stress for alleviating a bottom is negative
Load.
Granary effect has very big research and application value to engineering field, research granary effect regardless of to Practical Project also
It is that customary phenomenon has very big value in daily life for static sand drift, grain mass etc..But how to analyze therein
Stress distribution is still an active study frontier problem so far.
Summary of the invention
It is an object of the invention to design a set of particle properties soil synthesis experiment platform.
The technical scheme is that
Tunnel granular soil and supporting construction interaction experiment porch, including experiment bin, reaction frame, bolt simulation device；
The experiment bin be cuboid cabinet, cabinet include leading flank, trailing flank, two end side surfaces, bottom surface and
There is extension board in top surface without top cover, the bottom both ends of the cabinet, there is bearing diagonal on extension board, the bearing diagonal and cabinet
End side surface is connected, and forms triangle support frame；
There is dodge gate respectively on the leading flank, trailing flank bottom, baffle is installed respectively at dodge gate；
Two end side surfaces and bottom surface inner wall of experiment bin have a grid respectively, are groove in each grid of grid, in groove
There is screw hole in portion；Measuring appliance is installed, the measuring appliance includes two blocks of cuboid plates, respectively upper plate and lower plate, described in groove
Upper board size it is bigger than lower plate, lower plate is mounted in groove, and there is screw hole in lower plate center；Upper plate is connected with lower plate by four springs,
Spring is distributed about the central point central symmetry of cuboid plate；Thousand points of meter installations are between the upper and lower plates.
Anchor pole hole is distributed on the baffle, is multiple holes below anchor pole hole；The hole shape is rectangle,
The curve and baffle lower edge of multiple holes composition surround one it is close-shaped, hole is used to be inserted into cuboid plate；Divide on cuboid plate
It is furnished with foil gauge；The anchor pole hole is used to be inserted into the anchor pole of bolt simulation device.
The reaction frame includes pressing plate, and pressing plate is located in experiment bin.
The reaction frame, including pillar, crossbeam, jacking system, hydraulic system and sensor, pressing plate, pedestal；The branch
Column is mounted on the base, and crossbeam is equipped between pillar, and crossbeam both ends are connected with jacking system, the hydraulic system and sensing
Device is mounted on crossbeam, and is connected with pressing plate below hydraulic system.
The bolt simulation device includes bracket, cross bar, pedestal, motor and sensor, anchor pole；Bracket is mounted on pedestal
On, cross bar is fixed on bracket, and motor and sensor are mounted on cross bar, and motor is connect with anchor pole.
The jacking system effect of reaction frame is adjusting crossbeam, hydraulic system at a distance from sensor, pressing plate and the soil body；It is hydraulic
System and sensor effect are to apply pressure to the soil body by pressing plate and measure pressure size；Pressing plate connects with the soil sample in experiment bin
Touching.
The motor of bolt simulation device provides precession power forward, rockbolt stress during sensor measurement is somebody's turn to do for anchor pole；Anchor
Bar is scaled anchor pole, in the soil body in reserving hole loading test storehouse.
Tunnel granular soil and granary effect experiment porch provided by the invention, for soil body base pressure, lateral pressure,
The measurement and observation of the parameters such as lateral pressure coefficient, anchor pole coefficient of friction, country rock and tunnel interaction, granary effect and phenomenon,
And it is able to carry out the construction and operation stage simulation of underground structure, Practical Project and research are instructed to obtain accurate result.Benefit
With the stress of the spring principle directly proportional to its decrement, the big region measured will be needed to be divided into many zonules, utilize spring
Device measures the pressure of each zonule, and approximate measure goes out the pressure of every bit in region.These area sizes can change, area
Domain divides smaller, as a result more accurate.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is experiment bin schematic perspective view of the invention；
Fig. 3 is experiment bin inner wall structure diagram of the invention；
Fig. 4 is baffle two-dimensional structure schematic diagram of the invention；
Fig. 5 is baffle three dimensional structure diagram of the invention；
Fig. 6 is the structural schematic diagram of cuboid plate of the invention；
Fig. 7 is measuring appliance two-dimensional representation of the invention；
Fig. 8 is measuring appliance schematic three dimensional views of the invention；
Fig. 9 is reaction frame structural schematic diagram of the invention；
Figure 10 is bolt simulation device structural schematic diagram of the invention；
Figure 11 is that the experiment bin of embodiment arranges interior view after measuring appliance；
Figure 12 is embodiment simulation tunnel model schematic diagram；
Figure 13 is the sectional view that embodiment experiment bin loads onto simulation tunnel model.
Specific embodiment
A specific embodiment of the invention is described with reference to the drawings.
Experiment porch, including experiment bin 1, reaction frame 2, anchor as shown in Figure 1, tunnel granular soil and supporting construction interact
Bar simulator 3；
As shown in Fig. 2, the experiment bin 1 is the cabinet of cuboid, cabinet includes leading flank, trailing flank, two end sides
Face, bottom surface, upper top has extension board 4 without top cover, the bottom both ends of the cabinet, there is bearing diagonal 5 on extension board 4, described
Bearing diagonal 5 be connected with the end side surface of cabinet, formed triangle support frame；
There is dodge gate 6 respectively on the leading flank, trailing flank bottom, baffle 10 is installed respectively at dodge gate 6；Such as Fig. 3
Shown, two end side surfaces and bottom surface inner wall of experiment bin 1 have grid 7 respectively, are groove 8, groove 8 in each grid of grid 7
There is screw hole 9 at middle part；
As shown in Figure 4 and Figure 5, anchor pole hole 11 is distributed on the baffle 10, is multiple holes below anchor pole hole 11
12；12 shape of hole is rectangle, and the curve that multiple holes 12 form surrounds close-shaped a, hole with 10 lower edge of baffle
12 for being inserted into cuboid plate 13；As shown in fig. 6, foil gauge 14 is distributed on cuboid plate 13；The anchor pole hole 11 is used
In the anchor pole 25 of insertion bolt simulation device 3.
As shown in Figure 7 and Figure 8, measuring appliance 26 is installed in groove 8, the measuring appliance 26 includes two blocks of cuboid plates 27,
Respectively upper plate and lower plate, the upper board size is bigger than lower plate, and lower plate is mounted in groove 8, and there is screw hole 28 in lower plate center；On
Plate is connected with lower plate by four springs 29, and spring 29 is distributed about the central point central symmetry of cuboid plate 27；Thousand points of 30 peaces of meter
Dress is between the upper and lower plates.
The reaction frame 2 includes pressing plate 19, and pressing plate 19 is located in experiment bin 1.
As shown in figure 9, the reaction frame 2, including pillar 15, crossbeam 16, jacking system 17, hydraulic system and sensor
18, pressing plate 19, pedestal 20；The pillar 15 is mounted on pedestal 20, and crossbeam 16 is equipped between pillar 15, and crossbeam both ends connect
It is connected to jacking system 17, the hydraulic system and sensor 18 are mounted on crossbeam 16, and are connected with below hydraulic system
Pressing plate 19.
As shown in Figure 10, the bolt simulation device 3 include bracket 21, cross bar 22, pedestal 23, motor and sensor 24,
Anchor pole 25；Bracket 21 is mounted on pedestal 23, and cross bar 22 is fixed on the stent 21, and motor and sensor 24 are mounted on cross bar 22
On, motor is connect with anchor pole 25.
As shown in figure 11, when experiment, measuring appliance 26 is put into groove 8, blending bolt connecting screw hole 9 by fixed experiment bin 1
With screw hole 28, measuring appliance 26 is fixed on test cabin 1.
As shown in figure 12, cuboid plate 13 is inserted into the hole 12 of front and rear baffle 10, it can be according to tunnel and underground structure
Interface form and size select different baffles.Composite structure is as shown in figure 11.By composite structure as schemed in experiment bin 1
Shown in 13.
The experiment soil body, the corresponding foil gauge 14 of the record different height soil body and thousand points of 30 readings of meter are added into experiment bin 1.
If being limited to experiment bin height, reaction frame 2 can be used, adjust jacking system 17, pressing plate 19 is made to protrude into experiment
In storehouse 1 and contact the soil body, starting hydraulic system opens sensor, applies pressure to the soil body, and it is big by sensor to measure pressure
It is small.
Using bolt simulation device 3, first it is fixed in front and rear baffle nearby and the height for adjusting crossbeam 22 keeps anchor pole 25 right
The reserving hole 11 of quasi- front and rear baffle 10 is opened motor and sensor in the soil body in 25 precession loading test storehouse 1 of anchor pole, and is remembered
Sensor reading during record.
Constructing tunnel is simulated, extracts cuboid plate 13 out, record soil body slump and records 30 variation of remaining thousand points meters.
Claims (4)
1. tunnel granular soil country rock and granary effect test platform, which is characterized in that including experiment bin (1), bolt simulation device
(3)；
The experiment bin (1) is the cabinet of cuboid, and cabinet includes leading flank, trailing flank, two end side surfaces, bottom surface and top
Face has extension board (4) without top cover, the bottom both ends of the cabinet, there is bearing diagonal (5), the bearing diagonal on extension board (4)
(5) it is connected with the end side surface of cabinet, forms triangle support frame；
Have respectively dodge gate (6) on the leading flank, trailing flank bottom, baffle (10) are installed respectively at dodge gate (6)；
It is distributed with anchor pole hole (11) on the baffle (10), is below anchor pole hole (11) multiple holes (12)；The hole
(12) shape is rectangle, and the curve of multiple hole (12) compositions surrounds one close-shaped, hole (12) with baffle (10) lower edge
For being inserted into cuboid plate (13)；Foil gauge (14) are distributed on cuboid plate (13)；The anchor pole hole (11) is for inserting
Enter the anchor pole (25) of bolt simulation device (3)；
Two end side surfaces and bottom surface inner wall of the experiment bin (1) have grid (7) respectively, are in each grid of grid (7)
Groove (8), groove (8) middle part have screw hole (9)；
Measuring appliance (26) are installed in groove (8), the measuring appliance (26) includes two pieces of cuboid plates (27), respectively upper plate and
Lower plate, the upper board size is bigger than lower plate, and lower plate is mounted in groove (8), and lower plate center has screw hole (28)；Upper plate and lower plate
It is connected by four springs (29), spring (29) is distributed about the central point central symmetry of cuboid plate (27)；Thousand points of meter (30) peaces
Dress is between the upper and lower plates.
2. granular soil country rock in tunnel according to claim 1 and granary effect test platform, which is characterized in that further include anti-
Power frame (2), the reaction frame (2) include pressing plate (19), and pressing plate (19) is located in experiment bin (1).
3. granular soil country rock in tunnel according to claim 2 and granary effect test platform, which is characterized in that the counter-force
Frame (2), including pillar (15), crossbeam (16), jacking system (17), hydraulic system and sensor (18), pressing plate (19), pedestal
(20)；The pillar (15) is mounted on pedestal (20), and crossbeam (16) are equipped between pillar (15), and crossbeam both ends are connected with
Jacking system (17), the hydraulic system and sensor (18) are mounted on crossbeam (16), and connection below hydraulic system
There are pressing plate (19).
4. granular soil country rock in tunnel according to claim 1 and granary effect test platform, which is characterized in that the anchor
Bar simulator (3) includes bracket (21), cross bar (22), pedestal (23), motor and sensor (24), anchor pole (25)；Bracket (21)
It is mounted on pedestal (23), cross bar (22) is fixed on bracket (21), and motor and sensor (24) are mounted on cross bar (22), electricity
Machine is connect with anchor pole (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610960469.9A CN106500768B (en) | 2016-10-26 | 2016-10-26 | Tunnel granular soil country rock and granary effect test platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610960469.9A CN106500768B (en) | 2016-10-26 | 2016-10-26 | Tunnel granular soil country rock and granary effect test platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106500768A CN106500768A (en) | 2017-03-15 |
| CN106500768B true CN106500768B (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201289413Y (en) * | 2008-09-19 | 2009-08-12 | 张宏超 | Real time measurement device for barokinesis distribution of tyre to ground |
| CN102507086A (en) * | 2011-09-22 | 2012-06-20 | 铁道第三勘察设计院集团有限公司 | Pressure test calibration mechanical loading device for earthwork testing |
| CN103837360A (en) * | 2014-03-05 | 2014-06-04 | 中国矿业大学 | Tunnel pipe roof construction method simulation excavation device and tunnel pipe roof construction method simulation excavation implementing method |
| CN205562300U (en) * | 2016-04-28 | 2016-09-07 | 中国科学院武汉岩土力学研究所 | Built -in soil pressure model test device of barricade |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8981018B2 (en) * | 2004-03-15 | 2015-03-17 | Jentek Sensors, Inc. | Internal material condition monitoring for control |
| KR101147213B1 (en) * | 2009-12-04 | 2012-05-25 | 권영억 | a measuring device for displacement volume in underground |
-
2016
- 2016-10-26 CN CN201610960469.9A patent/CN106500768B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201289413Y (en) * | 2008-09-19 | 2009-08-12 | 张宏超 | Real time measurement device for barokinesis distribution of tyre to ground |
| CN102507086A (en) * | 2011-09-22 | 2012-06-20 | 铁道第三勘察设计院集团有限公司 | Pressure test calibration mechanical loading device for earthwork testing |
| CN103837360A (en) * | 2014-03-05 | 2014-06-04 | 中国矿业大学 | Tunnel pipe roof construction method simulation excavation device and tunnel pipe roof construction method simulation excavation implementing method |
| CN205562300U (en) * | 2016-04-28 | 2016-09-07 | 中国科学院武汉岩土力学研究所 | Built -in soil pressure model test device of barricade |
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Inventor after: Lu Junfu Inventor after: Jiang Baiyu Inventor after: Li Xiaoqiang Inventor after: Zhong Yingzhe Inventor after: Ling Senlin Inventor after: Zhang Zhao Inventor after: Ran Xin Inventor after: Xu Jin Inventor before: Lu Junfu Inventor before: Jiang Boyu Inventor before: Li Xiaoqiang Inventor before: Zhong Yingzhe Inventor before: Ling Senlin Inventor before: Zhang Zhao Inventor before: Ran Xin Inventor before: Xu Jin |
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