CN107167366B - Gradient pressurization experimental device and gradient pressurization method - Google Patents
Gradient pressurization experimental device and gradient pressurization method Download PDFInfo
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- CN107167366B CN107167366B CN201710365997.4A CN201710365997A CN107167366B CN 107167366 B CN107167366 B CN 107167366B CN 201710365997 A CN201710365997 A CN 201710365997A CN 107167366 B CN107167366 B CN 107167366B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/0202—Control of the test
- G01N2203/0208—Specific programs of loading, e.g. incremental loading or pre-loading
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Abstract
The invention provides a gradient pressurization experimental device and a gradient pressurization method, and belongs to the field of tunnel engineering. The gradient pressurization experimental device comprises a pressurization assembly and a tunnel model experimental device. The pressurizing assembly comprises a separation frame and a plurality of pressurizing bags, a plurality of mutually separated containing spaces are formed on the separation frame, and the pressurizing bags are matched with the containing spaces. The pressurizing bag is provided with a pressurizing inlet for inputting fluid into the pressurizing bag, a cavity is formed on the tunnel model experiment device, and the pressurizing assembly is matched with the side wall of the cavity. The invention also provides a gradient pressurization method based on the gradient pressurization experimental device. The gradient pressurization experimental device and the gradient pressurization method provided by the invention can provide pressure in gradient distribution for a stratum simulation material and an underground structure model in an experiment, so that the pressure is closer to the actual condition, and the reliability of an experimental result is improved.
Description
Technical Field
The invention relates to the field of tunnel engineering, in particular to a gradient pressurization experimental device and a gradient pressurization method.
Background
A tunnel is a building constructed underground or underwater or in a mountain, with railways or roads for motor vehicles to pass through. The tunnel can be divided into three categories of mountain tunnels, underwater tunnels and urban tunnels according to the positions of the tunnels. With the development of engineering equipment and technology, tunnels have become a very common form of construction. The development of the tunnel related technology cannot be separated from the simulation experiment. In a simulation experiment, three principles of static effect equivalence, dynamic effect equivalence and boundary effect equivalence need to be met.
The existing experimental method aiming at the tunnel model is limited by the existing experimental box structure, and the real stress condition of the tunnel cannot be accurately simulated, so that the deviation between the experimental result and the actual value is large.
Disclosure of Invention
The invention provides a gradient pressurization experimental device and a gradient pressurization method, and aims to solve the problems of a tunnel model experimental device and an experimental method in the prior art.
The invention is realized by the following steps:
a gradient pressurization experimental device comprises a pressurization assembly and a tunnel model experimental device;
the pressurizing assembly comprises a separation frame and a plurality of pressurizing bags, a plurality of mutually separated accommodating spaces are formed on the separation frame, and the pressurizing bags are matched with the accommodating spaces;
the pressurizing bag is provided with a pressurizing inlet for inputting liquid or gas into the pressurizing bag;
a cavity is formed in the tunnel model experiment device, and the pressurizing assembly is matched with the side wall of the cavity.
In a preferred embodiment of the present invention, the partition frame includes a first connecting rod and a second connecting rod opposite to the first connecting rod, a partition rod is spanned between the first connecting rod and the second connecting rod, and the partition rod, the first connecting rod and the second connecting rod enclose a plurality of mutually separated accommodating spaces.
In a preferred embodiment of the present invention, a pressurizing pipeline is arranged on the pressurizing bag, and one end of the pressurizing pipeline is connected with the pressurizing inlet.
In a preferred embodiment of the invention, the pressurizing bag is connected to a pressure gauge.
In a preferred embodiment of the invention, the tunnel model experimental device comprises a side plate assembly and an end plate assembly, wherein the side plate assembly and the end plate assembly enclose a cavity;
the side plate assembly comprises more than three side plates, and the side plates are sequentially hinged to form a cylinder structure;
the end plate assembly comprises a first end plate and a second end plate, the first end plate and the second end plate are arranged oppositely, the first end plate is connected with one end of the side plate assembly, and the second end plate is connected with the other end of the side plate assembly;
the side plate assembly comprises a first side plate, a second side plate and a third side plate, wherein the second side plate and the third side plate are connected to two ends of the first side plate, and the first side plate and the third side plate are detachably connected.
In a preferred embodiment of the present invention, the side plate assembly further includes a fourth side plate, the first side plate and the fourth side plate are disposed oppositely, the second side plate and the third side plate are disposed oppositely, and the side plates on the side plate assembly are hinged in sequence;
the first end panel comprises a first blade and a first connecting piece, the first connecting piece comprises a blade connecting portion and two side plate connecting portions, the blade connecting portion is fixedly connected with the first blade, one side plate connecting portion is hinged to the second side plate, and the other side plate connecting portion is hinged to the third side plate.
In a preferred embodiment of the invention, the first end panel further comprises a second leaf, a third leaf, a second connector and a third connector, the first leaf partially overlapping the second leaf, the second leaf partially overlapping the third leaf;
the second connecting piece is fixedly connected with the second blade and hinged with the second side plate and the third side plate;
the third connecting piece is fixedly connected with the third blade, and the third connecting piece is hinged with the second side plate and the third side plate.
A gradient pressurization method is based on the gradient pressurization experimental device and comprises the following steps:
a. placing the pressurizing bag in the accommodating space, placing the pressurizing assembly in the cavity and attaching the pressurizing assembly to the wall surface of the cavity;
b. adding a formation simulation material into the cavity;
c. placing an underground structure model into the cavity;
d. adding a stratum simulation material into the cavity, and enabling the stratum simulation material to cover the underground structure model;
e. the pressure is applied to each pressurized bag.
In a preferred embodiment of the invention, step e is carried out by inflating the bag with gas.
In a preferred embodiment of the invention, step e is carried out by filling the bag with a liquid.
The invention has the beneficial effects that: the gradient pressurization experimental device and the gradient pressurization method obtained through the design can apply pressure distributed according to a specific rule when in use, so that pressure distribution and experimental results meeting various stratum conditions are obtained.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a gradient pressurization experimental apparatus provided by an embodiment of the present invention;
FIG. 2 is a schematic diagram of a pressurized bag provided by an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a tunnel model experiment apparatus provided in the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a tunnel model experimental apparatus provided in an embodiment of the present invention in a shearing state;
FIG. 5 is a schematic structural view of a first side panel provided in an embodiment of the present invention;
FIG. 6 is a schematic structural view of a first end panel provided by an embodiment of the present invention;
FIG. 7 is a schematic view of a first end panel in a cut-away configuration according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a first connecting member according to an embodiment of the present invention;
fig. 9 is a schematic diagram of gradient pressurization using the gradient pressurization experimental apparatus provided in the embodiment of the present invention.
Icon: 100-tunnel model experimental device; 110-a side plate assembly; 130-an end panel assembly; 150-a damping assembly; 111-a first side panel; 112-a second side panel; 113-a third side panel; 114-a fourth side panel; 131-a first end panel; 133-a first connecting member; 134-a second connector; 135-a third connection; 1112-side plate base body; 1114-a first side panel flap; 1116-a second side panel edge wing; 1311-first blade; 1312-a second vane; 1313-third blade; 1314-connecting seat; 1331-blade connection; 1333-side plate connection; 1118-a first connection hole; 1128-second connection hole; 1119-first rotating shaft; 200-a pressurizing assembly; 210-a spacer; 230-a pressurized bag; 211-first connecting rod; 213-a second connecting rod; 215-a spacer bar; 217-an accommodating space; 231-a bag body; 233-a pressurized pipe; 235-a pressure gauge; 237-a valve; 001-gradient pressurization experimental device.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral to one another; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature may be present on or under the second feature in direct contact with the first and second feature, or may be present in the first and second feature not in direct contact but in contact with another feature between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Example (b):
referring to fig. 9, the present embodiment provides a gradient pressurization experimental apparatus 001, and the gradient pressurization experimental apparatus 001 includes a pressurization assembly 200 and a tunnel model experimental apparatus 100.
Referring to fig. 1, the pressurizing assembly 200 includes a partition frame 210 and a pressurizing bag 230.
The partition frame 210 includes a first connection rod 211 and a second connection rod 213, and the first connection rod 211 and the second connection rod 213 are oppositely disposed. A separation rod 215 is spanned between the first connecting rod 211 and the second connecting rod 213. The separating rod 215, the first connecting rod 211 and the second connecting rod 213 enclose a plurality of receiving spaces 217 separated from each other.
Referring to fig. 2, the pressurizing bag 230 includes a bag body 231 and a pressurizing pipe 233. The bag 231 is provided with a pressurizing inlet, and one end of the pressurizing pipeline 233 is connected with the pressurizing inlet. The pressure gauge 235 and the valve 237 are connected to the pressure pipe 233, and the other end of the pressure pipe 233 is connected to a liquid pump or an air pump.
The bag 231 is adapted to the receiving space 217.
The tunnel model experiment device 100 includes a side plate assembly 110, an end plate assembly 130, and a damper assembly 150. The side panel assembly 110 and the end panel assembly 130 define a cavity.
The side plate assembly 110 comprises a first side plate 111, a second side plate 112, a third side plate 113 and a fourth side plate 114, wherein the first side plate 111, the second side plate 112, the third side plate 113 and the fourth side plate 114 are hinged in sequence and enclose a cylinder with a rectangular cross section.
Specifically, the first side plate 111 is disposed opposite to the fourth side plate 114, and the second side plate 112 is disposed opposite to the third side plate 113. One end of the first side plate 111 is connected to the second side plate 112, and the other end of the first side plate 111 is connected to the third side plate 113.
The first side plate 111 is provided with a first connecting hole 1118, the second side plate 112 is provided with a second connecting hole 1128, and the first rotating shaft 1119 sequentially passes through the first connecting hole 1118 and the second connecting hole 1128, so that the first side plate 111 and the second side plate 112 are rotatably connected.
Further, the connection between the first side plate 111 and the third side plate 113, the connection between the fourth side plate 114 and the third side plate 113, and the connection between the fourth side plate 114 and the second side plate 112 may be the same as the connection between the first side plate 111 and the second side plate 112.
Referring to fig. 5, the first side plate 111 further includes a side plate base 1112, a first side plate edge 1114 and a second side plate edge 1116. The first side plate edge 1114 and the second side plate edge 1116 are disposed at two ends of the side plate base 1112, and the first side plate edge 1114 and the second side plate edge 1116 are connected to the side plate base 1112. Specifically, the first side panel edge 1114 and the second side panel edge 1116 are perpendicular to the side panel base 1112.
Further, the second side plate 112, the third side plate 113 and the fourth side plate 114 are all the same as the first side plate 111. Referring to fig. 3 and 4, the side panels of the side panels can be shifted relative to each other without interference.
The end panel assembly 130 includes a first end panel 131 and a second end panel (not shown). The first end panel 131 is disposed opposite to the second end panel. A first end panel 131 is attached to one end of the side panel assembly 110 and a second end panel is attached to the other end of the side panel assembly 110.
Referring to fig. 3 and 4, further, the side panel wings of the first side panel 111, the second side panel 112, the third side panel 113 and the fourth side panel 114 cover the first end panel 131 and the second end panel.
Referring to fig. 6 and 7, the first end panel 131 further includes a first blade 1311, a second blade 1312, and a third blade 1313. The first blade 1311 is connected to the side plate assembly 110 by a first connector 133. The connection is realized in particular by:
referring to fig. 8, the first connecting member 133 is provided with two blade connecting portions 1331 and two side plate connecting portions 1333, the two blade connecting portions 1331 and the two side plate connecting portions 1333 are uniformly distributed on the first connecting member 133 base body of the rod-shaped structure, and the two side plate connecting portions 1333 are distributed at two ends of the two blade connecting portions 1331. The blade connection part 1331 is fixedly connected to the first blade 1311, and the two side plate connection parts 1333 are hinged to the second and third side plates 112 and 113, respectively.
The second end panel is of the same construction as the first end panel 131.
Further, the first end panel 131 and the second end panel are both made of transparent materials, so that experimenters can conveniently observe the internal conditions of the tunnel model experiment device 100.
The damper assembly 150 includes two dampers. Two dampers are connected to the hinge shafts of the respective side plates of the side plate assembly 110 to cross each other. Namely: one end of one damper is connected to the hinge axis of the first side plate 111 and the second side plate 112, and the other end is connected to the hinge axis of the third side plate 113 and the fourth side plate 114; one end of the other damper is connected to the hinge axis between the first side plate 111 and the third side plate 113, and the other end is connected to the hinge axis between the third side plate 113 and the second side plate 112.
Further, the two ends of the damper are hook-shaped structures, and the hook-shaped structures are matched with the hinge shafts between the side plates on the side plate assembly 110, so that the connection of the damper is realized.
Specifically, the damper is an elastic member.
It should be noted that: in other embodiments of the present invention, the number of the side plates on the side plate assembly 110 is not limited to four, and all the number of the side plates capable of realizing the shearing deformation of the tunnel model experiment apparatus 100 should be included in the protection scope of the present invention;
in other embodiments of the present invention, the number of blades on the first end panel 131 is not limited to three, but may be any positive integer;
in the embodiment of the present invention, the damping component 150 is provided to make the damping component 150 provide damping for the tunnel model experiment apparatus 100, specifically, the damping component 150 may be selected from elastic damping, viscous damping, plastic damping, elastic-viscous-plastic combined damping, and the like, and the damping component 150 may also be set as a rigid cable, when the damping component 150 is set as a rigid cable, the tunnel model experiment apparatus 100 is a rigid box;
the first end panel 131 and the second end panel are made of transparent materials for the experimenter to observe the inside of the tunnel model experiment device 100, but of course, in other embodiments of the present invention, the first end panel 131 and the second end panel may also be made of opaque materials.
The pressurizing assembly 200 is adapted to the cavity size of the tunnel model experiment apparatus 100, that is: the pressurizing assembly 200 may be attached to a wall of the tunnel model experiment apparatus 100.
The gradient pressurization method based on the gradient pressurization experimental device 001 comprises the following steps:
a. placing the pressurizing bag 230 in the accommodating space 217, placing the pressurizing assembly 200 in the cavity and attaching the pressurizing assembly to the wall surface of the cavity;
b. adding a formation simulation material into the cavity;
c. placing an underground structure model into the cavity;
d. adding a stratum simulation material into the cavity, and enabling the stratum simulation material to cover the underground structure model;
e. pressure is applied to each of the pressure pockets 230.
Further, the pressurizing bag 230 may be an air bag or a water bag, and step e may be implemented by filling the pressurizing bag 230 with gas or liquid. When the pressurizing bag 230 is inflated with gas, the volume of the gas may be compressed to some extent and thus may be used to simulate a flexible loading; when the pressurizing bag 230 is filled with liquid, the volume of the liquid is incompressible and thus can be used to simulate a rigid load. A pressure gauge 235 and a valve 237 are connected to the pressurizing pipe 233 so that an experimenter can control the pressure of the fluid in each pressurizing bag 230 to a specific value.
Since the accommodating spaces 217 are separated from each other, the pressure in each pressurizing bag 230 can be independently controlled, so that loads having various distribution rules (such as gradient distribution rules) can be applied (see fig. 9).
In actual conditions, the pressure in the stratum is not in mean distribution, so the gradient pressurization experimental device 001 and the gradient pressurization method provided by the invention are beneficial to obtaining an experimental result closer to the actual condition, and the accuracy of a simulation experimental model and the reliability of the experimental result are improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A gradient pressurization experimental device is characterized by comprising a pressurization assembly and a tunnel model experimental device;
the pressurizing assembly comprises a separation frame and a plurality of pressurizing bags, a plurality of mutually separated accommodating spaces are formed on the separation frame, and the pressurizing bags are matched with the accommodating spaces;
the pressurizing bag is provided with a pressurizing inlet for inputting fluid into the pressurizing bag;
a cavity is formed on the tunnel model experiment device, and the pressurizing assembly is matched with the side wall of the cavity;
the tunnel model experiment device comprises a side plate assembly and an end plate assembly, wherein the side plate assembly and the end plate assembly enclose a cavity;
the side plate assembly comprises more than three side plates, and the side plates are sequentially hinged to form a cylinder structure;
the end plate assembly comprises a first end plate and a second end plate, the first end plate and the second end plate are arranged oppositely, the first end plate is connected with one end of the side plate assembly, and the second end plate is connected with the other end of the side plate assembly;
the side plate assembly comprises a first side plate, a second side plate and a third side plate, wherein the second side plate and the third side plate are connected to two ends of the first side plate;
the first side plate is provided with a first connecting hole, the second side plate is provided with a second connecting hole, and the first rotating shaft sequentially penetrates through the first connecting hole and the second connecting hole.
2. The gradient pressurization experimental device according to claim 1, wherein the separation frame comprises a first connecting rod and a second connecting rod arranged opposite to the first connecting rod, a separation rod is arranged between the first connecting rod and the second connecting rod, and the separation rod, the first connecting rod and the second connecting rod enclose a plurality of mutually separated accommodating spaces.
3. The gradient pressurization experimental device as claimed in claim 1, wherein the pressurization bag comprises a bag body and a pressurization pipeline, the pressurization inlet is arranged on the bag body, and one end of the pressurization pipeline is connected with the pressurization inlet.
4. The gradient pressurization experimental facility as claimed in claim 1, wherein the pressurization bag is connected with a pressure gauge.
5. The gradient pressurization experiment device according to claim 1, wherein the side plate assembly further comprises a fourth side plate, the first side plate and the fourth side plate are oppositely arranged, the second side plate and the third side plate are oppositely arranged, and the side plates on the side plate assembly are sequentially hinged;
the first end panel comprises a first blade and a first connecting piece, the first connecting piece comprises a blade connecting portion and two side plate connecting portions, the blade connecting portion is fixedly connected with the first blade, one side plate connecting portion is hinged to the second side plate, and the other side plate connecting portion is hinged to the third side plate.
6. The gradient pressurization experimental apparatus of claim 5, wherein the first end panel further comprises a second blade, a third blade, a second connector, and a third connector, the first blade partially overlapping the second blade, the second blade partially overlapping the third blade;
the second connecting piece is fixedly connected with the second blade and hinged with the second side plate and the third side plate;
the third connecting piece is fixedly connected with the third blade, and the third connecting piece is hinged with the second side plate and the third side plate.
7. A gradient pressurization experimental device based on any one of claims 1 to 6, wherein the gradient pressurization experimental device comprises the following steps:
a. placing the pressurizing bag in the accommodating space, placing the pressurizing assembly in the cavity and attaching the pressurizing assembly to the wall surface of the cavity;
b. adding a formation simulation material into the cavity; wherein the side plate assembly and the end plate assembly enclose the cavity; the side plate assembly comprises more than three side plates, and the side plates are sequentially hinged to form a cylinder structure; the end plate assembly comprises a first end plate and a second end plate, the first end plate and the second end plate are arranged oppositely, the first end plate is connected with one end of the side plate assembly, and the second end plate is connected with the other end of the side plate assembly; the side plate assembly comprises a first side plate, a second side plate and a third side plate, wherein the second side plate and the third side plate are connected to two ends of the first side plate; the first side plate is provided with a first connecting hole, the second side plate is provided with a second connecting hole, and the first rotating shaft sequentially penetrates through the first connecting hole and the second connecting hole;
c. placing an underground structure model into the cavity;
d. adding a stratum simulation material into the cavity, and enabling the stratum simulation material to cover the underground structure model;
e. the pressure is applied to each pressurized bag.
8. The gradient pressurization method according to claim 7, wherein the step e is performed by inflating a gas into the pressurization bag.
9. The gradient pressurization method according to claim 7, wherein the step e is performed by filling the pressurizing bag with a liquid.
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| KR101151692B1 (en) * | 2009-07-01 | 2012-06-15 | 한국과학기술원 | Impact test equipment for the corrugated metal membrane |
| CN101738331B (en) * | 2009-12-28 | 2011-08-17 | 北京交通大学 | Tunnel construction simulation plane strain model test device |
| CN102175831B (en) * | 2010-12-30 | 2014-01-29 | 同济大学 | Side cover plate for geotechnical engineering physical model test |
| CN103000068B (en) * | 2012-08-28 | 2014-11-12 | 浙江工业大学 | Tunnel construction process simulating test method |
| CN103616287B (en) * | 2013-11-28 | 2015-09-02 | 湖南大学 | A kind of tunnel excavation indoor model test device |
| CN204177679U (en) * | 2014-07-15 | 2015-02-25 | 中国矿业大学 | A kind of gasbag-type loads analog simulation experimental device |
| CN104297066B (en) * | 2014-09-15 | 2017-01-18 | 中国矿业大学 | Static soil pressure testing device and method for gradient microstructure soil |
| CN104535728B (en) * | 2015-01-14 | 2017-01-11 | 中国矿业大学 | Two-dimensional physical simulation testing system for deeply-buried tunnel water bursting hazard and testing method thereof |
| CN104713987B (en) * | 2015-01-25 | 2017-04-19 | 北京工业大学 | Model test apparatus for stimulating tunnel excavation process |
| CN105136417B (en) * | 2015-10-12 | 2017-11-17 | 福州大学 | A kind of pin-connected panel stiffness variable model casing for shaketalle test |
| CN105973620B (en) * | 2016-04-29 | 2018-10-19 | 重庆交通大学 | The tunnel model test device of failure and deformation of surrounding rocks is observed for the whole audience |
| CN106483023B (en) * | 2016-12-08 | 2023-12-05 | 兰州交通大学 | True triaxial simulation tunnel experimental device |
| CN106680102A (en) * | 2017-01-13 | 2017-05-17 | 同济大学 | Servo pressure control high-pressure underground project test box system |
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