CN113189304A - Experimental device for simulating crossing of fault tunnel - Google Patents
Experimental device for simulating crossing of fault tunnel Download PDFInfo
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- CN113189304A CN113189304A CN202110476930.4A CN202110476930A CN113189304A CN 113189304 A CN113189304 A CN 113189304A CN 202110476930 A CN202110476930 A CN 202110476930A CN 113189304 A CN113189304 A CN 113189304A
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- 238000010008 shearing Methods 0.000 claims abstract description 99
- 238000004088 simulation Methods 0.000 claims abstract description 23
- 230000000694 effects Effects 0.000 claims abstract description 10
- 230000001174 ascending effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 239000011435 rock Substances 0.000 abstract description 6
- 230000009471 action Effects 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The invention discloses an experimental device for simulating the crossing of a fault tunnel, which comprises a first vibration table, a second vibration table, a fixed shearing box, a movable shearing box, a fault simulation area, a hourglass unloading device and an electric lifting platform. The device provided by the invention truly simulates the tunnel dynamic reaction of the cross-fault tunnel under vibration and fault dislocation. The tunnel dynamic reaction under different vibration effects can be simulated by debugging the vibrating table, the surrounding rock sinking dynamic reaction under the earthquake effect can be simulated by the hourglass unloading device, and the tunnel reaction under the fault dislocation and vibration effects can be simulated by using the two parts simultaneously.
Description
Technical Field
The invention relates to the field of experimental devices for simulating tunnels, in particular to an experimental device for simulating the crossing of a fault tunnel.
Background
Since the innovation is open, the Chinese economy develops rapidly, and with the rapid development of the economy, the traffic field develops rapidly. The total mileage of railways and highways is in the front of the world, more and more railways and highways are built, the railways and highways can inevitably cross mountains, a large number of tunnels need to be built, in the previous tunnel building process, engineers consider to be far away from fault zones as far as possible, and statistically, tunnels at the fault positions are seriously damaged under the action of earthquakes, but with the development of high economic speed and the popularization of railways and highways, the fault zones can inevitably cross, the research on the fault crossing of the tunnels is far from mature, and researchers need to be invested in the fault zones. The fault is a geological structure, which is composed of an upper plate and a lower plate, is divided into a fault surface, a fault line, a broken plate and a fault distance, is mainly expressed as relative dislocation of the two plates, and is mainly divided into the following steps according to the relative motion relationship of the two plates: the upper tray relatively descends and the lower tray relatively ascends. Reverse fault: the lower plate relatively descends, and the upper plate relatively ascends. ③ sliding fault: the two plates of rock mass do horizontal relative movement along the fault surface. The damage scale of the sliding fault is huge under the action of earthquake, and the length reaches dozens to hundreds of kilometers. The dislocation of the fault can greatly affect the stability of the tunnel surrounding rock, and the tunnel structure can be subjected to shearing damage. For example, great earthquake in Wenchuan in China causes damage to more than 300 tunnels in Wenchuan in China to different degrees. The fault is particularly seriously damaged, a single-mountain tunnel is destroyed during construction due to fault dislocation of a Japanese earthquake fault, a plurality of railway tunnels are destroyed due to fault dislocation of the American Saint Andree faults, and the repair is difficult. With the development of numerical simulation, some researchers also research cross-fault tunnels, but the research mostly has contingency, a large number of model tests are needed to compare and verify the accuracy of the numerical simulation, and the model tests become the key for researching the cross-fault tunnels, so the model tests are also the most effective method for reflecting the true situation. Of course, the existing cross-fault tunnel dislocation model test device in China is similar to the cross-fault tunnel dislocation device invented by Ji university and the like. The method only researches a stress mechanism under fault dislocation or considers different dip angles of the fault, and the fault is only dislocated under the action of an earthquake, although fault dislocation has great influence on a tunnel, earthquake motion cannot be ignored, and the tunnel stress mechanism under the combined action of the earthquake motion and the fault dislocation is closest to the real condition, so that the authenticity of a result can be ensured.
Disclosure of Invention
The present invention is directed to provide an experimental apparatus for simulating a cross-sectional tunnel to solve the above problems.
The invention realizes the purpose through the following technical scheme:
the movable shearing machine comprises a first vibrating table, a second vibrating table, a fixed shearing box, a movable shearing box, a fault simulation area, an hourglass unloading device and an electric lifting platform, wherein the fixed shearing box is fixedly arranged on the first vibrating table, the movable shearing box is fixedly arranged on the second vibrating table through the hourglass unloading device, the fault simulation area is arranged between the fixed shearing box and the movable shearing box, the electric lifting platform is arranged between the second vibrating table and the lower end of the fault simulation area, and the electric lifting platform is close to the movable shearing box.
Further, the fixed shearing box consists of a fixed shearing box cover, a fixed shearing box bottom plate, four fixed shearing box stand columns, four fixed shearing box handrails, a fixed shearing box baffle plate and a fixed shearing box movable plate, wherein the lower ends of the four fixed shearing box stand columns are fixed at the four corners of the fixed shearing box bottom plate, the fixed shearing box handrails are multiple, the two ends of the multiple fixed shearing box handrails are transversely fixed between the two adjacent fixed shearing box stand columns and enclose three sides of the fixed shearing box bottom plate, the fixed shearing box baffle plate is fixedly arranged at the fourth side of the fixed shearing box bottom plate, the four corners of the fixed shearing box cover are movably connected with the upper ends of the four fixed shearing box stand columns, the fixed shearing box baffle plate is formed by movably connecting the two fixed shearing box, and the upper section of the middle part is provided with a notch, the fixed shear box movable plate is movably connected with the notch of the fixed shear box baffle, and the outer side of the fixed shear box baffle is located on one side of the fault simulation area.
Further, the movable shearing box consists of a movable shearing box bottom plate, four movable shearing box stand columns, a movable shearing box cover, movable shearing box railings, movable shearing box baffles and a movable shearing box movable plate, the lower ends of the four movable shearing box stand columns are fixed at four corners of the movable shearing box bottom plate, the movable shearing box railings are multiple, two ends of the multiple movable shearing box railings are transversely fixed between two adjacent movable shearing box stand columns and enclose three sides of the movable shearing box bottom plate, the movable shearing box baffles are fixedly arranged at the fourth sides of the movable shearing box bottom plate, the four corners of the movable shearing box cover are movably connected with the upper ends of the four movable shearing box stand columns, the movable shearing box baffles are formed by movably connecting the two movable shearing box, and the upper section of the middle part is provided with a notch, the movable shearing box movable plate is movably connected with the gap of the movable shearing box baffle, and the outer side of the movable shearing box baffle is positioned on one side of the fault simulation area.
Further, the fault simulation district comprises bottom plate, fault case lid, rear panel, front panel, fault panel and fault panel fly leaf, the rear panel with the lower terminal surface of front panel fixed respectively set up in the both sides of bottom plate, the fault panel slant set up in between rear panel and the front panel, one side that the fault panel slant is ascending is close to fixed shear box, one side that the fault panel slant is down is close to movable shear box, the fault panel is formed by two swing joint, and the middle part is provided with the breach, fault panel fly leaf with breach swing joint on the fault panel.
Further, hourglass uninstallation device comprises stand, drum, baffle and bolt, the hypomere of stand is located in the drum to can reciprocate, four round holes are seted up to the side of drum, set up on the drum the position of round hole is seted up from top to bottom and is held the square hole of baffle, the baffle inserts in the square hole and can reciprocate and open and shut the round hole, the drum passes through the bolt fastening is in on the second shaking table.
The invention has the beneficial effects that:
compared with the prior art, the experimental device for simulating the crossing of the fault tunnel can simulate the dynamic response of the tunnel under the vibration action, the fault dislocation action, the surrounding rock sinking and the combined action of the vibration and the fault dislocation of the cross-fault tunnel, and can also simulate the influence of different burial depths on the tunnel, wherein the fault dislocation has great influence on the tunnel. The device truly simulates the tunnel dynamic reaction of the cross-fault tunnel under vibration and fault dislocation. The tunnel dynamic reaction under different vibration effects can be simulated by debugging the vibrating table, the surrounding rock sinking dynamic reaction under the earthquake effect can be simulated by the hourglass unloading device, and the tunnel reaction under the fault dislocation and vibration effects can be simulated by using the two parts simultaneously.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the fixed shear box configuration of the present invention;
FIG. 3 is a schematic view of the construction of the mobile shear box of the present invention;
FIG. 4 is a schematic diagram of a fault simulation zone structure according to the present invention;
FIG. 5 is a schematic view of a fault panel structure of the present invention;
figure 6 is a schematic view of the hourglass unloading device of the invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1-6: the device comprises a first vibration table 1, a second vibration table 2, a fixed shearing box, a movable shearing box, a fault simulation area, an hourglass unloading device 11 and an electric lifting platform 16, wherein the fixed shearing box is fixedly arranged on the first vibration table 1, the movable shearing box is fixedly arranged on the second vibration table 2 through the hourglass unloading device 11, the fault simulation area is arranged between the fixed shearing box and the movable shearing box, the electric lifting platform 16 is arranged between the second vibration table 2 and the lower end of the fault simulation area, and the electric lifting platform 16 is close to the movable shearing box.
Further, the fixed shear box is composed of a fixed shear box cover 3, a fixed shear box bottom plate 4, four fixed shear box upright posts 5, four fixed shear box balustrades 6, fixed shear box baffle plates 7 and fixed shear box movable plates 8, the fixed shear box upright posts 5 are four, the lower ends of the four fixed shear box upright posts 5 are fixed at the four corners of the fixed shear box bottom plate 4, the fixed shear box balustrades 6 are multiple, the two ends of the fixed shear box balustrades 6 are transversely fixed between the two adjacent fixed shear box upright posts 5 and enclose the three faces of the fixed shear box bottom plate 4, the fixed shear box baffle plates 7 are fixedly arranged at the fourth face of the fixed shear box bottom plate 4, the four corners of the fixed shear box cover 3 are movably connected with the upper ends of the four fixed shear box upright posts 5, and the fixed shear box baffle plates 7 are formed by movably connecting two blocks, and the middle upper section is provided with a gap, the fixed shear box movable plate 8 is movably connected with the gap of the fixed shear box baffle 7, and the outer side of the fixed shear box baffle 7 is positioned on one side of the fault simulation area.
Further, the movable shearing box is composed of a movable shearing box bottom plate 10, movable shearing box upright columns 12, a movable shearing box cover 9, movable shearing box railings 13, movable shearing box baffles 14 and a movable shearing box movable plate 15, the number of the movable shearing box upright columns 12 is four, the lower ends of the four movable shearing box upright columns 12 are fixed at the four corners of the movable shearing box bottom plate 10, the number of the movable shearing box railings 13 is multiple, the two ends of the multiple movable shearing box railings 13 are transversely fixed between the two adjacent movable shearing box upright columns 12 and enclose and block the three sides of the movable shearing box bottom plate 10, the movable shearing box baffles 14 are fixedly arranged at the fourth surface of the movable shearing box bottom plate 10, the four corners of the movable shearing box cover 9 are movably connected with the upper ends of the four movable shearing box upright columns 12, and the movable shearing box baffles 14 are formed by movably connecting two blocks, and the middle upper section is provided with a gap, the movable shearing box movable plate 15 is movably connected with the gap of the movable shearing box baffle plate 14, and the outer side of the movable shearing box baffle plate 14 is positioned on one side of the fault simulation area.
Further, the fault simulation district comprises bottom plate, fault case lid 17, rear panel 18, front panel 19, fault panel 20 and fault panel active plate 21, rear panel 18 with the lower terminal surface of front panel 19 fixed respectively set up in the both sides of bottom plate, fault panel 20 slant set up in between rear panel 18 and the front panel 19, the ascending one side in fault panel 20 inclined plane is close to fixed shear box, the decurrent one side in fault panel 20 inclined plane is close to movable shear box, fault panel 20 is formed by two swing joint, and the middle part is provided with the breach, fault panel active plate 21 with breach swing joint on the fault panel 20.
Further, hourglass uninstallation device 11 comprises stand 111, drum 112, baffle 113 and bolt 114, the hypomere of stand 111 is located in drum 112 to can reciprocate, four round holes are seted up to the side of drum 112, the position that sets up the round hole on the drum 112 from top to bottom sets up and holds the square hole of baffle 113, baffle 113 inserts in the square hole and can reciprocate and open and shut the round hole, drum 112 passes through bolt 114 is fixed in on the second shaking table 2.
The using method of the invention is as follows:
when the device is applied to a specific experiment, lubricating oil is coated on the fixed shear box baffle 7, the fixed shear box movable plate 8, the movable shear box baffle 14, the movable shear box movable plate 15, the fault plane panel 20 and the fault plane movable plate 21 before components are manufactured, so that the components are absolutely smooth and easy to pull out, after the components are manufactured, all the plates are pulled out and filled with cementing materials, the friction of surrounding rocks with different properties is well simulated, enough lubricating oil is coated on the electric lifting platform 16 to prevent the electric lifting platform from being damaged due to the large friction generated between the second vibration table 2 and the electric lifting platform 16, enough lubricating oil is coated on the components before the hourglass unloading device 11 is placed, so that the hourglass unloading device 11 and the movable shear box can slide slightly to avoid the damage to the hourglass unloading device 11 due to the large friction, the partition plate 113 in the hourglass unloading device 11 needs to be pulled out before the experiment is started, the number of the extracted partition plates is properly selected according to experiment requirements, after preparation work is finished, the first vibration table 1 and the second vibration table 2 are started simultaneously, an experiment is started, the electric lifting platform 16 is started simultaneously, loading is carried out according to the rising rate control time of the electric lifting platform, so that excessive loading is avoided, an operator needs to be skilled for many times to operate again, displacement load loading is finished, the electric lifting platform 16 is suspended, the first vibration table 1 and the second vibration table 2 are closed after vibration load loading of the first vibration table 1 and the second vibration table 2 is finished, data are acquired, a field is collected, and the experiment is finished.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides an experimental apparatus for simulation passes through fault tunnel which characterized in that: constitute including first vibrations platform (1), second vibrations platform (2), fixed shear box, activity shear box, fault simulation district, hourglass uninstallation device (11) and electric lift platform (16), fixed shear box fixed set up in on first vibrations platform (1), the activity shear box passes through hourglass uninstallation device (11) fixed set up in on second vibrations platform (2), the fault simulation district set up in fixed shear box with between the activity shear box, electric lift platform (16) set up in second vibrations platform (2) with between the lower extreme of fault simulation district, just electric lift platform (16) are close to the activity shear box.
2. The experimental facility for simulating a cross-sectional tunnel according to claim 1, wherein: the fixed shear box comprises a fixed shear box cover (3), a fixed shear box bottom plate (4), fixed shear box stand columns (5), fixed shear box handrails (6), fixed shear box baffle plates (7) and fixed shear box movable plates (8), wherein the fixed shear box stand columns (5) are four, four lower ends of the fixed shear box stand columns (5) are fixed at four corners of the fixed shear box bottom plate (4), the fixed shear box handrail plates (6) are multiple, two ends of the fixed shear box handrail plates (6) are transversely fixed between two adjacent fixed shear box stand columns (5) and enclose three sides of the fixed shear box bottom plate (4), the fixed shear box baffle plates (7) are fixedly arranged on the fourth surface of the fixed shear box bottom plate (4), four corners of the fixed shear box cover (3) are movably connected with the upper ends of the four fixed shear box stand columns (5), the fixed shear box baffle (7) is formed by two movably connected parts, a notch is formed in the upper section of the middle of the fixed shear box baffle, the fixed shear box movable plate (8) is movably connected with the notch of the fixed shear box baffle (7), and the outer side of the fixed shear box baffle (7) is located on one side of the fault simulation area.
3. The experimental facility for simulating a cross-sectional tunnel according to claim 1, wherein: the movable shearing box comprises a movable shearing box bottom plate (10), movable shearing box upright columns (12), a movable shearing box cover (9), movable shearing box railings (13), movable shearing box baffle plates (14) and movable shearing box movable plates (15), wherein the movable shearing box upright columns (12) are four and four, the lower ends of the movable shearing box upright columns (12) are fixed at the four corners of the movable shearing box bottom plate (10), the movable shearing box railings (13) are multiple, the two ends of the movable shearing box railing (13) are transversely fixed at two adjacent ends between the movable shearing box upright columns (12) and enclose and block the three sides of the movable shearing box bottom plate (10), the movable shearing box baffle plates (14) are fixedly arranged on the fourth surface of the movable shearing box bottom plate (10), the four corners of the movable shearing box cover (9) are movably connected with the upper ends of the movable shearing box upright columns (12), the movable shear box baffle (14) is formed by two movably connected parts, a notch is formed in the upper section of the middle of the movable shear box baffle, the movable shear box movable plate (15) is movably connected with the notch of the movable shear box baffle (14), and the outer side of the movable shear box baffle (14) is located on one side of the fault simulation area.
4. The experimental facility for simulating a cross-sectional tunnel according to claim 1, wherein: fault simulation district comprises bottom plate, fault case lid (17), rear panel (18), front panel (19), fault panel (20) and fault panel fly leaf (21), rear panel (18) with the lower terminal surface of front panel (19) is fixed respectively set up in the both sides of bottom plate, fault panel (20) slant set up in between rear panel (18) and front panel (19), fault panel (20) inclined plane ascending one side is close to fixed shear box, fault panel (20) inclined plane decurrent one side is close to movable shear box, fault panel (20) are formed by two swing joint, and the middle part is provided with the breach, fault panel fly leaf (21) with breach swing joint on fault panel (20).
5. The experimental facility for simulating a cross-sectional tunnel according to claim 1, wherein: hourglass uninstallation device (11) comprises stand (111), drum (112), baffle (113) and bolt (114), the hypomere of stand (111) is located in drum (112) to can reciprocate, four round holes are seted up to the side of drum (112), set up on drum (112) the position of round hole is seted up from top to bottom and is held the square hole of baffle (113), baffle (113) insert in the square hole and can reciprocate and open and shut the round hole, drum (112) pass through bolt (114) are fixed in on second vibrations platform (2).
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CN202110476930.4A CN113189304A (en) | 2021-04-29 | 2021-04-29 | Experimental device for simulating crossing of fault tunnel |
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CN202110476930.4A CN113189304A (en) | 2021-04-29 | 2021-04-29 | Experimental device for simulating crossing of fault tunnel |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113639947A (en) * | 2021-08-18 | 2021-11-12 | 西南交通大学 | Cross-fault tunnel integral shearing variable flexible boundary power model box |
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