CN209293081U - Rolled plate Base Pit Excavation Simulation device under a kind of Elevated Gravity - Google Patents

Abstract

The utility model provides rolled plate Base Pit Excavation Simulation device under a kind of Elevated Gravity, including model cabinet and rolled plate model configuration, model cabinet is the rectangular box of upper end opening, rolled plate model configuration is arranged in model casing body, and model cabinet is divided into left and right two parts, model cabinet left half places the soil body, rolled plate model configuration includes roll bending support plate and gate support plate disposed in parallel and positioned at movable gate between the two, several rotatable roll bending structures are provided in roll bending support plate, movable gate can under the drive of wirerope guiding mechanism raising and lowering, as movable gate moves down, roll bending structure positioned at its left side successively turns right, the gap that the soil body generates after being rotated by roll bending structure, which is fallen, to be entered on the right side of model cabinet.The utility model can satisfy the excavation of foundation pit test simulation demand under the excavation of foundation pit demand especially Elevated Gravity under different operating conditions.

Description

Rolled plate Base Pit Excavation Simulation device under a kind of Elevated Gravity

Technical field

The utility model belongs to hypergravity centrifugal model test device field, more particularly, to a kind of Elevated Gravity last volume Board-like Base Pit Excavation Simulation device.

Background technique

In deep foundation pit earthwork digging work progress, need to fully consider tau-effect, the earthwork should be layered, subregion, it is symmetrical, The excavation of even weighing apparatus makes excavation slope that local failure or overall collapse, sliding occur to prevent resistance to shear of soil, intensity from drastically reducing, Supporting construction inclination is sunk so that collapsing.During geotechnical model test, the process for how accurately simulating stage excavation becomes Influence the important link of such excavation of foundation pit test result.

Traditional Base Pit Excavation Simulation method can be summarized as grab bucket method, re-scheduling liquid method and three kinds of gizzard method, but all exist each From the problem of and limitation, be described as follows:

(1) grab bucket method.The shape of grab bucket is similar with the grab bucket of harbour pawl machine, there are the shortcomings that have: 1. due to machinery grab bucket The limitation of structure type causes bottom excavation face uneven；2. due to excavating region, there are sequencings on space-time, cause whole A excavation face stress distribution is uneven；3. cutting depth is difficult to control accurately, it is difficult to simulate the Construction State of thin layer excavation；4. entire Digging process takes a long time, and test efficiency is lower.

(2) re-scheduling liquid method.Re-scheduling liquid method is generally required according to design size, digs out foundation pit in advance on soil model surface, And make flexible silicon glue box and be put into foundation pit, and silicon capsule is connected to outside model casing using drain line, by emptying silica gel The simulation of the method test excavation of foundation pit of intracapsular heavy-fluid.There are many disadvantages for such way: 1. heavy-fluid is ZnCl₂Liquid has Toxicity is damaged human health larger；2. the method is only applicable to certain moduli type soil, such as with the clay of some strength；③ Drain line is affected to soil strength through in soil model；4. need other valve to carry out the on-off of control piper, There may be the risks that can not be opened in test, reduce the success rate of test.

(3) gizzard method.Gizzard method is similar to re-scheduling liquid method, needs to dig out foundation pit in advance, and production has the sandbag of hard shell It is put into wherein, realizes the stage excavation of foundation pit in test and hanging out sandbag one by one.The shortcomings that such method, is: 1. only fitting For certain moduli type soil, such as with the clay of some strength；2. the depth excavated is fixed, and larger, cannot achieve dynamic or The excavation of the smaller depth of person.

In conclusion in a set of energy flexible modulation cutting depth of geotechnical centrifugal model test field urgent need development, being suitable for A variety of soil properties meet on-site actual situations, simple and reliable Base Pit Excavation Simulation device.

Summary of the invention

In view of this, the utility model is directed to rolled plate Base Pit Excavation Simulation device under a kind of Elevated Gravity, needle Test requirements document to Base Pit Excavation Simulation under Elevated Gravity, when the high flexible by controlling movable gate adjusts excavation of foundation pit Every layer of depth；Under limited working space, the unlatching of the big stroke of gate is realized in such a way that pulley blocks are drawn, favorably In the excavation of foundation pit for simulating bigger depth；Roll bending structure can overcome huge soil pressure bring deformation again under Elevated Gravity The overturning that can flexibly realize roll bending structure meets the base under the excavation of foundation pit demand especially Elevated Gravity under different operating conditions Excavate test simulation demand in hole.

In order to achieve the above objectives, the technical solution of the utility model is achieved in that

Rolled plate Base Pit Excavation Simulation device under a kind of Elevated Gravity, including model cabinet and rolled plate model configuration, Model cabinet is the rectangular box of upper end opening, and the setting of rolled plate model configuration is divided in model casing body, and by model cabinet At left and right two parts, model cabinet left half places the soil body, rolled plate model configuration include roll bending support plate disposed in parallel and Gate support plate and several rotatable roll bending structures are provided on movable gate between the two, roll bending support plate, Movable gate can under the drive of wirerope guiding mechanism raising and lowering, as movable gate moves down, be located at its left side Roll bending structure successively turn right, the gap that generates falls that enter model cabinet right after the soil body is rotated by roll bending structure Side.Height by controlling movable gate can be with every layer when flexible modulation excavation of foundation pit of height.

Further, in the wirerope guiding mechanism is arranged on the right side of model cabinet, wirerope guiding mechanism includes steel Cord and pulley blocks, pulley blocks include top sheave group and lower sheave group, and top sheave group is arranged by pulley blocks support plate in model The bottom of model cabinet is arranged in cabinet upper end, lower sheave group, then the upper end of one end connection movable gate of wirerope passes through It is pierced by model cabinet after top sheave group, lower sheave group, is connected with gate mobile device, gate mobile device pulls wirerope to realize Movable gate moves up and down.Under limited working space, the big row of movable gate is realized in such a way that pulley blocks are drawn The unlatching of journey is conducive to the excavation of foundation pit for simulating bigger depth；The roll bending structure can overcome huge soil under Elevated Gravity The deformation of pressure bring can flexibly realize the overturning of roll bending structure again.

Further, the model cabinet includes foreboard, left plate, right side plate, backboard and bottom plate, and foreboard opening is opened The organic glass vision panel of setting, the periphery of organic glass form are fixed on foreboard by organic glass cover board at mouthful, are located at model Sand export and wirerope outlet are offered on foreboard on the right side of cabinet, top is removably provided with displacement and passes on the left of model cabinet Sensor.

Further, offer roll bending installing port in the roll bending support plate, roll bending structure setting in roll bending installing port, The two sides of roll bending installing port are arranged in across both ends after roll bending structure for roll bending active unit rotation axis, and roll bending structure is living by roll bending Moving cell rotation axis and roll bending support plate are rotatablely connected.

Further, the upper end of the roll bending structure is provided with the mounting hole passed through for roll bending active unit rotation axis, Roll bending active unit rotation axis passes through the rotation of achievable roll bending structure after mounting hole, because originally roll bending structure is when testing, It is the soil body on the left of model cabinet, therefore has the support of the soil body on the left of roll bending structure, the right side of roll bending structure is movable gate, because This, movable gate plays the role of support to roll bending structure when not starting test.After on-test, movable gate is down It is mobile, lose support on the right side of roll bending structure, therefore roll bending structure will turn right rotation, roll bending structure rotate after left side The soil body will fall on the right side of model cabinet.

Further, described further includes gate mobile device, and gate mobile device includes braced frame, servo motor, rolling Ballscrew, guiding axis and wirerope drag connecting plate, and servo motor is arranged outside braced frame, ball-screw, guiding axis and steel Cord drags connecting plate and is arranged in braced frame, and ball-screw and guiding axis are parallel to each other and both pass through wirerope dragging connection Plate is connected between guiding axis and wirerope dragging connecting plate by linear bearing, and servo motor is connected with ball-screw, wirerope The wirerope connector connecting with wirerope is provided on dragging connecting plate.

Further, described further includes sand reservoir box, and sand reservoir box is the cabinet of upper end opening, and sand reservoir box is close to model cabinet and is set It sets, and the soil body on the right side of model cabinet passes through the sand export of the foreboard of model cabinet using the company being arranged in sand reservoir box back plate It is entered in sand reservoir box after interface, connector is identical with the size of sand export.Sand export and connector are right angle quadrangle.

Further, sand loading case bottom support plate is stamped above the lower sheave group, under sand loading case bottom support plate makes Pulley blocks are avoided contact with the soil body fallen on the right side of model cabinet.

Further, wire rope casing, wirerope are provided between the pulley blocks support plate and sandbox bottom support plate Pulley blocks support plate is passed through after top sheave group and then passes through sandbox bottom support plate into wire rope casing, passes through downslide It is connected after wheel group with gate mobile device.

Further, the height of sand export and connector is h, the storage sand where foreboard and connector where sand export The rear plate thickness summation of case is D, meets the tangent value that h/D is greater than soil angle of repose.

Further, it is opening that the gate support plate, which is located at the region that movable gate is moved through, i.e. model cabinet is left It is fallen on the right side of model cabinet after the roll bending structure that the soil body of side passes through rotation by gate support plate.

Further, the movable gate upper end is symmetrical arranged there are two wirerope connector, is arranged on movable gate There are several gate lightening holes, the two sides of movable gate are provided with movable friction plate.

Further, the top sheave group and lower sheave group are equipped with two groups, the end connection movable gate of wirerope Both ends.

The two sides of model cabinet upper end opening are provided with T-type guide rail, and the displacement sensor of top passes through on the left of model cabinet Displacement transducer mounting bracket is fixed, and displacement transducer mounting bracket is bolted and is arranged on T-type guide rail, Neng Gou The more flexible measurement position for adjusting displacement sensor when test.

It is provided with right-angle reduction device on servo motor, is connected between right-angle reduction device and ball-screw by shaft coupling.

Working principle of the utility model is:

The present apparatus is placed on geotechnical centrifuge work hanging basket platform, fills model foundation soil in cavity on the left of model cabinet Body turns down to the right first layer roll bending structure before on-test, activity to guarantee that the roll bending structure of model cabinet is smoothly overturn Gate top braces live the roll bending structure after first layer fold, and make first layer roll bending structure and movable gate (roll bending support plate) Keep vertical；It drives wirerope to drag connecting plate by servo motor to move toward model cabinet front plate direction, wirerope passes through steel Cord guiding mechanism drives movable gate to be moved down into the position of second piece of roll bending structure, and second piece of roll bending structure is in centrifugal force The lower smoothly fold of effect, cooperates centrifuge manipulator scraper plate, carries out first time excavation to model ground；Pass through T-type guide rail restocking If displacement sensor when can detect first time excavation of foundation pit, the sedimentation situation of the foundation soil body outside foundation pit；Repeat with Upper movement carries out the excavation of deeper soil layer.

Model clay a part that excavation of foundation pit goes out is by sand loading case bottom support plate, model casing side plate, model casing foreboard, model The cavity of case backboard and gate support plate composition accommodates, and another part model clay flows into sand reservoir box from sand export.

In hypergravity geotechnical centrifuge, working space is needed the length side of movable gate actuator than relatively limited To in the width direction of installation model cabinet, wirerope one end is connected movable gate by the present apparatus, and it is mobile that the other end connects gate The wirerope of device drags connecting plate, by the pulley and sand loading case bottom support plate that are mounted in pulley blocks support plate The commutation of pulley realization drawing force.

Gate actuator is driven by servo motor, and servo motor drives ball-screw-transmission knot after right-angle reduction reduction of speed Structure rotary motion, ball screw arrangement convert rotational motion to move along a straight line, and drive wirerope dragging connecting plate along leading To axis horizontal movement.

Compared with the existing technology, rolled plate Base Pit Excavation Simulation device has under Elevated Gravity described in the utility model Following advantage:

Rolled plate Base Pit Excavation Simulation device under Elevated Gravity described in the utility model passes through control movable gate Height can be with every layer when flexible modulation excavation of foundation pit of height；Under limited working space, in such a way that pulley blocks are drawn The unlatching for realizing the big stroke of gate is conducive to the excavation of foundation pit for simulating bigger depth；The roll bending structure can be in hypergravity ring Huge soil pressure bring deformation is overcome under border again can flexibly realize the overturning of roll bending structure；T positioned at model top of the box Type guide rail structure can in test the more flexible measurement position for adjusting displacement sensor, to sum up, the apparatus function is perfect, It is easy for installation, safe and reliable, it can satisfy the needs of the Base Pit Excavation Simulation under Elevated Gravity.

Detailed description of the invention

The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.? In attached drawing:

Fig. 1 is the integral vertical of rolled plate Base Pit Excavation Simulation device under Elevated Gravity described in the utility model embodiment Body structural schematic diagram；

Fig. 2 is that Fig. 1 removes the schematic perspective view after foreboard；

Fig. 3 is that Fig. 2 eliminates the schematic perspective view after sand reservoir box；

Fig. 4 is the schematic perspective view of model cabinet described in the utility model embodiment；

Fig. 5 is the schematic perspective view of wirerope guiding mechanism described in the utility model embodiment；

Fig. 6 is the schematic perspective view of rolled plate model configuration described in the utility model embodiment；

Fig. 7 is the schematic perspective view of rolled plate model configuration described in the utility model embodiment；

Fig. 8 is the schematic perspective view of movable gate described in the utility model embodiment；

Fig. 9 is the schematic perspective view of gate mobile device described in the utility model embodiment；

Figure 10 is the schematic perspective view of roll bending structure described in the utility model embodiment；

Figure 11 is the schematic perspective view of the structure of several roll bending structure connections described in the utility model embodiment；

Figure 12 is the schematic perspective view of T-type guide rail described in the utility model embodiment.

Description of symbols:

1- model cabinet；101- foreboard；102- left plate；103- right side plate；104- backboard；105- bottom plate；106- is organic Glass vision panel；107- organic glass cover board；108- sand export；The outlet of 109- wirerope；2- rolled plate model configuration；201- roll bending Support plate；202- gate support plate；203- movable gate；204- roll bending structure；205- roll bending active unit rotation axis；3- steel wire Rope guiding mechanism；301- wirerope；302- top sheave group；303- lower sheave group；304- pulley blocks support plate；305- sand loading bottom Portion's support plate；306- wire rope casing；4- gate mobile device；401- braced frame；402- servo motor；403- ball wire Thick stick；404- guiding axis；405- wirerope drags connecting plate；406- linear bearing；5- sand reservoir box.

Specific embodiment

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.

In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand For limitations of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result, Feature can explicitly or implicitly include one or more of the features.It is in the description of the present invention, unless another It is described, the meaning of " plurality " is two or more.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition State the concrete meaning of term in the present invention.

The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

As shown in figs. 1-12, rolled plate Base Pit Excavation Simulation device under a kind of Elevated Gravity, including model cabinet 1 and volume Board-like model configuration 2, model cabinet 1 are the rectangular box of upper end opening, and rolled plate model configuration 2 is arranged in model cabinet 1, And model cabinet 1 is divided into left and right two parts, 1 left half of model cabinet places the soil body, and rolled plate model configuration 2 includes parallel The roll bending support plate 201 and gate support plate 202 of setting and positioned at movable gate 203 between the two, roll bending support plate 201 On be provided with several rotatable roll bending structures 204, movable gate 203 can rise under the drive of wirerope guiding mechanism 3 and Decline, as movable gate 203 moves down, the roll bending structure 204 positioned at its left side successively turns right, and the soil body passes through roll bending The gap that structure 204 generates after rotating, which is fallen, enters 1 right side of model cabinet.

In 1 right side of model cabinet, wirerope guiding mechanism 3 includes wirerope 301 for the above-mentioned setting of wirerope guiding mechanism 3 And pulley blocks, pulley blocks include top sheave group 302 and lower sheave group 303, top sheave group 302 is set by pulley blocks support plate 304 It sets in 1 upper end of model cabinet, the bottom of model cabinet 1 is arranged in lower sheave group 303, and one end of wirerope 301 connects movable gate The upper end of door 203, then by being pierced by model cabinet 1 after top sheave group 302, lower sheave group 303, with 4 phase of gate mobile device Even, gate mobile device 4 pulls wirerope 301 to realize moving up and down for movable gate 203.

Above-mentioned model cabinet 1 includes foreboard 101, left plate 102, right side plate 103, backboard 104 and bottom plate 105, foreboard Organic glass vision panel 106 is arranged in 101 openings, opening, and the periphery of organic glass form 106 is solid by organic glass cover board 107 It is scheduled on foreboard 101, sand export 108 and wirerope outlet 109, model is offered on the foreboard 101 on 1 right side of model cabinet 1 left side top of cabinet is removably provided with displacement sensor.

Roll bending installing port is offered in above-mentioned roll bending support plate 201, roll bending structure 204 is arranged in roll bending installing port, volume The two sides of roll bending installing port are arranged in across both ends after roll bending structure 204 for plate active unit rotation axis 205, and roll bending structure 204 is logical It crosses roll bending active unit rotation axis 205 and roll bending support plate 201 is rotatablely connected.

The upper end of above-mentioned roll bending structure 204 is provided with the mounting hole passed through for roll bending active unit rotation axis 205, roll bending Active unit rotation axis 205 passes through the rotation of achievable roll bending structure 204 after mounting hole, since roll bending structure 204 is being tested It at the beginning, is the soil body on the left of model cabinet 1, therefore there are the support of the soil body, the right side of roll bending structure 204 in the left side of roll bending structure 204 For movable gate 203, movable gate 203 when not starting test positioned at the right side of roll bending structure 204, therefore for roll bending structure 204 be also to play the role of support.After on-test, movable gate 203 moves down, and the right side of roll bending structure 204 does not have There is support, therefore the rotation that will turn right, the soil body in the left side after the rotation of roll bending structure 204 will fall right in model cabinet 1 Side.

Above-mentioned further includes gate mobile device 4, and gate mobile device 4 includes braced frame 401, servo motor 402, ball Lead screw 403, guiding axis 404 and wirerope drag connecting plate 405, and servo motor 402 is arranged outside braced frame 401, ball wire Thick stick 403, guiding axis 404 and wirerope dragging connecting plate 405 are arranged in braced frame 401, ball-screw 403 and guiding axis 404 are parallel to each other and both pass through wirerope dragging connecting plate 405, pass through between guiding axis 404 and wirerope dragging connecting plate 405 Linear bearing 406 connects, and servo motor 402 is connected with ball-screw 403, and wirerope drags to be provided with and steel on connecting plate 405 The wirerope connector that cord 301 connects.

Above-mentioned further includes sand reservoir box 5, and sand reservoir box 5 is the cabinet of upper end opening, and sand reservoir box 5 is close to model cabinet 1 and is arranged, and The soil body on the right side of model cabinet 1 is by the sand export 108 of the foreboard 101 of model cabinet 1 using being arranged in 5 back plate of sand reservoir box Connector after enter in sand reservoir box 5, connector is identical with the size of sand export 108.

Above-mentioned lower sheave group 303 is stamped sand loading case bottom support plate 305 above, under sand loading case bottom support plate 305 makes Pulley blocks 303 are avoided contact with the soil body fallen on the right side of model cabinet 1.

Wire rope casing 306, wirerope are provided between above-mentioned pulley blocks support plate 304 and sandbox bottom support plate 305 301, which pass through pulley blocks support plate 304 after top sheave group 302, then passes through sandbox bottom branch into wire rope casing 306 Fagging 305, by being connected after lower sheave group 303 with gate mobile device 4.

The height of above-mentioned sand export 108 and connector is h, where the foreboard 101 and connector where sand export 108 The rear plate thickness summation of sand reservoir box is D, meets the tangent value that h/D is greater than soil angle of repose.

Top sheave group 302 and lower sheave group 303 are equipped with two groups, and the end of wirerope 301 connects the two of movable gate 203 End.

The two sides of 1 upper end opening of model cabinet are provided with T-type guide rail, and the displacement sensor of 1 left side top of model cabinet is logical It crosses displacement transducer mounting bracket to fix, and displacement transducer mounting bracket is bolted and is arranged on T-type guide rail.

It is provided with right-angle reduction device on servo motor 402, passes through shaft coupling phase between right-angle reduction device and ball-screw 403 Even.

Pulley blocks include 7 pulleys, wherein 3 are mounted on the bottom of model cabinet 1 in 4 installation pulley blocks support plates 304 On plate 105.

Wirerope 301 includes 2, and both ends are separately connected 301 connector of wirerope, and wherein one end is mounted on movable gate On 203, one end is mounted on wirerope dragging connecting plate, and is supported and conducted by pulley blocks；

Shaft coupling one end connects 403 drive mechanism of ball-screw, and the other end connects right-angle reduction device.

Roll bending structure 204 is formed by 9.

Working principle of the utility model is:

The present apparatus is placed on geotechnical centrifuge work hanging basket platform, fills model ground in 1 left side cavity of model cabinet The soil body, to guarantee that the roll bending structure 204 of model cabinet 1 is smoothly overturn, before on-test to the right by first layer roll bending structure 204 Fold, 203 top braces of movable gate live the roll bending structure 204 after first layer fold, and make first layer roll bending structure 204 and live Dynamic gate 203 (roll bending support plate) keeps vertical；Wirerope is driven to drag connecting plate toward model cabinet 1 by servo motor 402 The movement of foreboard direction, wirerope 301 drive movable gate 203 to be moved down into second piece of roll bending knot by wirerope guiding mechanism The position of structure 204, second piece of roll bending structure 204 smoothly fold under the action of the centrifugal force, cooperates centrifuge manipulator scraper plate, to mould Type ground carries out first time excavation；When can detect first time excavation of foundation pit by the displacement sensor set up on T-type guide rail, Foundation soil body outside foundation pit settles situation；The above movement is repeated, the excavation of deeper soil layer is carried out.

Model clay a part that excavation of foundation pit goes out is by sand loading case bottom support plate 305, left plate 102, the mould of model cabinet 1 The cavity that the foreboard 101 of molding box body 1, the backboard 104 of model cabinet and gate support plate 202 form accommodates, another part model Soil flows into sand reservoir box 5 from sand export.

In hypergravity geotechnical centrifuge, working space is needed the length of 203 actuator of movable gate than relatively limited Direction is installed in the width direction of model cabinet 1, and 301 one end of wirerope is connected movable gate 203, other end connection by the present apparatus The wirerope of gate mobile device drags connecting plate, passes through the pulley and sand loading bottom being mounted in pulley blocks support plate 304 Pulley in portion's support plate 305 realizes the commutation of drawing force.

Gate actuator is driven by servo motor 402, and servo motor 402 drives ball-screw after right-angle reduction reduction of speed 403 drive mechanism rotary motions, 403 structure of ball-screw converts rotational motion to move along a straight line, and wirerope is driven to drag Connecting plate is along 404 horizontal movement of guiding axis.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (9)

1. rolled plate Base Pit Excavation Simulation device under a kind of Elevated Gravity, it is characterised in that: including model cabinet (1) and roll bending Formula model configuration (2), model cabinet (1) are the rectangular box of upper end opening, and rolled plate model configuration (2) is arranged in model cabinet (1) in, and model cabinet (1) is divided into left and right two parts, model cabinet (1) left half places the soil body, rolled plate simulation knot Structure (2) includes roll bending support plate (201) disposed in parallel and gate support plate (202) and positioned at movable gate between the two (203), several rotatable roll bending structures (204) are provided in roll bending support plate (201), movable gate (203) can be in steel wire Raising and lowering under the drive of rope guiding mechanism (3), as movable gate (203) moves down, the roll bending knot positioned at its left side Structure (204) successively turns right, and the gap that the soil body generates after being rotated by roll bending structure (204), which is fallen, enters model cabinet (1) right side.

2. rolled plate Base Pit Excavation Simulation device under Elevated Gravity according to claim 1, it is characterised in that: wirerope Guiding mechanism (3) setting on the right side of the model cabinet (1) in, wirerope guiding mechanism (3) includes wirerope (301) and pulley blocks, Pulley blocks include top sheave group (302) and lower sheave group (303), and top sheave group (302) is arranged by pulley blocks support plate (304) In model cabinet (1) upper end, lower sheave group (303) setting is connected in the bottom of model cabinet (1), one end of wirerope (301) The upper end of movable gate (203), then by being pierced by model cabinet (1) after top sheave group (302), lower sheave group (303), with lock Door mobile device (4) is connected, and gate mobile device (4) pulls wirerope (301) to realize moving up and down for movable gate (203).

3. rolled plate Base Pit Excavation Simulation device under Elevated Gravity according to claim 1, it is characterised in that: model casing Body (1) includes foreboard (101), left plate (102), right side plate (103), backboard (104) and bottom plate (105), and foreboard (101) is opened Mouthful, organic glass vision panel (106) is arranged in opening, and the periphery of organic glass form (106) is solid by organic glass cover board (107) It is scheduled on foreboard (101), is located on the foreboard (101) on the right side of model cabinet (1) and offers sand export (108) and wirerope outlet (109), top is removably provided with displacement sensor on the left of model cabinet (1).

4. rolled plate Base Pit Excavation Simulation device under Elevated Gravity according to claim 1, it is characterised in that: roll bending branch Roll bending installing port is offered on fagging (201), roll bending structure (204) is arranged in roll bending installing port, the rotation of roll bending active unit Axis (205) passes through roll bending structure (204), and the two sides of roll bending installing port are arranged in both ends afterwards, and roll bending structure (204) passes through roll bending work Moving cell rotation axis (205) and roll bending support plate (201) are rotatablely connected.

5. rolled plate Base Pit Excavation Simulation device under Elevated Gravity according to claim 1, it is characterised in that: further include Gate mobile device (4), gate mobile device (4) include braced frame (401), servo motor (402), ball-screw (403), Guiding axis (404) and wirerope dragging connecting plate (405), servo motor (402) setting braced frame (401) outside, ball wire Thick stick (403), guiding axis (404) and wirerope dragging connecting plate (405) setting are in braced frame (401), ball-screw (403) It is parallel to each other with guiding axis (404) and both passes through wirerope dragging connecting plate (405), guiding axis (404) and wirerope dragging connect It is connected between fishplate bar (405) by linear bearing (406), servo motor (402) is connected with ball-screw (403), and wirerope drags The wirerope connector connecting with wirerope (301) is provided on dynamic connecting plate (405).

6. rolled plate Base Pit Excavation Simulation device under Elevated Gravity according to claim 3, it is characterised in that: further include Sand reservoir box (5), sand reservoir box (5) are the cabinet of upper end opening, and sand reservoir box (5) is close to model cabinet (1) setting, and model cabinet (1) soil body on the right side of is by the sand export (108) of the foreboard (101) of model cabinet (1) using being arranged in sand reservoir box (5) back plate On connector after enter in sand reservoir box (5), connector is identical with the size of sand export (108).

7. rolled plate Base Pit Excavation Simulation device under Elevated Gravity according to claim 2, it is characterised in that: lower sheave Group (303) is stamped sand loading case bottom support plate (305) above, sand loading case bottom support plate (305) make lower sheave group (303) with The soil body fallen on the right side of model cabinet (1) avoids contact with.

8. rolled plate Base Pit Excavation Simulation device under Elevated Gravity according to claim 7, it is characterised in that: pulley blocks It is provided between support plate (304) and sandbox bottom support plate (305) wire rope casing (306), cunning in wirerope (301) process Wheel group (302) passes through pulley blocks support plate (304) afterwards and then passes through sandbox bottom support plate into wire rope casing (306) (305), it is connected afterwards with gate mobile device (4) by lower sheave group (303).

9. rolled plate Base Pit Excavation Simulation device under Elevated Gravity according to claim 6, it is characterised in that: sand export (108) and the height of connector is h, the back plate of the foreboard (101) where sand export (108) and the sand reservoir box where connector Thickness summation is D, meets the tangent value that h/D is greater than soil angle of repose.