Geotechnical engineering disturbance simulation test bench

Abstract

The utility model discloses a geotechnical engineering disturbance simulation test bed which comprises a left side plate, the left side plate and a right side plate are connected through a U-shaped supporting plate, a top plate is installed at the top, a top pressure test mechanism is installed in the top plate, an electric telescopic rod is vertically and downwards installed in the middle of the mechanism, and a top pressure plate is installed at the bottom of the telescopic rod. A first pressure sensor is mounted at the bottom of the top pressure plate; a rock-soil side pressure test mechanism is installed on the inner side of the bottom of the U-shaped supporting plate, and a side pressure plate is installed between a left side plate and a right side plate on the two sides of the top of the rock-soil side pressure test mechanism. The lateral pressure plate of the rock-soil lateral pressure test mechanism is used for synchronously carrying out pressure tests on two sides of rock-soil, so that errors of pressure test data of the whole rock-soil caused by too large or too small pressure borne by one surface of the rock-soil are avoided; by arranging the rock-soil top pressure test mechanism, the stress position of the rock-soil top is adjusted, and the situation that data are inaccurate due to the fact that only the center position of the rock-soil top can be subjected to pressure test is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to geotechnical engineering test technical field relates to a geotechnical engineering disturbance simulation test bed. BACKGROUND

[0002] Underground space is often affected by surrounding strata disturbance during construction or use, for example, existing subway lines disturb new lower subway, adjacent foundation pit excavation disturbs underground space, working face coal mining disturbs adjacent roadway, and earthquake disturbs underground space, etc. These disturbances will cause different degrees of deformation or damage of underground engineering, affecting the structure use. Taking mine roadway as an example, the roadway adjacent to the working face will not only be subjected to the static pressure of the overlying strata, but also be affected by the disturbance of the adjacent working face mining.

[0003] The Chinese patent application with the application number 201811596768.4 discloses a geotechnical engineering three-dimensional comprehensive simulation test bed, which comprises a horizontal bottom plate, a left side plate, a rear side plate, a front side plate, a right side plate and an upper side plate. The horizontal bottom plate is located on the horizontal concrete floor. The horizontal bottom plate, the left side plate and the rear side plate are integrally formed. The lower part of the front side plate or the right side plate is provided with an openable and closable door plate. Two parallel first sliding groove plates are longitudinally arranged on the front side of the horizontal bottom plate. Two parallel second sliding groove plates are transversely arranged on the right side of the horizontal bottom plate. Sliding grooves are arranged on the first sliding groove plates and the second sliding groove plates. Sliding blocks matched with the sliding grooves are arranged on the bottom of the front side plate and the right side plate. A vibration motor is detachably arranged on the upper side plate. The front side plate, the right side plate and the upper side plate are connected with a loading device. The geotechnical engineering three-dimensional comprehensive simulation test bed can simulate the test of multiple rock-soil bodies, is convenient to use and saves energy.

[0004] Although the above-mentioned disclosed patent realizes the pressure test of the rock-soil located on both sides and the pressure test of the top, the rock-soil two-side pressure test mechanism needs to be adjusted by multiple groups of hydraulic cylinders, and only one side of the rock-soil can be subjected to the pressure test at a time. The rock-soil top pressure test mechanism can only perform the pressure test on the central position of the rock-soil, resulting in the lack of accuracy of the data of the rock-soil top pressure test. UTILITY MODEL CONTENTS

[0005] The utility model discloses a geotechnical engineering disturbance simulation test bed which has the characteristics of facilitating the pressure application on both sides of the rock-soil at the same time and facilitating the pressure test on the top of the rock-soil at any position.

[0006] To achieve the purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a kind of geotechnical engineering disturbance simulation test bench, including left side plate, the side of left side plate is connected with the longitudinal side of U-shaped support plate, U-shaped support plate longitudinal side other side is equipped with right side plate, the top of left side plate and right side plate is equipped with top plate, top plate inside is equipped with geotechnical top pressure test mechanism, electric telescopic handle is vertically installed in geotechnical top pressure test mechanism middle, electric telescopic handle bottom is equipped with top pressure plate, and the bottom of top pressure plate is equipped with first pressure sensor;The inside of U-shaped support plate bottom is equipped with geotechnical side pressure test mechanism, and side pressure plate is installed between the left side plate and right side plate between geotechnical side pressure test mechanism top two sides.

[0008] As a further preferred technical scheme of the utility model, the geotechnical side pressure test mechanism includes two sets of chute plates located on the two sides of the U-shaped support plate. Any side of any set of chute plates is equipped with a driving assembly. The driving assembly is linked to one end of a double-threaded screw inside the chute plate. The other end of the double-threaded screw extends to the outside of the other chute plate on the other side of the U-shaped support plate. A gear one is installed at the end. The gear one is engaged with one end of a chain. The other end of the chain is internally engaged with a gear two. The double-threaded screw two is provided inside the other set of chute plates and located inside the other set of chute plates. The top of the double-threaded screw one and the double-threaded screw two is equipped with a side pressure plate through a sliding nut.

[0009] Preferably, the driving assembly includes a motor one installed on the side of the chute plate. A pinion is installed on the output end of the motor one. A large gear fixedly connected with the double-threaded screw one is engaged and installed at the bottom of the pinion.

[0010] Preferably, a chute is provided inside the chute plate. The sliding nut is slidingly installed in the chute.

[0011] Preferably, the geotechnical top pressure test mechanism includes a motor two installed on the side of the top plate. The output end of the motor two is located inside the top plate. The end is connected with one end of a screw. The other end of the screw extends to the other inside wall of the top plate. A mounting seat fixedly connected with the electric telescopic handle is installed on the middle of the screw.

[0012] Preferably, the geotechnical top pressure test mechanism further includes a limiting groove provided inside one side of the top plate. A limiting block is slidingly connected in the limiting groove. The limiting block is connected with the top of the mounting seat.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. The utility model discloses a geotechnical side pressure test mechanism. The mechanism can simultaneously perform pressure test on the geotechnical through a set of side pressure plates. The pressure test on the geotechnical can be more accurate. The problem of error in the overall pressure test data of the geotechnical due to the overlarge or over-small pressure on one side of the geotechnical can be avoided.

[0015] 2、 The utility model discloses a rock-soil top pressure test mechanism, which can adjust the stress position of the rock-soil top to avoid inaccurate data when only the central position of the rock-soil top is tested. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic diagram of the utility model rock-soil engineering disturbance simulation test table;

[0017] Figure 2 It is the structure schematic diagram of the utility model rock-soil side pressure test mechanism;

[0018] Figure 3 It is the utility model drive assembly's enlarged view;

[0019] Figure 4 It is the structure schematic diagram of the utility model rock-soil top pressure test mechanism;

[0020] In the drawing: 1, left side plate;2, top plate;3, rock-soil top pressure test mechanism;31, mounting seat;32, screw;33, motor two;34, limit slot;35, limit block;4, right side plate;5, rock-soil side pressure test mechanism;51, drive assembly;511, motor one;512, pinion;513, gear wheel;52, sliding chute plate;53, two-way screw rod one;54, sliding nut;55, gear one;56, chain;57, gear two;58, two-way screw rod two;6, side pressure plate;7, U-shaped support plate;8, electric telescopic rod;9, top pressure plate;10, first pressure sensor. DETAILED DESCRIPTION

[0021] The utility model technical scheme will be described below clearly and completely in combination with the drawings and specific embodiment, and obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment of the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the scope of the utility model protection.

[0022] Reference Figures 1-4The embodiment provides a geotechnical engineering disturbance simulation test table, which comprises a left side plate 1, the side edge of the left side plate 1 is connected with one side of the longitudinal part of a U-shaped support plate 7, the other side of the longitudinal part of the U-shaped support plate 7 is provided with a right side plate 4, the top of the left side plate 1 and the right side plate 4 is provided with a top plate 2, the inside of the top plate 2 is provided with a geotechnical top pressure test mechanism 3, the middle part of the geotechnical top pressure test mechanism 3 is vertically provided with an electric telescopic rod 8, the bottom of the electric telescopic rod 8 is provided with a top pressure plate 9, the bottom of the top pressure plate 9 is provided with a first pressure sensor 10, the inside of the bottom of the U-shaped support plate 7 is provided with a geotechnical side pressure test mechanism 5, and the top of the geotechnical side pressure test mechanism 5 is provided with a side pressure plate 6 between the left side plate 1 and the right side plate 4.

[0023] Specifically, the geotechnical side pressure test mechanism 5 comprises two groups of sliding groove plates 52 located at the two side edges of the U-shaped support plate 7, any side edge of any group of sliding groove plates 52 is provided with a driving assembly 51, one end of the driving assembly 51 located in the inside of the sliding groove plate 52 is connected with one end of a bidirectional screw rod 53, the other end of the bidirectional screw rod 53 extends to the outside of the sliding groove plate 52 on the other side of the U-shaped support plate 7, and the end is provided with a gear 55, the gear 55 is engaged with one end of a chain 56, the other end of the chain 56 is internally engaged and provided with a gear 57, the gear 57 is internally provided with a bidirectional screw rod 58 penetrating through the side wall of the other group of sliding groove plates 52 and located in the inside of the other group of sliding groove plates 52, and the top of the bidirectional screw rod 53 and the bidirectional screw rod 58 is provided with a side pressure plate 6 through a sliding nut 54.

[0024] Through the above technical scheme, the side pressure plate 6 can be adjusted, so that the geotechnical can simultaneously perform pressure test on two surfaces.

[0025] Specifically, the driving assembly 51 comprises a motor 511 installed on the side edge of the sliding groove plate 52, and a pinion 512 is installed at the output end of the motor 511, the bottom of the pinion 512 is engaged and provided with a large gear 513 fixedly connected with the bidirectional screw rod 53.

[0026] Through the above technical scheme, the bidirectional screw rod 53 can be driven to rotate more labor-saving.

[0027] Specifically, the inside of the sliding groove plate 52 is provided with a sliding groove, and the sliding nut 54 is slidingly installed in the sliding groove.

[0028] Through the above technical scheme, the stability of the sliding process of the sliding nut 54 can be improved.

[0029] Specifically, the geotechnical top pressure test mechanism 3 comprises a motor 33 installed on the side edge of the top plate 2, the output end of the motor 33 is located in the inside of the top plate 2, and the end is connected with one end of a screw rod 32, the other end of the screw rod 32 extends to the other inside wall of the top plate 2, and the middle part of the screw rod 32 is provided with a mounting seat 31 fixedly connected with the electric telescopic rod 8.

[0030] By adopting the technical scheme, the position of the top pressure plate 9 can be adjusted conveniently.

[0031] Specifically, the rock-soil top pressure test mechanism 3 further comprises a limiting groove 34 arranged on one side of the top plate 2, and a limiting block 35 is slidably connected in the limiting groove 34, and the limiting block 35 is connected with the top of the mounting seat 31.

[0032] By adopting the technical scheme, the stability of the sliding process of the mounting seat 31 can be improved.

[0033] When the rock-soil engineering disturbance test is performed by using the simulation test bed, the second pressure sensor (prior art, not shown in the figure) is first installed on the side edge of the side pressure plate 6, and the rock-soil is placed on the top center position of the U-shaped support plate 7. The motor one 511 is turned on, and the motor one 511 drives the pinion 512, the gear 513, the bidirectional screw rod one 53, the gear one 55, the chain 56, the gear two 57 and the bidirectional screw rod two 58 in sequence through the output end, and the bidirectional screw rod one 53 and the bidirectional screw rod two 58 drive the sliding nut 54 to move close to each other, so as to drive the side pressure plate 6 to press the rock-soil from the side, and the second pressure sensor on the side edge of the side pressure plate 6 can test the side pressure of the rock-soil, and the second sensor data is transmitted to the external display screen for display, so that the side strength of the rock-soil can be known, and whether the rock-soil of the site can bear the influence of disturbance can be known, so that the deformation of the underground building caused by disturbance and the like can be prevented. When it is necessary to test the top of the rock-soil at the same time, the motor two 33 is turned on, and the motor two 33 drives the screw rod 32 to rotate through the output end, and the screw rod 32 drives the mounting seat 31, the electric telescopic rod 8 and the top pressure plate 9 to move in sequence, and the top pressure plate 9 is moved to the specified position, and then the electric telescopic rod 8 is started to drive the top pressure plate 9 to press the top of the rock-soil, and then the pressure data is detected by the first pressure sensor 10, and the data of the first pressure sensor 10 is transmitted to the external display screen for display, so that the top strength of the rock-soil can be known.

[0034] The structure and use principle of the first pressure sensor 10 and the second pressure sensor in the utility model have been disclosed in the Chinese patent application No. 201811596768.4, and the working principle is that the pressure of the rock-soil is tested by the sensor, the data is connected with the external monitoring control system, and the data is displayed on the display screen for observation by the personnel.

Claims

1. A geotechnical disturbance simulation test rig characterised in that, The utility model provides a rock and soil top and side pressure test mechanism, including left side plate (1), the side of left side plate (1) with U type support plate (7) longitudinal one side meets, and the longitudinal other side of U type support plate (7) is installed right side plate (4), and the top of left side plate (1) and right side plate (4) is installed top plate (2), and the inside of top plate (2) is installed rock and soil top pressure test mechanism (3), and the middle part of rock and soil top pressure test mechanism (3) is installed electric telescopic handle (8) vertically downward, and the bottom of electric telescopic handle (8) is installed top pressure plate (9), and the bottom of top pressure plate (9) is installed first pressure sensor (10), the inside of the bottom of U type support plate (7) is installed rock and soil side pressure test mechanism (5), and the top of rock and soil side pressure test mechanism (5) is installed between the left side plate (1) and right side plate (4) of both sides side pressure plate (6).

2. The geotechnical engineering disturbance simulation test bench according to claim 1, characterized in that, The rock and soil side pressure test mechanism (5) includes two groups of chute plates (52) located on both sides of the U-shaped support plate (7), any side of any group of chute plates (52) is provided with a driving assembly (51), one end of the driving assembly (51) is connected to one end of a bidirectional screw rod (53) inside the chute plate (52), the other end of the bidirectional screw rod (53) extends to the outside of the other chute plate (52) on the other side of the U-shaped support plate (7), and a gear (55) is installed at the end of the bidirectional screw rod (53), the gear (55) is engaged with one end of a chain (56), the other end of the chain (56) is internally engaged with a gear (57), the gear (57) is internally provided with a bidirectional screw rod (58) penetrating through one side wall of the other group of chute plates (52) and located inside the other group of chute plates (52), and the top of the bidirectional screw rod (53) and the bidirectional screw rod (58) is provided with a side pressure plate (6) through a sliding nut (54).

3. The geotechnical disturbance simulation test rig of claim 2, wherein, The driving assembly (51) includes a motor (511) installed on the side of the chute plate (52), a pinion (512) is installed at the output end of the motor (511), and a large gear (513) fixedly connected with the bidirectional screw rod (53) is engaged and installed at the bottom of the pinion (512).

4. The geotechnical disturbance simulation test rig of claim 2, wherein, The inside of the chute plate (52) is provided with a chute, and the sliding nut (54) is slidingly installed in the chute.

5. The geotechnical disturbance simulation test rig of claim 4, wherein, The rock and soil top pressure test mechanism (3) includes a motor (33) installed on the side of the top plate (2), the output end of the motor (33) is located inside the top plate (2), and the end is connected with one end of a screw rod (32), the other end of the screw rod (32) extends to the other inner side wall of the top plate (2), and the middle of the screw rod (32) is provided with a mounting seat (31) fixedly connected with the electric telescopic handle (8).

6. The geotechnical disturbance simulation test rig of claim 5, wherein, The rock and soil top pressure test mechanism (3) further includes a limiting groove (34) arranged inside one side of the top plate (2), a limiting block (35) is slidingly connected in the limiting groove (34), and the limiting block (35) is connected with the top of the mounting seat (31).

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