CN-121995033-A - Automatic lifting type test device and method for simulating rock water-rock action

CN121995033ACN 121995033 ACN121995033 ACN 121995033ACN-121995033-A

Abstract

The automatic lifting type test device for simulating the rock water-rock action comprises a rock sample placing table, wherein the rock sample placing table comprises a bottom plate, a rock sample box is arranged on the bottom plate, water inlet and outlet holes are formed in the side walls of the rock sample box, an outer frame is arranged at four corners of the bottom plate, a top plate is fixedly arranged at the upper end of the outer frame, a tension sensor is arranged at the top of the top plate, a top hook ring is arranged on the tension sensor and connected with a lifting device, a drying lamp is arranged at the bottom of the top plate, the lifting device is arranged on a top frame and used for driving the rock sample placing table to move up and down in a soaking area and a drying area, and the soaking area, the drying area and the top frame are sequentially stacked from bottom to top. The invention aims to solve the technical problem of providing an automatic lifting type test device and method for simulating rock water-rock action, which are used for realizing a rock dry-wet circulation simulation test, and the circulation times, soaking and drying time and rock water content of the rock water-rock action simulation test are conveniently regulated and controlled through motor power control and tension sensor feedback.

Inventors

ZHANG JINGYU
LI RUOFEI
LIU GAOFU
LIU XU
WANG WENHAO
Qian Xinzhi
LI JIACHENG
LIU PAN
LUO ZUOSEN

Assignees

三峡大学

Dates

Publication Date: 20260508
Application Date: 20260119

Claims (10)

1. The utility model provides an automatic lifting type test device for simulating rock water-rock action, which is characterized by comprising a rock sample placing table (100), the rock sample placing table (100) comprises a bottom plate (110), a rock sample box (120) is arranged on the bottom plate (110), water inlet and outlet holes (122) are arranged on the side wall of the rock sample box (120), outer frames (130) are arranged at four corners of the bottom plate (110), a top plate (140) is fixedly arranged at the upper end of the outer frames (130), a tension sensor (150) is arranged at the top of the top plate (140), a top hook ring (151) is arranged on the tension sensor (150), the top hook ring (151) is connected with a lifting device (200), and a drying lamp (141) is arranged at the bottom of the top plate (140); The lifting device (200) is arranged on the top frame (500) and is used for driving the rock sample placing table (100) to move up and down in the soaking area (300) and the drying area (400), and the soaking area (300), the drying area (400) and the top frame (500) are stacked in sequence from bottom to top.
2. An automatic lifting test device for simulating rock water-rock action according to claim 1, characterized in that the lifting device (200) comprises a motor (210), an output shaft of the motor (210) is connected with a cable winch (230), a cable (240) is wound on the cable winch (230), a lifting hook (250) is connected to the end of the cable (240), and the lifting hook (250) is matched with the top hook ring (151).
3. The automatic lifting type rock water-rock action simulating test apparatus of claim 2, wherein the motor (210) is provided on a fixed stand (220), and the fixed stand (220) is provided on the top frame (500).
4. The automatic lifting type rock water-rock action simulation test device according to claim 2, wherein the soaking area (300) comprises a box body (310), an upper end of the box body (310) is opened, and a water inlet (320) and a water outlet (330) are respectively arranged on the left side and the right side.
5. The apparatus according to claim 4, wherein the drying zone (400) comprises a housing partition (420), and a grid top plate (430) and a grid bottom plate (410) are respectively disposed at the top and bottom of the housing partition (420), and the grid is used for passing through the rock sample placement table.
6. The automatic lifting and lowering type rock water-rock action simulating test apparatus according to claim 5, wherein the top frame (500) comprises a nested frame (540), support columns (510) are provided at four corners of the nested frame (540), a square top frame (520) is provided at an upper end of the support column (510), and a crane beam (530) for placing the lifting and lowering device (200) is provided in the square top frame (520).
7. The automatic lifting and lowering test device for simulating rock water-rock action according to claim 6, wherein a bottom foot support (512) is arranged between the support column (510) and the nested frame (540), and a top diagonal support (513) is arranged between the support column (510) and the square top frame (520).
8. An automatically lifting and lowering test device for simulating rock water-rock action according to claim 1, characterized in that the corners (122) of the rock sample box (120) are rounded.
9. A method of testing an automatically elevating test apparatus for simulating rock water-rock action as set forth in claim 7, comprising the steps of: S1, selecting the number of rock sample placing tables (100) according to the requirement, taking out the rock sample boxes (120), placing each rock sample into the center position of each rock sample box (120), placing the rock sample boxes (120) back to the rock sample placing tables (100), and installing a top tension sensor (150); S2, closing a water outlet (330) of the soaking area (300), connecting the water inlet (320) with a water source, opening the water inlet (320), and closing the water inlet (320) when the water level in the soaking area (300) is proper. S3, splicing the drying area (400) and the soaking area (300), mounting the top frame (500) after the drying area is stable, mounting a lifting device equivalent to the required rock sample placing table (100) on the crane beam (530), starting the motor (210) to retract the cable to a high point, and connecting the top hook ring (151) of the rock sample placing table (100) filled with the rock sample with the lifting hook (250) of the lifting device (200). S4, starting a motor (210) to slowly lower the rock sample placing table (100) to enable the top plate (140) of the rock sample placing table (100) to be flush with the grid bottom plate of the drying area (300), at the moment, performing a soaking test on the rock sample, after the test requirement soaking condition is met, starting the motor (210) to slowly pull up the rock sample placing table (100) to enable the top plate (140) of the rock sample placing table (100) to be flush with the grid top plate (410) of the drying area (300), and starting a drying lamp (141) to dry the rock sample until the test requirement drying condition is met. S5, feeding back tension changes in real time through a tension sensor (150), further calculating the water content change of the rock sample, combining the power output of a motor (210), realizing the control of the number of times of dry and wet cycles, soaking and drying time of the rock sample, and after the test requirements of the group are met, the motor (210) pulls up the rock sample placing table (100) to the highest point, the group of tests are ended, and the unfinished test is continued. S6, after the test is finished, the rock sample box (120) is taken out, the water-rock action simulation test result is observed, the power supply is disconnected after all the tests in the device are finished and the rock sample is taken out, the water outlet (330) is opened, the water source of the water inlet (320) is disconnected, and the device is split from top to bottom and reset.
10. A test method of an automatically elevating test apparatus for simulating rock water-rock action according to claim 9, the method is characterized in that: When a plurality of groups of tests are carried out simultaneously, the water content calculation formula of each group of rock samples is as follows: w=m w /m d =Δm/m d =ΔT/G d ; Wherein w is the water content of the rock, m w is the mass of water contained in the rock, m d is the mass of dry rock, deltam is the front-back mass change amount due to water absorption, deltaT is the tension change amount fed back by a tension sensor, and G d is the gravity applied to the dry rock sample.

Description

Automatic lifting type test device and method for simulating rock water-rock action Technical Field The invention relates to the technical field of hydraulic engineering, in particular to an automatic lifting type test device and method for simulating rock water-rock action. Background In the service period of hydraulic engineering, the rock mass of the bank slope hydro-fluctuation belt is exposed to the water-rock interaction environment for a long time, so that the degradation of mechanical properties and the accumulation effect of damage are easily induced, and the engineering operation safety is directly threatened. The dry and wet cycle times, soaking duration and rock water content are key influencing factors for regulating and controlling the degradation and damage process. Therefore, by designing rock water-rock action simulation tests under the conditions of different dry and wet cyclic gradients and different soaking durations and synchronously monitoring the dynamic evolution characteristics of the rock water content, the erosion mechanism and action strength of each key factor on the shoreside rock-soil mass can be quantitatively revealed. The research not only can provide scientific basis for the evaluation of the stability of the bank slope under the action of water-rock, but also can make up for the limitations of the existing water-rock action simulation test device, further optimizes the related test technology and method, and has important engineering practice and academic reference value. Disclosure of Invention The invention aims to solve the technical problem of providing an automatic lifting type test device and method for simulating rock water-rock action, which are used for realizing a rock dry-wet circulation simulation test, and the circulation times, soaking and drying time and rock water content of the rock water-rock action simulation test are conveniently regulated and controlled through motor power control and tension sensor feedback. In order to solve the technical problems, the technical scheme adopted by the invention is that the automatic lifting type test device for simulating the rock water-rock action comprises a rock sample placing table, wherein the rock sample placing table comprises a bottom plate, a rock sample box is arranged on the bottom plate, water inlet and drain holes are formed in the side wall of the rock sample box, outer frames are arranged at four corners of the bottom plate, a top plate is fixedly arranged at the upper end of the outer frames, a tension sensor is arranged at the top of the top plate, a top hook ring is arranged on the tension sensor, the top hook ring is connected with a lifting device, and a drying lamp is arranged at the bottom of the top plate; The lifting device is arranged on the top frame and used for driving the rock sample placing table to move up and down in the soaking area and the drying area, and the soaking area, the drying area and the top frame are stacked from bottom to top in sequence. The device main body is provided with a rock sample placing table and 16 groups of lifting devices, and can simulate rock water-rock action tests of a plurality of groups of different working conditions simultaneously. The rock sample placing table can freely lift among the soaking area, the drying area and the top frame through the lifting device, so that dry-wet circulation simulation or soaking simulation of the rock sample in the rock sample box is realized. Preferably, the lifting device comprises a motor, an output shaft of the motor is connected with a cable winch, a cable is wound on the cable winch, the end part of the cable is connected with a lifting hook, and the lifting hook is matched with the top hook ring. Preferably, the motor is arranged on a fixed foot rest, and the fixed foot rest is arranged on the top frame. The lifting device is used for fixing the motor on the crane beam of the top frame, the cable winch is vertical and horizontal, and the cable is overlapped with the vertical central line of the rock sample placing table at the vertical central line position of the rock sample placing table, so that the lifting stability of the rock sample placing table is ensured. Preferably, the soaking area comprises a box body, the upper end of the box body is provided with an opening, and the left side and the right side of the box body are respectively provided with a water inlet and a water outlet. The soaking area is positioned at the bottom of the device, the box body is in an open square box style, water levels in the water inlet and water outlet adjusting areas are arranged left and right, the top opening of the box body is slightly larger than the size of the grid bottom plate of the drying area and smaller than the size of the shell partition plate of the drying area, and the drying area is convenient to splice. Preferably, the drying area comprises a shell partition plate, a grid top plate and a grid bottom plate ar