CN212748961U - Device for simulating impact of falling of high and steep slope boulder on open cut tunnel - Google Patents
Device for simulating impact of falling of high and steep slope boulder on open cut tunnel Download PDFInfo
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- CN212748961U CN212748961U CN202021638140.9U CN202021638140U CN212748961U CN 212748961 U CN212748961 U CN 212748961U CN 202021638140 U CN202021638140 U CN 202021638140U CN 212748961 U CN212748961 U CN 212748961U
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Abstract
The utility model discloses a device for simulating high steep side slope boulder rolls off and strikes open cut tunnel, include: the integrated main body frame is internally provided with a side slope soil body, and the bottom of the side slope soil body is provided with an open cut tunnel; and the precipitation mechanism simulates the law of influence of precipitation on the stability of the high and steep slope, and further simulates the impact test of rock rolling motion on the open cut tunnel. The visual guard plate realizes visualization of the whole process of the boulder test, and the integral main body frame with the coordinates can clearly observe the change of the coordinate position in the boulder motion process.
Description
Technical Field
The utility model belongs to the technical field of geotechnical engineering is relevant, especially, relate to a device and method for simulating high steep slope boulder rolls and falls and assaults the open cut tunnel.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Water conservancy and hydropower engineering, tunnel engineering and the like built in the southwest area of China are more and more, and disaster accidents caused by rock rolling of high and steep slope dangerous rock masses become serious day by day. Rock rolling refers to a dynamic process that individual rock blocks rapidly move downwards along a slope surface through one or a combination of several movement modes of falling, rebounding, jumping, rolling or sliding and the like after being unstable from a side slope and a cliff surface due to some reason, and finally stay down in a relatively gentle zone or near an obstacle. When people move or facilities constructed by people exist in the movement range of the rolling stone and cause certain loss, the rolling stone disaster is formed. The influence of rainfall on the stability of the high and steep slope boulder is great, and the effect of the rainfall on the high and steep slope boulder is mainly reflected in that a great amount of rainwater infiltrates to cause the saturation of an earth and stone layer on the slope and even water is accumulated on a water-resisting layer at the lower part of the slope, so that the weight of the boulder is increased, the shear strength of the earth and stone layer is reduced, and the generation of the rock is caused.
In the process of preventing and controlling the rock rolling disaster, the analysis of the motion law of the rock rolling is a very necessary research direction. The high and steep slope boulder slip is often caused by precipitation. And obtaining the motion track and the speed analysis of the rolling stones is an essential basis for designing related protective measures. Meanwhile, impact of the rolling stone on the tunnel open cut tunnel is simulated to obtain impact force data, and the impact force data analysis has important guiding significance on actual engineering.
The inventor discovers in the research that the experimental device in the past is simple, the function is single, the visualization and the accurate control of precipitation in the test process can not be realized, the dual experimental requirements of the rock rolling motion law and the open cut tunnel impact load analysis can not be met, and the high efficiency, the accuracy and the practicability are lacked.
SUMMERY OF THE UTILITY MODEL
For overcoming the not enough of above-mentioned prior art, the utility model provides a device that is used for simulating high steep slope solitary rock to roll and falls and assaults the open cut tunnel, accurate quantitative precipitation to can carry out accurate record, improve later stage analysis and calculation's accuracy with experimental completion back to the rolling stone removal orbit in the test process.
In order to achieve the above object, one or more embodiments of the present invention provide the following technical solutions:
a device for simulating impact of high and steep slope boulder falling on open cut tunnel comprises:
the integrated main body frame is internally provided with a side slope soil body, and the bottom of the side slope soil body is provided with a open cut tunnel;
the top of the integrated main body frame is provided with a bushing plate, and the bushing plate is connected with the integrated main body frame through an upright post;
the precipitation mechanism comprises a funnel and a water pump, the funnel is located above the bushing, and the water pump pumps water and sends the water to the funnel to simulate precipitation to influence law on stability of the high and steep slope.
According to a further technical scheme, a visual guard plate is arranged on the inner side of the integrated main body frame.
Preferably, the visual fender is a glass fiber reinforced plastic fender.
Further technical scheme, stereoplasm plastic tubing both ends connect water pumper and shower nozzle respectively, the middle part connects the digital display flowmeter, the funnel pass through the support to be fixed on the stereoplasm plastic tubing, the shower nozzle is located inside the funnel, the funnel below be the bushing, the water of shower nozzle sprays on the bushing under the funnel restraint, even precipitation is realized to the bushing.
According to the further technical scheme, the funnel is arranged in an inverted mode, the top is provided with a narrow opening, and the lower portion is provided with a wide opening.
Further technical scheme, integral type main body frame includes the bottom plate, controls curb plate and backplate, and visual backplate fixed connection is in controlling curb plate fretwork department.
According to the further technical scheme, scales are arranged on the side plate of the integrated main body frame, and the coordinate position of the boulder body in the test process is accurately recorded.
According to the further technical scheme, a plurality of drill holes are formed in the side slope soil body and/or the open cut tunnel, and each drill hole is provided with a monitoring element.
One or more embodiments of the utility model provide the following technical scheme:
the method for testing the device for simulating impact of high and steep slope boulder falling on the open cut tunnel comprises the following steps:
fixing an integrated main body frame, and installing a visual baffle plate on the inner side of the main body frame;
a high and steep slope model is arranged above the integrated main body frame bottom plate and is manufactured by simulating real slope surveying and mapping and then reducing the scale;
excavating a side slope soil body, and arranging a prefabricated open cut tunnel at the slope toe of the soil body;
a bushing plate is arranged above the integrated main body frame;
sequentially connecting and gluing a hard plastic pipe, a water pump, a digital display flowmeter, a funnel and a spray head at a rear baffle of the integrated main body frame, wherein the height of the rear baffle is right above the bushing;
turning on a water pump to simulate precipitation;
and recording the motion data of the solitary rock body through the monitoring element.
The above one or more technical solutions have the following beneficial effects:
1. the visual guard plate realizes visualization of the whole process of the boulder test, and the integral main body frame with the coordinates can clearly observe the change of the coordinate position in the boulder motion process.
2. The precipitation mechanism disclosed can observe precipitation flow in real time, and realize accurate control of precipitation.
3. The inverted funnel can control the precipitation spraying range and prevent the precipitation from splashing.
4. The holes of the bushing plate are uniform in size and uniform in arrangement, and water flow is controlled to fall uniformly.
5. The model is manufactured according to the equal-scale reduction of field surveying and mapping, and the pertinence and the accuracy of the test are improved.
6. The slope is built by similar theory and similar materials according to similar ratio fillers, has the same mechanical and physical properties with the actual slope, and can change the slope angle of the slope through cutting by the cutter, thereby improving the efficiency and accuracy of the test.
7. The tunnel four-center circle is simulated by adopting a semi-cylindrical structure to approximate the tunnel four-center circle, and the open cut tunnel model is prefabricated.
8. According to the method, the monitoring element is arranged on the surface of the open cut tunnel in a drilling mode, the stress-strain change of the surface of the open cut tunnel is monitored, and the impact of the isolated stone body on the tunnel portal is fed back.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is a schematic front structural view of an overall structure of an embodiment of the present invention;
FIG. 2 is a schematic side view of the overall structure of the embodiment of the present invention;
fig. 3 is a schematic spatial structure diagram of the overall structure of the embodiment of the present invention;
FIG. 4 is a schematic view of the connection structure of the funnel, the 360-degree water pressure automatic nozzle and the rigid plastic in the middle precipitation mechanism of the present invention;
FIG. 5 is a schematic structural view of a bushing in the precipitation mechanism of the present invention;
in the figure, 1, a one-piece main body frame; 2. a visual baffle; 3. a column; 4. a bushing; 5. a funnel; 6. a rigid plastic tube; 7. a digital display flowmeter; 8. fixing a bracket; 9. a high steep slope model; 10. a tunnel open cut tunnel; 11. a water pump; 12. 360-degree water pressure automatic nozzle.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the case of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.
The utility model provides an overall thought:
visual guard plates are arranged on the left side and the right side of the integrated main body frame; the bottom of the side slope soil body is provided with an open cut tunnel; and a precipitation mechanism is arranged at the top of the integrated main body frame. This device is through designing brand-new structure, can accurate ration precipitation to can carry out accurate record to the stone roll movement track after experimental completion in the experimentation, improve the accuracy of later stage analysis calculation.
Example one
Referring to fig. 1-5, the embodiment discloses a device for simulating impact of high and steep slope solitary rock fall on a cut tunnel, which comprises: the integrated main body frame and the side slope soil body; a visible guard plate is arranged on the inner side of the main body frame; the main body frame surrounds the slope soil body; the bottom of the side slope soil body is provided with an open cut tunnel; the top of the main body frame is provided with a bushing plate, and the bushing plate is connected with the integrated main body frame through two upright posts; a cubic funnel is arranged above the bushing plate; the outside of the integrated main body frame is provided with a water pump, a hard plastic pipe, a digital display flowmeter and a 360-degree water pressure automatic nozzle. The drain plate, the funnel, the water pump, the hard plastic pipe, the flowmeter, the digital display flowmeter and the 360-degree water pressure automatic sprayer form a precipitation mechanism. The simulation device begins to descend through the descending mechanism, and then simulates the influence law of the descending on the stability of the high and steep slope, and further simulates the impact test of rock rolling movement on the open cut tunnel.
In the embodiment, a high and steep slope model 9 is constructed above the integrated main body frame bottom plate 1. The high and steep slope model 9 can be manufactured in an equal-scale reduction mode according to field surveying and mapping through operations such as cutting.
The left side and the right side of the high and steep slope model 9 are side plates of the integrated main body frame 1, and the inner sides of the side plates are fixedly connected with the visual baffle plates 2. The side plate of the integrated main body frame 1 is provided with scales, and the coordinate position of the boulder body in the test process is accurately recorded. The visual guard plate is a glass fiber reinforced plastic guard plate.
The precipitation mechanism comprises a hard plastic pipe which is glued on the integrated main body frame; the two ends of the hard plastic pipe are respectively connected with a water pump and a 360-degree water pressure automatic nozzle, and the middle part of the hard plastic pipe is connected with a digital display flowmeter. The funnel is fixed on the hard plastic pipe through a support, and the 360-degree water pressure automatic nozzle is positioned inside the funnel. The funnel below be the bushing, the water of 360 water pressure automatic sprinkler heads sprays on the bushing under the funnel restraint, the bushing realizes even precipitation. The funnel is handstand setting, top thin mouthful, lower part wide-mouthed.
The top of the integrated main body frame 1 is provided with a bushing 4, and the bushing 4 is connected with the integrated main body frame 1 through two upright posts 3; a cubic funnel 5 is arranged above the bushing 4; the outside of integral type main part frame 1 has water pumper 11, and water pumper 11 is connected with stereoplasm plastic tubing 6, and the other termination of stereoplasm plastic tubing 6 is 360 automatic shower nozzles of water pressure 12, and 360 automatic shower nozzles of water pressure 12 are located inside cube funnel 5, and 6 middle parts of stereoplasm plastic tubing are digital display flowmeter 7.
Integral type main part frame includes the bottom plate, controls curb plate and backplate, and visual backplate fixed connection is in curb plate fretwork department about controlling. The integrated main body frame is made of steel.
The open cut tunnel 10 is arranged on the front side of the high and steep slope model 9, holes are drilled on the surface of the open cut tunnel 10 and/or the slope soil 9, monitoring elements are arranged, the surface stress strain change of the open cut tunnel can be monitored, and the impact of the isolated stone body on the tunnel open cut tunnel is fed back. The open cut tunnel is of a semi-cylindrical structure.
In another embodiment, the above apparatus, the assembling method includes:
a device for simulating impact of high and steep slope boulders on open cut tunnels comprises the following steps:
(1) the integral main body frame 1 is fixed, and the visual baffle plates 2 are arranged on the left side and the right side of the integral main body frame.
(2) A high and steep slope model 9 is arranged above the bottom plate of the integrated main body frame 1. The high and steep slope model is manufactured by scaling down the simulation of real slope surveying and mapping.
(3) A drill bit is used for excavating soil 9 of the high and steep side slope, and a prefabricated open cut tunnel 10 is arranged at the slope toe of the soil. In particular to a slope soil body.
(4) And a bushing plate is arranged above the integrated main body frame. The hard plastic pipe 6 is sequentially connected with a water pump 11, a digital display flowmeter 7 and a 360-degree water pressure automatic spray head 12, the funnel 5 is fixed on the hard plastic pipe 6 through a fixing support 8, and the hard plastic pipe 6 is glued on a rear baffle of the integrated main body frame. The height is directly above the nozzle plate 4.
The method for testing by using the device mainly comprises the following steps:
A. turning on the water pump 11 to simulate precipitation;
B. the automatic 360-degree water pressure spray head 12 is uniformly dropped on the soil body 9 of the high and steep side slope under the restraint of the funnel 5 and the leakage plate 4;
C. and recording various data of the impact of the rolling stones on the soil body 9 of the high and steep slope and the open cut tunnel 10 through a monitoring element.
It will be understood by those skilled in the art that the modules or steps of the present invention described above may be implemented by general purpose computer means, or alternatively, they may be implemented by program code executable by computing means, whereby they may be stored in memory means for execution by computing means, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. The present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (10)
1. A device for simulating high steep side slope solitary rock rolls and falls and assaults the open cut tunnel, characterized by includes:
the integrated main body frame is internally provided with a side slope soil body, and the bottom of the side slope soil body is provided with a open cut tunnel;
the top of the integrated main body frame is provided with a bushing plate, and the bushing plate is connected with the integrated main body frame through an upright post;
the precipitation mechanism comprises a funnel and a water pump, the funnel is located above the bushing, and the water pump pumps water and sends the water to the funnel to simulate precipitation to influence law on stability of the high and steep slope.
2. The device for simulating impact of high and steep slope boulder falling on open cut tunnel according to claim 1, characterized in that a visual protection plate is arranged inside the integrated main body frame.
3. The device for simulating impact of falling of the high and steep slope boulder on the open cut tunnel according to claim 2, wherein the visual protecting plate is a glass fiber reinforced plastic protecting plate.
4. The device for simulating impact of high and steep slope boulder falling on open cut tunnel according to claim 1, wherein a water pump and a hard plastic pipe are arranged outside the integrated main body frame, and the water pump is connected to the spray head through the hard plastic pipe.
5. The device for simulating impact of falling of the high and steep slope boulder on the open cut tunnel as claimed in claim 4, wherein two ends of the hard plastic pipe are respectively connected with a water pump and a spray head, the middle part of the hard plastic pipe is connected with a digital display flowmeter, the funnel is fixed on the hard plastic pipe through a support, the spray head is located inside the funnel, a leakage plate is arranged below the funnel, water of the spray head is sprayed on the leakage plate under the constraint of the funnel, and the leakage plate realizes uniform precipitation.
6. The device for simulating impact of high and steep slope solitary rock fall on open cut tunnel according to claim 1, wherein the funnel is in an inverted arrangement, with a narrow top opening and a wide bottom opening.
7. The device for simulating impact of falling of the high and steep slope boulder on the open cut tunnel according to claim 2, wherein the integrated main body frame comprises a bottom plate, a left side plate, a right side plate and a rear baffle plate, and the visual protection plate is fixedly connected to the hollowed parts of the left side plate and the right side plate.
8. The device for simulating impact of falling of the high and steep slope boulder on the open cut tunnel according to claim 7, wherein scales are arranged on side plates of the integrated main body frame, and coordinate positions of the boulder body in the test process are accurately recorded.
9. The device for simulating impact of high and steep slope boulder falling on open cut tunnel according to claim 1, wherein the slope soil body and/or the open cut tunnel is provided with a plurality of drill holes, and each drill hole is provided with a monitoring element.
10. The device for simulating impact of high and steep slope boulder rolloff on the open cut tunnel according to claim 2, wherein the visual protection plate is a glass fiber reinforced plastic protection plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021638140.9U CN212748961U (en) | 2020-08-07 | 2020-08-07 | Device for simulating impact of falling of high and steep slope boulder on open cut tunnel |
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| CN202021638140.9U CN212748961U (en) | 2020-08-07 | 2020-08-07 | Device for simulating impact of falling of high and steep slope boulder on open cut tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114277858A (en) * | 2021-11-30 | 2022-04-05 | 中国能源建设集团安徽电力建设第一工程有限公司 | Indoor simulation test device for measuring settlement and strain of boulder stratum pipe pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114277858A (en) * | 2021-11-30 | 2022-04-05 | 中国能源建设集团安徽电力建设第一工程有限公司 | Indoor simulation test device for measuring settlement and strain of boulder stratum pipe pile |
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