CN110751812A - Multi-mountain area debris flow disaster early warning system based on visual tracking technology - Google Patents
Multi-mountain area debris flow disaster early warning system based on visual tracking technology Download PDFInfo
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- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/10—Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes
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Abstract
The invention relates to a multi-mountain area debris flow disaster early warning system based on a visual tracking technology, which comprises a drainage ditch positioned on a slope surface of a mountain and an inclined rapid flow groove section, wherein the bottom of the rapid flow groove section is provided with anti-skidding platforms which are uniformly distributed along the groove length direction and a camera device at the downstream of the anti-skidding platform at the lowest layer, a hollow upright rod is vertically arranged on the anti-skidding platform, the top of the hollow upright rod is provided with a floating ball, and the floating ball is connected with a steel wire rope which is connected to a plate turnover mechanism positioned between the adjacent anti-skidding platforms through pulleys which pass through the center of the hollow upright rod and the bottom of the rapid flow groove section in. According to the invention, through the arrangement of the hollow upright rod, the floating ball, the backflow groove and the turnover mechanism, the debris flow disaster early warning system in the mountainous area based on the visual tracking technology can play a role in buffering and blocking the debris flow and further prolonging the time to the ground, so that after the early warning of an upper computer, the early warning system can transfer as much time as possible to personnel, ensure the life and property safety of people, and greatly improve the practicability of the early warning system.
Description
Technical Field
The invention belongs to the field of geological disaster early warning, and particularly relates to a debris flow disaster early warning system in mountainous regions based on a visual tracking technology.
Background
Landslide, debris flow is a common gravity erosion geological disaster which occurs in the upstream of rivers and parts of reservoirs in mountainous areas and mountains and ponds in China, the cause of the debris flow is torrential rain or heavy rainfall which causes torrential flood, debris and flood are mixed together to form liquid-solid two-phase flow, solid substances are in a super-saturated state, the volume weight is more than 1.6t/m, and water, soil, sand and stone are mixed to flow forwards under the action of water flow impact force and gravity. The traditional debris flow early warning mainly depends on manual observation, and has the disadvantages of backward mode, large error and high labor intensity, and cannot adapt to the information era of rapid development.
The Chinese patent CN109961612A discloses a debris flow early warning system, which is characterized in that the system can grasp whether the geology is displaced or not through an electronic rainfall detector, a temperature and humidity detector and an electronic water level detector which are arranged at a plurality of positions such as a hillside, a river upstream and downstream, and the like, can grasp whether the geology is displaced or not through an electronic rock-soil coordinators and a ground surface inclinometer, can display images on a large monitoring screen through a plurality of geological monitoring cameras, and can realize the early warning and monitoring of the debris flow in an all-dimensional informationization manner by combining the real-time monitoring data of a remote sensing satellite and the like. However, the debris flow early warning system can only play a role of early warning, the investment cost required for realizing the early warning function is quite high, and when the debris flow arrives, the debris flow can not play a role of 'striving for time', and the debris flow early warning system does not greatly contribute to evacuation of people.
Disclosure of Invention
The invention aims to provide a debris flow disaster early warning system in mountainous regions based on a visual tracking technology, which comprises a drainage ditch positioned on a slope surface of a mountain and an inclined rapid flow groove section, wherein the bottom of the rapid flow groove section is provided with anti-skid platforms which are uniformly distributed along the length direction of the groove and a camera device at the downstream of the anti-skid platform at the lowest layer,
a hollow vertical rod is vertically arranged on the anti-skid platform, a floating ball is erected at the top of the hollow vertical rod, the floating ball is connected with a steel wire rope which sequentially passes through a pulley arranged at the center of the hollow vertical rod and the bottom of the rapid trough section and is connected to a plate turning mechanism positioned between adjacent anti-skid platforms, the plate turning mechanism comprises a turning plate hinged on the bottom of the rapid trough, and one side of the turning plate is connected with the steel wire rope and turns towards the mud-rock flow or turns in the same direction as the mud-rock flow when being pulled;
the camera device is configured to transmit the positions of the floating balls on the rapid flow groove section to the upper computer in real time, and the upper computer is configured to trigger alarm when the number of the floating balls with changed positions exceeds a threshold value.
Optionally, a backflow groove located between adjacent anti-skid platforms is formed in the groove bottom of the rapid groove section, and the backflow groove is provided with a backflow part located at the upstream of the groove opening;
the turnover mechanism further comprises a rotating shaft located on the downstream groove edge of the backflow groove, the turnover plate is connected to the downstream groove edge of the backflow groove in a turnover mode through the rotating shaft, the downstream wing plate portion of the turnover plate is overlapped on the groove bottom of the rapid flow groove section, the upstream wing plate portion covers the groove opening of the backflow groove, the upstream edge of the upstream wing plate portion is connected with the tail end of the steel wire rope, and the last pulley of the steel wire rope winding is located on the downstream of the turnover plate.
Optionally, a sulfur concrete body supported below the upstream wing plate part of the turning plate is built on the downstream groove wall of the backflow groove, an electric heating wire is pre-embedded in the sulfur concrete body, the electric heating wire is electrically connected with a generator through a wire, and a rotor of the generator is in transmission connection with a winding drum for winding the steel wire rope.
Optionally, the sulphur concrete body is L-shaped, the vertical side is fixed on the downstream groove wall of the reflux groove, the transverse side is supported below the upstream wing plate part of the turning plate, and the thickness of the transverse side is smaller than that of the vertical side.
Optionally, a rubber water stop strip is clamped in a matching gap between the upstream wing plate part of the turning plate and the groove edge of the backflow groove.
Optionally, the downstream of the rapid flow groove section is communicated with an energy dissipation well, and the wall of the energy dissipation well is made of reinforced concrete.
Optionally, the torrent channel section has more than two sections, and torrent channel section, energy dissipation well, linkage segment and changeover portion distribute alternately.
Optionally, the hollow upright is downwardly inclined.
The invention has the following beneficial effects:
1. according to the invention, through the arrangement of the hollow upright rod, the floating ball, the backflow groove and the turnover mechanism, the debris flow disaster early warning system in the mountainous area based on the visual tracking technology can play a role in buffering and blocking the debris flow and further prolonging the time to the ground, so that after the early warning of an upper computer, the early warning system can transfer as much time as possible to personnel, ensure the life and property safety of people, and greatly improve the practicability of the early warning system.
2. According to the invention, through the arrangement that the rapid flow groove section, the energy dissipation well, the connecting section and the transition section are alternately distributed in the integral structure and the rapid flow groove section is at least two sections, the time of the debris flow from the mountain top to the ground is prolonged as far as possible, so that the time is further strived for personnel transfer, and the practicability of the early warning system is greatly improved.
3. According to the invention, through the matching arrangement of the camera device and the floating ball, the position and the number of the floating balls acquired by the camera device can be reported to the upper computer in the using process, and the upper computer gives an alarm according to the number of the floating balls exceeding the threshold value, so that an early warning effect is achieved.
Drawings
In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings needed to be used in the embodiment will be briefly introduced below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts;
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the turnover mechanism of the present invention.
In the figure: 1. a drainage ditch; 2. a rapid trough section; 3. an anti-skid platform; 4. a hollow upright rod; 5. a floating ball; 6. a reel; 7. turning over a plate; 8. a wire rope; 9. a reflux tank; 10. a rotating shaft; 11. a sulphur concrete body; 12 an energy dissipating well; 13. a connecting section; 14. a transition section; 15. a pulley.
Detailed Description
In order to make the technical purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention are further described below with reference to the accompanying drawings and specific embodiments.
Example 1
Referring to fig. 1-2, the invention provides a debris flow disaster early warning system for mountainous areas based on visual tracking technology, comprising a drainage ditch 1 on the slope of the mountain and an inclined rapid trough section 2, wherein a backflow trough 9 between adjacent anti-skid platforms 3 is arranged on the bottom of the rapid trough section 2, the backflow trough 9 is provided with a backflow part at the upstream of a notch, a sulfur concrete body 11 supported below the upstream wing plate part of a turning plate 7 is built on the downstream trough wall of the backflow trough 9, the sulfur concrete body 11 is in an L shape, the vertical side is fixed on the downstream trough wall of the backflow trough 9, the transverse side is supported below the upstream wing plate part of the turning plate 7, the thickness of the transverse side is smaller than that of the vertical side, the turning plate 7 is matched with a generator, a winding drum 6 and the sulfur concrete body 11 so as to prevent the backflow trough 9 from being blocked when the system is not used, and ensure that the system cannot play a role of buffering due to the blockage of the backflow trough 9 when the system is in a dangerous, rubber water stop strips are clamped in a matching gap between an upstream wing plate part of the turning plate 7 and a groove edge of the backflow groove 9, a heating wire is embedded in a sulfur concrete body 11 and is electrically connected with a generator through a lead, a rotor of the generator is in transmission connection with a winding drum 6 wound around the steel wire rope 8, when a debris flow rushes down from a high position, the floating ball 5 is rushed up to pull the steel wire rope 8 to generate electricity for the generator, so that the heating wire obtains an electric power source, the main component of the sulfur concrete body 11 is sulfur mortar, the sulfur mortar can be decomposed under the condition that the heating wire is electrically conducted to generate heat, so that the support for the turning plate 7 is removed, the turning plate 7 turns downwards due to the traction force of the steel wire rope, the backflow groove 9 is opened, the debris flow rushes into the backflow groove 9 to play a buffering role, and the structure is arranged between every two anti-skid, therefore, the debris flow is buffered and delayed step by step in the undershoot process, and time is provided for personnel transfer;
the bottom of the rapid flow groove section 2 is provided with anti-skid platforms 3 uniformly distributed along the groove length direction and a camera device at the downstream of the lowest layer of anti-skid platform, the downstream of the rapid flow groove section 2 is communicated with an energy dissipation well 12, the wall of the energy dissipation well 12 is made of reinforced concrete, the rapid flow groove section 2 is provided with more than two sections, the rapid flow groove section 2, the energy dissipation well 12, a connecting section 13 and a transition section 14 are alternately distributed, the early warning system prolongs the time of the debris flow from the mountain top to the ground as far as possible through the arrangement that the rapid flow groove section 2, the energy dissipation well 12, the connecting section 13 and the transition section 14 are alternately distributed and the rapid flow groove section 2 is at least provided with two sections in the whole structure, thereby further striving for time for personnel transfer and further greatly improving the practicability of the early warning system;
the antiskid platform 3 is vertically provided with a hollow upright rod 4, the hollow upright rod 4 inclines downwards, the top of the hollow upright rod 4 is provided with a floating ball 5 in a bridging manner, the floating ball 5 is connected with a steel wire rope 8 which sequentially passes through the center of the hollow upright rod 4 and the bottom of the rapid trough section 2 and is connected to a plate turnover mechanism positioned between the adjacent antiskid platforms 3, the plate turnover mechanism comprises a turnover plate 7 hinged on the bottom of the rapid trough section 2, one side of the turnover plate 7 is connected with the steel wire rope 8 and turns over towards the debris flow or in the same direction with the debris flow when being dragged, the turnover mechanism also comprises a rotating shaft 10 positioned on the downstream trough edge of the backflow trough 9, the turnover plate 7 is connected on the downstream trough edge of the backflow trough 9 in a turning manner through the rotating shaft 10, the downstream wing plate part of the turnover plate 7 is lapped on the bottom of the rapid trough section 2, the upstream wing plate part is covered on the notch of the backflow trough 9, and the, the last pulley 15 wound by the steel wire rope 8 is positioned at the downstream of the turning plate 7, the camera device is configured to transmit the positions of the floating balls 5 on the rapid flow groove section 2 to the upper computer in real time, and the upper computer is configured to trigger an alarm when the number of the floating balls 5 with position change exceeds a threshold value.
Example 2
A debris flow disaster early warning system in mountainous regions based on a visual tracking technology comprises drainage ditches 1 located on the slope surface of a mountain and an inclined rapid flow groove section 2, anti-skid platforms 3 evenly distributed along the groove length direction and a camera device at the downstream of the anti-skid platform at the lowest layer are arranged at the bottom of the rapid flow groove section 2, a backflow groove 9 located between adjacent anti-skid platforms 3 is arranged at the bottom of the rapid flow groove section 2, the backflow groove 9 is provided with a backflow part located at the upstream of a notch, a hollow upright rod 4 is vertically arranged on each anti-skid platform 3, the hollow upright rod 4 inclines downwards, a floating ball 5 is erected at the top of each hollow upright rod 4, the floating ball 5 is connected with a pulley 15 sequentially arranged through the center of each hollow upright rod 4 and the bottom of the rapid flow groove section 2 and is connected with a steel wire rope 8 located on a turning plate mechanism located between adjacent anti-skid platforms 3, the turning plate mechanism comprises a turning plate 7 hinged to the bottom of the rapid flow groove, one side of the turning plate 7 is connected with the The turnover mechanism further comprises a rotating shaft 10 positioned on the downstream groove edge of the backflow groove 9, a rubber water stop strip is clamped in a matching gap between an upstream wing plate part of the turnover plate 7 and the groove edge of the backflow groove 9, the turnover plate 7 is connected to the downstream groove edge of the backflow groove 9 in a turnover mode through the rotating shaft 10, the downstream wing plate part of the turnover plate 7 is overlapped on the groove bottom of the rapid flow groove section 2, the downstream of the rapid flow groove section 2 is communicated with an energy dissipation well 12, the well wall of the energy dissipation well 12 is made of reinforced concrete, the rapid flow groove section 2 is provided with more than two sections, the rapid flow groove section 2, the energy dissipation well 12, a connecting section 13 and a transition section 14 are alternately distributed, an upstream wing plate part covers the groove opening of the backflow groove 9, the upstream edge is connected with the tail end of the steel wire rope 8, the last pulley 15 through which the steel wire rope 8 winds is positioned on the downstream of the turnover plate 7, the camera device is configured to transmit the, the upper computer is configured to trigger alarm when the quantity of the floating balls 5 with changed positions exceeds a threshold value, and the upper computer starts to alarm when the quantity of the floating balls 5 with limited quantity exceeds the threshold value, so that the arrival of a people debris flow dangerous case is reminded.
Example 2 differs from example 1 in that: the generator, the winding drum 6 and the sulfur concrete body 11 are removed in the embodiment 2, and when the debris flow arrives, the turning plate 7 is directly turned over by the impact force of the debris flow, so that the buffering and time-delay function is completed.
To sum up, this early warning system is at the in-process of work, when meetting the bad calamity of mud-rock flow, multistage torrent groove section, the energy dissipation well, linkage segment and changeover portion are at first in forming certain hindrance and buffering time delay effect to the mud-rock flow on a large scale, secondly, all be provided with a plurality of backward flow groove 9 on the inclined plane of every torrent groove section 2, thereby play certain hindrance and time delay effect when making the mud-rock flow strike on the low reaches slope inner wall of backward flow groove 9, a plurality of backward flow groove 9 cooperation, the delay time can reach more than half hour, thereby cooperation early warning system, for people's transfer strives for the time, the practicality of this early warning system has further been improved.
Finally, it should be noted that: the above embodiments are merely illustrative and not restrictive of the technical solutions of the present invention, and any equivalent substitutions and modifications or partial substitutions made without departing from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. A debris flow disaster early warning system in mountainous regions based on a visual tracking technology comprises a drainage ditch positioned on a slope surface of a mountain and an inclined rapid flow groove section, and is characterized in that anti-skid platforms which are uniformly distributed along the groove length direction and a camera device at the downstream of the anti-skid platform at the lowest layer are arranged at the bottom of the rapid flow groove section,
a hollow vertical rod is vertically arranged on the anti-skid platform, a floating ball is erected at the top of the hollow vertical rod, the floating ball is connected with a steel wire rope which sequentially passes through a pulley arranged at the center of the hollow vertical rod and the bottom of the rapid trough section and is connected to a plate turning mechanism positioned between adjacent anti-skid platforms, the plate turning mechanism comprises a turning plate hinged on the bottom of the rapid trough, and one side of the turning plate is connected with the steel wire rope and turns towards the mud-rock flow or turns in the same direction as the mud-rock flow when being pulled;
the camera device is configured to transmit the positions of the floating balls on the rapid flow groove section to the upper computer in real time, and the upper computer is configured to trigger alarm when the number of the floating balls with changed positions exceeds a threshold value.
2. The mountainous region debris flow disaster early warning system based on the visual tracking technology as claimed in claim 1, wherein a backflow groove located between adjacent anti-skid platforms is formed in the groove bottom of the rapid groove section, and the backflow groove is provided with a backflow part located at the upstream of the groove opening;
the turnover mechanism further comprises a rotating shaft located on the downstream groove edge of the backflow groove, the turnover plate is connected to the downstream groove edge of the backflow groove in a turnover mode through the rotating shaft, the downstream wing plate portion of the turnover plate is overlapped on the groove bottom of the rapid flow groove section, the upstream wing plate portion covers the groove opening of the backflow groove, the upstream edge of the upstream wing plate portion is connected with the tail end of the steel wire rope, and the last pulley of the steel wire rope winding is located on the downstream of the turnover plate.
3. The visual tracking technology-based mountainous region debris flow disaster early warning system as claimed in claim 2, wherein a sulfur concrete body supported below the upstream wing plate part of the turning plate is built on the downstream tank wall of the backflow tank, a heating wire is pre-embedded in the sulfur concrete body, the heating wire is electrically connected with a generator through a wire, and a rotor of the generator is in transmission connection with a winding drum for winding the steel wire rope.
4. The visual tracking technology-based mountainous region debris flow disaster early warning system as claimed in claim 3, wherein the sulfur concrete body is L-shaped, the vertical side is fixed on the downstream groove wall of the reflux groove, the transverse side is supported below the upstream wing plate part of the turning plate, and the thickness of the transverse side is smaller than that of the vertical side.
5. The mountainous region debris flow disaster early warning system based on the visual tracking technology as claimed in claim 2, wherein a rubber water stop strip is clamped in a matching gap between the upstream wing plate part of the turning plate and the groove edge of the backflow groove.
6. The mountainous region debris flow disaster early warning system based on the visual tracking technology as claimed in any one of claims 1 to 5, wherein an energy dissipation well is communicated with the downstream of the rapid flow trough section, and the wall of the energy dissipation well is made of reinforced concrete.
7. The mountainous region debris flow disaster early warning system based on the visual tracking technology as claimed in claim 6, wherein the torrent groove section has more than two sections, and the torrent groove section, the energy dissipation well, the connecting section and the transition section are alternately distributed.
8. The mountainous region debris flow disaster early warning system based on the visual tracking technology as claimed in any one of claims 1 to 5, wherein the hollow vertical rod is inclined downwards.
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| CN201911042728.XA CN110751812A (en) | 2019-10-30 | 2019-10-30 | Multi-mountain area debris flow disaster early warning system based on visual tracking technology |
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| CN201911042728.XA CN110751812A (en) | 2019-10-30 | 2019-10-30 | Multi-mountain area debris flow disaster early warning system based on visual tracking technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112854125A (en) * | 2021-01-13 | 2021-05-28 | 重庆交通大学 | Debris flow blocking structure and blocking system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070253775A1 (en) * | 2006-05-01 | 2007-11-01 | Terratech Consulting Ltd. | Culvert bundle for stream crossings and flow-through bridge abutments |
| CN203979601U (en) * | 2014-05-20 | 2014-12-03 | 长治市丰雨机械有限公司 | A kind of mechanical float ball water supply valve |
| CN206570770U (en) * | 2016-11-28 | 2017-10-20 | 北京北排装备产业有限公司 | A kind of floating box type weir gate |
| CN206635864U (en) * | 2017-04-01 | 2017-11-14 | 苏州华造建筑设计有限公司 | Rain water collecting system with flood control Waterpower control device |
| CN206638221U (en) * | 2017-04-21 | 2017-11-14 | 河海大学 | A kind of tidal reach water level prior-warning device |
| CN206916686U (en) * | 2017-06-28 | 2018-01-23 | 长江勘测规划设计研究有限责任公司 | A kind of subgrade protection system in debris flow gully |
-
2019
- 2019-10-30 CN CN201911042728.XA patent/CN110751812A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070253775A1 (en) * | 2006-05-01 | 2007-11-01 | Terratech Consulting Ltd. | Culvert bundle for stream crossings and flow-through bridge abutments |
| CN203979601U (en) * | 2014-05-20 | 2014-12-03 | 长治市丰雨机械有限公司 | A kind of mechanical float ball water supply valve |
| CN206570770U (en) * | 2016-11-28 | 2017-10-20 | 北京北排装备产业有限公司 | A kind of floating box type weir gate |
| CN206635864U (en) * | 2017-04-01 | 2017-11-14 | 苏州华造建筑设计有限公司 | Rain water collecting system with flood control Waterpower control device |
| CN206638221U (en) * | 2017-04-21 | 2017-11-14 | 河海大学 | A kind of tidal reach water level prior-warning device |
| CN206916686U (en) * | 2017-06-28 | 2018-01-23 | 长江勘测规划设计研究有限责任公司 | A kind of subgrade protection system in debris flow gully |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112854125A (en) * | 2021-01-13 | 2021-05-28 | 重庆交通大学 | Debris flow blocking structure and blocking system |
| CN112854125B (en) * | 2021-01-13 | 2022-05-27 | 重庆交通大学 | Debris flow blocking structure and blocking system |
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