CN103198620A - Debris flow forewarning system and debris flow forewarning method - Google Patents

Debris flow forewarning system and debris flow forewarning method Download PDF

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Publication number
CN103198620A
CN103198620A CN2013101124153A CN201310112415A CN103198620A CN 103198620 A CN103198620 A CN 103198620A CN 2013101124153 A CN2013101124153 A CN 2013101124153A CN 201310112415 A CN201310112415 A CN 201310112415A CN 103198620 A CN103198620 A CN 103198620A
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China
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monitor
air
debris flow
main website
remote measurement
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CN2013101124153A
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Chinese (zh)
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CN103198620B (en
Inventor
曾国强
陈明飞
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成都市西创科技有限公司
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Publication of CN103198620A publication Critical patent/CN103198620A/en
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Publication of CN103198620B publication Critical patent/CN103198620B/en

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Abstract

The invention discloses a debris flow forewarning system and a debris flow forewarning method. The system comprises an earth sound monitor, an air infrasound monitor and a telemeter main station. The method comprises the steps that a time difference of an air infrasound signal to the air infrasound monitor and an earth sound signal to the earth sound monitor is obtained according to propagation speeds of the earth sound signal and the air infrasound signal, the telemeter main station starts timing according to earth sound signal forewarning information sent by the earth sound monitor, whether time of the air infrasound signal, sent by the air infrasound monitor, to the telemeter main station is equal to the time difference of the air infrasound signal and the earth sound signal to the monitor or not is judged, the telemeter main station monitors occurrence of debris flow if the time is equal to the time difference, and the telemeter main station monitors as an interference signal if not. The time difference is formed through distribution of an earth sound and an air infrasound in space distance. Debris flow forewarning precision is greatly improved through the time difference to accurately judge an infrasound signal of the debris flow. The debris flow forewarning system and the debris flow forewarning method have a strong anti-inference ability, are capable of forewarning the occurrence of the debris flow accurately and timely, and ensure safety of lives and properties.

Description

A kind of debris flow early-warning system and method
Technical field
The present invention relates to geology monitoring field, relate in particular to a kind of debris flow early-warning system and method.
Background technology
China is because the geologic condition complexity is the multiple ground of mud-stone flow disaster.Rubble flow is a kind of geologic function between flowing water and landslide, and typical rubble flow is by suspending thick solid debris thing and be rich in flour sand and the thickness mud of clay is formed.Under suitable topographic condition, the solid that a large amount of water bodys soaks in hillside or the ditch bed is piled up material, and its stability is reduced, and the solid accumulation material that is full of moisture moves under the self gravitation effect, has just formed rubble flow.The general outburst of rubble flow breaks with tremendous force suddenly, the stone that portability is huge, and to advance at utmost speed, have powerful energy, thereby greatly destructive.The main harm of rubble flow is destroy by rush of water cities and towns, enterprises and institutions, factory, mine, rural area, causes people and animals' injures and deaths, destroys house and other job facilities, destroys crops, forest and arable land.In addition, rubble flow also can silt the river course up sometimes, not only blocks shipping, also may cause floods.The factor that influences rubble flow intensity is more, and as rubble flow capacity, flow velocity, flow etc., wherein the rubble flow flow is main to the cause disaster influence of degree of rubble flow.In addition, multiple human activity also aggravates the effect of this above-mentioned factor in many-side, promotes the formation of rubble flow.
China just payes attention to the stream monitoring and prediction of mudstone since the sixties, the pacing items that rubble flow forms has been carried out systematic study, proposed the distinguishing rule that Debris Flow Forecast time scale and rubble flow take place, carried out rubble flow monitoring observation and set up the discrimination model that rubble flow takes place.On above-mentioned reason is sunk the basis of studying, also developed a series of rubble flow monitorings and forecast instrument, they have brought into play huge effect in debris flow early-warning.
Existing debris flow early-warning system commonly used generally installs the monitoring point at the rubble flow exit or entrance of a clitch near the residential block.Normally single detection earthquake sounds or air infrasonic sound surpass setting threshold and namely report to the police.
As shown in Figure 1, the infrasound signals that rubble flow 1 causes in formation and motion process is by air borne, and speed arrives air infrasonic sound monitor 2 much larger than mud-rock flow movement speed prior to rubble flow.By air infrasound sensor 3 monitor signals of monitor installation, in case the infrasound signals that monitor monitors greater than setting value, triggers and reports to the police.But the shortcoming of this scheme is disturbed easily, and a lot of infrasound signals is arranged in the air, and what send as the aircraft engine also is infrasound signals, and these infrasonic sounds can't filtering, the initiating system wrong report.
As shown in Figure 2, when rubble flow rubs, clashes into ditch bed and bulkhead wall and produces vibration and along the transmission of sill direction, be referred to as geosound of debris flow from the 1 setting in motion process of rubble flow source, this signal has narrow frequency range.The ground sonic transducer of installing when earthquake sounds monitor 67 monitors the ground acoustical signal of this frequency band, and surpasses setting threshold, triggers and reports to the police.Two shortcomings of this scheme, the first, disturbed easily, if open a mine near the monitor, the massif people is during for activity such as explosion, also can produce same earthquake sounds acoustical signal and propagate into monitor by the rock stratum.The second, fail to report hidden danger, when the subsurface rock tomography 5 from the rubble flow source to monitor occurs, the infrasound signals that rubble flow causes will be absorbed by soil 4, can't arrive monitor ground sonic transducer, monitor is early warning promptly and accurately, may cause the massive losses of life and property.
Summary of the invention
For solving above-mentioned middle problem and the defective that exists, the invention provides a kind of debris flow early-warning system and method.Described technical scheme is as follows:
A kind of debris flow early-warning system comprises:
Earthquake sounds monitor, air infrasonic sound monitor and remote measurement main website; Described
The earthquake sounds monitor is used for the ground acoustical signal that the monitoring rubble flow causes;
Air infrasonic sound monitor is used for the air infrasound signals that the monitoring rubble flow causes;
The remote measurement main website, be used for receiving earthquake sounds monitor and air infrasonic sound monitor institute monitored signal, and the time that arrives the remote measurement main website according to the air infrasound signals that air infrasonic sound monitor sends and air infrasound signals and ground acoustical signal arrive the relation of the mistiming of monitor, judgement rubble flow infrasound signals.
A kind of debris flow early-warning method comprises:
The velocity of propagation of A base area acoustical signal and air infrasound signals obtains the mistiming that the air infrasound signals arrives monitor and ground acoustical signal arrival monitor;
The ground acoustical signal early warning information that B sends by the earthquake sounds monitor, the remote measurement main website starts regularly;
Whether C judges that air infrasound signals that air infrasonic sound monitor sends arrives time of remote measurement main website identical with the mistiming that air infrasound signals and ground acoustical signal arrive between the monitor; Identical, execution in step D, otherwise, execution in step E;
D remote measurement main website monitoring rubble flow takes place;
The monitoring of E remote measurement main website is undesired signal.
The beneficial effect of technical scheme provided by the invention is:
Earthquake sounds monitor and air infrasonic sound monitor, remote measurement main website by complementation constitute; The distribution on space length by earthquake sounds and air infrasonic sound, formation time is poor, according to accurate judgement of mistiming rubble flow infrasound signals, can improve the debris flow early-warning precision greatly; The present invention has high antijamming capability, and accurately and timely the early warning rubble flow takes place, and guarantees the safety of life and property.
Description of drawings
Fig. 1 is the air infrasound sensor system architecture synoptic diagram that prior art provides;
Fig. 2 is the earthquake sounds sensing system structural representation that prior art provides;
Fig. 3 is debris flow early-warning system architecture synoptic diagram;
Fig. 4 is the debris flow early-warning method flow diagram.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing:
Referring to Fig. 3, be the debris flow early-warning system architecture, comprising: earthquake sounds monitor 6, air infrasonic sound monitor 2 and remote measurement main website 31; Described
The earthquake sounds monitor is used for the ground acoustical signal that the monitoring rubble flow causes;
Air infrasonic sound monitor is used for the air infrasound signals that the monitoring rubble flow causes;
The remote measurement main website, be used for receiving earthquake sounds monitor and air infrasonic sound monitor institute monitored signal, and the time that arrives the remote measurement main website according to the air infrasound signals that air infrasonic sound monitor sends and air infrasound signals and ground acoustical signal arrive the relation of the mistiming of monitor, judgement rubble flow infrasound signals.
Above-mentioned earthquake sounds monitor receives and propagates the ground acoustical signal by the ground sonic transducer 7 that arranges; Air infrasonic sound monitor receives and propagates the air infrasound signals by the air infrasound sensor 3 that arranges.
Above-mentioned remote measurement main website is arranged on apart from earthquake sounds monitor and air infrasonic sound monitor identical point place.
Above-mentioned earthquake sounds monitor is arranged on apart from 1 place, rubble flow source; Described air infrasonic sound monitor is arranged on the rubble flow exit or entrance of a clitch near 32 places, residential block.
The earthquake sounds monitor is arranged on apart from place, rubble flow source and is used for the ground acoustical signal that the monitoring rubble flow causes, this monitoring point is nearer apart from the rubble flow source, its ground sonic transducer sees through soil 4 and is deep into subterrane 33 places, has avoided the absorbed possibility of earthquake sounds signal long-distance transmission.Air infrasonic sound monitor is arranged on the rubble flow exit or entrance of a clitch and is used for the air infrasound signals that the monitoring rubble flow causes near the place, residential block.Above-mentioned ground acoustical signal and air infrasound signals are by wireless microwave receiving two monitor information.
Present embodiment also provides the debris flow early-warning method, and as shown in Figure 4, this method comprises the steps:
The velocity of propagation of step 401 base area acoustical signal and air infrasound signals obtains the mistiming that the air infrasound signals arrives monitor and ground acoustical signal arrival monitor;
The ground acoustical signal early warning information that step 402 sends by the earthquake sounds monitor, the remote measurement main website starts regularly;
Whether step 403 judges that air infrasound signals that air infrasonic sound monitor sends arrives time of remote measurement main website identical with the mistiming that air infrasound signals and ground acoustical signal arrive between the monitor; Identical, execution in step 404, otherwise, execution in step 405;
Step 404 remote measurement main website monitoring rubble flow takes place;
The monitoring of step 405 remote measurement main website is undesired signal.
Above-described embodiment principle is:
The earthquake sounds monitor is arranged on the S1 place apart from the rubble flow source, ground acoustical signal velocity of propagation V1 in the rock stratum that rubble flow causes; Air infrasonic sound monitor is arranged on the place apart from rubble flow S2, the air infrasound signals of initiation velocity of propagation V2 in air; And V1〉V2, after rubble flow took place, the ground acoustical signal of initiation and air infrasound signals were taken up in order of priority and are arrived earthquake sounds monitor and air infrasonic sound monitor, its mistiming Δ t=S2/V2-S1/V1.After whole early warning system was installed and come into operation, S1 and S2 fixed, and V1 and V2 fix, so Δ t fixes.After the earthquake sounds monitor monitors the ground acoustical signal, and surpass threshold value, by wireless microwave early warning information is sent to the remote measurement main website, the remote measurement main website begins regularly, if receive the early warning information that air infrasonic sound monitor sends equaling the Δ t time interval, illustrate that then rubble flow takes place, it is any that to be greater than or less than the information that Δ t receives at interval all be undesired signal, so, the air infrasound signals that aircraft engine sends, or open a mine, the massif people is for the ground acoustical signal that activity such as explosion causes, all can not satisfy trigger condition.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (6)

1. a debris flow early-warning system is characterized in that, described system comprises: earthquake sounds monitor, air infrasonic sound monitor and remote measurement main website; Described
The earthquake sounds monitor is used for the ground acoustical signal that the monitoring rubble flow causes;
Air infrasonic sound monitor is used for the air infrasound signals that the monitoring rubble flow causes;
The remote measurement main website, be used for receiving earthquake sounds monitor and air infrasonic sound monitor institute monitored signal, and the time that arrives the remote measurement main website according to the air infrasound signals that air infrasonic sound monitor sends and air infrasound signals and ground acoustical signal arrive the relation of the mistiming of monitor, judgement rubble flow infrasound signals.
2. debris flow early-warning according to claim 1 system is characterized in that described earthquake sounds monitor is arranged on apart from the rubble flow source and locates; Described air infrasonic sound monitor is arranged on the rubble flow exit or entrance of a clitch and locates near the residential block.
3. debris flow early-warning according to claim 1 system is characterized in that, described remote measurement main website is arranged on apart from earthquake sounds monitor and air infrasonic sound monitor identical point place.
4. debris flow early-warning according to claim 1 system is characterized in that, described earthquake sounds monitor and air infrasonic sound monitor are connected with described remote measurement main website by wireless network.
5. a debris flow early-warning method is characterized in that, described method comprises:
The velocity of propagation of A base area acoustical signal and air infrasound signals obtains the mistiming that the air infrasound signals arrives monitor and ground acoustical signal arrival monitor;
The ground acoustical signal early warning information that B sends by the earthquake sounds monitor, the remote measurement main website starts regularly;
Whether C judges that air infrasound signals that air infrasonic sound monitor sends arrives time of remote measurement main website identical with the mistiming that air infrasound signals and ground acoustical signal arrive between the monitor; Identical, execution in step D, otherwise, execution in step E;
D remote measurement main website monitoring rubble flow takes place;
The monitoring of E remote measurement main website is undesired signal.
6. debris flow early-warning method according to claim 5 is characterized in that, described remote measurement main website is arranged on apart from earthquake sounds monitor and air infrasonic sound monitor identical point place.
CN201310112415.3A 2013-04-02 2013-04-02 A kind of debris flow early-warning system and method CN103198620B (en)

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CN103578230A (en) * 2013-11-22 2014-02-12 江兴明 Landslide and debris flow alarm method based on Internet of Things
CN107391833A (en) * 2017-07-17 2017-11-24 中国三峡建设管理有限公司 Macroseism mountain area mud-rock flow liability sentences knowledge method
CN109470775A (en) * 2017-09-08 2019-03-15 中国科学院声学研究所 A kind of device and method of landslide o earth slope infrasound signals identification and field monitoring
CN109799482A (en) * 2017-11-16 2019-05-24 航天科工惯性技术有限公司 Debris flow monitoring system and method based on infrasound triangulation location
CN110415489A (en) * 2019-07-31 2019-11-05 成都市西创科技有限公司 System is monitored based on wireless sensing and the geo-hazard early-warning of the communication technology

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103578230A (en) * 2013-11-22 2014-02-12 江兴明 Landslide and debris flow alarm method based on Internet of Things
CN107391833A (en) * 2017-07-17 2017-11-24 中国三峡建设管理有限公司 Macroseism mountain area mud-rock flow liability sentences knowledge method
CN107391833B (en) * 2017-07-17 2020-09-04 中国三峡建设管理有限公司 Strong earthquake mountain area debris flow easiness identification method
CN109470775A (en) * 2017-09-08 2019-03-15 中国科学院声学研究所 A kind of device and method of landslide o earth slope infrasound signals identification and field monitoring
CN109470775B (en) * 2017-09-08 2020-09-08 中国科学院声学研究所 Soil landslide infrasound signal identification and field monitoring device and method
CN109799482A (en) * 2017-11-16 2019-05-24 航天科工惯性技术有限公司 Debris flow monitoring system and method based on infrasound triangulation location
CN110415489A (en) * 2019-07-31 2019-11-05 成都市西创科技有限公司 System is monitored based on wireless sensing and the geo-hazard early-warning of the communication technology

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