CN107248264A - A kind of debris flow early-warning device and method for early warning - Google Patents
A kind of debris flow early-warning device and method for early warning Download PDFInfo
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- CN107248264A CN107248264A CN201710509857.XA CN201710509857A CN107248264A CN 107248264 A CN107248264 A CN 107248264A CN 201710509857 A CN201710509857 A CN 201710509857A CN 107248264 A CN107248264 A CN 107248264A
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- debris flow
- pile body
- warning device
- flow early
- early
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000011435 rock Substances 0.000 claims abstract description 33
- 230000001133 acceleration Effects 0.000 claims abstract description 22
- 238000004891 communication Methods 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 239000004575 stone Substances 0.000 description 3
- 238000007405 data analysis Methods 0.000 description 2
- 230000002459 sustained effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- 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
Abstract
The invention discloses a kind of debris flow early-warning device, it is related to for sensing the equipment of mud-rock flow, including the pile body being fixed on hillside, it is characterised in that：Debris flow early-warning device is provided with pile body, the debris flow early-warning device includes CPU, the battery module being connected with CPU, 3-axis acceleration sensor and data communication module.Present invention also offers a kind of debris flow early-warning method.The method have the benefit that：The 1st, 3-axis acceleration sensor is set in pile body, mud-rock flow is determined whether there is by the time difference of detected value between the maximum detected by 3-axis acceleration sensor within a certain period of time and two debris flow early-warning devices, whole device is simple in construction, cost is low, practical；2nd, by setting universal spirit level and level(l)ing device to ensure the installation accuracy of 3-axis acceleration sensor between the first pile body and the second pile body, the detection of degree of precision is realized.
Description
Technical field
The present invention relates to the equipment for sensing mud-rock flow, and in particular to a kind of debris flow early-warning device and method for early warning.
Background technology
Mud-stone flow disaster is one of important kind of China's geological disaster, and three big geological disasters are listed as with avalanche, landslide.
Mud-rock flow is that heavy rain or excessive rain make sandy soil stone reach water saturation and reach liquefaction, under gravity, mud during liquefaction
Sandstone can start displacement and be rolled to low-lying place.The harmfulness of mud-rock flow is that the current of high speed carry substantial amounts of silt and stone,
Its long transmission distance, coverage are wide, destructive power is big, and the translational speed of mud-rock flow is in about 0.5 meter per second to the various of 30 meter per seconds
In the range of, and the movement of most of mud-rock flows is very fast.Therefore, in order to reduce mud-rock flow landslide infringement, it is important that early stage
Sense the generation of mud-rock flow and tackled.In particular, the mountain valley part along natural inclined surface is effectively sensed（First
Anteposition is in the top office in mountain valley）Mobile mud-rock flow, and people to the downstream in mountain valley sends evacuation warning to cause this
People can by warning rapid evacuation.
For this reason, it may be necessary to be installed in the part of mountain valley and operate the equipment for sensing mud-rock flow.
In the prior art, a line is installed on the cross section in mountain valley, cut when mud-rock flow is moved along mountain valley described
Line senses mud-rock flow.However, in the conventional sensors for mud-rock flow using a line, should remain pre- during online installation
Determine tension force.Wild animal, person poultry activity may also cause break alarm in gully, it is more difficult to judge the flow and stream of mud-rock flow
Speed.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of debris flow early-warning device and method for early warning, by setting and examining
The value detected by 3-axis acceleration sensor is surveyed to realize debris flow early-warning.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of debris flow early-warning device, including be fixed on
Pile body on hillside, it is characterised in that：In pile body be provided with debris flow early-warning device, the debris flow early-warning device include CPU,
Battery module, 3-axis acceleration sensor and the data communication module being connected with CPU.
Present invention also offers a kind of debris flow early-warning method, based on above-mentioned debris flow early-warning device, it is characterised in that bag
Include following steps：
A, along hillside short transverse it is arranged at intervals multigroup debris flow early-warning device；
CPU in B, each debris flow early-warning device is passed through with the output of 4Hz -20Hz frequency collection 3-axis acceleration sensor
Data communication module sends data to background server；
Whether it is mud-rock flow that the data and time interval that C, background server are transmitted according to debris flow early-warning device are concluded.
The method have the benefit that：The 1st, 3-axis acceleration sensor is set in pile body, by certain time
The time difference of detected value between maximum and two debris flow early-warning devices detected by interior 3-axis acceleration sensor
To determine whether there is mud-rock flow；2nd, the parameter of multiple pile body shiftings is detected by 3-axis acceleration sensor, and to collecting
Multiple parameters judge whether be sensor social event, if can then to exclude wrong report pre- for the incident of single sensor
It is alert, so as to more accurately make disaster alarm, and by the data analysis and modeling to sensor, the side of mud-rock flow can be predicted
To the earth volume size with generation mud-rock flow, so that the rescue and assessment for disaster provide strong data, whole device structure
Simply, cost is low, practical；3rd, by setting universal spirit level and Level tune to fill between the first pile body and the second pile body
The installation accuracy for ensureing 3-axis acceleration sensor is put, the detection of degree of precision is realized.
The present invention is described in detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the structural representation of debris flow early-warning device embodiment one of the present invention；
Fig. 2 is the structural representation of debris flow early-warning device embodiment two of the present invention；
Fig. 3 is the circuit theory diagrams of debris flow early-warning device of the present invention.
In the accompanying drawings：1 is CPU, and 2 be battery module, and 3 be 3-axis acceleration sensor, and 4 be data communication module, and 5 be to hold
Chamber is put, 6 be the first pile body, and 6-1 is limit chamber, and 7 be the second pile body, and 8 be connecting rod, and 9 be to install storehouse, and 9-1 is stopper slot, and 10 are
Universal joint bulb, 11 be adjustment bolt, and 12 be limiting plate, and 13 be universal spirit level, and 14 be closure, and 15 be locking nut, A generations
Table debris flow early-warning device.
Embodiment
It is crucial the invention provides a kind of debris flow early-warning device, including the pile body being fixed on hillside referring to accompanying drawing 1-3
It is：The battery for including CPU1 provided with debris flow early-warning device A, above-mentioned debris flow early-warning device A in pile body, being connected with CPU1
Module 2,3-axis acceleration sensor 3 and data communication module 4.
Above-mentioned data communication module 4 can be one kind or several in GSM/GPRS modules, bluetooth module, WIFI module
Kind.
Debris flow early-warning device embodiment one：
Referring to accompanying drawing 1 and 3, in the present embodiment, accommodating cavity 5 is provided with pile body, above-mentioned debris flow early-warning device A is arranged on appearance
Put in chamber 5.Closure 14 is provided with the top of pile body.
Pile body is arranged on hillside and then debris flow early-warning device A is installed in accommodating cavity 5 first during specific installation
Closure 14 is finally installed to be sealed.
Debris flow early-warning device embodiment two：
Referring to accompanying drawing 2 and 3, pile body includes the first pile body 6 fixed with hillside and is connected with the first pile body 6 in the present embodiment
The second pile body 7, wherein the second pile body 7 be hollow tubular structure.
The connecting rod 8 for installing storehouse 9 is installed at the top of the hollow intracavitary of the second pile body 7 is set, debris flow early-warning device A is set
Put and installing in storehouse 9, level(l)ing device is provided between connecting rod 8 and pile body to realize the accurate of 3-axis acceleration sensor 3
Install.Simultaneously universal spirit level 13 is provided with the top for installing storehouse 9.
Above-mentioned level(l)ing device includes being fixed on the universal joint bulb 10 of the bottom of connecting rod 8 and through the second pile body
7 and with install storehouse 9 or connecting rod 8 formation adjustment coordinate adjustment bolt 11, on the first pile body 6 be provided with and universal joint bulb 10
The limit chamber 6-1 matched, above-mentioned universal joint bulb 10 is spacing in limit chamber 6- by the limiting plate 12 fixed with the first pile body 6
In 1.Limiting plate 12 is provided with the through hole passed through for connecting rod 8, and the diameter of through hole is more than the external diameter of connecting rod 8 with the company of realization
The omnirange adjustment of extension bar 8.In the specific implementation, connecting rod 8, universal joint bulb 10, installation storehouse 9, the universal spirit level 13 of observation
And debris flow early-warning device A has been assembled in factory, is installed at the scene.
At least three vertical stopper slot 9-1, the adjustment of above-mentioned adjustment bolt 11 are uniformly arranged along the circumference for installing storehouse 9
End is located in stopper slot 9-1.By adjusting the distance and observe universal that each adjustment bolt 11 is threadedly coupled with the second pile body 7
The position of bubble in spirit level 13 so that connecting rod 8 is that pivot is rotated with universal joint bulb 10, until universal level
Bubble is in middle position in instrument 13.Locking nut 15 is additionally provided with each adjustment bolt 11, when adjustment bolt 11 is adjusted
Afterwards, by the way that locking nut 15 is tightened with the second pile body 7, the locking of adjustment bolt 11 and positioning are realized.Finally in the second pile body 7
Top install closure 14.
The debris flow early-warning device installation method of the present embodiment is as follows：
1st, the first pile body 6 is fixed on hillside.Here fixed form can be punched the first pile body 6 on hillside then
The modes such as cement casting are embedded on hillside or gather to be fixed.Need to ensure that it locates substantially when installing the first pile body 6
In plumbness.
2nd, the universal joint bulb 10 being fixed in connecting rod 8 is put into limit chamber 6-1 and by by limiting plate 12 and
The bolt connection of one pile body 6 is to prevent universal ball first 10 from deviating from from limit chamber 6-1.
3rd, the second pile body 7 is connected on the first pile body 6.Specific connected mode can be the connection sides such as bolt connection
Formula.Fluid sealant is scribbled on the contact surface of two parts.
4th, mounting and adjusting bolt 11 and the bar 8 that is rotatably connected make the adjustment end of adjustment bolt 11 be located at peace on the second pile body 7
In the stopper slot 9-1 of binning 9.
5th, connecting rod 8 is caused to be in plumbness according to each adjustment bolt 11 of vision-control of universal spirit level 13.
6th, tightening locking nut 15 prevents adjustment bolt 11 from loosening.
Component, the isopreference of limiting plate 12 for constituting pile body in above example select plastic products so that when there is mud-rock flow
The structure of pile body is destroyed rapidly in the case of generation, debris flow early-warning device is quickly detected data and is transferred to background service
Device.
Present invention also offers a kind of debris flow early-warning method, based on above-mentioned debris flow early-warning device, it includes following step
Suddenly：
A, on the hillside for easily occurring mud-rock flow along hillside short transverse it is arranged at intervals multigroup debris flow early-warning device：Every certain
Highly set in one group of debris flow early-warning device, one group of debris flow early-warning device has at least one debris flow early-warning device as needed, when
It should be at when this group of debris flow early-warning device is installed when setting multiple on sustained height and separately a certain distance.
CPU1 in B, each debris flow early-warning device is with the defeated of 4Hz -20Hz frequency collection 3-axis acceleration sensor 3
Go out, and data are sent to background server by data communication module 4；A value can be set in this step, only when three
Value of the output more than setting of axle acceleration sensor 3, just sends data by data communication module 4 to background server.Tool
Body, global array is set up in this step, and CPU1 calculates 3-axis acceleration sensor 3 and collects three axles output physics conjunction value a
[i] and physics conjunction value a [i] is transferred to background server, wherein a [i]=If, a [i]>5kg/
m2, then the probability for occurring mud-rock flow can be big.When there is mud-rock flow generation, debris flow early-warning device first it is detected that be to have vibration,
Then 3-axis acceleration sensor 3 detects big physics conjunction value after whole pile body is destroyed.
Whether it is mud-rock flow that the data and time interval that C, background server are transmitted according to debris flow early-warning device are concluded.Backstage
Server collect multiple parameters judge whether be sensor social event, if the incident of single sensor then may be used
Wrong report early warning is excluded, so as to more accurately make disaster alarm, and by the data analysis and modeling to sensor, can be predicted
The direction of mud-rock flow and the earth volume size for occurring mud-rock flow, so that the rescue and assessment for disaster provide strong data.
Background server can first determine whether the value that this group of debris flow early-warning device in sustained height is exported, and work as major part
Or whole 3-axis acceleration sensors 3 collect three axles output physics conjunction value a [i]>5kg/m2When then judge to might have mud
Rock glacier occurs, and can send alarm signal to the warning device at hillside, otherwise records this event and notifies local employee to carry out
Check, detect debris flow early-warning device in scene；When server judges to might have mud-rock flow, and background server is obtained
The physics conjunction value exported along every group of debris flow early-warning device at hillside short transverse interval gradually increases and time interval gradually subtracts
It is small, then judge occur mud-rock flow.
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that：Still
The embodiment of the present invention can be modified or equivalent substitution is carried out to some technical characteristics；Without departing from this hair
The spirit of bright technical scheme, it all should cover among claimed technical scheme scope of the invention.
Claims (10)
1. a kind of debris flow early-warning device, including the pile body being fixed on hillside, it is characterised in that：It is pre- provided with mud-rock flow in pile body
Alarm device, the debris flow early-warning device includes CPU（1）With CPU（1）Connected battery module（2）, 3-axis acceleration sensing
Device（3）And data communication module（4）.
2. debris flow early-warning device according to claim 1, it is characterised in that：The data communication module（4）It is GSM/
One or more in GPRS modules, bluetooth module, WIFI module.
3. debris flow early-warning device according to claim 1, it is characterised in that：Accommodating cavity is provided with pile body（5）, the mud
Rock glacier prior-warning device is arranged on accommodating cavity（5）It is interior.
4. debris flow early-warning device according to claim 1, it is characterised in that：The pile body includes first fixed with hillside
Pile body（6）And with the first pile body（6）The second connected pile body（7）, second pile body（7）For hollow tubular structure.
5. debris flow early-warning device according to claim 4, it is characterised in that：In the second pile body（7）Hollow intracavitary set
Top is provided with installation storehouse（9）Connecting rod（8）, the debris flow early-warning device, which is arranged on, installs storehouse（9）It is interior, in the connection
Bar（8）Level(l)ing device is provided between pile body；The level(l)ing device includes being fixed on connecting rod（8）The universal joint of bottom
Bulb（10）And through the second pile body（7）And with installing storehouse（9）Or connecting rod（8）Form the adjustment bolt that adjustment coordinates
（11）, in the first pile body（6）It is provided with and universal joint bulb（10）The limit chamber matched（6-1）, the universal joint bulb
（10）By with the first pile body（6）Fixed limiting plate（12）It is spacing in limit chamber（6-1）It is interior.
6. debris flow early-warning device according to claim 5, it is characterised in that：Along installation storehouse（9）Circumference be uniformly arranged to
Few three vertical stopper slots（9-1）, the adjustment bolt（11）Adjustment end be located at stopper slot（9-1）It is interior.
7. debris flow early-warning device according to claim 5, it is characterised in that：Storehouse is being installed（9）Top be provided with universal water
Quasi- instrument（13）.
8. the debris flow early-warning device according to claim any one of 1-7, it is characterised in that：It is provided with the top of pile body close
Capping（14）.
9. a kind of debris flow early-warning method, based on the debris flow early-warning device described in claim any one of 1-8, it is characterised in that bag
Include following steps：
A, along hillside short transverse it is arranged at intervals multigroup debris flow early-warning device；
CPU in B, each debris flow early-warning device（1）With 4Hz -20Hz frequency collection 3-axis acceleration sensor（3）It is defeated
Go out, pass through data communication module（4）Data are sent to background server；
Whether it is mud-rock flow that the data and time interval that C, background server are transmitted according to debris flow early-warning device are concluded.
10. debris flow early-warning method according to claim 9, it is characterised in that
Global array is set up in stepb, calculates 3-axis acceleration sensor（3）Collect three axles output physics conjunction value a [i] simultaneously
Physics conjunction value a [i] is transferred to background server, wherein a [i]=；
In step C, if the physics that the debris flow early-warning device along hillside short transverse interval that background server is obtained is exported is closed
Value gradually increases and/or time interval is gradually reduced, and is the social event of multiple sensors, then judges occur mud-rock flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509857.XA CN107248264A (en) | 2017-06-28 | 2017-06-28 | A kind of debris flow early-warning device and method for early warning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509857.XA CN107248264A (en) | 2017-06-28 | 2017-06-28 | A kind of debris flow early-warning device and method for early warning |
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| Publication Number | Publication Date |
|---|---|
| CN107248264A true CN107248264A (en) | 2017-10-13 |
Family
ID=60014988
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710509857.XA Pending CN107248264A (en) | 2017-06-28 | 2017-06-28 | A kind of debris flow early-warning device and method for early warning |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109326088A (en) * | 2018-11-28 | 2019-02-12 | 连云港盛富达建设工程有限公司 | A kind of massif disaster intelligent monitoring early warning system |
| CN110164092A (en) * | 2019-06-28 | 2019-08-23 | 丽水莲都晶格智能科技有限公司 | A kind of anti-landslide warning system of plug-in type |
| CN110491094A (en) * | 2019-08-23 | 2019-11-22 | 贵州大学 | A kind of prior-warning device for mountain landslide supervision |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011012516A (en) * | 2009-07-06 | 2011-01-20 | Railway Technical Res Inst | Device and system for detecting outflow of scouring-protection block |
| CN103646514A (en) * | 2013-12-16 | 2014-03-19 | 湖南华中灾害预警研究开发有限公司 | Wireless self-networking group detection based mudslide early warning sensing device, system and method |
| CN106023530A (en) * | 2016-06-07 | 2016-10-12 | 长安大学 | Heavy rain type diluted debris flow monitoring, forecast and early warning device and method |
| CN106193781A (en) * | 2016-08-25 | 2016-12-07 | 无锡市同腾复合材料有限公司 | Mechanical type device for erecting pole |
| CN205881128U (en) * | 2016-05-09 | 2017-01-11 | 深圳市路路通网络通信有限公司 | Mountain landslide intelligent early warning equipment |
| CN206907199U (en) * | 2017-06-28 | 2018-01-19 | 依塔科技有限公司 | A kind of debris flow early-warning device |
-
2017
- 2017-06-28 CN CN201710509857.XA patent/CN107248264A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011012516A (en) * | 2009-07-06 | 2011-01-20 | Railway Technical Res Inst | Device and system for detecting outflow of scouring-protection block |
| CN103646514A (en) * | 2013-12-16 | 2014-03-19 | 湖南华中灾害预警研究开发有限公司 | Wireless self-networking group detection based mudslide early warning sensing device, system and method |
| CN205881128U (en) * | 2016-05-09 | 2017-01-11 | 深圳市路路通网络通信有限公司 | Mountain landslide intelligent early warning equipment |
| CN106023530A (en) * | 2016-06-07 | 2016-10-12 | 长安大学 | Heavy rain type diluted debris flow monitoring, forecast and early warning device and method |
| CN106193781A (en) * | 2016-08-25 | 2016-12-07 | 无锡市同腾复合材料有限公司 | Mechanical type device for erecting pole |
| CN206907199U (en) * | 2017-06-28 | 2018-01-19 | 依塔科技有限公司 | A kind of debris flow early-warning device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109326088A (en) * | 2018-11-28 | 2019-02-12 | 连云港盛富达建设工程有限公司 | A kind of massif disaster intelligent monitoring early warning system |
| CN110164092A (en) * | 2019-06-28 | 2019-08-23 | 丽水莲都晶格智能科技有限公司 | A kind of anti-landslide warning system of plug-in type |
| CN110164092B (en) * | 2019-06-28 | 2021-04-20 | 南京溧水高新创业投资管理有限公司 | Bayonet landslide alarm system that prevents |
| CN110491094A (en) * | 2019-08-23 | 2019-11-22 | 贵州大学 | A kind of prior-warning device for mountain landslide supervision |
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