CN102562164B - Flood prevention dam system safety monitoring method for blasting of opencast coal mining area and monitoring system - Google Patents
- ️Wed Jun 05 2013
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Publication number
- CN102562164B CN102562164B CN 201110436394 CN201110436394A CN102562164B CN 102562164 B CN102562164 B CN 102562164B CN 201110436394 CN201110436394 CN 201110436394 CN 201110436394 A CN201110436394 A CN 201110436394A CN 102562164 B CN102562164 B CN 102562164B Authority
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- dam
- dam body
- sensing unit
- monitoring
- vibration Prior art date
- 2011-12-22 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 title claims abstract description 18
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- 238000005065 mining Methods 0.000 title claims description 9
- 238000005422 blasting Methods 0.000 title abstract description 14
- 230000002265 prevention Effects 0.000 title abstract 3
- 238000004880 explosion Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
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- 230000001133 acceleration Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 230000006378 damage Effects 0.000 abstract description 2
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- 238000011065 in-situ storage Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
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Abstract
The invention discloses a flood prevention dam system safety monitoring method which comprises the steps as follows: measuring points are arranged in preset positions of dam bodies of a flood prevention dam system; sensing units are installed at the measuring points and used for monitoring correlation data of the dam bodies; correlation data of the dam bodies sensed by the sensing units are transmitted to an amplifying converting unit so as to amplify and convert the data; and vibration wave signals are transmitted to a recording device through the amplifying converting unit. The invention further discloses a system for monitoring the dam system dynamically, wherein the system comprises the sensing units, the amplifying converting unit and the recording device. Through the adoption of the method and the system, the vibration that is generated in each blasting can be detected accurately, and the characteristics, the propagation rule, the influence on a dam, the damage mechanism and the like of blasting earthquake waves can be analyzed and mastered through the monitoring of blasting vibration, so that the safety operation for earthwork stripping loosening blasting of a whole strip mine can be guided.
Description
Technical field
The present invention relates to safety monitoring method and the monitoring system of flood dam system, relating in particular to a kind of flood dam for the strip coal mining district is safety monitoring method and monitoring system.
Background technology
Along with the Chinese society rapid development of economy, to the increase day by day of energy demand, safe coal, high-efficiency mining become the important topic of coal industry.Strip mining transformation has safety, efficient, resource recovery advantages of higher, and the colliery that is located in zone, dark steep gully realizes that opencast prerequisite is exactly must system to resolve the problem of waterproof, flood control.Therefore, often need to build flood dam in the bank is.
Be located in the open coal mine of dark steep Gullied, catchment area is large, in case the meteorological condition that rainfall is concentrated occurs, flood dam system builds and the safety guarantee condition that just necessitates.
And, the colliery adopts pinpoint blasting to carry out coal mining more at present, the scale of usually each pinpoint blasting is 1200-1500 tons of explosives, quick-fried offset from opencut very close to, its explosion impact can directly involve Ba Qu, security and stability and reliability that the blasting vibration that ultra-large explosion produces impacts flood dam can produce significant impact, and then make the safe and efficient production of open coal mine have larger potential risk.
Summary of the invention
For the defective of prior art, the purpose of this invention is to provide a kind of can the dynamic monitoring dam be the method and system of safety under strong open coal mine concussion of blasting condition.
Flood dam provided by the invention is that safety monitoring method comprises: on the precalculated position of each dam body that flood dam is, measuring point is set, on each measuring point, sensing unit is installed, be used for the relevant parameter of monitoring dam body; With sensing unit senses to vibration wave be sent to the amplification converter unit, in order to the signal that receives is amplified and changes; The vibration wave signal is sent to tape deck by amplifying converter unit.
The present invention also provides the system of a kind of dynamic monitoring dam system, and described system comprises sensing unit, amplifies converter unit and tape deck, and wherein, an end of sensing unit is connected with dam body, for detection of the relevant parameter of dam body; The other end is connected with the amplification converter unit, in order to the signal that receives is amplified and changes.Amplify converter unit and be connected with tape deck, carry out record so that the signal after will amplifying and change is delivered to tape deck.
With respect to prior art, adopting flood dam of the present invention is safety monitoring method and system, the dam body vibration that produces in the time of can be to every separate explosion detects accurately, monitoring by blasting vibration, can analyze and grasp the feature, propagation law of attenuation of seismic waves and on dam body impact and failure mechanism etc., thereby instruct the whole opencut earthwork to peel off the loosening blasting safety work.
Description of drawings
Fig. 1 is that the flood dam of a kind of specific embodiment of the present invention is the flow chart of safety monitoring method;
Fig. 2 is that the flood dam of a kind of specific embodiment of the present invention is the structured flowchart of safety monitoring system;
Fig. 3 is the position view of the measuring point that arranges on dam body in a kind of specific embodiment of the present invention.
The specific embodiment
As shown in the figure, be in safety monitoring method at the flood dam of a kind of specific embodiment of the present invention, comprise the steps:
Monitoring for dam body is mainly the vibration of monitoring dam body, and the physical quantity that characterizes the vibration of dam body comprises: speed, acceleration, displacement etc.Consider to monitor the vibration of dam structure with monitoring variables such as speed, acceleration in the technical scheme of blasting vibration in the present invention.
At first, in step 101, on the precalculated position of each dam body that flood dam is, measuring point is set, on each measuring point, sensing unit is installed.That is, on the position of needs (for example the side slope position of dam body is other dangerous positions), measuring point is set.Sensing unit can comprise the sensor element that one or more are fit to, and preferably can comprise one or more in water level detecting element, seepage flow detecting element, velocity sensor, acceleration transducer, displacement detector.Described sensor is used for the water level of monitoring dam body and the vibration velocity of seepage flow and measuring point.
In a kind of preferred embodiment of the present invention, as shown in Figure 3, be provided with ten measuring points, select five measuring points wherein to monitor: the center line along dam crest is arranged three measuring points, at dam body two ends, two measuring points is set, i.e. the first measuring point 1 in Fig. 3 and the 3rd measuring point 3; At the dam body center, a measuring point is set, i.e. the second measuring point 2 in Fig. 3.In addition, put two measuring points at the dam base fabric, namely be positioned at the middle point vertical line of dam body center line and two positions on dam foundation outer rim intersection point, be the 4th measuring point 4 and the 5th measuring point 5 in Fig. 3, these 2 have represented respectively the arrival bearing in the first quick-fried district of open coal mine or the second open coal mine quick-fried district and have removed the substrate measuring point of ripple direction.On each measuring point, corresponding sensor has been installed all.
Preferably, bury sensor on measuring point underground in selected representing, the sensor of setting the vibration velocity maximum is trigger sensor, and preferably, the sensor setting of installing on the nearest measuring point in distance blast area is trigger sensor.After trigger sensor detects shock wave, trigger the residue all the sensors by radio transmitting device, the vibration parameters at the different structure position such as research dam body base, middle part, top.In this preferred version, due to the threshold value of having set record, therefore greatly saved the memory space of tape deck.
Under blasting vibration, the bearing capacity of dam body will inevitably reduce, and can adopt the method for in situ test to carry out the bearingtest of dam body, and bearingtest is used for the peak load of determining that dam body can be born, mainly measures the dam body shear-carrying capacity.SEA LEVEL VARIATION exist in the seepage flow situation and frequent vibration under, the bearing capacity of dam body can reduce.In a kind of specific embodiment, can adopt vane shear test to measure the dam body shear-carrying capacity.Vane shear test is a kind of in situ test of measuring the soft clay shear strength with four-bladed vane, the process of this test is: be pressed into four-bladed vane in the weak soil of foot of hole by boring, rotate with uniform speed, record moment required when rotating four-bladed vane, until damage of soil body, thereby calculate the shear strength of being unearthed.The shear strength that is recorded by vane-shear test represents native natural intensity.
After explosion was implemented in the colliery, the vibration wave that explosion produces can reach sensing unit.After sensing unit receives vibration wave, vibration signal is converted to the signal of telecommunication, and arrives follow-up components and parts by corresponding cable transmission.Sensing unit is connected with the amplification converter unit, in order to the signal that receives is amplified and changes.
In step 102, the vibration wave that sensing unit is received is sent to and amplifies converter unit and amplify and change.It is for the ease of the subsequent treatment parts, signal to be processed that vibration signal is amplified with conversion.Amplify to process and for example to comprise that to the increase of signal amplitude, conversion process comprises processing such as the signal of telecommunication being carried out analog-to-digital conversion.
In step 103, the signal after amplification and conversion is sent to tape deck, signal is stored, in order to carry out subsequent analysis and processing.Described subsequent analysis and processing can comprise vibration wave is transported to carries out waveform analysis on computer, calculate vibration velocity or accekeration, analyzes whether exceed setting.
It is safety monitoring system that Fig. 2 shows the disclosed flood dam of a kind of specific embodiment of the present invention, comprises
sensing unit201, amplifies
converter unit202 and tape deck 203.Wherein, an end of
sensing unit201 is connected with dam body, and for detection of the relevant parameter of dam body, being connected of
sensing unit201 and dam body can realize by the mode such as burying underground; The other end is connected with
amplification converter unit202, in order to the signal that receives is amplified and changes.Amplify
converter unit202 and are connected connection with tape deck, carry out record so that the signal after will amplifying and change is delivered to tape deck.
201 is for the parameter of each dam body of monitoring dam system, sensing unit comprises various suitable sensor elements, for example can comprise one or more in water level detecting element, seepage flow detecting element, velocity sensor, acceleration transducer, displacement detector.Described sensor is mainly used in monitoring the water level of dam body and the vibration velocity of seepage flow and measuring point.
The water level detecting element can be gauge, monitors water body height in dam body by gauge.Gauge fixedly is built on corresponding measuring point in dam body, obtains the waterlevel data of corresponding measuring point by reading water level on scale.
The seepage flow testing element is used for the monitoring seepage pressure, and the seepage flow detecting element can be pressure sensor, and the water in dam body not only can produce lateral pressure to dam body, and the seepage pressure that can produce due to water seepage flow.
The displacement that displacement detector occurs for detection of dam body in the explosion situation.Displacement detector can be realized by the GPS device, detects the change in location of dam body before and after explosion by the GPS device, thus the displacement of calculating dam body.
Amplify
converter unit202 and can comprise amplifying circuit and signal conversion circuit, for example amplifier, analog to digital conversion circuit etc.An end that amplifies
converter unit202 is connected with
sensing unit201, and the other end that amplifies
converter unit202 is connected with
tape deck203.
203 can be that any suitable signal records memory device, and preferably, described tape deck can be the equipment such as EXP3850 type blasting vibration recorder, TOPBOX type explosion automatic
recorder.Tape deck203 has data-in port, described data-in port with amplify
converter unit202 and be connected, be used for receiving the signal after amplification, conversion and described signal recorded, store.
Although the present invention is described by above-mentioned preferred embodiment, its way of realization is not limited to above-mentioned embodiment.Should be realized that in the situation that do not break away from purport of the present invention, those skilled in the art can make different variations and modification to the present invention.
Claims (4)
1. a flood dam that is used for strip coal mining district's explosion is safety monitoring method, it is characterized in that, said method comprising the steps of:
A. on the precalculated position of each dam body that flood dam is, a plurality of measuring points are set, described measuring point is arranged on the arrival bearing of explosion wave and goes on each measuring point, sensing unit to be installed on the ripple direction, for dam body related data after sensing bank explosion;
Described sensing unit comprises one or more in water level detecting element, seepage flow detecting element, velocity sensor, acceleration transducer, is used for the water level of monitoring dam body and the vibration velocity of seepage flow and measuring point;
B. after the explosion of bank, the dam body related data that senses is sent to the amplification converter unit, in order to described data are amplified and changed, to generate the vibration wave signal;
C. the vibration wave signal is sent to tape deck, and at predetermined instant, described vibration wave signal is carried out record.
2. method according to claim 1, it is characterized in that, described step c comprises: when the vibration wave signal that produces with the related data of the nearest sensing unit of the blow-up point in strip coal mining district on the arrival bearing in explosion reached predetermined value, the vibration wave data of all sensing units were recorded in beginning in tape deck.
3. a flood dam that is used for the strip coal mining district is safety monitoring system, it is characterized in that, comprising: sensing unit, amplify converter unit and tape deck, wherein, an end of sensing unit is connected with dam body, for detection of the related data of dam body; The other end is connected with the amplification converter unit, amplifies and changes in order to described data are sent to the amplification converter unit; Amplify converter unit and be connected with tape deck, carry out record so that the signal after will amplifying and change is delivered to tape deck;
Described sensing unit comprises one or more in water level detecting element, seepage flow detecting element, velocity sensor, acceleration transducer, is used for the water level of monitoring dam body and the vibration velocity of seepage flow and measuring point.
4. system according to claim 3, is characterized in that, the arrival bearing of explosion with go on the ripple direction, sensing unit to be set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110436394 CN102562164B (en) | 2011-12-22 | 2011-12-22 | Flood prevention dam system safety monitoring method for blasting of opencast coal mining area and monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110436394 CN102562164B (en) | 2011-12-22 | 2011-12-22 | Flood prevention dam system safety monitoring method for blasting of opencast coal mining area and monitoring system |
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| Publication Number | Publication Date |
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| CN102562164A CN102562164A (en) | 2012-07-11 |
| CN102562164B true CN102562164B (en) | 2013-06-05 |
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| CN 201110436394 Active CN102562164B (en) | 2011-12-22 | 2011-12-22 | Flood prevention dam system safety monitoring method for blasting of opencast coal mining area and monitoring system |
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|---|---|---|---|---|
| CN104165688A (en) * | 2014-08-06 | 2014-11-26 | 中钢集团马鞍山矿山研究院有限公司 | Method for fixedly installing mine blasting vibration testing sensors |
| JP2018124222A (en) * | 2017-02-03 | 2018-08-09 | パナソニックＩｐマネジメント株式会社 | Seismic device and security device using the same |
| CN107165678A (en) * | 2017-07-11 | 2017-09-15 | 北京市政建设集团有限责任公司 | Blasting vibration monitoring method for deeply-buried underground water supply pipeline |
| CN110736537B (en) * | 2019-10-25 | 2021-03-12 | 长沙矿山研究院有限责任公司 | Open stope blasting vibration accuracy measuring method |
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