CN106610504A - Controllable active vibration source of liquid carbon dioxide phase change type, and application method thereof - Google Patents
Controllable active vibration source of liquid carbon dioxide phase change type, and application method thereof Download PDFInfo
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- CN106610504A CN106610504A CN201710096918.4A CN201710096918A CN106610504A CN 106610504 A CN106610504 A CN 106610504A CN 201710096918 A CN201710096918 A CN 201710096918A CN 106610504 A CN106610504 A CN 106610504A
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- carbon dioxide
- liquid
- storing tube
- change type
- liquid carbon
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/02—Generating seismic energy
- G01V1/133—Generating seismic energy using fluidic driving means, e.g. highly pressurised fluids; using implosion
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
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Abstract
The invention discloses a controllable active vibration source of a liquid carbon dioxide phase change type, and an application method thereof. A liquid storage pipe (4) is filled with liquid carbon dioxide, wherein one end of the liquid storage pipe (4) is connected with a liquid injection head (1), and the other end of the liquid storage pipe (4) is connected with one end of a safety valve. The other end of the safety valve is connected with a radiant energy head (11), and the interior of the liquid storage pipe (4) is provided with a heating rod (3). The heating rod (3) is electrically connected with an intelligent trigger (2). A micro-vibration sensor (6) is in communication connection with a micro-vibration detection system (7) through a signal fidelity box (5). The micro-vibration detection system (7) is in control communication with a control computer (10), and the intelligent trigger (2) is in communication connection with the control computer (10). The vibration source can be quickly installed, is convenient to use, and can reflect the information of a micro-vibration source well.
Description
Technical field
The present invention relates to a kind of active focus, the controllable active focus of more particularly to a kind of liquid carbon dioxide phase-change type.
The invention further relates to the using method of the controllable active focus of the liquid carbon dioxide phase-change type.
Background technology
As domestic and international mining gradually develops to deep, the excavation of mine working and chamber causes crustal stress collection to neutralize
Redistribution, makes originally stable rock mass progress into labile state.The elastic potential energy gathered in rock mass occurs non-in rock mass
Progressively or suddenly discharged in the form of seismic wave during elastic deformation, so as to produce a series of microseismic event.On highland
In the presence of stress, the disaster such as rock burst that the unexpected release of elastic potential energy is induced seriously constrains the production operation in mine.It is micro-
The information of the microearthquake wave that shake monitoring technology sends when rupture or the changing of the relative positions can occur by monitoring rock, after Treatment Analysis
Can determine hypocentral location, earthquake magnitude size and exergonic information that microseismic event occurs.Therefore, in the ore deposit of deep mining
It is imperative that mountain builds Microseismic monitoring system.
Traditional micro seismic monitoring process, in order to analyze impact of the bursting work to mine working and chamber stability, monitoring
Region it is many near explosion place, mix substantial amounts of explosion events in the data for monitoring, and there is presently no method can be with
Automatic accurate identification explosion events and microseismic event, great majority are required for carrying out manual pickup by people, and the process not only will consume
Take substantial amounts of manpower and materials and financial resources, and need to take a long time.Topmost, the precision of artificial pickup is not high, this
The drawbacks of having very big during instructing mining production.
Therefore, research and develop one kind can Fast Installation and easy to use, the controllable active of microseism focus can be well reflected again
Focus is necessary.
The content of the invention
First technical problem to be solved by this invention be to provide one kind can Fast Installation and easy to use, again can be very
Reflect the controllable active focus of liquid carbon dioxide phase-change type of microseism seismic source information well.
Second technical problem to be solved by this invention is to provide the above-mentioned controllable active of liquid carbon dioxide phase-change type
The using method of focus.
In order to solve above-mentioned first technical problem, the controllable active shake of the liquid carbon dioxide phase-change type that the present invention is provided
Source, is full of liquid carbon dioxide in liquid storing tube, and one end of described liquid storing tube is connected with filling head, described liquid storing tube it is another
End is connected with one end of relief valve, and the other end of described relief valve is connected with penetrates energy head, and heating is provided with described liquid storing tube
Rod, described heating rod is electrically connected with intelligent contactor, and at least one microseismic sensors are by envelope eapsulotomy box and microseismic detection
System is communicated to connect, and described microseismic detection system controls to be connected with control computer, described intelligent contactor and described control
Computer processed is connected using Control on Communication.
Described relief valve is fall lift type spring safety valve.
Between described filling head and liquid storing tube, the relief valve between described heating rod and described liquid storing tube, described
Screwed by thread groove between energy head and be connected with described liquid storing tube and described penetrating, and sealed using sealing gasket.
Described intelligent contactor is 1.
Described heating rod is 1.
Described fall lift type spring safety valve is 1, and can select different models according to the energy of required focus, and then
The amount of liquid carbon dioxide, adds on demand in the described liquid storing tube of adjustment, cost-effective.
In order to solve above-mentioned second technical problem, the controllable active shake of the liquid carbon dioxide phase-change type that the present invention is provided
The using method in source, installs and uses according to the following steps：
A. in advance carbon dioxide injected by liquid storing tube by filling head using special high-pressure pump；
B. by liquid storing tube and filling head, heating rod, intelligent contactor, fall lift type spring safety valve and penetrate can head be connected；
C. the drilling in suitable aperture is drilled through in place to be measured, load after borehole cleaning connected liquid storing tube, filling head, plus
Hot pin, intelligent contactor, fall lift type spring safety valve and penetrate can head, and intelligent contactor is electrically connected with the control computer on ground
Connect；
D. according to demand, an appropriate number of microseismic sensors are selected, is placed in place to be measured, and by microseismic sensors and ground
The envelope eapsulotomy box in face, microseismic detection system and control computer electrical connection, open microseismic detection system and enter data acquisition state；
E. operational control computer, triggers intelligent contactor, makes heating rod be powered, and big calorimetric is produced rapidly, promotes liquid storing tube
In liquid carbon dioxide enter supercriticality, pressure is increased dramatically, when liquid storage overpressure reaches complete opening type spring safety
During the critical pressure of valve, fall lift type spring safety valve is opened, and CO 2 high pressure air-flow Jing fall lift type spring safety valves are from penetrating energy
Head sprays, and to measuring point impact is produced, and forms a controllable active focus；
F. after the completion of gathering, the controllable active focus of liquid carbon dioxide phase-change type is taken out, clears up miscellaneous between all parts
Thing, after the completion of cleaning, the controllable active focus of liquid carbon dioxide phase-change type and other all test apparatuses is taken back.
Using the controllable active focus of the liquid carbon dioxide phase-change type of above-mentioned technical proposal and its using method, in liquid storing tube
Full of liquid carbon dioxide, intelligent contactor and control computer connection, after intelligent contactor triggering, connecting heating rod makes it
It is powered, temperature raises rapidly, produces big calorimetric, and then make the liquid carbon dioxide in liquid storing tube be heated and enter supercriticality,
Pressure is increased dramatically, and when liquid storage overpressure reaches the critical pressure of fall lift type spring safety valve, relief valve is opened, titanium dioxide
Carbon high pressure draught sprays from energy head is penetrated, and to measuring point impact is produced, and forms a controllable active focus.Liquid carbon dioxide phase-change type
The equal reusable edible of each part in controllable active focus, networking is capable of achieving many focus and triggers simultaneously；Liquid carbon dioxide phase-change type
Connection is screwed by thread groove between each part of controllable active focus, and is sealed using sealing gasket, prevent gas leakage, it is ensured that
Focus effect, and it is nearly free from counter productive.Computer controls trigger intelligent contactor, and connecting heating rod makes it be powered, temperature
Degree is rapid to be raised, and produces big calorimetric, and mode of heating is controllable.Relief valve is 1, and can be selected not according to the energy of required focus
Same model, and then the amount of liquid carbon dioxide in liquid storing tube is adjusted, add on demand, it is cost-effective.Without the need for stopping production, will not
Normal production is impacted, it is pollution-free, it is a kind of most safe, most economical, most efficient method without danger, it is also a kind of
The method that negative effect will not be produced.
The present invention the controllable active focus of liquid carbon dioxide phase-change type and its using method advantage be mainly reflected in
Under several aspects：
1st, liquid carbon dioxide wide material sources, and gaseous carbon dioxide is non-flammable explosive gas, whole expansion is penetrated can mistake
Journey is physical process, and no-spark does not produce harmful gass, do not set off an explosion, and dust is few, economic and environment-friendly without slungshot；
2nd, destructive seismic wave is not produced, the impact to surrounding is little；
3rd, whole processing procedure is simple, is capable of achieving to work continuously；
4th, the storage of equipment components, transport, use and removal process is safe；
5th, energy release is controllable, penetrate can direction it is controllable, i.e. focus orientation is controllable, and networking is capable of achieving many focus and triggers simultaneously；
6 compared with explosion focus, and focus frequency of the present invention is low, the real microseismic signals closer in rock；
7th, all parts are reusable in the present invention, greatly reduce cost, quick using process safety, are microseism
Monitoring provides hardware device and supports.
To sum up tell, the present invention be one kind can Fast Installation and easy to use, microseism focus can be well reflected again
The controllable active focus of liquid carbon dioxide phase-change type and its using method.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the present invention using arrangement schematic diagram.
Specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described.
Liquid two is provided in the controllable active focus liquid storing tube 4 of liquid carbon dioxide phase-change type provided referring to Fig. 1, the present invention
Carbonoxide, one end of liquid storing tube 4 is connected with filling head 1, and the other end of liquid storing tube 4 connects with one end of fall lift type spring safety valve 9
Connect, the other end of fall lift type spring safety valve 9 is connected with penetrates energy 11, liquid storing tube 4 is interior to be provided with heating rod 3, heating rod 3 and intelligence
Trigger 2 is electrically connected, and at least one microseismic sensors 6 are communicated to connect by envelope eapsulotomy box 5 with microseismic detection system 7, microseism
Detecting system 7 is connected with the control control of computer 10, and intelligent contactor 2 is connected with control computer 10 using Control on Communication.
Specifically, between filling head 1 and liquid storing tube 4, between heating rod 3 and liquid storing tube 4, fall lift type spring safety valve 9 with
Liquid storing tube 4 and penetrate and connection can be screwed by thread groove between 11, and sealed using sealing gasket 8.
Fall lift type spring safety valve 9 is 1, and can select different models according to the energy of required focus, and then is adjusted
The amount of liquid carbon dioxide, adds on demand in liquid storing tube 4, cost-effective.
Referring to liquid carbon dioxide is full of in Fig. 1, liquid storing tube 4, liquid carbon dioxide is injected into liquid storing tube via filling head 1
In 4.Intelligent contactor 2 and control computer 10 connect, and after the control control intelligent contactor 2 of computer 10 is triggered, make heating rod 3
It is powered, temperature raises rapidly, produces big calorimetric, and then make the liquid carbon dioxide in liquid storing tube 4 be heated and enter supercriticality,
Pressure is increased dramatically, when pressure reaches the critical pressure of fall lift type spring safety valve 9 in liquid storing tube 4, complete opening type spring safety
Valve 9 is opened, and CO 2 high pressure air-flow sprays from energy 7 is penetrated, and to measuring point impact is produced, and forms a controllable active focus.
The control control triggering intelligent contactor 2 of computer 10, makes heating rod 3 be powered, and produces big calorimetric, and temperature is raised rapidly,
Mode of heating is controllable.
In the controllable active focus of liquid carbon dioxide phase-change type that the present invention is provided, all parts can be repeated several times and make
With.
Referring to Fig. 1 and Fig. 2, the using method of the controllable active focus of liquid carbon dioxide phase-change type, specifically according to following step
Suddenly install and use：
A. in advance carbon dioxide injected by liquid storing tube 4 by filling head 1 using special high-pressure pump；
B. by liquid storing tube 4 and filling head 1, heating rod 3, intelligent contactor 2, sealing gasket 8, fall lift type spring safety valve 9 and
Penetrating can 11 connection；
C. the drilling in suitable aperture is drilled through in place to be measured, load after borehole cleaning connected liquid storing tube 4, filling head 1,
Heating rod 3, intelligent contactor 2, sealing gasket 8, fall lift type spring safety valve 9 and penetrate can 11, and by intelligent contactor 2 and ground
Control computer 10 electrically connect；
D. according to demand, select an appropriate number of microseismic sensors 6, be placed in place to be measured, and by microseismic sensors 6 with
The envelope eapsulotomy box 5 on ground, microseismic detection system 7 and control computer 10 are electrically connected, and are opened microseismic detection system 7 and are adopted into data
Collection state；
E. operational control computer 10, triggers intelligent contactor 2, makes heating rod 3 be powered, and big calorimetric is produced rapidly, promotes to deposit
Liquid carbon dioxide in liquid pipe 4 enters supercriticality, and pressure is increased dramatically, when pressure reaches complete opening type bullet in liquid storing tube 4
During the critical pressure of spring relief valve 9, fall lift type spring safety valve 9 is opened, CO 2 high pressure air-flow Jing complete opening type spring safeties
Valve 9 sprays from energy 11 is penetrated, and to measuring point impact is produced, and forms a controllable active focus；
F. after the completion of gathering, the controllable active focus of liquid carbon dioxide phase-change type is taken out, clears up miscellaneous between all parts
Thing, after the completion of cleaning, the controllable active focus of liquid carbon dioxide phase-change type and other all test apparatuses is taken back.
Claims (7)
1. a kind of controllable active focus of liquid carbon dioxide phase-change type, is characterized in that：Liquid titanium dioxide is full of in liquid storing tube (4)
Carbon, one end of described liquid storing tube (4) is connected with filling head (1), the other end of described liquid storing tube (4) and one end of relief valve
Connection, the other end of described relief valve is connected with penetrates energy head (11), and in described liquid storing tube (4) heating rod (3) is provided with, described
Heating rod (3) electrically connect with intelligent contactor (2), at least one microseismic sensors (6) are by envelope eapsulotomy box (5) and microseism
Detecting system (7) is communicated to connect, and described microseismic detection system (7) is connected with control computer (10) control, and described intelligence is touched
Send out device (2) to be connected using Control on Communication with described control computer (10).
2. the controllable active focus of liquid carbon dioxide phase-change type according to claim 1, is characterized in that：Described relief valve
For fall lift type spring safety valve (9).
3. the controllable active focus of liquid carbon dioxide phase-change type according to claim 1 and 2, is characterized in that：Described note
Between heating rod (3) between liquid head (1) and liquid storing tube (4), described and described liquid storing tube (4), described relief valve and institute
The liquid storing tube (4) and described penetrating stated can screw connection between head (11) by thread groove, and be carried out using sealing gasket (8) close
Envelope.
4. the controllable active focus of liquid carbon dioxide phase-change type according to claim 1 and 2, is characterized in that：Described intelligence
Energy trigger (2) is 1.
5. the controllable active focus of liquid carbon dioxide phase-change type according to claim 1 and 2, is characterized in that：Described adds
Hot pin (3) is 1.
6. the controllable active focus of liquid carbon dioxide phase-change type according to claim 1 and 2, is characterized in that：Described is complete
Formula spring safety valve (9) is opened for 1, and different models can be selected according to the energy of required focus.
7. the method that usage right requires the controllable active focus of liquid carbon dioxide phase-change type described in 1, is characterized in that：According under
Row step is installed and used：
A. in advance carbon dioxide is passed through by filling head (1) using special high-pressure pump and injects liquid storing tube (4)；
B. by liquid storing tube (4) and filling head (1), heating rod (3), intelligent contactor (2), fall lift type spring safety valve (9) and penetrate
Can head (11) connection；
C. the drilling in suitable aperture is drilled through in place to be measured, load after borehole cleaning connected liquid storing tube (4), filling head (1),
Heating rod (3), intelligent contactor (2), fall lift type spring safety valve (9) and penetrate can head (11), and by intelligent contactor (2) with ground
Control computer (10) electrical connection in face；
D. according to demand, select an appropriate number of microseismic sensors (6), be placed in place to be measured, and by microseismic sensors (6) with
The envelope eapsulotomy box (5) on ground, microseismic detection system (7) and control computer (10) electrical connection, open microseismic detection system (7) and enter
Enter data acquisition state；
E. operational control computer (10), triggering intelligent contactor (2), makes heating rod (3) be powered, and big calorimetric is produced rapidly, promotes
Liquid carbon dioxide in liquid storing tube (4) enters supercriticality, and pressure is increased dramatically, when the interior pressure of liquid storing tube (4) reaches entirely
When opening the critical pressure of formula spring safety valve (9), fall lift type spring safety valve (9) is opened, and CO 2 high pressure air-flow Jing is opened entirely
Formula spring safety valve (9) sprays from energy head (11) is penetrated, and to measuring point impact is produced, and forms a controllable active focus；
F. after the completion of gathering, the controllable active focus of taking-up liquid carbon dioxide phase-change type, the debris cleared up between all parts, clearly
After the completion of reason, the controllable active focus of liquid carbon dioxide phase-change type and other all test apparatuses are taken back.
Priority Applications (1)
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| CN201710096918.4A CN106610504B (en) | 2017-02-22 | 2017-02-22 | A kind of controllable active focus of liquid carbon dioxide phase-change type and its application method |
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| CN201710096918.4A CN106610504B (en) | 2017-02-22 | 2017-02-22 | A kind of controllable active focus of liquid carbon dioxide phase-change type and its application method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107193039A (en) * | 2017-06-13 | 2017-09-22 | 中南大学 | A kind of mechanical microquake sources and monitoring system and application method |
| CN109239770A (en) * | 2018-09-12 | 2019-01-18 | 中国矿业大学 | One kind is with CO2Big gun is the working face lateral wall seismic detection method of focus |
| CN110579792A (en) * | 2019-10-25 | 2019-12-17 | 河北裕隆机械有限责任公司 | Carbon dioxide phase change controllable seismic source and construction method thereof |
| CN112034506A (en) * | 2019-06-04 | 2020-12-04 | 中国石油天然气集团有限公司 | Carbon dioxide vibration source controller |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1146617A1 (en) * | 1983-10-21 | 1985-03-23 | Izhevsk Mekh Inst | Gas detonation plant |
| WO2003042717A1 (en) * | 2001-11-12 | 2003-05-22 | Poly Systems Pty Limited | Seismic wave generator |
| CN204116614U (en) * | 2014-11-03 | 2015-01-21 | 河南省汉唐进出口有限公司 | Supercritical CO 2 phase transformation CUMULATIVE BLASTING medium and low frequency focus |
| CN104297778A (en) * | 2014-11-03 | 2015-01-21 | 河南省汉唐进出口有限公司 | Low-frequency shock source in supercritical CO2 phase change energy-gathered explosion and shock source collection method |
-
2017
- 2017-02-22 CN CN201710096918.4A patent/CN106610504B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1146617A1 (en) * | 1983-10-21 | 1985-03-23 | Izhevsk Mekh Inst | Gas detonation plant |
| WO2003042717A1 (en) * | 2001-11-12 | 2003-05-22 | Poly Systems Pty Limited | Seismic wave generator |
| CN204116614U (en) * | 2014-11-03 | 2015-01-21 | 河南省汉唐进出口有限公司 | Supercritical CO 2 phase transformation CUMULATIVE BLASTING medium and low frequency focus |
| CN104297778A (en) * | 2014-11-03 | 2015-01-21 | 河南省汉唐进出口有限公司 | Low-frequency shock source in supercritical CO2 phase change energy-gathered explosion and shock source collection method |
Non-Patent Citations (1)
| Title |
|---|
| 董陇军 等: "微震与爆破事件统计识别方法及工程应用", 《岩石力学与工程学报》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107193039A (en) * | 2017-06-13 | 2017-09-22 | 中南大学 | A kind of mechanical microquake sources and monitoring system and application method |
| CN107193039B (en) * | 2017-06-13 | 2019-01-25 | 中南大学 | A kind of mechanical microquake sources and monitoring system and application method |
| CN109239770A (en) * | 2018-09-12 | 2019-01-18 | 中国矿业大学 | One kind is with CO2Big gun is the working face lateral wall seismic detection method of focus |
| CN112034506A (en) * | 2019-06-04 | 2020-12-04 | 中国石油天然气集团有限公司 | Carbon dioxide vibration source controller |
| CN112034506B (en) * | 2019-06-04 | 2024-04-30 | 中国石油天然气集团有限公司 | Carbon dioxide focus controller |
| CN110579792A (en) * | 2019-10-25 | 2019-12-17 | 河北裕隆机械有限责任公司 | Carbon dioxide phase change controllable seismic source and construction method thereof |
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