CN109541679B - Novel artificial seismic source - Google Patents
Novel artificial seismic source Download PDFInfo
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- CN109541679B CN109541679B CN201910034673.1A CN201910034673A CN109541679B CN 109541679 B CN109541679 B CN 109541679B CN 201910034673 A CN201910034673 A CN 201910034673A CN 109541679 B CN109541679 B CN 109541679B
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- cabin section
- oxygen
- combustible gas
- pipe
- seismic source
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 73
- 239000001301 oxygen Substances 0.000 claims abstract description 73
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 73
- 239000007789 gas Substances 0.000 claims abstract description 69
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000005422 blasting Methods 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 239000000565 sealant Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract description 2
- 238000005474 detonation Methods 0.000 abstract description 2
- 238000005192 partition Methods 0.000 abstract description 2
- 239000002360 explosive Substances 0.000 description 10
- 238000001514 detection method Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- SPSSULHKWOKEEL-UHFFFAOYSA-N 2,4,6-trinitrotoluene Chemical compound CC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O SPSSULHKWOKEEL-UHFFFAOYSA-N 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000015 trinitrotoluene Substances 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- -1 TNT explosive Chemical compound 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/10—Aspects of acoustic signal generation or detection
- G01V2210/12—Signal generation
Landscapes
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a novel artificial seismic source, which comprises an outer pipe, wherein an inner pipe which is arranged into a combustible gas cabin section and an oxygen cabin section from left to right in a partition manner is coaxially arranged in the outer pipe, and the combustible gas cabin section and the oxygen cabin section are communicated or disconnected through ball valves; the tail end of the outer tube corresponding to the combustible gas cabin section is provided with an air tap; a gap penetrating through the oxygen pipe is arranged between the oxygen cabin section and the inner wall of the outer pipe, and an igniter for igniting after mixing methane gas and oxygen is arranged on the inner pipe wall of the oxygen cabin section corresponding to the gap; the tail end of the oxygen cabin section is provided with a diaphragm which seals the oxygen cabin section before blasting and is opened to form an airflow channel during blasting; and a controller for controlling the actions of the ball valve and the igniter is also arranged in the gap between the combustible gas cabin section and the outer tube. The invention adopts the combustible gas, and can ensure the full combustion of the combustible gas and the oxygen through the volume proportion design of the combustible gas cabin section and the oxygen cabin section, and the combustible gas reacts with the pure oxygen to release a large amount of heat and the gas achieves the detonation effect.
Description
Technical Field
The invention relates to the technical field of mineral exploration, in particular to an artificial seismic source.
Background
In seismology, a source is the starting point of an earthquake, where a fault begins to fracture, and the vertical projection of the source upward onto the earth's surface is called the epicenter. A seismic source is a region of a certain size, also called the source zone or source volume, where seismic energy is accumulated and released. The earthquakes are divided into natural earthquakes and artificial earthquakes, wherein the artificial earthquakes are earthquakes caused by artificial activities, the earthquakes caused by artificial factors are called artificial earthquakes, and the artificial earthquakes are generally applied to seismic exploration, namely, the characteristics of underground geologic bodies are detected by utilizing the earthquakes caused by the artificial factors.
Artificial sources fall into two categories: one type is an explosive source and the other type is a non-explosive source. In the seismic exploration work, various explosives are used as the seismic source for many years, wherein trinitrotoluene, namely TNT explosive, has good effect and strong explosion capacity and good safety performance; ammonium nitrate explosives may of course also be used, which have better safety properties but other properties that are inferior to the former. The explosive source has a wide frequency spectrum and is suitable for high-frequency (more than 80 weeks/second), medium-frequency (15-80 weeks/second) and low-frequency (6-15 weeks/second) seismic exploration. The energy of the explosive is not fully used in the effective wave required for seismic exploration, and is mostly consumed to fracture or permanently deform the surrounding medium, and is partly used as seismic disturbance. Particularly when exploded in dry loose rock, the effective energy is lower; good seismic results are obtained only when the explosion occurs in water or in a plastic medium containing water.
Non-explosive sources, representative of which are hammering sources, electromagnetic sources, and spark sources, are gradually replacing explosive sources in recent years.
The hammering vibration source has small environmental pollution, controllable excitation and strong anti-interference performance, and can be used according to different detection targets. If the nondestructive detection of bridges and workpieces needs a special small hammer, the excitation frequency is ensured to be high enough, and the resolution is ensured to be high enough; when the detection target is a dead zone of several meters to tens of meters underground and a loose layer, a large hammer is needed; when the detection depth reaches the level of hundred meters and the detection target is a reservoir and stratum distribution, a large ramming source is needed. Although the hammering vibration source has a wide application range, the hammering vibration source is only suitable for occasions with low resolution requirements, has high energy consumption and is particularly unsuitable for being used as a vibration source in mountain areas.
The electromagnetic seismic source is generally composed of a control box and an impact hammer, is a pulse impact seismic source and can be used for shallow seismic exploration within 100 meters, in particular to a hard pavement. The electromagnetic vibration source has the advantages that the wave frequency is rich, the pavement is not damaged, holes are not needed, compared with the hammering vibration source, the cost is slightly high, the transportation is not as convenient as a large hammer, and the electromagnetic vibration source is suitable for the fields of urban pavement hole detection, pipeline detection, air-raid shelter detection, subway line selection and the like.
The electric spark source is one of electric energy sources, and the stored electric energy is added to an electrode which is placed in water in advance by using a capacitor, high-voltage electricity is released (namely discharge) at a very short moment (microsecond level), an arc of tens of thousands of DEG C is formed, and the water is vaporized to generate an impact pressure wave; but spark sources can only be used in water.
The non-explosive seismic sources described above all have certain limitations and cannot meet the requirements of seismic surveys.
Disclosure of Invention
The invention aims to provide a novel artificial seismic source to meet the seismic survey requirements of different occasions.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows.
The novel artificial seismic source comprises a cylindrical outer pipe, wherein an inner pipe which is arranged into a combustible gas cabin section and an oxygen cabin section from left to right in a partition manner is coaxially arranged in the outer pipe, and the combustible gas cabin section and the oxygen cabin section are communicated or disconnected through a ball valve fixed on the inner wall of the outer pipe; the tail end of the outer tube corresponding to the combustible gas cabin section is provided with an air tap for conveying combustible gas into the combustible gas cabin section; a gap which penetrates through the oxygen pipe to convey oxygen into the oxygen cabin section is arranged between the oxygen cabin section and the inner wall of the outer pipe, and an igniter for igniting after mixing the combustible gas and the oxygen is arranged on the inner pipe wall of the oxygen cabin section corresponding to the gap; the tail end of the oxygen cabin section is provided with a diaphragm which seals the oxygen cabin section before blasting and is opened to form an airflow channel during blasting; and a controller for controlling the actions of the ball valve and the igniter is also arranged in the gap between the combustible gas cabin section and the outer tube.
Above-mentioned novel artifical focus, the combustible gas of combustible gas cabin intussuseption packing is methane, and the inner tube diameter of combustible gas cabin equals with the inner tube diameter of oxygen cabin, and length ratio is 1:2.
according to the novel artificial seismic source, the connecting ring is fixedly arranged on the inner wall of the tail end of the outer tube, and the tail end of the combustible gas cabin section is fixedly connected with the connecting ring through the flange; a sealing cover is arranged between the flange and the connecting ring, the air tap penetrates through the center of the sealing cover, and the air tap is tightly pressed on the outer end face of the sealing cover through a nut.
Above-mentioned novel artifical focus, inlay between sealed lid and the air cock outer wall and be equipped with the O type sealing washer that prevents the combustible gas and leak.
Above-mentioned novel artifical focus, offer the via hole that is used for passing the oxygen pipe on the go-between, the oxygen pipe stretches into the oxygen cabin section inner chamber after passing in proper order clearance between combustible gas cabin section and the outer tube, ball disk seat and oxygen cabin section and the outer tube clearance.
Above-mentioned novel artifical focus, the front end of outer tube is provided with the sealed end cover of center area air current blowout passageway through the bolt fastening, the diaphragm is fixed through the diaphragm cassette of clamping between oxygen cabin section inner tube flange and sealed end cover.
Above-mentioned novel artifical focus, the seal end cover is the toper structure.
Above-mentioned novel artifical focus, the diaphragm cassette is flexible material.
According to the novel artificial seismic source, the igniter is arranged on the wall of the oxygen cabin section through the sealant filled in the through hole.
By adopting the technical scheme, the invention has the following technical progress.
The invention adopts the combustible gas, and can ensure the full combustion of the combustible gas and the oxygen through the volume proportion design of the combustible gas cabin section and the oxygen cabin section, and the combustible gas reacts with the pure oxygen to release a large amount of heat and the gas achieves the detonation effect. According to the invention, the combustible gas and the oxygen are not mixed in the injection process, and after the injected gas is completed, the mixture is started, and ignition is performed after the mixture is mixed for a certain time, so that the safety and reliability of the operation process are ensured; by controlling the pressure of the gas delivered to the oxygen and combustible gas compartments, the frequency of the seismic source can be controlled to meet the seismic survey requirements of different situations.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Wherein: 1. the device comprises a connecting ring, 2, a sealing cover, 3, an oxygen pipe, 4, an oxygen cabin section, 5, an outer pipe, 6, an O-shaped sealing ring, 7, an air tap, 8, a nut, 9, a combustible gas cabin section, 10, a ball valve, 11, an igniter, 12, a sealing end cover, 13, a diaphragm clamping seat, 14, a diaphragm, 15, a controller, 16 and sealing glue.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific embodiments.
The novel artificial seismic source is shown in fig. 1, and comprises a cylindrical outer tube 5, wherein two inner tubes are coaxially arranged in the outer tube, a gap is arranged between the inner tubes and the outer tube, and the two inner tubes are communicated or disconnected through a ball valve 10 fixed on the inner wall of the outer tube; the inner tube corresponding to the tail end of the outer tube is a combustible gas cabin section 9, the inner tube corresponding to the front end of the outer tube is an oxygen cabin section 4, and the diameter of the inner tube of the combustible gas cabin section is equal to that of the inner tube of the oxygen cabin section. In the invention, the combustible gas adopts methane, so that the length ratio of the inner tube of the combustible gas cabin section to the inner tube of the oxygen cabin section is set to be 1:2.
the inner wall of the tail end of the outer tube 5 is fixedly provided with a connecting ring 1, and the tail end of the combustible gas cabin section is fixedly connected with the connecting ring 1 through a flange; a sealing cover 2 is arranged between the flange and the connecting ring 1, an air tap 7 is arranged in the center of the sealing cover 2 in a penetrating way, the air tap is tightly pressed on the outer end face of the sealing cover through a nut 8, and the air tap is communicated with a methane source through an air pipe and then conveys methane gas into the combustible gas cabin. In order to prevent methane gas from leaking, an O-shaped sealing ring 6 is embedded between the sealing cover and the outer wall of the air tap.
The connecting ring 1 is provided with a via hole, an oxygen pipe 3 is arranged in a gap between the oxygen cabin section 4 and the inner wall of the outer pipe, one end of the oxygen pipe 3 passes through the via hole and then is communicated with an oxygen source through the air pipe, and the other end of the oxygen pipe sequentially passes through a gap between the combustible gas cabin section and the outer pipe, a ball valve seat and a gap between the oxygen cabin section and the outer pipe and then stretches into the inner cavity of the oxygen cabin section for conveying oxygen into the oxygen cabin section.
The front end of the outer tube is fixedly provided with a sealing end cover 12 with an air flow spraying channel in the center through a bolt, and a diaphragm 14 is fixed through a diaphragm clamping seat 13 clamped between an inner tube flange of the oxygen cabin section and the sealing end cover 12; wherein the membrane 14 seals the oxygen chamber section prior to bursting and opens the gas flow path upon bursting. In the invention, the sealing end cover is of a conical structure, and the diaphragm clamping seat is made of flexible materials, so that the diaphragm can be ensured to fall off smoothly under the action of air flow at the moment of blasting, and high pressure and high hot air flow are released.
The igniter 11 is arranged on the pipe wall of the oxygen cabin section, and the igniter 11 is arranged on the pipe wall of the oxygen cabin section through sealant 16 filled in the through holes and is used for igniting the mixed methane gas and oxygen. A controller 15 is also provided in the gap between the combustible gas compartment and the outer tube for controlling the action of the ball valve 10 and ignition of the igniter 11.
When the device is used, the oxygen pipe and the oxygen source and the air tap and the methane source are respectively connected through the air pipe, then methane gas is injected into the combustible gas cabin section at the same time according to the same pressure, oxygen is injected into the oxygen cabin section, the pressure is controlled to be 25 atm, the ball valve is controlled to be opened through the controller after the gas injection is finished, the two gases are fully mixed, the igniter is controlled to ignite after the two gases are mixed for 3 hours, the mixed gas is fully combusted, and high-heat and high-strength air flow is generated to break the diaphragm and is released through the air flow channel, so that the effect of an artificial seismic source is achieved.
Of course, the pressure of the gas in the inner pipe can be set according to the frequency requirement of the seismic source, so that the pressure can be effectively controlled, and the requirements of different seismic surveys can be met. Meanwhile, other combustible gases can be adopted as the combustible gas, and the volume ratio of the combustible gas cabin section to the oxygen cabin section is changed at the same time so as to ensure the full combustion of the combustible gas and the oxygen.
Claims (8)
1. A novel artificial seismic source, which is characterized in that: including cylindricality outer tube (5), coaxial being provided with in the outer tube from a left side to right subregion sets up the inner tube for combustible gas cabin section (9) and oxygen cabin section (4), through ball valve (10) intercommunication or shutoff on outer tube inner wall between combustible gas cabin section (9) and the oxygen cabin section (4), the inner tube diameter of combustible gas cabin section equals with the inner tube diameter of oxygen cabin section, and length ratio is 1:2; the tail end of the outer tube corresponding to the combustible gas cabin section (9) is provided with an air tap (7) for conveying combustible gas into the combustible gas cabin section; a gap which penetrates through the oxygen pipe (3) to convey oxygen into the oxygen cabin section is arranged between the oxygen cabin section (4) and the inner wall of the outer pipe, and an igniter (11) for igniting after mixing combustible gas and oxygen is arranged on the inner pipe wall of the oxygen cabin section corresponding to the gap; the end of the oxygen cabin section is provided with a membrane (14) which seals the oxygen cabin section before blasting and is opened to form an airflow channel when blasting; a controller (15) for controlling the actions of the ball valve (10) and the igniter (11) is also arranged in the gap between the combustible gas cabin section and the outer tube; the igniter (11) is arranged on the wall of the oxygen cabin section through sealant (16) filled in the through hole.
2. The novel artificial seismic source of claim 1, wherein: and the combustible gas filled in the combustible gas cabin section is methane.
3. The novel artificial seismic source of claim 1, wherein: a connecting ring (1) is fixedly arranged on the inner wall of the tail end of the outer tube, and the tail end of the combustible gas cabin section is fixedly connected with the connecting ring through a flange; a sealing cover (2) is arranged between the flange and the connecting ring (1), the air tap (7) is arranged in the center of the sealing cover (2) in a penetrating way, and the air tap is tightly pressed on the outer end face of the sealing cover through a nut (8).
4. A novel artificial seismic source according to claim 3, wherein: an O-shaped sealing ring (6) for preventing the combustible gas from leaking is embedded between the sealing cover and the outer wall of the air tap.
5. A novel artificial seismic source according to claim 3, wherein: the connecting ring (1) is provided with a through hole for penetrating through the oxygen pipe (3), and the oxygen pipe (3) sequentially penetrates through a gap between the combustible gas cabin section and the outer pipe, the ball valve seat and the gap between the oxygen cabin section and the outer pipe and then stretches into the inner cavity of the oxygen cabin section.
6. The novel artificial seismic source of claim 1, wherein: the front end of the outer tube is fixedly provided with a sealing end cover (12) with an air flow spraying channel in the center through a bolt, and the diaphragm (14) is fixed through a diaphragm clamping seat (13) clamped between an inner tube flange of the oxygen cabin section and the sealing end cover (12).
7. The novel artificial seismic source of claim 6, wherein: the sealing end cover is of a conical structure.
8. The novel artificial seismic source of claim 6, wherein: the membrane cassette is flexible material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910034673.1A CN109541679B (en) | 2019-01-15 | 2019-01-15 | Novel artificial seismic source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910034673.1A CN109541679B (en) | 2019-01-15 | 2019-01-15 | Novel artificial seismic source |
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| Publication Number | Publication Date |
|---|---|
| CN109541679A CN109541679A (en) | 2019-03-29 |
| CN109541679B true CN109541679B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910034673.1A Active CN109541679B (en) | 2019-01-15 | 2019-01-15 | Novel artificial seismic source |
Country Status (1)
| Country | Link |
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| CN (1) | CN109541679B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646836A (en) * | 2019-10-15 | 2020-01-03 | 四川伟博震源科技有限公司 | Gas explosion transverse wave seismic source excitation device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3314497A (en) * | 1963-10-07 | 1967-04-18 | Sinclair Research Inc | Gas exploder seismic energy source |
| US4193472A (en) * | 1978-07-21 | 1980-03-18 | Exxon Production Research Company | Open-ended seismic source |
| US4667766A (en) * | 1984-10-24 | 1987-05-26 | British Gas Corporation | Seismic pulse generator |
| CN2383840Y (en) * | 1999-07-19 | 2000-06-21 | 中国地质大学（武汉） | Gas phase priming device |
| GB201310908D0 (en) * | 2013-06-19 | 2013-07-31 | Macrocom 1010 Ltd | Pulse detonation seismic energy source |
| CN204515153U (en) * | 2015-01-29 | 2015-07-29 | 湘潭无线电有限责任公司 | The power valve of high-power program control focus |
| CN105353404A (en) * | 2015-12-02 | 2016-02-24 | 西南石油大学 | Gas drilling shaft bottom near-bit continuous impact focus nipple |
| CN106556543A (en) * | 2016-11-10 | 2017-04-05 | 北京理工大学 | For the fuel gas detonation driven generator of High speed load |
| CN107167836A (en) * | 2017-05-25 | 2017-09-15 | 黄河水利委员会黄河水利科学研究院 | A kind of intelligent controlled source of big energy |
| CN209387892U (en) * | 2019-01-15 | 2019-09-13 | 康会峰 | A kind of novel artificial focus |
-
2019
- 2019-01-15 CN CN201910034673.1A patent/CN109541679B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3314497A (en) * | 1963-10-07 | 1967-04-18 | Sinclair Research Inc | Gas exploder seismic energy source |
| US4193472A (en) * | 1978-07-21 | 1980-03-18 | Exxon Production Research Company | Open-ended seismic source |
| US4667766A (en) * | 1984-10-24 | 1987-05-26 | British Gas Corporation | Seismic pulse generator |
| CN2383840Y (en) * | 1999-07-19 | 2000-06-21 | 中国地质大学（武汉） | Gas phase priming device |
| GB201310908D0 (en) * | 2013-06-19 | 2013-07-31 | Macrocom 1010 Ltd | Pulse detonation seismic energy source |
| CN204515153U (en) * | 2015-01-29 | 2015-07-29 | 湘潭无线电有限责任公司 | The power valve of high-power program control focus |
| CN105353404A (en) * | 2015-12-02 | 2016-02-24 | 西南石油大学 | Gas drilling shaft bottom near-bit continuous impact focus nipple |
| CN106556543A (en) * | 2016-11-10 | 2017-04-05 | 北京理工大学 | For the fuel gas detonation driven generator of High speed load |
| CN107167836A (en) * | 2017-05-25 | 2017-09-15 | 黄河水利委员会黄河水利科学研究院 | A kind of intelligent controlled source of big energy |
| CN209387892U (en) * | 2019-01-15 | 2019-09-13 | 康会峰 | A kind of novel artificial focus |
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