CN101871755A - Multipoint excitation-volume seismic focus charging structure - Google Patents
Multipoint excitation-volume seismic focus charging structure Download PDFInfo
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- CN101871755A CN101871755A CN 201010204331 CN201010204331A CN101871755A CN 101871755 A CN101871755 A CN 101871755A CN 201010204331 CN201010204331 CN 201010204331 CN 201010204331 A CN201010204331 A CN 201010204331A CN 101871755 A CN101871755 A CN 101871755A
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Abstract
The invention provides a seismic focus device for seismic exploration, in particular a multipoint excitation-volume seismic focus charging structure comprising more than three single-link explosive columns, connecting members and detonating fuses, wherein the single-link explosive columns are connected end to end in series through the connecting members and the detonating fuses; each single-link explosive column comprises a columnar shell in which explosives are filled, both ends of the shell are respectively provided with a detonating fuse hole in which the detonating fuse is inserted, and both ends of each detonating fuse are respectively connected with two neighboring single-link explosive columns; the explosion velocity of the detonating fuses is not less than 6800m/s; and the neighboring two single-link explosive columns are connected through the connecting members which are in a cylindrical structure, and both ends of the connecting members are respectively connected with two neighboring single-link explosive columns. The seismic focus charging structure expands the volume of a seismic focus and can reduce the energy loss of the seismic focus under the condition of not changing explosive charge and explosive density, thereby generating seismic waves with high signal to noise ratio and high frequency.
Description
Technical field
The present invention relates to a kind of seismic source apparatus that is used for seismic prospecting, be specifically related to a kind of multiple spot superquick action seismic source apparatus.
Background technology
In the geology physical prospecting, often adopt explosive-source explosive post to come the manufacture of intraocular earthquake, then by seismographic feedback information, draw geological structure figure, provide scientific basis for looking for resource industries such as ore deposit, water detection, oil prospecting.
Explosive-source explosive post of the prior art generally is to add explosive in the explosive-source explosive post housing, again with the oral area sealing, inserts detonator at oral area during use and detonates.The defective that this product exists is that explosive loading is concentrated, and the energy that blast produces partly is used for the excessive destruction of medium, is used to cause the energy of seismic wave less, thereby influences the signal to noise ratio and the frequency of seismic wave.
Summary of the invention
Researcher of the present invention finds that under the condition that does not change explosive charge and explosive density, by enlarging focal volume, the energy loss that can reduce focus produces high-quality seismic wave.
Thus, the invention provides a kind of multipoint excitation-volume seismic focus charging structure, it includes three above single-unit powder columns, connector and primacords, connects from beginning to end by connector and primacord between each single-unit powder column;
Wherein, this single-unit powder column comprises cylindrical shell, and enclosure interior is filled explosive, and housing head and the tail two ends have the primacord hole respectively;
Grafting primacord in this primacord hole, primacord two ends connect two adjacent single-unit powder columns respectively; The explosion velocity of primacord should be not less than 6800m/s;
Be connected by connector between adjacent two single-unit powder columns, this connector is a cylinder-like structure, and its head and the tail two ends connect two adjacent single-unit powder columns respectively.
Aforesaid multipoint excitation-volume seismic focus charging structure, wherein, can have radially in the middle part of this connector dividing plate has through hole and passes through for described primacord as stiffener in the middle of this stiffener.
Aforesaid multipoint excitation-volume seismic focus charging structure wherein, can link to each other by screw thread between this single-unit powder column and the connector.
Aforesaid multipoint excitation-volume seismic focus charging structure, wherein, the material of this connector can be identical with the material that housing uses.
Aforesaid multipoint excitation-volume seismic focus charging structure wherein, can be hollow in this connector, perhaps fills earth, sand and/or concrete.
Aforesaid multipoint excitation-volume seismic focus charging structure, wherein, the length of every section primacord is preferably 500mm～1600mm.
Aforesaid multipoint excitation-volume seismic focus charging structure, wherein, the length of this connector can be 500mm～1500mm.
Aforesaid multipoint excitation-volume seismic focus charging structure, wherein, this single-unit grain length can be 250mm～500mm; Diameter is 40mm～80mm.
Aforesaid multipoint excitation-volume seismic focus charging structure, wherein, this explosive is for can be ammonium ladder, ammonium ladder aluminium, TNT and/or nitrolite etc.
Beneficial effect of the present invention is that multipoint excitation-volume seismic focus charging structure of the present invention adopts the section gap filling, and each section adopts the primacord superquick action, under the single hole condition, realize enlarging quick-fried volume source, change energy density, improve signal to noise ratio, frequency and the amplitude of seismic wave.
Description of drawings
Fig. 1 is a multipoint excitation-volume seismic focus charging structure schematic diagram of the present invention;
Fig. 2 is a single-unit powder column structural representation;
Fig. 3 is the connector structural representation;
Fig. 4 is multi-point shooting and conventional charge test signal to noise ratio comparing result;
Fig. 5 is multi-point shooting and conventional charge test frequency analysis result;
Fig. 6 is multi-point shooting and conventional charge test energy spectrometer result;
The specific embodiment
Specifically describe preferred implementation of the present invention and beneficial effect thereof below in conjunction with accompanying drawing.
As shown in Figure 1, the multipoint excitation-volume seismic focus charging structure of a preferred embodiment of the invention includes three above single-unit powder columns 1, connector 2 and primacords 3, connects by connector 2 and primacord 3 head and the tail between each single-unit powder column 1.
As illustrated in fig. 1 and 2, each single-unit powder column 1 comprises cylindrical shell 11, and enclosure interior is filled explosive 12, and housing head and the tail two ends have primacord hole 131 and 132 respectively.Grafting primacord 3 in the primacord hole, primacord 3 two ends insert respectively in the head and the tail primacord hole 131 and 132 of two adjacent single-unit powder columns.In the tail end primacord hole 133 of the last single-unit powder column of whole charge constitution, insert detonator.Single-unit grain length and diameter can be determined according to the explosive charge and the explosive kind of concrete use.Can use routine to be used for the quick-fried source explosive of geological prospecting, for example ammonium ladder, TNT and nitrolite etc. also can adopt the explosive that contains the high-energy metals powder.Adopt primacord to ignite between every joint powder column, choose the primacord that explosion velocity should be not less than 6800m/s, thereby guarantee respectively to save reliability and the instantaneous ignition that powder column detonates.
As shown in figures 1 and 3, be connected by connector 2 between the adjacent two single-unit powder columns 1, connector 2 is a cylinder-like structure, and its head and the tail two ends connect two adjacent single-unit powder columns 1 respectively.The material of connector 2 can be identical with the material that housing uses, and can have radially in the middle part of it dividing plate has through hole 22 and passes for primacord 3 as stiffener 21 in the middle of the stiffener 21.The housing two ends of single-unit powder column can be provided with external screw thread, and the connector two ends can be provided with internal thread, link to each other by screw thread between single-unit powder column and the connector.Connector 2 plays protection primacord 3 and enlarges the effect of quick-fried volume source.The length of connector 2 is preferably 500mm～1500mm less than the length of primacord 3 according to its length of concrete needs.The bulk effect that length can not be realized ideal during less than 500mm, length are greater than 1500mm, and all the single-unit powder columns then do not reach the synergy effect.The length of connector 2 is preferably about 1m.Can be hollow in the connector 2 or fill earth, sand and/or concrete.Focus place medium is that as soil, sand etc., connector inside can be hollow under the more weak situation of intensity; When medium is the higher rock of intensity, but connector inside filling concrete etc. prevent that explosion product from along scurrying in the boring, causing the excessive power loss.
Embodiment 1
Make multipoint excitation-volume seismic focus charging structure according to above-mentioned embodiment, and contrast identical its signal to noise ratio of dose conventional charge structural research, frequency and energy response.
Charge constitution 1: adopt charge constitution shown in Figure 1, four joint powder column series connection, the long 400mm of single-unit powder column, diameter 60mm, filling ammonium ladder aluminium, single-unit powder column quality is 1kg, connector length 500mm, primacord length 550mm does not have charges in the connector, buried depth 13.2m.
Charge constitution 2: adopt charge constitution shown in Figure 1, four joint powder column series connection, the long 400mm of single-unit powder column, diameter 60mm, filling ammonium ladder aluminium, single-unit powder column quality is 1kg, connector length 1000mm, primacord length 1200mm does not have charges in the connector, buried depth 13.2m.
Charge constitution 3: adopt charge constitution shown in Figure 2, four joint powder columns are directly connected, and filling ammonium ladder aluminium is the 4kg cap sensitive altogether, buried depth 13.2m.
Charge constitution 4: adopt charge constitution shown in Figure 2, four joint powder columns are directly connected, and filling ammonium ladder aluminium is the 4kg cap sensitive altogether, buried depth 13.5m.
Carry out the source effect test at Shengli Oil Field, put into above-mentioned charge constitution 1-4 respectively, utilized surface geophone to receive seismic wave after the ignition, the line data of going forward side by side is handled, signal to noise ratio result as shown in Figure 4, frequency analysis result such as Fig. 5, the energy spectrometer result as shown in Figure 6.Above-mentioned test result shows, adopts multipoint priming charge constitution effect all to be better than conventional charge.From frequency and energy, effect is better during the 1m of connector interval.
Claims (9)
1. multipoint excitation-volume seismic focus charging structure, it is characterized in that: it includes three above single-unit powder columns, connector and primacords, connects from beginning to end by connector and primacord between each single-unit powder column;
Wherein, this single-unit powder column comprises cylindrical shell, and enclosure interior is filled explosive, and housing head and the tail two ends have the primacord hole respectively;
Grafting primacord in this primacord hole, primacord two ends connect two adjacent single-unit powder columns respectively; The explosion velocity of primacord is not less than 6800m/s;
Be connected by connector between adjacent two single-unit powder columns, this connector is a cylinder-like structure, and its head and the tail two ends connect two adjacent single-unit powder columns respectively.
2. multipoint excitation-volume seismic focus charging structure according to claim 1 is characterized in that: have radially in the middle part of the described connector dividing plate has through hole and passes through for described primacord as stiffener in the middle of this stiffener.
3. multipoint excitation-volume seismic focus charging structure according to claim 1 is characterized in that: link to each other by screw thread between described single-unit powder column and the connector.
4. multipoint excitation-volume seismic focus charging structure according to claim 1 is characterized in that: the material of described connector is identical with the material that described housing uses.
5. multipoint excitation-volume seismic focus charging structure according to claim 1 is characterized in that: for hollow, perhaps fill earth, sand and/or concrete in the described connector.
6. according to each described multipoint excitation-volume seismic focus charging structure in the claim 1～5, it is characterized in that: the length of described every section primacord is 500mm～1600mm.
7. according to each described multipoint excitation-volume seismic focus charging structure in the claim 1～5, it is characterized in that: the length of described connector is 500mm～1500mm.
8. multipoint excitation-volume seismic focus charging structure according to claim 7 is characterized in that: described single-unit grain length is 250mm～500mm; Diameter is 40mm～80mm.
9. according to each described multipoint excitation-volume seismic focus charging structure in the claim 1～5, it is characterized in that: described explosive is ammonium ladder, ammonium ladder aluminium, TNT and/or nitrolite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010204331 CN101871755A (en) | 2010-06-21 | 2010-06-21 | Multipoint excitation-volume seismic focus charging structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010204331 CN101871755A (en) | 2010-06-21 | 2010-06-21 | Multipoint excitation-volume seismic focus charging structure |
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| CN101871755A true CN101871755A (en) | 2010-10-27 |
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| CN 201010204331 Pending CN101871755A (en) | 2010-06-21 | 2010-06-21 | Multipoint excitation-volume seismic focus charging structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107631670A (en) * | 2017-10-13 | 2018-01-26 | 山东大学 | A kind of means for loading and its application method suitable for Underground Engineering Blasting |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1170868A (en) * | 1997-06-20 | 1998-01-21 | 煤炭科学研究总院抚顺分院 | Axial booster tube method for deep hole explosive train blast and booster tube and booster charge stick |
| WO1998017964A1 (en) * | 1996-10-18 | 1998-04-30 | Orica Australia Pty Ltd | Method of controlled blasting |
| JP2002039700A (en) * | 2000-07-24 | 2002-02-06 | Nof Corp | Charging tool and charging method for explosive compound into gunpowder charging hole |
| CN1886635A (en) * | 2003-11-28 | 2006-12-27 | 澳瑞凯炸药技术有限公司 | Method of blasting multiple layers or levels of rock |
| CN101046366A (en) * | 2007-01-24 | 2007-10-03 | 荆山 | Water pressure burst hole and burst method with energy saving and environment friendship |
-
2010
- 2010-06-21 CN CN 201010204331 patent/CN101871755A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998017964A1 (en) * | 1996-10-18 | 1998-04-30 | Orica Australia Pty Ltd | Method of controlled blasting |
| CN1170868A (en) * | 1997-06-20 | 1998-01-21 | 煤炭科学研究总院抚顺分院 | Axial booster tube method for deep hole explosive train blast and booster tube and booster charge stick |
| JP2002039700A (en) * | 2000-07-24 | 2002-02-06 | Nof Corp | Charging tool and charging method for explosive compound into gunpowder charging hole |
| CN1886635A (en) * | 2003-11-28 | 2006-12-27 | 澳瑞凯炸药技术有限公司 | Method of blasting multiple layers or levels of rock |
| CN101046366A (en) * | 2007-01-24 | 2007-10-03 | 荆山 | Water pressure burst hole and burst method with energy saving and environment friendship |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107631670A (en) * | 2017-10-13 | 2018-01-26 | 山东大学 | A kind of means for loading and its application method suitable for Underground Engineering Blasting |
| CN107631670B (en) * | 2017-10-13 | 2023-09-01 | 山东大学 | Charging device suitable for underground engineering blasting and application method thereof |
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Application publication date: 20101027 |