CN101900518B - Pre-reamed explosive source charge structure and method using structure to generate seismic wave - Google Patents
Pre-reamed explosive source charge structure and method using structure to generate seismic wave Download PDFInfo
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- CN101900518B CN101900518B CN 201010224509 CN201010224509A CN101900518B CN 101900518 B CN101900518 B CN 101900518B CN 201010224509 CN201010224509 CN 201010224509 CN 201010224509 A CN201010224509 A CN 201010224509A CN 101900518 B CN101900518 B CN 101900518B
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Abstract
The invention provides a pre-reamed explosive source charge structure, which comprises a primary detonating charge structure and a secondary detonating charge structure. The primary detonating charge structure comprises a cylindrical shell with an enclosed end; the front half part of the shell is filled with explosive and then is sealed, a detonator hole is reserved and a first detonator is inserted into the detonator hole; the rear half part of the shell is hollow and serves as an explosion-proof layer; the secondary detonating charge structure comprises a cylindrical shell with an enclosed end, the shell is filled with explosive and then is sealed, a detonator hole is reserved at the rear end of the shell, and a second detonator is inserted into the detonator hole; the first detonator is connected in parallel with the second detonator; and the detonation time of the second detonator is over 20ms later than that of the first detonator. The invention also provides a method for manufacturing earthquake waves. After the pre-reamed explosive source charge structure is used, the primary detonating charge structure is detonated first to form an explosion cavity, then the secondary detonating charge structure is detonated in the explosion cavity, and earthquake wave signals generated by secondary detonation are effective signals.
Description
Technical field
The present invention relates to a kind of seismic source apparatus for seismic prospecting, be specifically related to a kind of pre-reamed explosive source charge structure.
Background technology
In the geology physical prospecting, often adopt explosive-source explosive post to come the manufacture of intraocular earthquake, the seismic wave information of obtaining by the surface seismic instrument is drawn geological structure figure then, provides 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, detonates at oral area insertion detonator or primacord during use.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 for causing the energy of seismic wave less, thereby influences signal to noise ratio and the frequency of seismic wave.Because surrounding environment is used quantitative limitation to explosive, can not only improve signal energy by increasing explosive charge again, therefore need badly under the condition that does not change explosive charge, improve the signal to noise ratio of seismic wave and the apparatus and method of frequency.
Summary of the invention
At the problems referred to above of the prior art, a kind of pre-reamed explosive source charge structure of the present invention is under the condition that does not change explosive charge, by exploding in the cavity of pre-expansion, change the medium load characteristic, can reduce the energy loss of focus, the capacity usage ratio of raising focus.
Particularly, the invention provides a kind of pre-reamed explosive source charge structure, it includes once detonation charge constitution and secondary initiation charge constitution; Wherein:
This once detonation charge constitution comprises the cylindrical shell of an end sealing, and this housing first half seals after filling explosive, and leaves the detonator hole, inserts first detonator in this detonator hole; The latter half of hollow of this housing is as the flame proof layer;
This secondary initiation charge constitution comprises the cylindrical shell of an end sealing, and this housing leading section is steel material, seals behind the filling explosive in this housing, and the detonator hole is left in its rear end, inserts second detonator in this detonator hole;
This first detonator and the second detonator parallel connection, the burst period of this second detonator postpones to surpass 20ms than first detonator.
Aforesaid pre-reamed explosive source charge structure, wherein, this first detonator is preferably instant electric detonator, and this second detonator is preferably delay electric detonator.
Aforesaid pre-reamed explosive source charge structure, wherein, the burst time of this first detonator and second detonator is preferably 20ms～50ms at interval.
Aforesaid pre-reamed explosive source charge structure, wherein, the rear end of this once detonation charge constitution is connected with the front end of secondary initiation charge constitution; The housing leading section of this secondary initiation charge constitution is steel material.
Aforesaid pre-reamed explosive source charge structure, wherein, the front end of the rear end of this once detonation charge constitution and secondary initiation charge constitution can be by being threaded.
Aforesaid pre-reamed explosive source charge structure, wherein, the length of this flame proof layer is preferably 300mm～500mm.
Aforesaid pre-reamed explosive source charge structure wherein, can be hollow in this flame proof layer, perhaps fills earth, sand and/or concrete.
Aforesaid pre-reamed explosive source charge structure, wherein, this explosive can be ammonium ladder, ammonium ladder aluminium, TNT and/or nitrolite etc.
Aforesaid pre-reamed explosive source charge structure wherein, can be filled ammonium ladder aluminium 1～2kg in this once detonation charge constitution.
On the other hand, the invention provides the method for a kind of pre-reaming hypocenter of the explosion manufactured place seismic wave, it comprises: use aforesaid pre-reamed explosive source charge structure, this once detonation charge constitution formation blast chamber that at first explodes after the ignition, this secondary initiation charge constitution explodes in this blast chamber subsequently, and the seismic signal that blast for the second time produces is useful signal.
Beneficial effect of the present invention is that pre-reamed explosive source charge structure of the present invention can be realized a reaming, and then carries out subsequent explosion, and the seismic signal that blast for the second time produces is useful signal.Once blast is mainly used to form blast chamber, subsequent explosion is carried out in blast chamber, because the existence in chamber has changed the action effect of subsequent explosion product to surrounding medium, avoided explosion product directly to the effect of medium, reduced the energy consumption of explosion product to the medium transitional function, improve the contribution of explosion energy to the generation seismic wave, thereby can produce high-octane seismic signal.
Description of drawings
Fig. 1 is pre-reamed explosive source charge structure schematic diagram of the present invention;
Fig. 2 is once detonation charge constitution schematic diagram;
Fig. 3 is secondary initiation charge constitution schematic diagram;
Fig. 4 is pre-reamed explosive source charge structure and conventional charge structural test signal to noise ratio comparing result;
Fig. 5 is pre-reamed explosive source charge structure and conventional charge structural test frequency analysis result;
Fig. 6 is pre-reamed explosive source charge structure and conventional charge structural test energy spectrometer result;
The specific embodiment
Specifically describe preferred embodiment of the present invention and beneficial effect thereof below in conjunction with accompanying drawing.
As Fig. 1～shown in Figure 3, the pre-reamed explosive source charge structure of a preferred embodiment of the invention comprises once detonation charge constitution and secondary initiation charge constitution.The front end of the rear end of once detonation charge constitution and secondary initiation charge constitution can be by being threaded.
As depicted in figs. 1 and 2, the once detonation charge constitution comprises the cylindrical shell 11 of an end sealing, and this housing first half is filled explosive 12 back sealings, and leaves the detonator hole, inserts instant electric detonator 13 in this detonator hole; The latter half of hollow of this housing is as flame proof layer 14.Acting as of flame proof layer prevents explosive induced detonation in the secondary initiation charge constitution, determines the length of flame proof layer to be generally 300mm～500mm according to explosive property.Hollow be can be in the flame proof layer, earth, sand and/or concrete perhaps filled.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.
As shown in figures 1 and 3; the secondary initiation charge constitution comprises the cylindrical shell 21 of an end sealing; fill explosive 22 back sealings in this housing; the detonator hole is left in its rear end; insert delay electric detonator 23 in this detonator hole; in order to protect the secondary initiation medicine not to be destroyed when the once detonation, this housing leading section 24 is steel material.
Instant electric detonator and delay electric detonator parallel connection.Detonate simultaneously during use, at first ignite the once detonation charge constitution by instant electric detonator and form blast chamber, the secondary initiation of delay electric detonator ignition subsequently charge constitution explodes in this blast chamber.According to focus place rock layer mechanics performance, the time that reaming forms generally needs tens milliseconds of times to a few tens of milliseconds, so the burst period of delay electric detonator should postpone to be preferably 20ms～50ms above 20ms than instant electric detonator.
Explosive in the pre-reamed explosive source charge structure can be the explosive that uses in the matter exploration operation routinely, for example ammonium ladder, ammonium ladder aluminium, TNT and nitrolite etc.The loading of determining explosive in the once detonation charge constitution according to performance and the dielectric property of explosive is to form the blast chamber of enough volumes.Consumption was 1～2kg when for example explosive was ammonium ladder aluminium.
Embodiment 1
Make pre-reamed explosive source charge 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, fill ammonium ladder aluminium 1kg in the once detonation charge constitution, adopt instantaneous cap to detonate, flame proof layer length is 25cm, fills ammonium ladder aluminium 4kg in the secondary initiation charge constitution, adopts the 25ms delay detonator to detonate.
Charge constitution 2: adopt charge constitution shown in Figure 1, fill ammonium ladder aluminium 2kg in the once detonation charge constitution, adopt instantaneous cap to detonate, flame proof layer length is 25cm, fills ammonium ladder aluminium 4kg in the secondary initiation charge constitution, adopts the 25ms delay detonator to detonate.
Charge constitution 3: adopt charge constitution shown in Figure 3, single-unit powder column, cap sensitive, filling ammonium ladder aluminium 4kg.Buried depth 13.1m.
Charge constitution 4: adopt charge constitution shown in Figure 3, single-unit powder column, cap sensitive, filling ammonium ladder aluminium 4kg.Buried depth 13.2m.
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 the pre-reamed explosive source charge structure effect all to be better than conventional charge.
Claims (8)
1. a pre-reaming hypocenter of the explosion produces the method for seismic wave, it is characterized in that, use pre-reamed explosive source charge structure, this charge constitution includes once detonation charge constitution and secondary initiation charge constitution, ignite the described once detonation charge constitution in the back formation blast chamber that at first explodes, described secondary initiation charge constitution explodes in this blast chamber subsequently, and the seismic signal that blast for the second time produces is useful signal; Wherein
This once detonation charge constitution comprises the cylindrical shell of an end sealing, and this housing first half seals after filling explosive, and leaves the detonator hole, inserts first detonator in this detonator hole; The latter half of hollow of this housing is as the flame proof layer;
This secondary initiation charge constitution comprises the cylindrical shell of an end sealing, seals behind the filling explosive in this housing, and the detonator hole is left in its rear end, inserts second detonator in this detonator hole;
This first detonator and the second detonator parallel connection, the burst period of this second detonator postpones to surpass 20ms than first detonator.
2. method according to claim 1, it is characterized in that: the burst time of described first detonator and second detonator is spaced apart 20ms～50ms.
3. method according to claim 1, it is characterized in that: the rear end of described once detonation charge constitution is connected with the front end of secondary initiation charge constitution; The housing leading section of this secondary initiation charge constitution is steel material.
4. method according to claim 3, it is characterized in that: the front end of the rear end of described once detonation charge constitution and secondary initiation charge constitution is by being threaded.
5. method according to claim 3, it is characterized in that: the length of described flame proof layer is 300mm～500mm.
6. method according to claim 5 is characterized in that: for hollow, perhaps fill earth, sand and/or concrete in the described flame proof layer.
7. according to each described method among the claim 1-6, it is characterized in that: described explosive is ammonium ladder, ammonium ladder aluminium, TNT and/or nitrolite.
8. according to each described method among the claim 1-6, it is characterized in that: fill ammonium ladder aluminium 1～2kg in the described once detonation charge constitution.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010224509 CN101900518B (en) | 2010-07-02 | 2010-07-02 | Pre-reamed explosive source charge structure and method using structure to generate seismic wave |
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| CN 201010224509 CN101900518B (en) | 2010-07-02 | 2010-07-02 | Pre-reamed explosive source charge structure and method using structure to generate seismic wave |
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| CN101900518B true CN101900518B (en) | 2013-09-25 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102278923A (en) * | 2011-08-09 | 2011-12-14 | 南京理工大学 | Condensed-state energetic material volume detonation device and method |
| CN110186341B (en) * | 2019-07-05 | 2023-06-16 | 中国人民解放军陆军工程大学 | Blasting device and method for rapid forming of hard rock V-shaped pits |
| CN112068190A (en) * | 2020-09-17 | 2020-12-11 | 山西省煤炭地质物探测绘院 | Vertical delay superposition seismic source |
Citations (6)
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|---|---|---|---|---|
| CN2314386Y (en) * | 1997-10-17 | 1999-04-14 | 胜利石油管理局地球物理勘探开发公司 | Directional blasting delay superposition seismic sources for geological exploration |
| CN1359011A (en) * | 2001-08-17 | 2002-07-17 | 北京克浪石油技术有限公司 | High-resolution three-dimension three-component earthquake focus prospecting cannonball and making method thereof |
| CN2567590Y (en) * | 2002-09-21 | 2003-08-20 | 四川省雅化实业有限责任公司 | Focus explosive for seismic prospecting |
| CN2645028Y (en) * | 2003-09-19 | 2004-09-29 | 安徽雷鸣科化股份有限公司 | Slurry explosive seismic source charge column |
| CN2670956Y (en) * | 2003-12-04 | 2005-01-12 | 中国石化集团胜利石油管理局地球物理勘探开发公司 | Special explosive column for earthquake source for Lateral wave exploration |
| CN2690899Y (en) * | 2003-12-04 | 2005-04-06 | 中国石化集团胜利石油管理局地球物理勘探开发公司 | Seismic source delay detonating primer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6419044B1 (en) * | 1999-04-20 | 2002-07-16 | Schlumberger Technology Corporation | Energy source for use in seismic acquisitions |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2314386Y (en) * | 1997-10-17 | 1999-04-14 | 胜利石油管理局地球物理勘探开发公司 | Directional blasting delay superposition seismic sources for geological exploration |
| CN1359011A (en) * | 2001-08-17 | 2002-07-17 | 北京克浪石油技术有限公司 | High-resolution three-dimension three-component earthquake focus prospecting cannonball and making method thereof |
| CN2567590Y (en) * | 2002-09-21 | 2003-08-20 | 四川省雅化实业有限责任公司 | Focus explosive for seismic prospecting |
| CN2645028Y (en) * | 2003-09-19 | 2004-09-29 | 安徽雷鸣科化股份有限公司 | Slurry explosive seismic source charge column |
| CN2670956Y (en) * | 2003-12-04 | 2005-01-12 | 中国石化集团胜利石油管理局地球物理勘探开发公司 | Special explosive column for earthquake source for Lateral wave exploration |
| CN2690899Y (en) * | 2003-12-04 | 2005-04-06 | 中国石化集团胜利石油管理局地球物理勘探开发公司 | Seismic source delay detonating primer |
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