CN105160144B - A kind of monitoring method suitable for soft-medium explosion bulge and blast chamber motion - Google Patents
A kind of monitoring method suitable for soft-medium explosion bulge and blast chamber motion Download PDFInfo
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- CN105160144B CN105160144B CN201510341385.2A CN201510341385A CN105160144B CN 105160144 B CN105160144 B CN 105160144B CN 201510341385 A CN201510341385 A CN 201510341385A CN 105160144 B CN105160144 B CN 105160144B
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Abstract
The present invention relates to explosion field, relates generally to a kind of monitoring method suitable for soft-medium explosion bulge and blast chamber motion, including：The first step：Blasting simulation medium moulding；Second step：Treat that quick-fried simulation medium side sets observation window what the above-mentioned first step obtained, and monitoring record equipment is arranged before observation window；3rd step：Medicine is buried in drilling；4th step：Blast monitoring；5th step：Data processing.The monitoring method construction is simple, short time limit, cost saving that are applied to soft-medium explosion bulge and blast chamber motion of the present invention, effectively can be monitored to blast chamber motion.
Description
Technical field
The invention belongs to explosion field, relates generally to a kind of monitoring side suitable for soft-medium explosion bulge and blast chamber motion
Method.
Background technology
In basement process, chamber is expanded in the explosion of underground pile, plays dense extrusion pile foundation surrounding medium, increase stake hole size, subtracts
The purpose of small excacation amount；In slope blasting Shape correction technology during the bench blasting of gentle slope, expand chamber increase using more separate explosions
The explosive payload of blasthole bottom, make the Explosive Energy of explosive treat to be evenly distributed in quick-fried rock mass, disposably carry out stripping and cut top；
The one kind of explosive replacement technology as removing silt for replacement method, has obtained rapid development in recent years.Explosive replacement technology
It is initially known as " Toe shooting method ", is exactly buried in stone riprap outer rim certain distance and the Muddy Soft Foundations of depth and put pack
Group, detonation moment form cavity in mud, and stone riprap caves in immediately fills cavity formation " stone tongue ", reaches the mesh of displacement mud
's.Through repeatedly promoting explosion, you can reach final displacement and require.This method can be used for breakwater, shore protection, coastal ash disposal area to enclose
Dike, reclaim fields from the sea and the Muddy Soft Foundations processing of the coastal cultivation hydraulic engineering such as embankment.Due to the technology and conventional construction work
Skill is compared, it is not necessary to which large-scale construction equipment and complicated construction technology, consumption manpower is few, can shorten duration and can saving throwing
Money, its application is more and more wider, and important work has all been played in the construction such as railway, highway, harbour, airport, nuclear power station
With.To the study mechanism of explosive replacement, unified understanding is there is no at present, it is necessary to further study.
Blast chamber is widely used in pot hole blasting and expands chamber, mud tight-face blasting, weak soil explosion densification and build building
Basis, underground storehouse, defence blindage etc..Because blast chamber application value is big, existing formation of many scholars to blast chamber has been carried out greatly
Quantifier elimination.Blast forms cavity in using explosive as the soil of the energy, and its forming model is more.Because soil is mineral
A kind of three-phase medium of grain, water and air composition, native structure is very complicated, and species is also very more, and respectively has from corresponding blast
Deformation rule.Even for same soil property, under different condition (such as hole reclaimed water and gas content), also in compliance with different
Deformation rule.Therefore, different geological conditions, blast chamber forming process it is widely different.At present, using blast chamber volume profile method
Measured with two methods of water flood, its error is larger, does not observe the dynamic process for expanding chamber, and be unfavorable for blasting experiment data
Collection.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of prison suitable for soft-medium explosion bulge and blast chamber motion
Survey method, effectively solve and be difficult to observe by the dynamic process that chamber is expanded in explosion in the prior art, and measurement error is big, is unfavorable for
The defects of collection of blasting experiment data.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：One kind is applied to soft-medium explosion bulge and transported with blast chamber
Dynamic monitoring method, comprises the following steps：
The first step：Blasting medium moulding, specifically, being tamped using soft-medium accumulation, moulding, obtain treating that quick-fried simulation is situated between
Matter, and the compactness for treating quick-fried simulation medium is tested using standard penetration test (SPT) so that this treats the compactness of quick-fried medium with actually treating
The density of the soft-medium of survey matches (as equal), wherein soft-medium to be measured is the geologic structures such as mud, weak soil；
Second step：What is obtained in the above-mentioned first step treats that quick-fried simulation medium side sets observation window, and the cloth before observation window
Put monitoring record equipment；
3rd step：Medicine is buried in drilling, is specially：
Step s1：Drilled vertically downward on the surface for treating quick-fried simulation medium；
Step s2：From step s1 drilling to treating explosive inside quick-fried simulation medium, synchro measure bury medicine depth W and
Horizontal range d of the explosive away from observation window in above-mentioned second step；
Step s3：Fill above-mentioned drilling and tamp；
4th step：Blast monitoring, it is specially：Explosive in above-mentioned 3rd step of detonating, it is synchronous to pass through observation window in second step
Preceding monitoring record equipment is monitored to blast springing, palliation care, throwing process, and measurement obtains space radius r, bulge half
Footpath R1；
5th step：Data processing, it is specially：The data obtained according to above-mentioned 3rd step and the 4th step, are calculated reality
Space radius R and burden decrement △ W, and obtain compression ratio I.
The beneficial effects of the invention are as follows：This method construction is simple, short time limit, cost saving, moved beneficial to observation blast chamber and quick-fried
The process of broken bulge, measurement result is accurate, is easy to researcher to study blast chamber motion.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, above-mentioned soft-medium is sand.
It is easy for testing moulding and experiment using the beneficial effect of above-mentioned further scheme.
Further, in the calculating of above-mentioned actual space radius, formula is utilizedIt is determined that actual space radius
R。
Beneficial effect using above-mentioned further scheme is to can accurately measure space radius.
Further, in the calculating of above-mentioned burden decrement, formula Δ W=W- (R are utilized1- R) determine resistance wire compression
Measure △ W.
Beneficial effect using above-mentioned further scheme is to can accurately measure repellence decrement.
Further, in the calculating of above-mentioned compression ratio, compression ratio is determined using formula I=Δs W/W.
Beneficial effect using above-mentioned further scheme is to can accurately measure to obtain compression ratio.
Embodiment
The principles and features of the present invention are described below, and the given examples are served only to explain the present invention, is not intended to limit
Determine the scope of the present invention.
Embodiment：The monitoring method for being applied to soft-medium explosion bulge and blast chamber motion of the present invention, comprises the following steps：
The first step：Blasting medium moulding, specifically, being tamped using soft-medium accumulation, moulding, obtain treating that quick-fried simulation is situated between
Matter, and the compactness for treating quick-fried simulation medium is tested using standard penetration test (SPT) so that this treats the compactness of quick-fried medium with actually treating
The density of the soft-medium of survey matches (as equal), wherein soft-medium to be measured is the geologic structures such as mud, weak soil；
Second step：What is obtained in the above-mentioned first step treats that quick-fried simulation medium side sets observation window, and the cloth before observation window
Put monitoring record equipment；
3rd step：Medicine is buried in drilling, is specially：
Step s1：Drilled vertically downward on the surface for treating quick-fried simulation medium；
Step s2：From step s1 drilling to treating explosive inside quick-fried simulation medium, synchro measure bury medicine depth W and
Horizontal range d of the explosive away from observation window in above-mentioned second step；
Step s3：Fill above-mentioned drilling and tamp；
4th step：Blast monitoring, it is specially：Explosive in above-mentioned 3rd step of detonating, it is synchronous to pass through observation window in second step
Preceding monitoring record equipment is monitored to blast springing, palliation care, throwing process, and measurement obtains space radius r, bulge half
Footpath R1；
5th step：Data processing, it is specially：The data obtained according to above-mentioned 3rd step and the 4th step, are calculated reality
Space radius R and burden decrement △ W, and obtain compression ratio I.
Above-mentioned soft-medium is sand.
In the calculating of above-mentioned actual space radius, formula is utilizedIt is determined that actual space radius R.
In the calculating of above-mentioned burden decrement, formula Δ W=W- (R are utilized1- R) determine burden decrement △ W.
In the calculating of above-mentioned compression ratio, compression ratio is determined using formula I=Δs W/W.
The data of the blast chamber motion of the present invention are as follows：
Vertical range d=5cm of the quick-fried source away from glass
1st, quick-fried Depth w=12.5cm, time interval t=0.004s
| Sequence number | Space radius R (cm) | R1-R(cm) | Burden decrement △ W | Compression ratio I |
| 1 | 6 | 12 | 0.5 | 0.04 |
| 2 | 7.5 | 12 | 0.5 | 0.04 |
| 3 | 9 | 11 | 1.5 | 0.12 |
| 4 | 10 | 11 | 1.5 | 0.12 |
| 5 | 10 | 11 | 1.5 | 0.12 |
| 6 | 10.5 | 11 | 1.5 | 0.12 |
| 7 | 11 | 12 | 0.5 | 0.04 |
| 8 | 11.5 | 13 | -0.5 | -0.04 |
| 9 | 11.5 | 14 | -1.5 | -0.12 |
| 10 | 11.5 | 15 | -2.5 | -0.2 |
| 11 | 11.5 | 16 | -3.5 | -0.28 |
2nd, quick-fried Depth w=15cm, time interval t=0.004s
Above-mentioned middle burden decrement is the changing value of burden in testing, it is impossible to it is used as weighing compression degree,
The amount of reflection compression degree should be compression ratio, i.e., the variable quantity of medium in unit length, be transported according to the bulge of compression ratio and monitoring
Dynamic data, the value can be evaluated whether the change in size of blast chamber under the conditions of same media, identical compactness, can also pass through compression ratio
Change curve reflects air work and the process of escape；When the decrement increase being calculated, show Jie in burden direction
Matter is hit, and compression is upward to move, and when decrement is begun to decline, the medium for showing to compress starts dilatation of ftractureing, and gas will be escaped
Ease.
The monitoring method construction is simple, short time limit, the expense that are applied to soft-medium explosion bulge and blast chamber motion of the present invention
Save, effectively blast chamber motion can be monitored.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (3)
- A kind of 1. monitoring method suitable for soft-medium explosion bulge and blast chamber motion, it is characterised in that：Comprise the following steps：The first step：Blasting simulation medium moulding, it is specially：Tamped using soft-medium accumulation, moulding, obtain treating that quick-fried simulation is situated between Matter；Second step：Treat that quick-fried simulation medium side sets observation window what the above-mentioned first step obtained, and monitoring is arranged before observation window Recording equipment；3rd step：Medicine is buried in drilling, is specially：Step s1：Drilled vertically downward on the surface for treating quick-fried simulation medium；Step s2：From step s1 drilling to explosive inside quick-fried simulation medium is treated, synchro measure buries medicine depth W and explosive Horizontal range d away from observation window in above-mentioned second step；Step s3：Fill above-mentioned drilling and tamp；4th step：Blast monitoring, it is specially：Explosive in above-mentioned 3rd step of detonating, before synchronization is by observation window in second step Monitoring record equipment is monitored to blast springing, palliation care, throwing process, and measurement obtains space radius r, bulge radius R1；5th step：Data processing, it is specially：The data obtained according to above-mentioned 3rd step and the 4th step, are calculated actual blast chamber Radius R and burden decrement △ W, and obtain compression ratio I；Wherein, in the calculating of the actual space radius, formula is utilizedIt is determined that actual space radius R；In the calculating of the burden decrement, formula Δ W=W- (R are utilized1- R) determine burden decrement △ W.
- 2. the monitoring method according to claim 1 suitable for soft-medium explosion bulge and blast chamber motion, it is characterised in that： The soft-medium is sand.
- 3. the monitoring method according to claim 1 or 2 suitable for soft-medium explosion bulge and blast chamber motion, its feature exists In：In the calculating of the compression ratio, compression ratio is determined using formula I=Δs W/W.
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| CN201510341385.2A CN105160144B (en) | 2015-06-18 | 2015-06-18 | A kind of monitoring method suitable for soft-medium explosion bulge and blast chamber motion |
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| CN105160144B true CN105160144B (en) | 2017-12-05 |
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| CN106529016B (en) * | 2016-11-07 | 2019-11-05 | 中国工程物理研究院化工材料研究所 | A kind of calculation method of quick-fried thermoelastic explosion cavity radius |
| CN108332627B (en) * | 2018-03-08 | 2019-07-09 | 武汉大学 | The test method of multiple-row blasting section acting duration |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5724311A (en) * | 1994-12-29 | 1998-03-03 | Institut Francais Du Petrole | Method and device for the long-term seismic monitoring of an underground area containing fluids |
| CN102635108A (en) * | 2012-05-02 | 2012-08-15 | 天津大学 | Process for treating valley silt soft foundation in mountain area by explosion method |
| CN104179525A (en) * | 2013-05-23 | 2014-12-03 | 河南永华能源有限公司 | Coal mine blasting blindage and application of coal mine blasting blindage |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050066836A1 (en) * | 2003-09-12 | 2005-03-31 | Yigal Levi | Method for controlling explosions in open mines |
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2015
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5724311A (en) * | 1994-12-29 | 1998-03-03 | Institut Francais Du Petrole | Method and device for the long-term seismic monitoring of an underground area containing fluids |
| CN102635108A (en) * | 2012-05-02 | 2012-08-15 | 天津大学 | Process for treating valley silt soft foundation in mountain area by explosion method |
| CN104179525A (en) * | 2013-05-23 | 2014-12-03 | 河南永华能源有限公司 | Coal mine blasting blindage and application of coal mine blasting blindage |
Non-Patent Citations (2)
| Title |
|---|
| 《Blast response of a lined cavity in a porous saturated soil》;V.R.Feldgun 等;《International Journal of Impact Engineering》;20070714;第35卷;全文 * |
| 《爆炸法处理软土地基的数值模拟》;王志鹏 等;《军事交通学院学报》;20150331;第17卷(第3期);全文 * |
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Granted publication date: 20171205 Termination date: 20180618 |