CN1420365A - Method for measuring characteristic parameter of rupture and weak band in rock mass - Google Patents
Method for measuring characteristic parameter of rupture and weak band in rock mass Download PDFInfo
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- CN1420365A CN1420365A CN 01134941 CN01134941A CN1420365A CN 1420365 A CN1420365 A CN 1420365A CN 01134941 CN01134941 CN 01134941 CN 01134941 A CN01134941 A CN 01134941A CN 1420365 A CN1420365 A CN 1420365A
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- crack
- characteristic parameter
- intercalated layer
- weak intercalated
- vertical shaft
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Abstract
A method for measuring the characteristic parameters of the rupture and weak band in rock mass includes drilling a deep well at central position of the region to be explorated, arranging a series of explorating explosives and delay detonators at different depthes in the well, arranging the detectors and data parameter recognition systems at different positions on ground surface, delayed detonation of said explosives, receiving and processing the seismic waves, and determining the characteristic parameters. Its advantages are low cost and high efficiency.
Description
Technical field
The present invention relates to the exploration engineering of rock mass structure and environmental geology under a kind of engineering yardstick, particularly a kind ofly be used for surveying rock mass crack and weak intercalated layer characteristic parameter, as: the method for exploration of crack area, interlayer scope, characterisitic parameter etc.
Background technology
Prior art is owing to the transmission, refraction and the reflected signal that all are based on basically by the exploration seismic ripple, emphasis focuses mostly in the following aspects: the 1) method and apparatus of wave source generation, as number of patent application is 86105348 patent, and it discloses the method and apparatus that produces seismic event in wellbore formation.Selecting a certain position of well, can be the shaft bottom.Also can be any other position, as the section that produces seismic event along the well bore height.Provide certain device to come exciting to be in well liquid in the selected well position, thereby in liquid, produced the stable resonant oscillation pressure wave of required frequency.By constantly the liquid energize being compensated because of fluid friction, the radiable loss of structure loss harmony, make waveform keep stable.So the neutral wave that produces is radiated in the stratum by well bore wall and goes, and is finally received by being arranged at ground seismic detectors; Number of patent application is 88106385 patent, and it provides a kind of and has been used for improving by method and a kind of device of implementing the method for the energy that the seismic origin produced that is arranged in wellhole or well at the propagation efficiency of tectonic structure.The one section zone that includes focus in the well is lived by seal member envelope letter, thereby the energy that is produced can prevent to start focus the time is passed to outside the zone of being sealed along the direction of well.This sealing can be used on the mode of living well with respect to the focus closed at both ends and realizes.Two distensible parts can be used to be configured in each end of focus in the well and its, and each has included, such as, an elastic housing, its hydraulic means that moves the annular piston of the expansion that can cause shell and be used for moving this piston; 2) fluctuation signal pick-up unit is 86105318 patent as number of patent application, and it uses for measuring seismic signal.Seismic signal is via transmitting in the stratum and collecting in well.But the direct motor drive one tuning gearing speed-reducer of a reverse rotation in the receiver, borrow speed reduction unit to amplify torque drive one rolling screw that motor produces, rolling screw moves the stretching, extension of controlling a supporting rod along the center line straight line of well, supporting rod is entered or break away from an extended position, can contact with underground near well at this position supporting rod.Receiver is provided with one can disengage supporting rod for the electric clutch coupling that discharges.Therefore, supporting rod is under the extended position situation in that power failure takes place, and receiver is regained; Number of patent application is 92219638 patent, it discloses the underwater seismic wave receiving device that a kind of oil seismic exploration is used, be applicable to that velocity-type detector can't normally settle, the salt pan of piezoelectric seismometer cisco unity malfunction, tidal creek, tide zone and darker waters.The utility model is made up of rubber cap and disc base, and rubber cap is placed on the disc base.Be provided with several mounting hole fitting machine electric transducers in the disc base, constitute seismic event receiving trap under water.The utility model is simple in structure, easy to use, data are accurate, is applicable to that the seismic event in various areas receives; Number of patent application is 94201647 patent, and it is a kind of seismic event high frequency geophone, and the horn body and the compressing tablet that adopt irony circle cup, circular sponge sheet, piezoelectric ceramic piece, high pitch paper film to make constitute.When pile foundation and concrete foundation are detected, can make and detect highest frequency and reach 20000Hz, thereby can intuitively find out phenomenons such as broken pile, segregation, hole enlargement, undergauge, honeycomb, breaking joint, improve more than 10 times than the seismic event wave detector detection resolution of current use.Auspicious Leibo is detected highway pavement improved resolution 3-10 doubly; Number of patent application is 00108261 patent, and the hydrophone that it has an a pair of sensitive element combines the advantage of prior art hydrophone.Electrode capacitance is essentially constant in the broad pressure limit in it, and if the size difference of sensitive element, then be connected the sensitivity of acquisition with the outer cover outer symmetrical be the same order of magnitude to institute's sensitivity that obtains.According to embodiment, hydrophone comprises rigid pipe, and it comprises at least one detecting unit; Be suitable for admitting and supporting the hollow smooth center cell of at least one outer cover, this center cell snaps in the rigid pipe; And on each outer cover and as the protection seal coating of a rigid pipe inner face part; 3) seismic wave analysis method is 97190412 patent as number of patent application, and it discloses a kind of method that is used for determining seismogram analysis migration velocity.These class methods are to adopt and the blow-up point S that interrelates apart from the receiver (R ↓ [1] is to R ↓ [n]) that separates by migration, and it is characterized in that in the given speed scope, from blow-up point and be recorded on the receiver the first group record line with have fixing and all move with the second group record line of the migration distance of first group of conllinear, to obtain two migration images in the part place corresponding with described two group record lines, these two images are relevant by the space two-dimensional correlativity, and its result determines the migration of adopting and is studied deviation between the speed.It is particularly useful in the seismic prospecting in area.
In engineering construction and disaster prevented, the exploration of rock mass structure and environmental geology was indispensable.In exploration, in order fully to understand rock mass and geologic structure, people need carry out a large amount of borehole investigations.Will consume great amount of manpower and material resources and financial resources like this, and therefore remove under very necessary situation, the quantity of borehole investigations is controlled.And prior art can't avoid carrying out a large amount of borehole investigations.
Summary of the invention
The objective of the invention is to overcome the problem that solves the prior art existence, propose a kind of seismic prospecting new solution that rock mass and geologic structure can be fully understood in a large amount of borings that need not; In order to simplify existing method of testing, improve exploration efficiency, utilization is about the result of study of hypocenter of the explosion, thereby the method for exploration in crack and weak intercalated layer characteristic parameter (as: crack area, interlayer scope, characterisitic parameter etc.) in a kind of detection rock mass that need not to hole in a large number is provided.
A kind of measuring method provided by the invention about geology crack and weak intercalated layer characteristic parameter, may further comprise the steps: 1. a vertical shaft is visited in the center in survey area, and the vertical shaft degree of depth is the degree of depth of required exploration;
2. the different depth place in vertical shaft is provided with serial explosive detection and delayed exploding device, and described different depth place can be equidistant or unequal-interval; Described spacing requires decision by measuring accuracy;
3. on the diverse location in the survey area on ground wave detector is set;
4. serial explosive detection and the delayed exploding device that is provided with according to the different depth place of the way of seismic surveying order delayed exploding in vertical shaft, the wave detector on the face of land receives and handles the seismic event that the blast from different depth causes successively, utilize the concussion of blasting signal characteristic to depend on the principle of geologic structure after the contiguous explosion of blast source strongly, the concussion of blasting signal that measuring point by the wave detector arranged within the specific limits picks up determines that by the data processing recognition system crack in the certain limit and weak intercalated layer existence and their characteristic parameter are as the crack area, the interlayer scope, characterisitic parameters etc. are explored.
Also can when passing through to discard the hole, ore deposit, inspecting hole can verify little hole, the ore deposit trend of degree of tilt according to the inventive method at hole, ore deposit location arrangements explosive source.In addition,, utilize single hypocenter of the explosion, also can be used for the interlayer of location aware in the inspecting hole and the detection of crack characteristic according to the inventive method.When also being included in the crack of leaking head or weak intercalated layer, can arrange in leaking a neighborhood that the concussion of blasting source survey its characteristic according to the inventive method.
Show that by great deal of experiment data analysis and numerical simulation the characteristic of the seismic event that is caused by hypocenter of the explosion depends primarily on the self-vibration characteristic of geologic structure after the contiguous explosion of focus and the dielectric property of propagation medium.Under the known situation of propagation medium basic condition, mainly just depended on the self-vibration of the geologic structure that blast load excites.When placing specific positions such as crack, weak stratum, hole, ore deposit contiguous when explosive source, the existence of these positions, ground that explosive source excites and their feature.This be common refraction and reflection seismic method work less than, especially for the very little weak intercalated layer of thickness.
The measuring method of crack provided by the invention and weak intercalated layer characteristic parameter can be provided with serial explosive detection delayed exploding by certain spacing in an inspecting hole, the concussion of blasting signal that picks up by point arranged is within the specific limits determined crack and weak intercalated layer existence and their characteristic parameter in the certain limit, have and need not to carry out a large amount of borehole investigations, only need to beat a bite vertical shaft, great amount of manpower and material resources and financial resources had so both been saved, save a large amount of time again, improved work efficiency widely.Especially measuring method of the present invention is suitable for the exploration for the very little weak intercalated layer of thickness, common refraction and reflection seismic method be detect less than.
Description of drawings
Drawing is described as follows:
Quick-fried system is opened in the explosive and the time-delay that are provided with in 1----inspecting hole (vertical shaft) the 2----inspecting hole
Wave detector and data handling system that the 3---face of land is provided with,
4---weak intercalated layer 5---crack
Embodiment
Embodiment 1
By carrying out shown in Figure 1, getting out an inspecting hole at the center of survey area is vertical shaft 1, in vertical shaft 1,6 explosives and time-delay initiation system 2 are set, the wave detector and the digital data recording system 3 of 6 routines need be set by measurement range and precision on the face of land of survey area by default spacing; According to explosive and the time-delay initiation system 2 in the way of the seismic surveying order delayed exploding vertical shaft 1, the wave detector on the face of land and digital data recording system 3 receive and handle the seismic event that the blast from different depth causes for the time.By the feature of received signal, can survey out the characteristic parameter in crack and weak intercalated layer in the rock mass that has different depth under the face of land, for example: crack area, interlayer scope, orientation and characterisitic parameter etc.
The experimental result that the method for application present embodiment is surveyed is as follows: (longitudinal wave velocity 3000m/s, Poisson ratio 0.24, density 2400kg/m in the semispace homogeneous rock medium
2) the horizontal weak intercalated layer (elastic modulus is than little 1 order of magnitude of rock) of a thick 10m * 10m of 0.5m is arranged, it is apart from semispace surface (ground) 30m place.When near ground surface, hypocenter of the explosion being set, signal that records by wave detector and the measured essentially no difference of signal of no weak intercalated layer.But when hypocenter of the explosion being placed weak intercalated layer contiguous, the measured signal difference of the signal that is recorded by wave detector and no weak intercalated layer is very obvious.When placing hypocenter of the explosion on the weak intercalated layer, the measured signal of the signal peak of sign interlayer feature and no weak intercalated layer differs and surpasses 50%, so just be easy to the existence and the characteristic of weak intercalated layer are identified, this is difficult to accomplish with traditional seismic survey method the time.
Claims (4)
1. the measuring method of crack and weak intercalated layer characteristic parameter in the rock mass is characterized in that: may further comprise the steps:
(1) vertical shaft is visited in the center in survey area;
(2) the different depth place in vertical shaft is provided with serial explosive detection and delayed exploding device;
(3) on the different surface position in the survey area on ground an above wave detector and digital data recording system are set;
(4) serial explosive detection and the delayed exploding device that is provided with according to the different depth place of the way of seismic surveying order delayed exploding in vertical shaft, the seismic event that the wave detector on the face of land and digital data recording system receive for the time and record causes from the blast of different depth, data processing and recognition system utilize the concussion of blasting signal characteristic to depend on the principle of geologic structure after the contiguous explosion of blast source strongly, the concussion of blasting signal that measuring point by the wave detector arranged within the specific limits and digital data recording system picks up is determined crack and weak intercalated layer existence and their characteristic parameter in the certain limit.
2. the measuring method of crack according to claim 1 and weak intercalated layer characteristic parameter is characterized in that: serial explosive detection that described different depth place in vertical shaft is provided with and delayed exploding device can be equidistant or unequal-interval setting.
3. the measuring method of crack according to claim 1 and weak intercalated layer characteristic parameter is characterized in that: when also being included in the crack of leaking head or weak intercalated layer, can arrange in leaking a neighborhood that the concussion of blasting source survey its characteristic.
4. the measuring method of crack according to claim 1 and weak intercalated layer characteristic parameter is characterized in that: described characteristic parameter comprises: crack area, interlayer scope, characterisitic parameter etc. are explored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01134941 CN1185506C (en) | 2001-11-16 | 2001-11-16 | Method for measuring characteristic parameter of rupture and weak band in rock mass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01134941 CN1185506C (en) | 2001-11-16 | 2001-11-16 | Method for measuring characteristic parameter of rupture and weak band in rock mass |
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| Publication Number | Publication Date |
|---|---|
| CN1420365A true CN1420365A (en) | 2003-05-28 |
| CN1185506C CN1185506C (en) | 2005-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01134941 Expired - Fee Related CN1185506C (en) | 2001-11-16 | 2001-11-16 | Method for measuring characteristic parameter of rupture and weak band in rock mass |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220866A (en) * | 2011-04-17 | 2011-10-19 | 山东科技大学 | Pressure relief and consolidation synergizing prevention and control method for rock burst in deep coal drift |
| CN102879805A (en) * | 2012-10-24 | 2013-01-16 | 北京市市政工程研究院 | Borehole-based and ground combined seismic wave space exploration method |
| CN110779475A (en) * | 2019-10-16 | 2020-02-11 | 广西电网有限责任公司电力科学研究院 | Method for measuring size of power transmission tower foundation |
| CN113075027A (en) * | 2021-04-27 | 2021-07-06 | 长沙理工大学 | Test device and method for measuring dynamic elastic modulus of soil body model |
| CN113568038A (en) * | 2021-06-18 | 2021-10-29 | 安庆宜源石油机械配件制造有限责任公司 | Oil surveys device |
-
2001
- 2001-11-16 CN CN 01134941 patent/CN1185506C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220866A (en) * | 2011-04-17 | 2011-10-19 | 山东科技大学 | Pressure relief and consolidation synergizing prevention and control method for rock burst in deep coal drift |
| CN102220866B (en) * | 2011-04-17 | 2013-09-18 | 山东科技大学 | Pressure relief and consolidation synergizing prevention and control method for rock burst in deep coal drift |
| CN102879805A (en) * | 2012-10-24 | 2013-01-16 | 北京市市政工程研究院 | Borehole-based and ground combined seismic wave space exploration method |
| CN102879805B (en) * | 2012-10-24 | 2015-06-24 | 北京市市政工程研究院 | Borehole-based and ground combined seismic wave space exploration method |
| CN110779475A (en) * | 2019-10-16 | 2020-02-11 | 广西电网有限责任公司电力科学研究院 | Method for measuring size of power transmission tower foundation |
| CN110779475B (en) * | 2019-10-16 | 2021-05-14 | 广西电网有限责任公司电力科学研究院 | Method for measuring size of power transmission tower foundation |
| CN113075027A (en) * | 2021-04-27 | 2021-07-06 | 长沙理工大学 | Test device and method for measuring dynamic elastic modulus of soil body model |
| CN113568038A (en) * | 2021-06-18 | 2021-10-29 | 安庆宜源石油机械配件制造有限责任公司 | Oil surveys device |
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| Publication number | Publication date |
|---|---|
| CN1185506C (en) | 2005-01-19 |
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