CN203688809U - Wavelet analysis device for elastic wave exploration - Google Patents
Wavelet analysis device for elastic wave exploration Download PDFInfo
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- CN203688809U CN203688809U CN201320627362.4U CN201320627362U CN203688809U CN 203688809 U CN203688809 U CN 203688809U CN 201320627362 U CN201320627362 U CN 201320627362U CN 203688809 U CN203688809 U CN 203688809U
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Abstract
A wavelet analytical device for elastic wave exploration includes a metal hammer, a metal vibratory block and a receiving host. A detector is buried in the metal vibratory block. The receiving host includes a power supply, a resistor, a computer and a receiving system. The metal hammer, the power supply, the resistor and the metal vibratory block are sequentially connected in series by leads. The two ends of the resistor are connected with the computer by leads. The receiving system is also connected with the computer. The detector is communicatively connected with the receiving system. The wavelet analysis device adopts a new vibrating mechanism which can generate a vibration with a frequency of up to more than 10kHz and a frequency bandwidth of 5Hz to 10kHz. A vibrated metal object clings to the ground and a rock face, so that the vibration of the vibrated metal object can be transmitted to a soil mass or a rock mass through a soil face or the rock face contacting with the vibrated metal object, the vibrations with high wide frequency band can obtain abundant reflected signals, thereby obtaining new exploration effects. The wavelet analytical device can be used for exploration under a soft ground condition.
Description
Technical field
The utility model relates to GEOPHYSICS FOR SHALLOW LAYER and reconnoitres (engineering geologic investigation) technical field, especially relates to a kind of wavelet analysis device of elastic wave exploration.
Background technology
The method of impulsing of at present seismic prospecting is mainly blast, hammering focus etc., and they utilize the effect producing between an object and rock, soil to produce vibration, for example, while using hypocenter of the explosion, acts on generation vibrate when explosive charge with rock around of explosive or soil; Hammering focus is to impact ground or scar with weight to produce seismic wave, or impacts on a slab with weight, and slab and ground, native face interact, and produce and vibrate; It is that a slab is put in to ground that shear wave buckle method impulses, upper ballast, and the horizontal plank one end of striking, makes plate and ground produce friction and vibrates.They produce vibration between the explosive charge impulsing or impulse equipment and rock, soil contact face.They make the method for rock mass generation vibration, seismic wave in native face or scar or boring by impacting or exploding, and the frequency generally exciting is all lower.The utility model proposes a kind of new mode that impulses, overcome the limitation of the above-mentioned method that impulses.
Utility model content
The purpose of this utility model has been to propose a kind of mode that impulses of novel elastic wave exploration and has designed wavelet analysis device, addresses the above problem.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of wavelet analysis device of elastic wave exploration, comprise metal hammer, metal shake piece and Receiving Host, described metal shakes in piece and is embedded with wave detector, described Receiving Host comprises power supply, resistance, computing machine and receiving system, and described metal hammer, described power supply, described resistance, described metal shake and connect successively by wire between piece;
The two ends of described resistance are wired to described computing machine, and described receiving system is also connected to described computing machine, and between described wave detector and described receiving system, communication is connected.
The quality of described metal hammer is 2kg～6kg.
The described metal piece that shakes is metal square plate or the rectangle of thick 1～2cm, the length of side 15～25cm; Or be diameter 15～25cm circular metal dish; Or be the Metallic rod of diameter 2cm～4cm, long 20～40cm; Or be the derby of 5～10cm × 5～10cm × 5～10cm.
Described power supply is battery.
Described wave detector is that frequency range is the wideband wave detector of 10Hz-8000Hz.
The method that impulses of the wavelet analysis device of the elastic wave exploration described in basis, comprises that step is as follows:
The first step, described metal is shaken, and tested rock is put on the ground or be attached to piece, soil is surperficial;
Second step, impact the described metal piece that shakes with described metal hammer, the moment impacting makes the short circuit between piece of shaking of described metal hammer and described metal, and makes the circuit momentary connection between piece of shaking of described metal hammer, described power supply, described resistance, described metal, produces potential difference (PD) Δ V in the both sides of described resistance; Meanwhile, make described metal shake piece produce vibration become focus, these vibrations are imported ground into by tested rock, native surface;
The 3rd step, described computing machine receives described potential difference (PD) Δ V by wire, starts the clock of described Receiving Host, provides the zero-time; And start receiving system; .
The 4th step, the seismic wave signal detecting is transmitted to the described receiving system on described Receiving Host by described wave detector, receives seismic wave signal timely impulse frequency spectrum and the wavelet that impulses analyzed that described receiving system transmits.
The utility model discloses a kind of new mode that impulses of shallow seismic exploration, it is placed on native face or rock face impulsed surperficial steel, aluminium alloy or the copper of body and the object of other hard metal in advance by impacting with metal hammer, after they are subject to hammering, generation vibration becomes focus, and imports in the soil body or rock mass with this surface of contact of surface of the body that impulsed by the body that impulses; The metal object of being beaten is the square of thick 1cm～2cm, length of side 15cm～25cm or rectangle sheet metal, or be the circular metal dish of thick 1cm～2cm, diameter 15cm～25cm, or be the Metallic rod of diameter 2cm-4cm, long 20cm-140cm, or be the derby of 5cm～10cm × 5cm～10cm × 5cm～10cm; In these sheet metals, Metallic rod, rosette, derby, the wave detector of ultrabroad band is housed, wave detector is connected with Receiving Host with lead-in wire, in order to frequency spectrum and the wavelet analysis of impulsing in time; Metal blocks is connected with wire respectively with hammer, and wire is connected to Receiving Host, and Receiving Host is provided with resistance and is connected with wire with battery, short circuit when hammer contacts with metal blocks, produces potential difference (PD) at resistance two ends, start the computer clock of main frame, provide the zero-time, and start receiving system.
Traditional method of seismic prospecting is that employing hypocenter of the explosion or hammering focus, weight drop all only can obtain the frequency compared with low and narrow frequency.The 74th page of " PRINCIPLE OF SEISMIC PROSPECTING WITH " (first volume) of for example the 1st edition the 7th printing August in 2006, " dominant frequency of reflection wave is generally wider in the Frequency spectrum ratio of 30～50Hz... the rustle of leaves in the wind microseism of Denging for 2nd～4 row; The frequency spectrum of sound wave, more than 100Hz, is higher scope "; " 4.1.1.3 advantage and the limitation " of " Shallow Refraction Method On Searching " one joint of " engineering geophysics handbook " (Chinese Water Conservancy electric power physical prospecting scientific and technical information network is write) of publishing in March, 2011 2) in " and investigation depth scope is wide, from several meters to tens meters so that one or two hundred meters all can." (the 248th page).The 257th page fall 6 row, " while carrying out refraction wave, its frequency spectrum is about 30-60Hz...... " the 291st page, 14th～17 row " ground shallow layer earthquake reflection method; when investigation depth is less than four or five ten meters, reflection wave frequency spectrum is many at 100～150Hz ... in the time that investigation depth is greater than four or five ten meters, reflection wave frequency spectrum is many at 60～120Hz ".
Scheme of the present utility model is: impact small size steel, aluminium alloy system or the copper and other the hard metal objects that are placed in advance on native face or rock face with metal hammer, they are subject to produce vibrations after hammering, and this vibration frequency is high, more than reaching as high as 10kHz; And bandwidth, can be from 5Hz～10kHz.The metallic object being impulsed and ground, scar are close to, and the vibration of the metal object being impulsed can be imported in the soil body or rock mass by the native face, the scar that contact with it.
This difference that impulses mode and the traditional mode that impulses is, impact the metal body that impulses with hammering, make this metallic object produce vibration, then the object having been impulsed by this imports vibration in medium into, the soil body, rock mass are to receive these vibrations and transmit stress wave.The soil body, rock mass are to receive this vibrations and transmit stress wave, and they impulse, and frequency band is wider and the radio-frequency component that impulses is abundant.
In order to grasp the wavelet that impulses and the situation of frequency spectrum, a wide band wave detector is installed in the metal object being impulsed; The connecting line other end of wave detector connects to instrument Receiving Host, and frequency spectrum and wavelet analysis in time impulse.
The beneficial effects of the utility model can be summarized as follows:
1, the utility model impacts small size steel, aluminium alloy system or the copper and other the hard metal objects that are placed in advance on native face or rock face with metal hammer, after they are subject to hammering, generation vibrations become focus, this is a kind of new mechanism that impulses, this vibration frequency is high, more than reaching as high as 10kHz; And bandwidth, can be from 5Hz～10kHz.The metallic object being impulsed and ground, scar are close to, and the vibration of the metal object being impulsed can be imported in the soil body or rock mass by the native face, the scar that contact with it, and high wide band vibrations can obtain abundant reflected signal, obtain the new effect of reconnoitring; The new mode that impulses.Can under soft terrain environment, use.
2, the utility model is simple in structure, without the processing of complex parts, easy to use, cheap for manufacturing cost.
Brief description of the drawings
Fig. 1 is the square or rectangle sheet metal 1 of thick 1～2cm, the length of side 15～25cm,
Fig. 2 is the circular metal dish 2 of diameter 15～25cm diameter,
Fig. 3 is the Metallic rod 3 of diameter 2cm～4cm, long 20～40cm,
Fig. 4 is the derby 4 of 5～10cm × 5～10cm × 5～10cm,
Fig. 5 is each element connection diagram,
Fig. 6 is the spectrum analysis curve map in time section Shang 44 roads (point) of the survey line 1 that does on caragana microphylla tower coal mine ground,
Fig. 7 is spectrum analysis data when hereinafter example 2 is placed on wave detector the little metallic object impulsing and impulses.
Square or the rectangle sheet metal of 1-in figure, also can replace with 2,3,4
The exciting hammer that 5-hammering sheet metal 1 impulses
6,7-is connected to exciting hammer 5 and sheet metal 1 respectively the wire of instrument host
8-instrument host
9-battery
10-resistance
Computing machine in 11-instrument host
12, the two ends of resistance 10 are connected the wire to computing machine by 13-
The wide band wave detector of 14-(frequency acceptance band is wide is 10Hz-8000Hz)
The wiring that 15-connects to receiver from Broadband detector 14
Embodiment
Clearer for technical matters, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The wavelet analysis device of a kind of elastic wave exploration as shown in Figures 1 to 5, comprise metal hammer, metal shake piece and Receiving Host, described metal shakes in piece and is embedded with wave detector, described Receiving Host comprises power supply, resistance, computing machine and receiving system, and described metal hammer, described power supply, described resistance, described metal shake and connect successively by wire between piece; The two ends of described resistance are wired to described computing machine, and described receiving system is also connected to described computing machine, and between described wave detector and described receiving system, communication is connected.
In the embodiment being more preferably, the quality of described metal hammer is 2kg～6kg.The described metal piece that shakes is metal square plate or the rectangle of thick 1～2cm, the length of side 15～25cm; Or be diameter 15～25cm circular metal dish; Or be the Metallic rod of diameter 2cm～4cm, long 20～40cm; Or be the derby of 5～10cm × 5～10cm × 5～10cm.
In the embodiment being more preferably, described power supply is battery.Described wave detector is that frequency range is the wideband wave detector of 10Hz-8000Hz.
The method that impulses of the wavelet analysis device of the elastic wave exploration described in basis, comprises that step is as follows:
The first step, described metal is shaken, and tested rock is put on the ground or be attached to piece, soil is surperficial;
Second step, impact the described metal piece that shakes with described metal hammer, the moment impacting makes the short circuit between piece of shaking of described metal hammer and described metal, and makes the circuit momentary connection between piece of shaking of described metal hammer, described power supply, described resistance, described metal, produces potential difference (PD) Δ V in the both sides of described resistance; Meanwhile, make described metal shake piece produce vibration become focus, these vibrations are imported ground into by tested rock, native surface;
The 3rd step, described computing machine receives described potential difference (PD) Δ V by wire, starts the clock of described Receiving Host, provides the zero-time; And start receiving system; .
The 4th step, the seismic wave signal detecting is transmitted to the described receiving system on described Receiving Host by described wave detector, receives seismic wave signal timely impulse frequency spectrum and the wavelet that impulses analyzed that described receiving system transmits.
In two specific embodiments:
(1) by little metal blocks, be the square plate of thick 1～2cm, the length of side 15～25cm or the circular metal dish 2 (Fig. 2) of rectangle 1 (Fig. 1) or diameter 15～25cm diameter, or the Metallic rod 3 (Fig. 3) of diameter 2cm～4cm, long 20～40cm; Or the derby 4 (Fig. 4) of 5～10cm × 5～10cm × 5～10cm, put on the ground or be attached to other ground surfaces;
(2) impact metal blocks 1 or 2 or 3 or 4 with the metal hammer 5 of 2kg～6kg and make it to produce vibration;
(3) metal blocks is connected with wire 6,7 respectively with hammer, and wire is connected to Receiving Host 8, and Receiving Host is provided with resistance 8 and is connected with wire with battery 9.Short circuit when hammer contacts with metal blocks, wire and resistance are communicated with power supply, and resistance two ends produce potential difference (PD) Δ V, and this potential difference (PD) receives by the computing machine 11 of wire 12,13 and main frame 8, starts this machine clock, provides the zero-time, and starts receiving system.
(4) the wide band wave detector 14 that frequency band is 10HZ-8000Hz is arranged in sheet metal 1, metal dish 2, Metallic rod 3, derby 4, connects to Receiving Host by connecting line 15.Analyze in time by main frame impulse frequency spectrum and the wavelet that impulses.
As an example, quote a field measurement data.That is the actual measurement of doing on Yulin City caragana microphylla tower coal mine ground.Impacting Metallic rod with hammering respectively at each measuring point of survey line 1 impulses, the fraction of ground survey line is highway, most of sand bed for sand dune formation, thickness is 10～14m, the time section converging into according to the each measuring point data of survey line, approximately 78ms～the 84ms that can see 23 point～36 in sectional view, has hyp lineups, and he has reflected the Dong great lane, 2-2 coal seam of known location and the degree of depth (about 130m is dark); At many hyp lineups of 97ms～101ms, he has reflected the goaf of dark about 160m.This data has reflected that probing depth can reach about 180m.Dui does spectrum analysis in 44 roads, and he has reflected that reflection wave frequency can reach 3700Hz, sees Fig. 6.
As second example, quote spectrum analysis data when wave detector is placed on to the little metallic object impulsing, see accompanying drawing 7 (figure below).He has reflected by the mode that impulses and the device of the utility model patent defined, and its frequency that impulses can be from several Hz to 5000Hz, more than even reaching 10000Hz.
More than by the detailed description of concrete and preferred embodiment the utility model; but those skilled in the art should be understood that; the utility model is not limited to the above embodiment; all within spirit of the present utility model and principle; any amendment of doing, be equal to replacement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. the wavelet analysis device of an elastic wave exploration, it is characterized in that: comprise metal hammer, metal shake piece and Receiving Host, described metal shakes in piece and is embedded with wave detector, described Receiving Host comprises power supply, resistance, computing machine and receiving system, and described metal hammer, described power supply, described resistance, described metal shake and connect successively by wire between piece;
The two ends of described resistance are wired to described computing machine, and described receiving system is also connected to described computing machine, and between described wave detector and described receiving system, communication is connected.
2. the wavelet analysis device of elastic wave exploration according to claim 1, is characterized in that: the quality of described metal hammer is 2kg～6kg.
3. the wavelet analysis device of elastic wave according to claim 1 exploration, is characterized in that: the described metal piece that shakes is metal square plate or the rectangle of thick 1～2cm, the length of side 15～25cm; Or be diameter 15～25cm circular metal dish; Or be the Metallic rod of diameter 2cm～4cm, long 20～40cm; Or be the derby of 5～10cm × 5～10cm × 5～10cm.
4. the wavelet analysis device of elastic wave exploration according to claim 1, is characterized in that: described power supply is battery.
5. the wavelet analysis device of elastic wave exploration according to claim 1, is characterized in that: described wave detector is that frequency range is the wideband wave detector of 10Hz-8000Hz.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320627362.4U CN203688809U (en) | 2013-10-11 | 2013-10-11 | Wavelet analysis device for elastic wave exploration |
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| CN201320627362.4U CN203688809U (en) | 2013-10-11 | 2013-10-11 | Wavelet analysis device for elastic wave exploration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487826A (en) * | 2013-10-11 | 2014-01-01 | 钟世航 | Wavelet analysis device for elastic wave exploration and shocking method of wavelet analysis device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487826A (en) * | 2013-10-11 | 2014-01-01 | 钟世航 | Wavelet analysis device for elastic wave exploration and shocking method of wavelet analysis device |
| CN103487826B (en) * | 2013-10-11 | 2016-04-27 | 钟世航 | A kind of wavelet analysis device of elastic wave exploration and the method that impulses thereof |
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