JPH11190777A - Vibration detector, fixing method and fitting therefor and method for measuring ground propagation speed of vibration wave using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance workability while preventing erroneous measurement due to artificial miss by fixing a plurality of vibration detectors removably at given intervals to a long body, arranging an object for measurement integrally with the long body and then removing the long body. SOLUTION: A shaker 11 is set in the direction of a vertical line to the surface of ground 12. A long body 22 fixed integrally with vibration detectors 13 is arranged such that the shaker 11 is located on the longitudinal extension of the long body 22. While keeping the long body 22 in horizontal state using a level, an anchor means 14 fixed to the forward end of the detector 13 is driven into the ground 12 thus anchoring the detector 3. Subsequently, the long body 22 is removed. According to the method, the vibration detectors 13 are arranged in a row in the direction of vertical line on the ground 12 at intervals of S1, S2 and S3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for mounting a vibration detector used for measuring physical properties of the ground and the like, and a mounting device for the same, and a method for measuring the propagation velocity of vibration waves in the ground using the same. About.

[0002]

2. Description of the Related Art Conventionally, when measuring the physical properties of the ground, a vibration wave generated by applying vibration to the ground is detected by a vibration detector, and particularly a surface wave vibrating in the vertical direction. Rayleigh waves were detected, and the permissible bearing capacity of the ground was determined based on the propagation speed.
33578, JP-A-6-116934, etc.). This Rayleigh wave is empirically 1 /
Since it corresponds to the property of the stratum having a depth of two wavelengths, it is also possible to investigate the physical properties of the ground in the depth direction by, for example, making the frequency of vibration applied to the ground variable (Japanese Patent Publication No. Hei 2- No. 13249).

By the way, in the above ground survey, when obtaining the propagation speed of a Rayleigh wave, it is necessary to accurately install a vibration detector on the same straight line from a vibration source. However, according to the conventional method, it takes time to install the vibration detector, and a measurement error occurs due to an error in the installation position of the detector. In addition, as shown in FIG. 10, a conventional method of mounting a vibration detector is as follows.
The vibration detectors c1 to c4 are installed every time, but depending on the structure of the ground, the vibration detectors may be installed at an inclination like c3 and c4.

When the vibration detector is installed at an angle, the vibration detector detects not only a Rayleigh wave, which is a vertical vibration component, but also a composite wave with a Love wave, which is a horizontal vibration component. I will.

[0005] Furthermore, the inconvenience of installing the vibration detector may cause an erroneous measurement such as an incorrect connection of the cable of the vibration detector.

Therefore, as described in Japanese Patent Application Laid-Open No. 4-208820, a hole e for inserting a vibration detector is provided in an auxiliary plate d made of a lightweight material such as plastic as shown in FIG. Further, a structure has been proposed in which the vibration detector is held by a soft material to avoid restraint thereof.

[0007]

According to the above method, the natural frequency determined from the rigidity of the soft material and the mass of the auxiliary plate is:
By making it sufficiently lower than the frequency to be measured, the influence of the propagation of vibration by the soft material and the auxiliary plate is made to be small, but when the vibration given to the ground to be measured is of low frequency, Inevitably, the influence of vibration propagation by the soft material and the auxiliary plate is inevitable.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, improve workability in installing a vibration detector, maintain a predetermined distance between the vibration detectors, and use a vibration component in a vertical direction. Provided is a method of mounting a vibration detector capable of detecting only a certain Rayleigh wave and preventing erroneous measurement due to human error, a mounting device thereof, and a method of measuring a propagation speed of a ground vibration wave using the same. Is to do.

[0009]

According to a first aspect of the present invention, there is provided a method of mounting a vibration detector, wherein a plurality of vibration detectors are arranged at a predetermined interval on a long body when detecting a vibration wave propagated by vibrating an object to be measured. The elongate body is detachably attached to the measuring object, and the elongate body is removed after the elongate body is lined up with the object to be measured.

The elongated body may be, for example, a rigid body made of synthetic resin, wood or metal, a string-shaped flexible body such as a high tension wire, a rod antenna or a folding scale. It may be a rigid body that can expand and contract as shown in FIG.
In addition, disassembly, assembly,
Alternatively, it may be foldable. Furthermore, the above-mentioned elongated body may be attached to the object by attaching a plurality of vibration detectors in advance, or the elongated body may be attached to the object to be measured first, and then attached to the plurality of vibration detectors. You may.

The removal of the elongated body means that at least the vibration detector and the elongated body are kept out of contact with each other, and the elongated body is separately placed on the ground surface. It does not matter.

According to a second aspect of the present invention, there is provided a vibration detector mounting apparatus for mounting a plurality of vibration detectors on an object to be measured, wherein the vibration detector is provided at a predetermined interval between the long body and the long body. And a locking means capable of detachably attaching the vibration detector.

It is preferable that the elongate body be disassembled or folded so as to improve the ease of transportation of the mounting device. In particular, when the unit can be disassembled, the unit may be composed of a plurality of units having different lengths so that various intervals can be set in combination.

[0014] Further, the means for locking to the elongated body is connected via at least two or more elongated bodies, and the mounting position is set to be on the same straight line in the elongated direction. The fact that the long body can be split in half on one side improves the workability when installing the vibration detector, and can keep the separation distance of the vibration detector at a predetermined interval. After installation, the long body can be easily removed, which is preferable.

Further, in the above-mentioned locking means, it is preferable that the vibration detector is attached so as to be directed vertically to the elongated body, and the elongated body has means for indicating a horizontal direction. This is preferable because only Rayleigh waves, which are linear vibration components, can be detected.

In addition, since the shape of the locking means is different for each mounting position, the mounting position of the vibration detector can be uniquely determined, and it is necessary to check which vibration detector is installed where. It is preferable because it disappears. It should be noted that the locking means having a different shape is not necessarily limited to a locking tool, and may be a shape (including a size) of a fitting hole for fitting the locking tool. The shape (including the size) of the locked tool of the vibration detector to be engaged with the tool may be used. In this case, if the locked members of the vibration detector can be locked to locking members having different shapes, only one locked member corresponding to the shape of the locking member is used. It is more preferable because it can be stopped.

Further, the shape of the locking means is substantially C-shaped in cross section, and the long body is made of non-stretchable and flexible material. It is preferable because it can be stored. As the material of the long body,
A material with a small coefficient of thermal expansion, low bending stiffness,
Those that can be wound into a coil having a diameter of 30 cm are preferable.
Further, the tensile modulus is preferably 1000 kgf / cm 2 or more, and furthermore, a lightweight one is preferable in order to prevent sagging during extension.

[0018] Such materials include metal,
Examples thereof include resin chains, ribbons, convex lengths, steel wires, Kevlar fibers, glass fibers, and composite materials of these materials.

When an object to be measured is vibrated by a vibrator or the like, the end of a long body provided with locking means in a straight line is connected to the vibrator or the like, and the vibration detector is connected to the vibration detector. May be installed. By doing so, the exciter and the like and the vibration detecting device are aligned, which is preferable.

The vibration detector mounting device according to the present invention has a connection end for connecting the vibration detector at predetermined intervals to a non-stretchable and flexible elongate body. A wiring cable for transmitting a signal detected by the container to the receiver is provided integrally with the elongated body.

The mounting device may be divided into a plurality of units for easy carrying. Further, the unit may be composed of a plurality of units of different lengths so that various intervals can be set in combination.

It is preferable that the wiring cable provided integrally with the elongated body can be wound and accommodated, since the wiring cable can be compactly stored.

According to a tenth aspect of the present invention, there is provided a vibration detector to which the mounting device for the vibration detector according to the second aspect is attached. With the above configuration, the vibration detector can be mounted at an accurate position, and the detection of the vibration wave can be performed accurately.

According to a method for measuring the propagation velocity of a vibration wave on a ground according to the present invention, the vibration detector is mounted on the ground to be measured by using the method for mounting a vibration detector according to the first aspect.
A vibration wave propagated by vibrating the ground is detected by the vibration detector, and a propagation speed of the vibration wave of the ground is calculated from the vibration wave.

According to a twelfth aspect of the present invention, there is provided a method for measuring the propagation velocity of a ground vibration wave, wherein the vibration detector according to the tenth aspect is to be measured by using the vibration detector mounting method according to the second to ninth aspects. And a vibration wave propagated by vibrating the ground is detected by the vibration detector, and a propagation speed of the vibration wave of the ground is calculated from the vibration wave.

In order to calculate the propagation speed of the vibration wave on the ground, for example, the phase difference Δt between the vibration waves detected by the two vibration detectors is obtained, and the distance between the vibration detectors is divided by the phase difference Δt. Can be obtained by: The above phase difference Δ
In order to obtain t, the time difference at which the cross-correlation coefficient between the vibration waves detected by the two vibration detectors reaches a maximum value can be determined by, for example, fast Fourier transform (FFT) or frequency / wave number spectrum analysis.

In this case, for example, by detecting only the vertical component (Rayleigh wave) of the vibration wave with the vibration detector mounting device according to the fifth aspect, the allowable supporting force of the ground or , Shear modulus of elasticity.

By using the vibration detector according to the tenth aspect, it is possible to remove the mounting device of the vibration detector if necessary when measuring the vibration wave. You may.

[0029]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a state in which a vibration detector is mounted on the vibration detector mounting device according to the second embodiment. In FIG. 1, 13 is a vibration detector, 14 is a fixing means of the vibration detector, 21 is a locking member, 22 is a long body, and 23 is a fitting hole.

As shown in FIG. 1, the mounting device of the vibration detector according to the present invention comprises a long body 22 and a locking member 21.
The elongated body 22 is formed of a synthetic resin, and is provided with an engagement hole 23 as an engagement means on the same line in the elongated direction at intervals of distances S1, S2, and S3, respectively. . The engaging hole 23 has a sharp-tipped tip,
The vibration detector 13 having the
, And are arranged in a row with the elongated body 22. A level (not shown) is attached to the elongated body 22 in the longitudinal direction and the direction orthogonal to the elongated body 22. If the vibration detector 13 is attached so as to be directed vertically to the elongated body 22, the vertical This is preferable because only Rayleigh waves, which are linear vibration components, can be detected.

FIGS. 2A and 2B are diagrams for explaining a method of mounting the vibration detector according to the first embodiment. FIG.
Shows a cross-sectional view of the state before attaching to the ground 12,
(B) is a cross-sectional view of a state where the vibration detector 13 is attached to the ground 12, (c) is a cross-sectional view of a state where the elongated body 22 is removed after attaching the vibration detector 13 to the ground 12, (d) )
Shows a plan view of (c).

As shown in FIG. 2A, in the method of mounting the vibration detector according to the present invention, first, the vibrator 11 is installed on the ground 12. The vibrator 11 is installed so as to be in a vertical direction with respect to the ground surface. The vibrator 11 repeats a reciprocating motion in a substantially vertical direction by rotation of a cam (not shown) and a linear guide, and a Rayleigh wave, which is a vibration wave only in the vertical direction, is generated on the ground. The frequency of the Rayleigh wave is usually 1 to 150 Hz.

Next, the vibration detector 13 integrally attached to the elongated body 22 is prepared, and the elongated body 22 is set so that the vibrator is positioned on the elongated body 22 in the longitudinal direction. . In addition, a long body 2 so that it becomes horizontal in two directions with a spirit level
2 while holding the vibration detector 1 as shown in FIG.
The vibration detector 13 is fixed to the ground 12 by driving the fixing means 14 attached to the tip of the base 3 into the ground 12.

Next, as shown in (c), when the elongated body 22 is removed, the vibration detector 13 moves the distances S1, S2, S3 respectively.
Are arranged in the ground 12 at intervals of in the vertical direction.

FIGS. 3A and 3B show another example of a mounting device for a vibration detector according to the second aspect of the present invention, wherein FIG. 3A is a plan view thereof, and FIG.
Is a front view, and (c) is a plan view of a state where the vibration detector is attached to the ground. As shown in FIG. 3, the long body 22f is A
A link plate 27 is provided at the end of the -A 'line,
It can be developed so as to be linear with the line AA ′. A hook 28 is provided at the other end of the line AA '.
Is provided, and when folded, by fixing the ends, the folded state can be maintained. Further, when carrying the mounting device of the vibration detector, the handle 29 may be held.

A cutout 23f for fixing the vibration detector is provided on the side of the long body 22f opposite to the line AA ', and when the vibration detector is installed, as shown in FIG. 3 (c). Then, the long body 22f is unfolded 180 degrees, and the vibration detector 13 is fixed to the notch 23f, and the vibration detectors are arranged on the ground. First, a vibration detector mounting tool is installed on the ground, and the vibration detector 13 is cut out.
It may be attached to the ground from above f. Here, the notch 23f is cut to an appropriate depth when the mounting device of the vibration detector is developed. After placing the vibration detector on the ground, remove the mounting device of the vibration detector by pulling it horizontally.

FIG. 4 is a plan view showing still another example of the attachment of the vibration detector according to the second aspect. As shown in FIG. 4, the elongated body 22a has an engagement hole 2 on the line AA ′.
3 is provided, and a hinge 24 is provided at a position facing the line AA '.
Is provided, and the long body 22a can be half-divided on one side along the line AA '. By doing so, the workability when installing the vibration detector is improved, the separation distance between the vibration detectors is accurately maintained at a predetermined interval, and the elongated body 22a can be easily removed after the vibration detector is installed. It is preferred.

FIG. 5 shows still another example of the mounting device of the vibration detector according to the second aspect, wherein (a) is a plan view thereof.
(B) is a front view. As shown in FIG.
b, engaging holes 23a, 23b, 23c, 23d having different sizes along the long direction of the long body 22b.
The fixing means 14a, 14b, 14c, 14d of the vibration detector 13 have different thicknesses corresponding to the size. By doing so, the vibration detector 13
This is preferable because it is possible to unambiguously determine the mounting position of the device and it is not necessary to check which vibration detector is installed where.

FIGS. 6A and 6B show still another example of the mounting device of the vibration detector according to the second aspect, wherein FIG.
(B) is a perspective view, and (c) is a cross-sectional view. As shown in FIG. 6, the elongated body 22c is rotatably and detachably attached to the open end which is the upper part of the center of gravity G of the substantially C-shaped light-weight resin-made plane-symmetric locking tool 21a, and The tool 21a is connected and locked. The elongated body 22c is a non-stretchable and flexible cord-like member, and is made of a wire rope made of ordinary steel wire. Further, the locking member 21a is a lightweight body made of resin, and since the connection position of the elongated body 22c is located above the center of gravity G, the locking members at both ends are pulled and thus substantially C-shaped without being twisted. The groove inside the shape is always upright.

In order to attach the vibration detector to the object to be measured by using the above-mentioned attachment device for the vibration detector, for example, the cylindrical part of the vibration detector having a cylindrical part (not shown) in the locking member 21a is used. After being fitted and integrated into the elongated body 22c, the two ends are stretched and tensioned, and then stretched on the ground to be measured, and then the elongated body 22c and the locking member 21a are integrally removed. After the elongated body 22c is stretched on the ground in advance, the vibration detector is fitted into the locking member 21a to which the locking member 21a is attached, and the elongated body 22c is integrated with the elongated body 22c. And the lock 21a may be integrally removed.

FIG. 7 is a perspective view showing still another example of the mounting device of the vibration detector according to the second aspect. As shown in FIG. 7, the two elongated bodies 22 d are rotatably and detachably attached to the open end which is the upper portion of the center of gravity of the substantially C-shaped light-weight resin-made plane-symmetric locking tool 21 b, The locking tool 21b is connected and locked. The elongated body 22d is a non-stretchable, flexible, string-like member, and is made of a wire rope of ordinary steel wire. In addition, the locking member 21b is a lightweight body made of resin, and since the connection position of the long body 22d is located above the center of gravity, the locking member 21b is substantially C-shaped without being twisted by pulling the locking members at both ends. The internal groove is always upright. By using a plurality of elongated bodies 22d in this manner, the locking tool 21
b is preferable because it can be more stably upright.

FIG. 8 is a plan view showing still another example of the mounting device of the vibration detector according to the second aspect. As shown in FIG. 8, a notch 23 e on a semicircle for fixing a vibration detector is arranged in one side of the long body 22 e,
The vibration detector can be fixed to the notch 23e by a substantially C-shaped locking member 21c rotatably provided on the long body 22e.

FIG. 9 is an explanatory view showing an example of a mounting device for a vibration detector according to the present invention. As shown in FIG. 9, a string-like long body 22f having flexibility and being unable to expand and contract is provided.
And a connection end 25 for connecting the vibration detector at a predetermined interval.
And a wiring cable 26 for transmitting a signal detected by the vibration detector to a receiver (not shown) is stretched integrally with the elongated body 22e. According to the present invention, by connecting a vibration detector to the connection end 25, erroneous measurement due to a human error such as a cable connection error can be prevented. In the present invention, the elongated body 22e may be detachable from the wiring cable 26. In this case, after connecting the vibration detector to the connection end 25 and attaching it to the ground,
Only the elongated body 22e may be removed. By doing so, not only can vibration detectors be installed at predetermined intervals, but also wiring can be performed at the same time.

As shown in FIG. 10, the mounting device is a wiring cable 26 provided integrally with the elongated body 22f.
Is a pin-shaped cable container 1 fixed to a vibrator 11
3 can be wound and accommodated. A connection cable 27 is wired from the distribution cable 26 wound around the cable container 15 and connected to a receiver (not shown).

To calculate the propagation velocity from the ground vibration wave obtained as described above, for example, the cross-correlation coefficient between the vibration waves detected by the two vibration detectors is calculated by a fast Fourier transform (FFT). ), Etc., and dividing the distance of the vibration detector by the phase difference Δt at which the value is maximized.

[0046]

According to the first aspect of the present invention, a plurality of vibration detectors can be detachably attached to a long body at predetermined intervals in detecting a vibration wave propagated by vibrating an object to be measured. After installing, arranging the object on the measurement object and arranging it in a line, the elongate body is removed, so workability when installing the vibration detector is improved and the separation distance of the vibration detector is improved. At a predetermined interval.

According to a second aspect of the present invention, there is provided a vibration detector mounting device for mounting a plurality of vibration detectors on an object to be measured. , The vibration detector comprises a locking means that can be detachably attached. By using this mounting device, workability when installing the vibration detector is improved, and vibration detection is performed. The container separation distance can be accurately maintained at a predetermined interval.

According to a third aspect of the present invention, there is provided a vibration detector mounting device according to the second aspect, wherein the elongated body is splittable or foldable.
While improving the workability when installing the vibration detector,
The ease of transportation of the mounting device of the vibration detector is improved.

According to a fourth aspect of the present invention, there is provided the vibration detector mounting device according to the second or third aspect, wherein the mounting position of the locking means to the elongated body is in the longitudinal direction. Since the long body can be divided in half on one side, the workability when installing the vibration detector is improved, and the separation distance of the vibration detector is accurately set to a predetermined interval. In addition, the long body can be easily removed after the vibration detector is installed.

According to a fifth aspect of the present invention, there is provided the vibration detector mounting device according to any one of the second to fourth aspects, wherein the locking means is such that the vibration detector has a long body. It is attached so as to be directed perpendicular to the direction, and the elongated body has means for indicating the horizontal direction, so that the workability when installing the vibration detector is improved and the vibration is improved. Not only can the separation distance of the detector be accurately maintained at a predetermined interval, but also only the Rayleigh wave, which is a vibration component in the vertical direction, can be detected.

According to a sixth aspect of the present invention, in the vibration detector mounting device according to any one of the second to fifth aspects, the locking means has a different shape for each mounting position. Because of this, not only can the workability when installing the vibration detector be improved, the separation distance between the vibration detectors can be accurately maintained at a predetermined distance, but also the vibration detector mounting position can be uniquely determined. Therefore, it is not necessary to check which vibration detector is installed where, and human errors can be reduced.

According to a seventh aspect of the present invention, in the mounting device for a vibration detector according to the second or fifth or sixth aspect, the locking means has a substantially C-shaped cross section. Since the elongate body is made of a non-stretchable string, the elongate body can be stored compactly except when used.

According to the vibration detector mounting device of the present invention, the flexible elongate body has a connection end for connecting the vibration detector at predetermined intervals, and the connection is detected by the vibration detector. Since the wiring cable for transmitting the signal to the receiver is provided integrally with the long body, erroneous measurement due to a human error such as a cable connection error can be prevented.

According to a ninth aspect of the present invention, there is provided the vibration detector mounting device according to the eighth aspect, wherein the wiring cable provided integrally with the elongated body can be wound and accommodated. Therefore, erroneous measurement due to human error such as cable connection error can be prevented, and the wiring cable can be stored compactly.

According to a tenth aspect of the present invention, there is provided the vibration detector mounting device according to any one of the second to ninth aspects, so that the vibration detector is mounted at an accurate position. And vibration waves can be accurately detected.

According to the eleventh aspect of the present invention, there is provided a method for measuring the propagation velocity of a vibration wave on a ground, wherein the vibration detector is mounted on the ground to be measured by using the mounting method of the vibration detector according to the first aspect.
The vibration wave propagated by vibrating the ground is detected by the vibration detector, and the propagation speed of the vibration wave of the ground is calculated from the vibration wave. Therefore, the separation distance is accurate, and on the same straight line. The vibration detector can be attached to the ground so that the propagation speed of the ground vibration wave can be accurately measured, and the physical properties such as the allowable bearing capacity and shear modulus of the ground can be accurately measured. can do.

According to a twelfth aspect of the present invention, there is provided a method for measuring the propagation velocity of a ground vibration wave, wherein the vibration detector is mounted on the ground to be measured by using the vibration detector mounting tool according to the second to ninth aspects. The vibration wave propagated by vibration is detected by the vibration detector, and the propagation speed of the vibration wave of the ground is calculated from the vibration wave, so that the separation distance is accurate and on the same straight line. As the vibration detector can be attached to the ground as described above, the propagation speed of the vibration wave of the ground can be accurately measured, and the physical properties such as the allowable bearing capacity and the shear modulus of the ground must be accurately measured. Can be.

[Brief description of the drawings]

FIG. 1 is a front view showing a state in which a vibration detector is mounted on a vibration detector mounting device according to the second embodiment.

FIGS. 2A and 2B are diagrams illustrating a method of mounting the vibration detector according to claim 1, wherein FIG. 2A is a cross-sectional view showing a state before the vibration detector is mounted on the ground, and FIG. Sectional view of the state attached to the ground, (c) is a sectional view of the state after removing the long body after attaching the vibration detector to the ground,
(D) is a plan view of (c).

FIGS. 3A and 3B show another example of the mounting device of the vibration detector according to claim 2, wherein FIG. 3A is a plan view thereof, FIG.
(C) is a top view of the state where the vibration detector was attached to the ground.

FIG. 4 is a plan view showing still another example of the mounting device of the vibration detector according to the second embodiment.

FIGS. 5A and 5B show still another example of the mounting device of the vibration detector according to claim 2, wherein FIG. 5A is a plan view and FIG. 5B is a front view.

FIGS. 6A and 6B show still another example of the mounting device of the vibration detector according to claim 2, wherein FIG. 6A is a sectional view, FIG. 6B is a perspective view, and FIG.

FIG. 7 is a plan view showing still another example of the mounting device of the vibration detector according to the second embodiment.

FIG. 8 is a plan view showing still another example of the mounting device of the vibration detector according to the second embodiment.

FIG. 9 is an explanatory view showing an example of a mounting device of the vibration detector according to claim 6. It is an explanatory view showing other embodiments.

FIG. 10 is an explanatory view showing an example of a mounting device for the vibration detector according to claim 7;

FIG. 11 is a front view showing a conventional method of mounting a vibration detector.

FIG. 12 is a plan view showing another example of a conventional method of mounting a vibration detector.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 Vibrator 12 Ground 13 Vibration detector 14, 14a, 14b, 14c, 14d Fixing means 15 Cable container 21, 21a, 21b, 21c Locking tool 22, 22a, 22b, 22c, 22d, 22e, 22
f Long body 23, 23a, 23b, 23c, 23d Fitting hole 25 Connection end 26 Wiring cable

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Yoko Mizuochi 32 Wadai, Tsukuba, Ibaraki Sekisui Chemical Co., Ltd.

Claims (12)

[Claims] In detecting a vibration wave propagated by vibrating an object to be measured, a plurality of vibration detectors are detachably attached to a long body at predetermined intervals, and are integrally attached to the long body with the object to be measured. A method for mounting a vibration detector, comprising removing a long body after arranging the vibration detector. 2. A vibration detector mounting device for mounting a plurality of vibration detectors on an object to be measured, wherein the vibration detector is detachably attached to a long body and provided at predetermined intervals on the long body. A mounting device for a vibration detector, comprising: 3. The mounting device for a vibration detector according to claim 2, wherein the elongated body is configured to be disassembled or foldable. 4. The mounting position of the locking means on the elongated body,
4. The elongate body is made to be on the same straight line with respect to the elongate direction, and the elongate body can be split in half on one side.
A mounting device for the vibration detector described. 5. The locking means is attached such that the vibration detector faces in a direction perpendicular to the longitudinal direction of the elongated body,
The mounting device for a vibration detector according to any one of claims 2 to 4, wherein the elongated body has means for indicating a horizontal direction. 6. The mounting device for a vibration detector according to claim 2, wherein said locking means has a different shape for each mounting position. 7. The device according to claim 2, wherein the shape of the locking means is substantially C-shaped in cross section, and the elongated body is made of non-stretchable and flexible material. A mounting device for the vibration detector described. 8. A connection end for connecting a vibration detector at predetermined intervals to a non-stretchable and flexible elongate body,
A mounting device for a vibration detector, wherein a wiring cable for transmitting a signal detected by the vibration detector to a receiver is provided integrally with the elongated body. 9. A mounting device for a vibration detector according to claim 8, wherein the wiring cable provided integrally with the elongated body can be wound and accommodated. 10. A vibration detector to which the mounting device of the vibration detector according to claim 2 is attached. 11. A method for mounting a vibration detector according to claim 1, wherein the vibration detector is mounted on a ground to be measured, and a vibration wave propagated by vibrating the ground is detected by the vibration detector. A method for measuring the propagation speed of a ground vibration wave, comprising calculating a propagation speed of the ground vibration wave from the vibration wave. 12. The vibration detector according to claim 2, wherein the vibration detector is attached to the ground to be measured, and the vibration wave propagated by vibrating the ground is
A method for measuring the propagation speed of a ground vibration wave, wherein the vibration wave is detected by the vibration detector and the propagation speed of the ground vibration wave is calculated from the vibration wave.