JP2530252Y2 - Geophone installation base for reflection seismic detector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflection seismic survey device used for performing a ground survey when performing civil engineering works such as a non-cutting propulsion method or a shield method, and in particular, an elastic wave reflected in the ground. Field of the Invention The present invention relates to a geophone installation base for a reflection method seismic survey device for installing a geophone on a ground for detecting a wave.

[0002]

2. Description of the Related Art Conventionally, reflection seismic exploration has been used for exploration of resources such as oil and coal from several hundred meters to several thousand meters underground. A method of exploring the geological situation by detecting the elastic waves reflected in the ground by deploying them on the survey line using multiple geophones installed, recording the data, processing and analyzing it. is there. In order to install a geophone on the ground when conducting a reflection seismic survey on the ground, it is necessary to faithfully transmit the vibration of the ground to the geophone. To fix the geophone to the ground. This will be described with reference to FIGS.

FIG. 3 is a cross-sectional view showing a state where a geophone is installed on a ground without pavement by a conventional installation method, and FIG. 4 is a cross-sectional view showing a state where a geophone is installed on a ground with pavement by a conventional installation method. It is. In these figures, reference numeral 1 denotes a geophone, and a spike-shaped fixed body 2 as a wedge-shaped member is attached to a lower portion of the geophone. Reference numeral 3 denotes a ground, and when the vibration receiver 1 is installed on the ground 3, the fixed body 2 is directly inserted into the ground 3 as shown in FIG. By doing so, the vibration of the ground 3 can be faithfully transmitted to the geophone 1. 4 is a pavement surface, 5 is an oil clay, and the oil clay 5 is in close contact with the upper surface of the pavement surface 4.
When the geophone 1 is installed on a pavement surface, the oil clay 5 is raised on the pavement surface 4 so as not to damage the pavement surface 4 as shown in FIG. The fixed body 2 was inserted into the oil clay 5.

[0004]

However, when the geophone 1 is fixed using the fixed body 2 as described above, the vibration of the ground 3 or the pavement surface 4 must be transmitted to the geophone 1 faithfully. The fixed body 2 must be tightly inserted into the ground 3 or oil clay 5. That is, the installation work must be performed carefully, and since the fixed body 2 that is tightly inserted is hard to come off, the installation and removal work of the vibration receiver 1 requires a great deal of labor and time. In addition, since the oil clay 5 is difficult to be shaped in a low-temperature environment, the work efficiency is reduced when the vibration receiver 1 is installed on the pavement surface 4 in winter or the like. In addition, the oil clay 5 hardly adheres to the pavement surface 4 if a small amount of sand or dust is present on the pavement surface 4, and the oil receiver 5
The reflected wave will not be transmitted accurately. Furthermore, the use of the oil clay 5 in this manner also has a problem that the installation condition of the geophone 1 cannot be made the same at a place without pavement and at a place with pavement. The present invention has been made in order to improve such a problem, and an object of the present invention is to provide a geophone installation base which has good workability and can install a geophone under the same conditions regardless of whether it is paved or unpaved. .

[0005]

According to the present invention, there is provided a seismic receiver for a reflection seismic survey device according to the present invention, which includes a mounting base body made of a columnar-shaped heavy object, and an underground light emitted from an oscillating device. And a geophone support member for fixing a geophone for detecting an elastic wave on the installation base main body, wherein the geophone support member is bolted to the installation base main body and is interposed between the installation base main body. Is formed by a fixing plate that holds the pressure.

[0006]

The vibration receiver is integrally supported by the installation base body. For this reason, the geophone installation work is completed only by placing the installation base body on the ground or on a pavement surface.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS. FIG. 1 is a front view of the geophone installation base according to the present invention, and FIG. 2 is a side view of the geophone installation base according to the present invention. In these figures, the same or equivalent members as those described in FIG. 3 and FIG. 4 are denoted by the same reference numerals, and detailed description is omitted. In these figures, 1
Reference numeral 1 denotes an installation base main body. The installation base main body 11 is formed in a prismatic shape by a metal material, and a pedestal portion 12 for fixing the vibration receiver 1 is integrally protruded from an upper surface thereof. In this embodiment, the pedestal portion 12 has a concave curved surface 12a formed on an upper surface thereof so that a lower portion of the geophone 1 is fitted into the pedestal portion 12, and a bolt hole 13 into which a fixing bolt of a geophone support member described later is screwed. Is provided. Reference numeral 14 denotes a fixing plate for fixing the vibration receiver 1 to the installation stand main body 11, and 15 denotes this fixing plate 14.
Are fixed bolts to the installation base body 11. The fixed plate 14 and the fixed bolts 15 constitute a geophone support member. The fixed plate 14 is formed in a flat plate shape, and a lower surface thereof is formed with a concave curved surface 14a into which an upper portion of the vibration receiver 1 is fitted. The fixing bolt 15 penetrates through the fixing plate 14 and is screwed into the bolt hole 13 of the pedestal portion 12. 16 is a handle, and this handle 1
6 is fixed by being inserted into mounting holes 17 provided on the left and right sides of the installation base body 11. The mounting hole 17 is provided with the handle 16 when the vibration receiver 1 is mounted on the installation base body 11.
It is positioned so that the balance of gravity can be obtained when you hold it.

Next, a procedure for mounting the geophone 1 on the geophone mounting base thus configured will be described. First, the vibration receiver 1 is placed on the concave curved surface 12 a of the pedestal portion 12, and the fixing plate 14 is placed on the upper portion of the vibration receiver 1. At this time, the vibration receiver 1 is fitted to the concave curved surface 14a of the fixing plate 14. Then, the fixing bolt 15 is passed through the fixing plate 14, and the lower end thereof is screwed into the bolt hole 13 of the pedestal portion 12. By fastening this fixing bolt 15 to the base 12,
The geophone 1 is held by the pedestal portion 12 and the fixing plate 14 and is fixed to the installation main body 11. When the geophone 1 is attached to the installation base main body 11 in this manner, the vibration receiver 1 vibrates integrally with the installation base main body 11, so that the ground vibration can be reduced only by placing the installation base main body 11 at a predetermined position on the measurement line. Can be detected. In addition, the handle 16 is moved to move the installation base body 11. Since the handles 16 are arranged in consideration of the balance, installation and removal of the geophone installation table can be easily performed. Therefore,
Since the geophone 1 is integrally supported by the installation base body 11,
Simply placing the installation base body 11 on the pavement surface 4 completes the geophone installation work.

Further, if the geophone 1 is fixed by the bolt-type geophone support member as shown in this embodiment, even if the geophone 1 is out of order, it can be easily replaced. .

In this embodiment, an example in which the geophone receiver is installed on the pavement surface 4 has been described. However, the present invention can be installed on an unpaved surface without being limited to such a limitation. When installed on an unpaved surface, the weight is used to adjust the unpaved surface because the installation base body 11 is a heavy object, so that the same effect as when it is placed on the paved surface 4 can be obtained. Further, in the present embodiment, the installation base body 1
1 shows an example in which the pedestal portion 12 is provided integrally, but the pedestal portion 12 is not necessarily required. That is, the mounting base body 1
The vibration receiver 1 can also be directly fixed to the installation base body 11 by integrally molding the vibration receiver fitting portion with the mounting base body 1.

[0011]

[Effect of the Invention] As described above, the seismic receiver installation base for the reflection method seismic detector according to the present invention is composed of an installation base body made of a pillar-shaped heavy object, and an underground light emitted from an oscillation device. And a vibration receiver supporting member for fixing the vibration receiver for detecting the elastic wave on the mounting table main body. The vibration receiver supporting member is bolted to the mounting table main body to receive vibration between the mounting table main body. Since the receiver is formed by the fixing plate for holding the pressure, the receiver is integrally supported by the installation base body. For this reason, since the geophone installation work is completed only by placing the installation base body on the ground or on a pavement surface, labor for installing and removing the geophone can be reduced, and the work time can be shortened. In addition, it is not affected by environmental conditions such as the road surface condition and the temperature at the time of the survey. Further, since the installation condition of the geophone can be the same regardless of whether it is paved or unpaved, the efficiency of the measurement operation is improved because the data quality is stabilized.

[Brief description of the drawings]

FIG. 1 is a front view of a geophone receiver according to the present invention.

FIG. 2 is a side view of the geophone receiver according to the present invention.

FIG. 3 is a cross-sectional view showing a state where a geophone is installed on the ground without pavement by a conventional installation method.

FIG. 4 is a cross-sectional view showing a state where a geophone is installed on a ground with pavement by a conventional installation method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Geophone 4 Pavement surface 11 Installation base body 14 Fixing plate 15 Fixing bolt

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kaoru Nishida 3-1-2, Ikebukuro, Toshima-ku, Tokyo Inside the diamond consultant (72) Inventor Terumitsu Tsuchiya 3-1-2, Ikebukuro, Toshima-ku, Tokyo In the formula company diamond consultant

Claims (1)

(57) [Scope of request for utility model registration] 1. A receiver supporting member for fixing an installation base body made of a heavy object formed in a columnar shape and a vibration receiver for detecting an elastic wave emitted from an oscillating device and reflected in the ground on the installation base body. Wherein the geophone support member is formed by a fixing plate that is bolted to the installation base main body and holds the geophone between the installation base main body and pressure holding. For the geophone.