JP4954755B2 - Ground penetration machine and sounding tester - Google Patents

Description

  The present invention relates to a ground penetrating machine and a sounding tester.

  As a ground penetrating machine for measuring the groundwater level, the present applicant, in the previous application, was provided with a ground penetrating rod, and the rod detected the presence of water with the water detection sensor and the water detection sensor. When the water detection sensor reaches the depth of the groundwater in the process of driving the rod into the ground, it detects that and transmits a radio wave from the transmitter. A sounding tester was proposed which measures the level of groundwater received by a receiver.

Also, as a soil penetration machine for soil judgment, a rod for ground penetration having a resistor at the tip is provided, and the rod is used as a vibration transmission member for rubbing vibration between the resistor at the tip of the rod during ground penetration and the ground. There has also been proposed a sounding tester that is sent to the ground and detects its vibration on the ground to determine the soil quality.
JP 2002-348846 A JP 2003-253659 A

  However, in the ground penetrating machine for measuring the groundwater level as described above, even if the radio wave from the transmitter is transmitted to the ground through the ground, for example, if the groundwater level is deep, the radio wave from the transmitter may reach the ground. It is difficult to reach and may cause problems in groundwater level measurement.

  Also, in the soil penetrating machine for soil judgment as described above, the friction vibration between the resistor at the tip of the rod and the ground is detected by sending the rod to the ground as a vibration transmission member. However, it is difficult to obtain highly accurate vibration data, and it is difficult to accurately determine the soil quality.

  In view of the above problems, the present invention has an object to provide a ground penetrating machine and a sounding tester capable of receiving information obtained in the ground with good sensitivity according to the purpose on the ground. And

The above problem is provided with a ground penetration rod,
The rod is provided with a water detection sensor and a transmitter that transmits a radio wave indicating that the water detection sensor has detected the presence of water,
The radio wave from the transmitter is solved by a ground penetrating machine characterized in that the rod is used as an antenna to be sent to the ground (first invention).

  This ground penetrating machine is configured as a ground penetrating machine for groundwater level measurement, and since the radio waves from the transmitter are sent to the ground using the rod as an antenna, the groundwater level seems to be deep. Even in such a case, the radio wave can be received with high sensitivity on the ground. Therefore, the groundwater level can be measured accurately and reliably.

In addition, the above problem is provided with a rod for ground penetration,
The rod is provided with a water detection sensor and a transmitter that vibrates and transmits the presence of water detected by the water detection sensor,
The vibration from the transmitter is also solved by a ground penetrating machine characterized in that the rod is used as a vibration transmission material to be sent to the ground (second invention).

  This ground penetrating machine is also configured as a ground penetrating machine for groundwater level measurement, and a transmitter that transmits vibration is used so that the vibration from the transmitter can be sent to the ground via a rod. Therefore, even when the groundwater level is deep, the vibration is transmitted well to the upper end of the rod, and the vibration can be received with high sensitivity on the ground. Therefore, the groundwater level can be measured accurately and reliably. In this case, since it is only necessary to detect the presence or absence of vibration, even if the vibration from the transmitter attenuates somewhat in the process of transmitting the rod, the sensitivity is not affected.

In addition, the above problem is provided with a ground penetration rod having a resistor at the tip,
The tip of the rod is provided with a vibration measuring device and a transmitter that transmits the vibration data measured by the vibration measuring device.
The radio wave from the transmitter is solved by a ground penetrating machine characterized by being sent to the ground using the rod as an antenna (third invention).

  This ground penetrating machine is configured as a soil penetrating machine for soil determination, and since the radio wave from the transmitter is sent to the ground using the rod as an antenna, the radio wave transmitter is a resistor. Even if it is located deep underground with a vibration measuring device, the radio wave can be received with high sensitivity on the ground. Therefore, coupled with the fact that the vibration measuring device is provided at the tip of the rod, it is possible to accurately determine the soil soil quality deep underground.

  In the sounding tester for groundwater level measurement (fourth invention) characterized in that the rods of the first, second and third inventions are used as ground penetration rods, the information obtained in the ground together with the sounding test is obtained. It is possible to receive with good sensitivity on the ground, and the time and labor required for these can be reduced.

  Since the present invention is as described above, information obtained in the ground can be received on the ground with good sensitivity according to the purpose.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings.

  The ground penetrating machine according to the first embodiment shown in FIGS. 1 and 2 is configured as a groundwater level measuring machine and applied to the Swedish sounding tester 1, wherein 2 is a ground penetrating rod, and the rod The tip of 2 is provided with a screw point 3 as a resistor, and the screw point 3 can open a hole 5 having a size larger than the outer diameter of the rod 2 in the ground 4. The head of the rod 2 is provided with a turning handle 6 and a weight 7 can be attached to the upper portion of the rod 2.

  In the sounding tester 1, the rod portion 2a adjacent to the screw point 3 on the upper side is provided with a groundwater level detection mechanism. Specifically, the rod 2 is composed of a component rod 2a incorporating a groundwater level detection mechanism and one or a plurality of general component rods 2b. As a rod portion, a general component rod 2b is connected thereon to constitute the rod 2, and the screw point 3 is connected to the lower end portion of the component rod 2b incorporating a groundwater level detection mechanism. Has been made. In this embodiment, as shown in FIG. 2 (a), the connection can be made with screw type 8,9.

  As shown in FIGS. 2A and 2B, the component rod 2a having a built-in groundwater level detection mechanism is adjacent to the bottomed shaft hole 10 opened at the upper end and the lower side of the shaft hole 10, A water introduction hole 11 that penetrates the component rod 2a in a direction orthogonal to the axial direction is provided. The shaft hole 10 is provided with a water detection sensor 12, a radio wave transmitter 13 and a battery 14 from below, and the upper part rod 2b adjacent to the upper part of the lower part rod 2a. The battery 14 is held in the shaft hole 10 by the screw connection 9.

  Further, the water detection sensor 12 has a contact 12a protruding through the bottom wall of the shaft hole 10 into the water introduction hole 11, and the groundwater entering the water introduction hole 11 from the side contacts the contact 12a. By doing so, a radio wave is transmitted from the transmitter 13, and the radio wave from the transmitter 13 is sent to the ground using the rod 2 as an antenna.

  A sponge 15 is placed in the water introduction hole 11 so that surrounding soil does not directly touch the contact 12a of the water detection sensor 12. Further, a waterproof packing is inserted between the shaft hole 10 and the water introduction hole 11 so that the groundwater entering the water introduction hole 11 does not enter the shaft hole 10.

  In the above-described Swedish sounding tester 1 also used for groundwater level measurement, in the process of performing a sounding test with the rod 2 penetrating into the ground 4, as shown in FIG. When the water level exceeds 16 and the groundwater 16 enters the water introduction hole 11 of the rod 2 and comes into contact with the contact 12a of the water detection sensor 12, the transmitter 13 performs radio wave transmission, and the rod 2 is used as an antenna. Is transmitted to the ground, the radio receiver 17 receives the radio wave, and the display means such as the lamp 17a and the speaker 17b provided in the receiver 17 displays that the groundwater 16 has been detected. ing. When the fact that the groundwater 16 is detected is displayed on the lamp 17a or the speaker 17b, the water level of the groundwater 16 can be obtained by confirming the penetration depth of the rod 2 at that time. In the present embodiment, the sounding value can be measured by an automatic measuring machine, 18 is a wiring, and the received signal from the receiver 17 is taken in a data logger (not shown), and the ground penetration resistance value data and the groundwater level are obtained. Measurement data is centrally managed.

  As described above, in the sounding tester 1 described above, the radio wave from the transmitter 13 is transmitted to the ground using the rod 2 as an antenna. Therefore, even if the groundwater level is deep, the radio wave Can be received with high sensitivity on the ground, and the groundwater level can be accurately and reliably measured.

  Of course, without removing the rod 2 from the ground 4, the groundwater measuring part of the rod 2 detects the presence of the groundwater 16 at an early stage when the groundwater measuring part of the rod 2 reaches the level of the groundwater 16 and Therefore, for example, even when the groundwater 16 exists under the non-drainage layer and the groundwater 16 is under water pressure, the water level of the groundwater 16 can be accurately measured.

  The ground penetrating machine of the second embodiment shown in FIG. 3 is also configured as a groundwater level measuring machine and is also applied to the sounding test machine 1, and the vibration transmitter 20 is used instead of the radio wave transmitter as the transmitter. Therefore, the vibration from the vibration transmitter 20 is sent to the ground using the rod 2 as a vibration transmitting material. And in this embodiment, the vibration receiver 21 is provided in the upper end part of the rod 2 which protrudes on the ground, and this receiver 21 receives the vibration from the vibration transmitter 20. FIG. The vibration receiver 21 may be omitted, and the vibration of the upper end portion of the rod 2 may be sensed by a human hand, or the vibration may be received by other vibration receiving means. Others are the same as in the first embodiment.

  Also in this sounding test machine 1, the vibration from the transmitter 20 is transmitted to the ground through the rod 2, so even if the groundwater level is deep, the vibration of the rod 2 The vibration is transmitted well to the upper end, and the vibration can be received with good sensitivity on the ground, and the groundwater level can be measured accurately and reliably.

  In particular, when a resistor such as a screw point 3 is provided at the tip of the rod 2 as in this embodiment, a gap is formed between the rod 2 and the peripheral wall of the hole 5 of the ground 4. The vibration from the vibration transmitter 20 can be transmitted to the ground with little attenuation through the rod 2, and the sensitivity can be improved.

  The ground penetrating machine of the third embodiment shown in FIGS. 4 and 5 is configured as a soil classifier and is applied to the sounding tester 1. The rod 2 has a vibration measuring device 31 and A transmitter 13 for transmitting the vibration data measured by the vibration measuring device 31 to a radio wave is provided, and the radio wave from the transmitter 13 is sent to the ground using the rod 2 as an antenna. Others are the same as in the first embodiment.

  In the Swedish sounding tester 1 with the soil discrimination function, the rubbing vibration between the screw point 3 and the ground 4 generated in the process of performing the sounding test by penetrating the rod 2 into the ground 4 near the screw point 3. Since the vibration data is always measured by the vibration measuring device 31 and the vibration data is oscillated by the transmitter 13, and the radio wave is transmitted to the ground using the rod 2 as an antenna, the screw point 3 and the vibration measuring device 31 are used. Even when the radio wave transmitter 13 is located deep underground, the radio wave can be received with good sensitivity on the ground, and the vibration measuring device 31 is provided at the tip of the rod 2. As a result, the soil quality of the ground 4 can be accurately determined deep underground.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, the above embodiment describes the case where the local ground penetration machine is applied to the sounding test machine, but it may be configured as a ground penetration machine dedicated to groundwater level measurement or a ground penetration machine dedicated to soil determination. The configuration may also be used with other testing machines.

It is a front view which shows the sounding test machine combined with the groundwater level measurement of 1st Embodiment. Fig. 1 (a) is an enlarged cross-sectional side view showing a groundwater detection mechanism portion in the test machine, and Fig. (B) is an enlarged front view of the same. Fig. (A) is a front view showing a sounding tester for groundwater level measurement of the second embodiment. Fig. (B) is an enlarged sectional side view showing a groundwater detection mechanism part in the tester. ) Is an enlarged front view of the same. It is a front view which shows the sounding test machine with the soil quality discrimination | determination function of 3rd Embodiment. It is a sectional front view which expands and shows the soil quality discrimination | determination mechanism part with which the rod front-end | tip part of the testing machine was equipped.

Explanation of symbols

1 ... Swedish sounding tester (ground penetration machine)
2 ... Rod (antenna; vibration transmission material)
4 ... Ground 11 ... Water introduction hole 12 ... Water detection sensor 13 ... Radio wave transmitter 16 ... Groundwater 20 ... Vibration transmitter 31 ... Vibration measuring instrument

Claims (3)

The ground penetration rod is provided,
The rod is provided with a water detection sensor and a transmitter that transmits a radio wave indicating that the water detection sensor has detected the presence of water,
A ground penetrating machine characterized in that radio waves from the transmitter are sent to the ground using the rod itself as an antenna . Provided with a ground penetration rod with a resistor at the tip,
The tip of the rod is provided with a vibration measuring device and a transmitter that transmits the vibration data measured by the vibration measuring device.
A ground penetrating machine characterized in that radio waves from the transmitter are sent to the ground using the rod itself as an antenna. A sounding tester characterized in that the rod according to claim 1 or 2 is a ground penetration rod.

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