JP3983345B2 - Sediment collector and sediment collection method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an earth and sand collector used for collecting earth and sand as a sample to be analyzed.
[0002]
[Prior art]
In order to analyze the characteristics of the soil, it may be necessary to collect the soil as a sample at an arbitrary position. In such a case, conventionally, a boring method is widely used.
[0003]
In this boring method, a pipe is driven perpendicularly to the ground at an arbitrary point, the earth and sand filled in the pipe is taken out, and earth and sand at an arbitrary depth are collected. Therefore, when there is earth and sand to be collected directly under the structure, it is impossible to use this boring method.
[0004]
[Problems to be solved by the invention]
The present invention has been made paying attention to the above-mentioned problems, and provides and uses a sediment collector that can freely collect soil at an arbitrary depth at an arbitrary point regardless of the existence of a structure. .
[0005]
[Means for Solving the Problems]
The inventor of the present application has conducted intensive research to solve the above-mentioned problems, and if the propulsion method used for the long pipe burial work is improved, regardless of the existence of the structure, the arbitrary depth of the arbitrary point can be obtained. The inventor has obtained knowledge that a means for freely collecting earth and sand can be provided, and the following invention has been completed based on the knowledge.
[0006]
The above-mentioned propulsion method will be briefly described as follows. That is, in the propulsion method, as a first stage, a drilling tool is connected to one end of a pipe, and the drilling tool is pushed forward from the ground through the pipe to form a narrow hole in the ground. In this case, in order to soften the soil and facilitate excavation, water is sent from the ground through a pipe, and a narrow hole is provided while water is ejected from the tip of the excavator. Since this excavator can control the excavation direction from the ground, the narrow hole can be extended in any direction.
[0007]
Next, as a second stage, the excavation tool is taken out from a position (exit) different from the position (inlet) where it is put on the ground, and a long tube is connected to the tip of the pipe instead of the excavation tool. Using the narrow hole provided in the stage as a guide, the long tube is buried in the ground so that the long tube is pulled out from the entrance direction while expanding the narrow hole.
[0008]
That is, in this propulsion method, the first step is not limited to the direction perpendicular to the ground surface, and a narrow hole can be provided in any direction. And if you use this as a guide and send a sediment collector to the ground, you can collect sediment at any position regardless of the structure on the ground surface.
[0009]
Therefore, the earth and sand collecting device of the present invention is as follows to enable use in the propulsion method. That is, the earth and sand sampling device of the present invention is a cylindrical main body provided with a sampling port for taking in earth and sand and capable of storing earth and sand inside, a lid that can cover the sampling port, And a connecting portion that is provided at the rear end of the main body and connects the main body to the pipe, and the sampling port can be closed by pressing the lid body outward by water pressure supplied through the pipe, and supplied through the pipe. By sucking the water, the lid body is drawn inward of the main body so that the sampling port can be opened.
[0010]
That is, the earth and sand sampling device of the present invention can be connected to the pipe tip by the connecting portion. Therefore, this earth and sand sampler can be sent to a desired point where the earth and sand are to be collected while being pushed from the surface of the earth through the connected pipe while using the narrow hole provided at the front as a guide. Moreover, in this earth and sand collector, the main body shape which accommodates the collected earth and sand is made into the cylinder shape. This facilitates the movement of the earth and sand collector in the narrow hole.
[0011]
Furthermore, the earth and sand sampling device of the present invention is provided with a lid that can cover the sampling port provided at the tip of the main body. Therefore, while the earth and sand collector moves to the desired position to collect earth and sand, it is possible to prevent the earth and sand from entering the main body by covering the sampling port with the lid and closing it. As a result, only the earth and sand to be collected can be collected accurately.
[0012]
The opening and closing of the sampling port by the lid was performed by changing the water pressure supplied from the connected pipe. In the propulsion method, water can be originally supplied through a pipe, so that the opening and closing can be performed without any change to the existing apparatus used in the propulsion method. In the present invention, when water is supplied through a pipe, the lid is pressed outwardly of the main body by the water pressure so that it covers the sampling port, and when water supplied to the pipe is sucked, the main body is directed inward. The lid is pulled in so that it is separated from the sampling port and the sampling port is opened, so that the sampling port is opened and closed.
[0013]
More specifically, for example, the lid is a piston and a stopper is provided on the inside of the sampling port, and when water pressure is supplied through the pipe, the stopper is provided in front of the sampling port. The piston moves in the tip direction in the main body so that it is pressed and fixed, the sampling port is closed, and when the water supplied through the pipe is sucked, the piston moves back in the main body so that it is separated from the sampling port The sampling port can be opened and closed by moving in the direction to open the sampling port. The pressure of the supplied water may be applied to the lid through the main body as in this case, or may be applied to the lid through another small chamber provided for driving the lid. You may make it do.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. In the description of each embodiment, the same reference numerals are used for overlapping portions, and the overlapping description is omitted.
[0015]
1st Embodiment: FIG.1 and FIG.2 is a figure which shows 1st Embodiment of this invention. A shows a sediment collector. The main body 1 is a metallic cylindrical body, and a sampling port 2 with a mortar taper is provided at the tip thereof. In addition, a piston 3 as a lid that is slidable inside the main body 1 is provided inside the main body 1. An O-ring 4 is attached to the outer periphery of the piston 3 in order to improve the sealing performance between the outer periphery of the piston 3 and the inner periphery of the main body 1. A stopper 5 is provided slightly in front of the sampling port 2 on the inner periphery of the main body 1 so that the piston 3 stays inside the main body 1. Moreover, the connection part 6 is provided in the rear end of the main body 1, and this earth and sand extractor A and the pipe 7 can be connected now. The connecting portion 6 is hollow and allows the pipe 7 and the inside of the main body 1 to communicate with each other. In addition, the front-end | tip part 8 of the main body 1 including the connection part 6 and the stopper 5 can be removed from the main body 1. FIG.
[0016]
Next, the usage method of this earth and sand extractor A is demonstrated with reference to FIG. In using this earth and sand collection container A, prior to that, a narrow hole 9 that reaches the position where the earth and sand are to be collected using a drilling tool is provided. And the earth and sand sampling device A connected with the tip of the pipe 7 through the connecting portion 6 is inserted into the narrow hole 9 and the pipe 7 is pressed from the ground, so that the earth and sand sampling device reaches the point where the earth and sand are to be collected. Push A. When the earth and sand collector A is moving in the narrow hole 9, the water is continuously supplied from the ground through the pipe 7, and the piston 3 is pressed and fixed to the stopper 5 by the pressure generated by the supplied water. Accordingly, since the piston 3 continues to be positioned immediately in front of the sampling port 2, the sampling port 2 is kept closed while the earth and sand sampling container A is moving. At this time, since the fine hole 9 serves as a guide, it is relatively easy to push forward the sediment collector A. Note that B in FIG. 3 is an apparatus used in the conventional propulsion method, and can feed the pipe 7 and supply water to the pipe 7.
[0017]
When the earth and sand collector A reaches the position where the earth and sand are to be collected, the water supplied through the pipe 7 is sucked from the ground. As a result, water in the main body 1 is also sucked, and the piston 4 is moved to the rear end of the main body 1 (see the imaginary line shown in FIG. 1), and the sampling port 2 is opened. And if the sampling port 2 is made into an open state, the earth and sand sampling device A will be pushed forward about the length of the main body 1, and sediment will be sampled from the sampling port 2. Since the sampling port 2 is provided with a mortar-shaped taper, earth and sand are efficiently collected. And when earth and sand are filled into the main body 1, the earth and sand sampling device A is pulled out from the narrow hole 9 through the pipe 7. And if the earth and sand with which the inside of the main body 1 was filled out, desired earth and sand can be obtained. In addition, since the front-end | tip part 8 and the connection part 6 can be removed from the main body 1 as mentioned above, earth and sand can be taken out from the main body 1 easily. As described above, sediment at an arbitrary position can be collected. In the test conducted by the present inventor, it was also possible to accurately collect the sediment at a point 100 m or more away from the entrance where the sediment collector A was inserted.
[0018]
Second Embodiment: FIG. 3 is a diagram showing a second embodiment of the present invention. This earth and sand collector is common to the earth and sand collector A of the first embodiment in that it includes a cylindrical main body 1 provided with a sampling port 2 at the tip thereof and a connecting portion provided at the rear end of the main body 1. To do. However, the lid of the earth and sand collecting device A of the second embodiment is provided only in the semicircular fixing plate 10 that is fixed so as to cover half of the circular tip surface of the main body 1 and in the internal direction of the main body 1. It consists of a semicircular movable plate 11 hinged to the fixed plate 10 so as to expand. When water pressure is supplied through the pipe, the movable plate 11 is fixed at a position on the same plane as the fixed plate 10 so that the sampling port 2 is closed, and the main body 1 is connected through the pipe. When the water inside is sucked, the movable plate 10 becomes free, and the sampling port 2 is in an open state where the sediment can be collected by pushing the sediment collector A forward.
[0019]
【The invention's effect】
Since the earth and sand collecting device of the present invention is as described above, it is possible to collect earth and sand at an arbitrary position and an arbitrary depth regardless of whether or not there is a structure on the ground. Moreover, since the cover is provided in the sampling port of the earth and sand collector of this invention, only the earth and sand of the point which wants to extract can be extract | collected correctly. Furthermore, since this earth and sand extractor can utilize the apparatus for the conventional propulsion method, it can be used easily and inexpensively.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a sediment collector according to a first embodiment of the present invention.
FIG. 2 is a side view showing a method for using the earth and sand collector of the first embodiment according to the present invention.
FIG. 3 is a cross-sectional view showing a sediment collector according to a second embodiment of the present invention.
[Explanation of symbols]
1 Body 2 Sampling port 3 Piston (lid)
4 O-ring 5 Stopper 6 Connection 7 Pipe 8 Tip 9 Narrow hole 10 Fixing plate (lid)
11 Movable plate (lid)

Claims (3)

A cylindrical main body provided with a sampling port for taking in earth and sand at the tip thereof and capable of storing earth and sand inside,
A lid that can cover the sampling port;
A connecting portion that is provided at the rear end of the main body and connects the main body to the pipe;
Water the lid body, the said collection port are closed by being pressed outwardly in the body by the water pressure is continuously supplied through the pipe when pushing the sampling sites of sediment, was fed through a pipe Once reached the sampling sites soil collector for the collection port open state pulling the inner direction of the body write or is by sucking.   The lid is a piston and a stopper is provided inside the sampling port.When water pressure is supplied through the pipe, the piston is placed in the main body so that it is pressed and fixed to the stopper provided in front of the sampling port. When the water is supplied through the pipe, the piston moves in the rear end direction away from the sampling port and the sampling port is opened. The earth and sand collecting device according to claim 1, wherein At the tip of the pipe that propels a narrow hole formed in the ground, a sand collection port is provided at the tip, a cylindrical main body that can accommodate earth and sand inside, and the inside of the main body is movable in the cylinder axis direction and collected Connecting a sand collector with a lid that can cover the mouth,
While continuing to supply water through the pipe from the ground, and closing the sampling port with the lid energized by the water pressure, the pipe is sent into the narrow hole and the sediment collector is pushed to the sediment collection point,
When the sampling point is reached, the water in the pipe is sucked to stop the urging of the lid by the water pressure and the sampling port is opened, and the pipe is further fed to propel the sediment collector to move the inside of the main body. Sediment collection method to incorporate earth and sand.

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