JP2002333362A - System for measuring surface level of filled substance in casing pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system for measuring a surface level of a filled substance which can correctly and surely measure a top end level of contents filled in a casing pipe when measuring a height level to the contents in the casing pipe. SOLUTION: A distance measuring device 1 is set in a predetermined manner of a position fixing method, or a suspension method or the like mobile method to a top end face of the contents inside the casing pipe 2. Data on the level detected by the distance measuring device is transmitted to a computer 13 of a base machine 3. Measured data is automatically subtracted from the length of the casing pipe through automatic control, and data noises are cut by processing by software or the like manner. The level of the contents is calculated accordingly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

2. Description of the Related Art The disclosed technology relates to a method for substantially improving the filling height of a content in an upper part of a casing pipe filled with contents such as filling sand used for land improvement on land or sea. In the technical field of systems that accurately and efficiently measure various levels in real time.

[0002]

2. Description of the Related Art As is well known, in the construction industry, for example, in the civil engineering and construction technology, it is strictly required to be able to detect further accuracy with high accuracy as in the case of manufacturing general industrial products. It has become to.

[0003] For example, when the level of the filling height of contents such as filling sand in a casing pipe used in ground improvement works such as a sand drain method or a sand compaction method fluctuates over time, the filling method continues. It is necessary to fill or remove the sand, and therefore, the level of the filling height of the contents such as the filling sand inside the casing pipe was measured by a weight or the like,
There is a risk that the level of the top of the filling sand may fluctuate due to adverse conditions such as vibration and rising of the filling sand inside the narrow casing pipe, etc., which makes accurate measurement impossible. was there.

[0004] In order to measure the top level of the contents mechanically, more accurate data is required as the measurement data. A weight is suspended from the upper opening of the pipe via a winch or a wire, and the weight is brought into contact with the top end of the filling sand or the like to detect a height level to the contents. Mechanical means were used.

[0005]

However, in the mode of measuring the level by suspending the weight of the conventional type in a casing pipe, the movement of the wire for suspending the weight is controlled by the selsin. However, there is a problem in that a complicated process of performing numerical conversion by using an electric measuring instrument or the like with a pulse from the rotation angle and measuring by using a pulse from the rotation angle is used.

In the method using the weight, it is impossible to directly confirm the arrival of the weight to the level surface. Therefore, the weight is indirectly changed by a change in the tension of the wire or a limit switch. There was a problem with that uncertainty to confirm.

[0007] Further, when contacting the top end of the contents in the casing pipe via a winch or a wire, a process of lowering the weight must be performed gradually, but the weight of the weight must be reduced. In the descending process, when the casing pipe is affected by the vibration or the vibration of the peripheral device to generate the oscillating vibration, the top end face receives the influence of the oscillating vibration and measures the weight contacting the top end face. There is a disadvantage that the level data at the time becomes unstable, and therefore, there is a disadvantage that the measurement data is accompanied by uncertainty.

[0008]

The object of the invention of this application is to determine the filling amount of the contents to be filled in a casing pipe used for ground improvement, whether on the sea or on the land based on the above-mentioned prior art, by the method of suspending a weight. Points to be technical issues to be resolved,
Using a conventional wave type measuring device such as light wave type, radio wave type, ultrasonic type, etc., set the casing pipe at the optimum position in the optimum position of the casing pipe, or by moving the range finder up and down by the hanging method It is calculated by calculation by a calculation device on the ground, and at that time, the distance measuring device is set at a fixed position with respect to the casing pipe as described above, or it is raised and lowered close to the top end surface of the contents via a winch or cable It can be moved up and down and moved to the optimum position, and the amount of movement of the data transmission cable is replaced by rotation of selcin etc., and the pulse from that rotation angle can accurately measure the level of the contents in the casing pipe according to the measurement distance To provide an excellent system for measuring the level of contents in casing pipes that benefits civil engineering applications in the construction industry A.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the construction of the invention of the present application for filling the inside of a casing pipe used for ground improvement work in order to solve the above-mentioned problems. A system for measuring the level of the filling height of the contents in real time by measurement, wherein the measuring device is a general distance measuring device, which is set at a predetermined position above the contents in the casing pipe and The core is to detect the top level of the contents, and at that time, the distance measuring device is set in a fixed position with respect to the casing pipe to perform the level measurement,
Further, even if the distance measuring device is set in a suspended state with respect to the inside of the casing pipe to perform measurement, even if the level of the content in the casing pipe is in a moving state, Real-time and continuous measurement can be performed by automatic control. The distance measuring device can be set with earthquake resistance and pressure resistance. By means of the soft processing, technical measures were taken to reduce the effects of noises and the like due to deposits on the wall surface in the narrow casing pipe.

[0010]

In the above construction, when the ground improvement such as the soft ground is performed by the sand drain method or the sand compaction method regardless of the land or the sea, a predetermined filling sand or the like is contained in the inside of the casing pipe used for this. When filling and forming sand piles or the like in the ground, when measuring the level of the contents such as filling sand in the casing pipe through a distance measuring device using light waves or the like, the contents are determined to be sandy. The distance measuring device is set in a fixed position relative to the casing pipe without being restrained by paste-like materials such as crushed stone, gravel, concrete and slurry, or suspended via a winch or cable. Or by setting the type of the casing pipe, or by the influence of reflection, vibration, earthquake, etc. on the casing pipe wall surface with the attached matter and the attached matter, or Even in adverse conditions under such soaring dust, by the length measurement of the level the length of the length and content of the casing pipe by automatically the operation, calculated by the computing device via a data cable,
Further, even under a mechanically unfavorable condition such as a closed condition of the casing pipe or oscillating vibration, stable level detection data can be obtained from the measured data by performing known software processing.

In this case, in order to move the distance measuring device to a position where the optimum measurement result can be obtained, the distance is replaced by rotation of selcin or the like by moving the cable, and the distance is calculated from the pulse from the rotation angle. The level of the content can be measured by calculating the distance to the top of the content by the distance measuring device.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The following is a description of embodiments of the present invention as embodiments of the present invention, with reference to the accompanying drawings.

In the embodiment shown in FIGS. 1 and 2, the distance measuring device 1 is of a fixed type or a suspended type with respect to the casing pipe 2, and the set position thereof is fixed or raised / lowered. 2 is a partially enlarged view of FIG. 1. In this embodiment, a leader 5 has a leader top 7 having a predetermined pulley 6 on the top of the base machine 3 via a backstay 4 and a predetermined height. The casing pipe 2 is suspended from the main winding winch 8 of the base machine 3 via a wire 9, the wire 9 via a vibro hammer 10.

Thus, the distance measuring device 1 of the wave type, which is the center of the gist of the invention of this application, such as the light wave type, the radio wave type, the ultrasonic type, etc., is connected to the base machine by a cable 11 for data transmission. 3 is linked to a computing device 13 in the cockpit 12.

The detection data is transmitted to the calculation device 13 so that a predetermined level can be calculated.

In FIG. 2, the filling sand 14 as a content is introduced into the casing pipe 2 from the introduction port 2 'juxtaposed to the vibro-hammer 10 provided on the upper part thereof, and the sand 14 is fed to the top end face 14'. , measuring the distance 1 detects the level L ₁ to the top panel end face 14 ', such as (laser range-level meter LD90-3 series RIEGL Inc.), the data is transmitted to the computing device 13, known in advance Height up to the measured distance 1, ie the casing pipe 2
(L ₂ −L ₁ ) by inputting the height L ₂ of
To measure the level of the middle sand 14 as the content of L.

[0017] And the embodiment, the distance measuring device 1 to the casing pipe 2, its height L ₁ from the top end face 14 'is the elevating aspect or suspended expressions that are positioned fixedly set Therefore, even after the distance measuring device 1 is set, there is no problem in inserting the contents 14 from the upper inlet 2 '.

The contents 14 may be not only sand, crushed stone, gravel, concrete, but also paste-like contents such as a slurry. It is done without.

In the above-described structure, the casing pipe 2 is moved up and down via the wire 9 by rotating the winch 8 of the base machine 3 forward or backward, so that the contents 14 are successively placed in the casing pipe or the ground (not shown). Filling (although in the filling process, compressed air for filling may be supplied from the upper part of the casing pipe 2).

The distance measuring device 1 is operated at a desired or arbitrary position using the distance measuring device ₁ to measure the height L ₁ of the contents 14 up to the top end surface 14 ′, as described above. , L of the contents 14 is calculated by the calculation device 13 by setting (L ₂ −L ₁ ) to L ₂ from the length (height) of the casing pipe 2 previously input to the calculation device 13, Can be calculated.

In this case, the calculation device 13 performs calculations continuously, and can measure L of the contents in real time by a kind of automatic control.

In addition, even if there is oscillating vibration or the like due to the base machine 3 or the vicinity thereof, accurate and smooth measurement data required by a known software process previously input by the computing device 13 as a kind of noise signal. Can be obtained.

In the embodiment shown in FIGS. 3 and 4, the distance measuring device 1 is connected to the computing device 13 in a data transmission cable hanging type and the data transmission cable winding type. This is a mode linked to the winch 17.

In this embodiment, as in the above embodiment,
Since the distance measuring device 1 can be moved up and down with respect to the casing pipe 3, the top end surface 14 'of the contents 14 rises above the upper surface thereof with dust and the like from the top end surface 14' soaring to increase the density. Even if the environmental condition of the measurement is poor, the data transmission cable 11 for the distance measuring device is appropriately raised and lowered by the transmission cable winch 17 and stopped at the optimum position, There is an advantage that measurement data can be stably obtained because measurement can be performed.

It should be noted that the embodiment of the present invention is not limited to the above-described embodiment. For example, the distance measuring device 1 is of a movable type, such as a rack, a pin-on type motor, or the like, and is of an elevation type. Various modes can be adopted.

When the distance measuring device 1 is set and installed at an appropriate position regardless of whether it is the fixed type, the elevating type, or the mobile type in each of the above embodiments, the distance measuring device 1 should be of an earthquake-resistant and pressure-resistant type. Thereby, it is possible to provide a system that enables measurement without being affected by the earthquake resistance and pressure resistance of the distance measuring device 1.

[0027]

As described above, according to the invention of this application, regardless of whether it is on land or land, when measuring the level of the content to be filled into the casing pipe used for ground improvement, the conventional weight Unlike the hanging method of the conventional, fixed type distance measuring devices such as light wave type, radio wave type, ultrasonic type, etc.
Or, because it can be set in a casing pipe using a lifting type, a moving type, and a hanging type,
In the case of the hanging type, the set position can be freely determined, and there is an effect that continuous level measurement can be easily performed at a free set position by automatic control with respect to the set position. As described above, there is no uncertainty of indirectly confirming the arrival of the weight to the top end surface, and there is no need for complicated software processing for automation. is there.

Therefore, there is an advantage that the capacity of the construction is improved.

For this reason, from the above-mentioned merit, there is an excellent effect that the timing for charging the contents such as the filling sand can be omitted.

Further, since the distance between the distance measuring device and the top end surface of the contents can be freely set, measurement can be performed even under bad conditions in which dust or the like is slightly generated from the top end surface. There are advantages.

[Brief description of the drawings]

FIG. 1 shows an embodiment in which a distance measuring device is fixed at a set position with respect to a casing pipe.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a view showing a mode in which the distance measuring device can be lifted and lowered in a hanging manner in a casing pipe.

FIG. 4 is an enlarged view of a main part of FIG. 3;

[Explanation of symbols]

 2 Casing pipe 14 Contents L level 14 'Top end face 1 Distance measuring instrument

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takuya Kaizu 119 Ito-cho, Chuo-ku, Kobe, Hyogo Japan Inside Nippon Kaiko Co., Ltd. (72) Inventor Kozo Iwata 119 Ito-cho, Chuo-ku, Kobe, Hyogo (72) Inventor Koichi Sato 119 Ito-cho, Chuo-ku, Kobe-shi, Hyogo Nippon Kaikko Co., Ltd.F-term (reference)

Claims (7)

[Claims] In a system for measuring the level of the filling height of contents filled in a casing pipe used for ground improvement work with a measuring device in real time, the measuring device is a general ordinary distance measuring device. A level measuring system for filling the inside of the casing pipe, wherein the top level of the contents is detected by being set in a predetermined manner above the contents inside the casing pipe. 2. The level measuring system according to claim 1, wherein said distance measuring device is set in a fixed position with respect to said casing pipe to perform level measurement. 3. The system according to claim 1, wherein said distance measuring device is set in a suspended state with respect to the inside of said casing pipe to perform measurement. . 4. The casing pipe according to claim 1, wherein even if the level of the contents in the casing pipe is moving, the level can be measured in real time and continuously by automatic control. Fill level measurement system. 5. The level measuring system according to claim 1, wherein said distance measuring device is set with earthquake resistance and pressure resistance. 6. The system for measuring the level of filling in a casing pipe according to claim 1, wherein said distance measurement data is processed by software. 7. The level measuring system according to claim 3, wherein said suspended distance measuring device is capable of moving vertically.