JP2022115265A - Cycle time management system of hole drilling or improvement body construction - Google Patents

Abstract

To provide a cycle time management system of drilling hole or improvement body construction which can manage cycle time of drilling hole or improvement body construction in drilling hole or improvement body construction in real time.SOLUTION: A cycle time management system of drilling hole or improvement body construction manages cycle time of a construction of an improvement body A by a multiple-shaft auger 5 which is connected with a reduction gear 4 suspended by a hanging wire 7 to ascend/descend and which ascends/descends with the reduction gear 4. The cycle time management system comprises: ascending/descending distance measurement means 8 for measuring an ascending/descending distance of the reduction gear 4 in the construction of the improvement body A; ascending/descending time measurement means 9 for measuring an ascending/descending time of the reduction gear 4; ascending/descending speed calculation means 10 for calculating an ascending/descending speed of the reduction gear 4 from the ascending/descending distance and the ascending/descending time of the reduction gear 4; and display means 11 for graphically displaying a relation among the ascending/descending distance, the ascending/descending time, and the ascending/descending speed of the reduction gear 4. The ascending/descending distance measurement means 8 measures the ascending/descending distance of the reduction gear 4 from a sent length of the hanging wire 7 of the auger 5.SELECTED DRAWING: Figure 1

Description

The present invention is connected to a reduction gear (motor) that is vertically installed on a suspension wire of a pile driver and moves up and down, and is drilled by a single-axis or multi-axis auger that moves up and down together with the reduction gear. Concerning the cycle time management system for drilling holes or improving structures to manage the construction cycle time of improved structures, confirm and manage the construction status in real time, such as whether pile holes or improved structures are being constructed within the control values. It was made possible.

For example, in the deep mixing method, a uniaxial or multiaxial auger is connected to a speed reducer (motor) installed on the leader of a three-point pile driver, and solidifying material such as cement slurry is discharged from the tip of the auger. By repeating drilling and mixing and stirring, it is generally used as a ground improvement method to create a columnar improvement body consisting of drilling soil and solidification material in the ground, or a continuous underground wall such as a water impermeable wall in which the columnar improvement body is continuous. Are known.

In addition, the pre-boring method is a method of excavating a pile hole while injecting a drilling fluid (preventing the collapse of the hole wall) with an earth auger or the like in advance, and then erecting a ready-made pile into the pile hole. It is generally known as a construction method of

These construction methods are usually carried out in parallel with drilling with an auger or stirring and mixing, while controlling the construction status, such as whether drilling with an auger or creation of an improved body is performed within a control value.

As a technology related to this, for example, Patent Document 1 discloses a construction management device in a mixed treatment method in which a stabilizer is added to soft ground and mixed and stirred to improve the strength of the ground.

Briefly, a stirring shaft provided with a stirring blade mainly near the tip is penetrated into the ground while rotating, and the stabilizer is discharged near the stirring blade, and the stabilizer is rotated by the rotation of the stirring blade. and the earth and sand in the ground are mixed and solidified, wherein means for detecting the discharge amount of the stabilizer, means for detecting the shaft rotation speed of the stirring shaft, and the current construction depth means for obtaining the lifting speed from the construction time, determination means for sequentially determining whether or not the detection value of each detection means is within the upper limit and the lower limit of the reference value set in advance in the depth direction, and each determination result If the standard value is not satisfied, an alarm is output according to each case, and if the standard value is satisfied, the alarm is canceled. It is provided with determination means for determining whether or not the threshold has been reached, and alarm generating means for outputting an alarm only when the determination result is satisfied.

Patent No. 2789219 patent gazette JP-A-2000-220134 JP-A-2003-155741

However, conventionally, the management of the construction status of drilling or construction of an improved body is performed by a heavy equipment operator who operates an auger simply by measuring the depth of the auger and the time to reach the depth at each predetermined depth. Therefore, it is difficult to accurately judge the construction status, such as whether the drilling or the construction of an improved body is being carried out within the control values, and there is no substantial management. rice field.

In addition, the recording of the depth of the auger and the time to reach the depth must be manually performed by the heavy machinery operator during operation of the heavy machinery, which is very troublesome. In addition, the construction management device disclosed in Patent Document 1 has a number of various means, and the device is very complicated, and the operation is troublesome and expensive.

The present invention has been made to solve the above-mentioned problems. An object of the present invention is to provide an improved construction cycle time management system.

The present invention relates to a drilling or improved body preparation cycle time management system for managing the drilling or improved body preparation cycle time during drilling or improved body preparation by a single or multi-screw auger, the system comprising: Lifting distance measuring means for measuring the lifting distance of the speed reducer at the time of forming the hole or the improved body; lifting time measuring means for measuring the lifting time of the speed reducer; and a display means for graphing and displaying the relationship between the lifting distance, the lifting time, and the lifting speed of the speed reducer.

The lifting distance of the speed reducer during drilling by the auger or construction of the improved body can be measured by measuring the feed length of the suspension wire of the auger by the lifting distance measuring means. It is possible to indirectly and continuously measure the depth of formation of a hole or refinement.

In addition, measurement data can be visualized by visualizing it (graphing) and shared using communication equipment such as a cloud server. With regard to, etc., all the people involved in the construction can check the construction status in real time using a terminal dedicated to remote monitoring, even from a remote location.

In addition, by providing a server for accumulating measured data measured by the ascending/descending distance measuring means and ascending/descending time measuring means, and an analyzing means and means for analyzing the measured data, the measured data is accumulated in the server, etc. It is also possible to derive the optimum construction speed of the improved body by analyzing the cause of construction failure and adjusting the rotation speed and penetration speed of the auger.

In addition, the measurement data can be converted into a database and stored in the construction management system, and construction records can be created automatically to construct the database.

As the ascending/descending distance measuring means, a distance sensor having a laser rangefinder and a target receiving a laser beam emitted from the laser rangefinder can be used.

In this case, a laser rangefinder is installed on one side of a speed reducer or a base machine equipped with a speed reducer, and a target on the other. The distance between the speed reducer and the base machine, that is, the depth of the auger, can be derived indirectly from the time it takes for the target to reflect and return to the laser rangefinder.

The present invention is a reduction gear from the lifting distance and lifting time of the reduction gear during drilling by a single-axis or multi-shaft auger that is vertically installed on the hanging wire of the pile driver and moves up and down together with the reduction gear that moves up and down, or when creating an improved body. The lifting speed is calculated, and the relationship between the lifting distance, lifting time, and lifting speed of the speed reducer is graphed as a relationship between the drilling depth, the preparation time, and the preparation speed of the improved body by the auger. By comparing with the control value, it is possible to confirm and manage the construction status such as whether the drilling by auger or the construction of the improvement body is carried out within the control value. can be constructed.

It is a side view of a soil improvement device equipped with an improved body construction cycle time management system. Figure (a) is a front view showing the method of creating an improved body using a triaxial auger, and Figure (b) shows the depth of auger improvement and improvement during the creation of an improved body. It is explanatory drawing which graph-ized the relationship between time and improvement speed. It is the table|surface which recorded the improvement depth and improvement time of the auger at the time of building an improved body with a triaxial auger.

FIGS. 1 to 3 illustrate a ground improvement apparatus equipped with an improved body creation cycle time management system for managing the improved body creation cycle time when creating an improved body in ground improvement work.

In the figure, a leader 2 and a plurality of stays 3 that support the leader 2 are installed on a base machine 1 of a pile driver. A type auger 5 is installed.

The speed reducer 4 is sent out from a winch 6 mounted on the base machine 1 and suspended from the tip of a suspension wire 7 extending vertically from the upper end of the leader 2 along the side surface of the leader 1 .

The speed reducer 4 is guided by the leader 2 and moves up and down by changing the feed length of the suspension wire 7 fed from the winch 6 by operating the winch 6 .

The auger 5 is mounted below the speed reducer 4 along the leader 2 and connected to the speed reducer 4 at its upper end. The auger 5 rotates with the speed reducer 4 as a power source, and at the same time, the suspending wire 7 sent out from the winch 6 changes its length, so that the auger 5 is guided by the leader 2 together with the speed reducer 4 and ascends and descends.

As a result, the drilling and drilling soil and the solidified material discharged from the tip of the auger 5 are agitated and mixed to create a columnar improved body A having a constant width and a constant thickness, and the cycle of creating this improved body is completed. A diaphragm wall such as a water impermeable wall is created by repeating and continuously performing this process in the width direction of the columnar improved body A.

Reference numeral 8 denotes a lifting distance measuring means for measuring the lifting distance of the speed reducer 4 at the time of building the improved body A by the auger 5. , the lifting distance of the speed reducer 4, that is, the depth of the improved structure formed by the auger 5 moving up and down together with the speed reducer 4 can be indirectly and continuously measured.

Reference numeral 9 denotes a lifting time measuring means for measuring the lifting time of the speed reducer 4. At the same time when the lifting distance measuring means 8 measures the lifting distance of the speed reducer 4, the lifting time of the speed reducer 4, that is, the auger 5 It is designed to automatically and continuously measure the lifting time of the

Reference numeral 10 denotes speed calculation means for calculating the lifting speed of the speed reducer 4 from the lifting distance and the lifting time of the speed reducer 4, that is, the lifting speed of the auger 5. The lifting distance measuring means 8 and the lifting time measuring means 9 At the same time as measuring the lifting distance and lifting time of the reduction gear 4, the lifting speed of the reduction gear 4, that is, the lifting speed of the auger 5 is automatically and continuously calculated.

Reference numeral 11 denotes a display means for graphically displaying the relationship between the lifting distance, the lifting time, and the lifting speed of the speed reducer 4, that is, the depth of the auger 5, the lifting time, and the lifting speed. The data are graphed and displayed continuously on the display means 11 (see FIG. 2(b)).

The graph of FIG. 2(b) is a graph showing one cycle of building an improved structure, and point (1) is the point where the auger 5 is positioned on the ground surface and the depth is 0 m. Point (2) is the point where the auger 5 descends together with the speed reducer 4 and the formation of the improved body reaches the design drilling depth. Point (3) is a point at a depth of 0 m where the auger 5 rises together with the speed reducer 4 and one cycle of formation of the improved structure is completed. The solid line is the measured value, and the one-dot chain line is the controlled value.

In addition, the table in FIG. 3 records the improvement depth and improvement time of the auger when the improved body was created by the triaxial auger.

With such a configuration, the heavy equipment operator can confirm on the display means 11 whether or not the construction of the improved body A by the auger 5 is performed within the control values input in advance (Fig. 2(b)). ), and the rotation speed and lifting speed of the auger 5 can be adjusted as necessary.

In addition, other workers involved in the construction work can also check the status using a dedicated terminal for remote monitoring while staying at a remote location. In addition, construction status can be converted into data and backed up.

In addition, by providing a server (not shown) that accumulates measurement data measured by the lifting distance measuring means 8 and the lifting time measuring means 9, and an analysis means and analysis means (not shown) that analyzes and analyzes the measurement data, By accumulating measurement data in a server and analyzing it to analyze the causes of construction failures, etc., it is also possible to derive the optimum construction speed for the improved structure by adjusting the rotation speed and penetration speed of the auger.

A distance sensor (not shown) may be used as the lifting distance measuring means 8 for measuring the lifting distance of the speed reducer 4 when the improved body A is constructed.

The distance sensor is installed on a speed reducer 4 that moves up and down while being guided by the reader 2, and irradiates a laser beam toward a target set on the base machine 1 to derive the distance from the speed reducer 4 to the base machine 1. It has a rangefinder.

According to the laser rangefinder, the distance from the speed reducer 4 to the base machine 1, that is, the depth of the auger 5, is calculated from the time from when the laser beam emitted from the laser rangefinder hits the target and is reflected until it returns to the laser rangefinder. can be derived indirectly and continuously.

Incidentally, the drilling cycle time management system for drilling by the auger 5 at the time of construction of prefabricated piles is configured in substantially the same manner.

The present invention enables all concerned parties to shorten the drilling or improvement body construction cycle time by means of a single-axis or multi-axis auger connected to a speed reducer that is vertically attached to the suspension wire of a pile driver and is guided by a leader to raise and lower. It can be managed and checked in real time.

1 base machine 2 leader 3 stay 4 reducer 5 auger (single or multi-axis auger)
6 Winch 7 Hanging wire 8 Lifting distance measuring means 9 Lifting time measuring means 10 Lifting speed calculation means 11 Display means

Claims (4)

A hole drilling or improved body preparation cycle time management system for managing the drilling or improved body preparation cycle time by a single-axis or multi-shaft auger, wherein the reduction gear is raised and lowered during the drilling of the auger or the improved body preparation Lifting distance measuring means for measuring distance; lifting time measuring means for measuring lifting time of the speed reducer; speed calculating means for calculating lifting speed of the speed reducer from lifting distance and speed time of the speed reducer; A cycle time management system for drilling or improving a body, characterized by comprising display means for graphically displaying the relationship among the lifting distance, lifting time, and lifting speed of the speed reducer. 2. A cycle time management system for drilling holes or forming an improved body according to claim 1, wherein the lifting distance measuring means is configured to measure the lifting distance of the speed reducer from the feed length of the suspension wire of the auger. A drilling or improvement body preparation cycle time management system characterized by: 2. The system for drilling a hole or creating an improved body according to claim 1, wherein a distance sensor having a laser rangefinder and a target receiving a laser beam emitted from the laser rangefinder is installed as the ascending/descending distance measuring means. A drilling or improvement body preparation cycle time management system characterized by: A server for accumulating measurement data measured by said ascending/descending distance measuring means and said ascending/descending time measuring means, and said measurement data A cycle time management system for drilling or forming a modified body, characterized by comprising analysis means for analyzing and analysis means.

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