JP2023084810A - Individual process determination system and individual process determination method - Google Patents

Abstract

To solve the problems of a conventional technique, that is, to provide an individual processing determination system capable of easily and highly accurately determining an individual process as compared with the conventional technique and automatically acquiring a cycle time by calculating a working time of the process, and an individual determination method.SOLUTION: An individual process determination system is a system for selecting one individual process from among a plurality of different individual processes performed in tunnel excavation on the basis of a power supply operation of an electrical apparatus provided in a construction machine. The system comprises trigger signal receiving means and selecting means. The trigger signal receiving means is mounted on the construction machine used in the individual process, and receives a "trigger signal" related to a power supply operation of the electrical apparatus. The selecting means selects the individual process on the basis of the trigger signal received by the trigger signal receiving means.SELECTED DRAWING: Figure 3

Description

TECHNICAL FIELD The present invention relates to a technology for determining the type of work to be performed in tunnel excavation, and more specifically, an individual process capable of grasping the type of work being performed based on the power supply operation of electrical equipment provided in construction machinery. It relates to a judgment system and an individual process judgment method.

It is said that about two-thirds of Japan's land area is mountainous, and therefore roads and railroad tracks (hereinafter referred to as "roads, etc.") almost always have sections that pass through mountainous areas. In order to construct a road or the like in this mountainous area, it is common to adopt either a cutting method for excavating a part of the slope or a tunneling method for hollowing out the inside of the natural ground. The tunnel construction method tends to have a higher unit construction cost (construction cost per extension of the road, etc.) than the cutting method, but the amount of excavated soil (that is, the amount of excavated soil) tends to be smaller than that of the cutting method. In addition, it is characterized by a high degree of freedom in linear planning of roads, etc. (for example, shortcuts can be made), and it is said that more than 10,000 tunnels have been constructed in Japan so far.

Until the 1970s, the mainstream method of constructing mountain tunnels was the sheet pile construction method, in which steel arch supports were combined with wooden sheet piles to support the ground. (New Austrian Tunneling Method) is the mainstream. The main feature of NATM is the design concept that expects the strength (arch effect) of the natural ground, so compared to the conventional sheet pile construction method, the scale of the tunnel support can be reduced and the construction speed is increased. Construction costs can be reduced.

In addition, since NATM was fully implemented in Japan, drilling technology has progressed dramatically, and various auxiliary construction methods have been developed, making it possible to deal with various rocks. Advances in excavating machinery (particularly free-section excavators) have made mechanical excavation an option in addition to blast excavation. Although this mechanical excavation depends on the excavation cross-sectional area and alignment, it is generally used for rocks with relatively low strength (for example, unconfined compressive strength of 49 N/mm ² or less). Blasting excavation is often adopted when bedrock exists in the target ground.

The excavation procedure by NATM will be briefly described here. First, the tunnel face is excavated. In the case of blasting excavation, a drill jumbo is used to drill a hole and load gunpowder (dynamite), the workers and the drill jumbo are evacuated, and then blasting is performed. Cut the face. The excavation progress length (one span length) for one cycle (one cycle) varies depending on the support pattern set according to the strength of the ground, but in general excavation is carried out with a span length of 1.0 to 2.0m. will be After excavation of one span length, the muck is carried out by a dump truck (or rail construction method) while performing "scraping" to shake off the unstable ground portion (floating rock, etc.). Then, after removing the muck, perform mirror spraying and primary concrete spraying, erect steel shoring if necessary (depending on the support pattern), perform secondary concrete spraying, and then place rock bolts. I do. The primary concrete spraying work, secondary concrete spraying work, and rock bolting work are performed for the length of the excavated span, that is, the inner peripheral surface of the tunnel (surrounding surface from the side wall to the top) of the bare excavation part. will be

In this way, NATM consists of a series of processes such as rock drilling (for example, face drilling to blasting), scraping, steel shoring erection, concrete spraying, and rock bolting (hereafter referred to as "individual processes" for convenience). ) is repeated to excavate one span (1.0 to 2.0m) at a time. The flow of these series of individual processes is called the "excavation cycle", and the time table representing one excavation cycle is called the "cycle time". is a path. Therefore, it is extremely important to understand the work time required for these individual processes and analyze the cycle time for the efficiency of tunnel excavation. In other words, by analyzing the cycle time, it is possible to grasp unreasonableness and waste in tunnel excavation, and as a result, it becomes possible to perform appropriate cost control and process control based on actual results. Therefore, cycle time studies are being conducted at many tunneling sites.

Conventionally, when conducting cycle time surveys, in other words, when measuring the construction time for each individual process (rock drilling, scraping, steel shoring erection, concrete spraying, rock bolting), it is necessary to be in the vicinity of the tunnel face. While visually observing, the investigator measured the time with a stopwatch or the like and recorded it in a field notebook or the like. It is common to assign construction managers and excavation workers (so-called miners) to be in charge of this investigation, but it is required to perform other duties and work concurrently, and data may not be obtained or may be incorrectly obtained. As a result, it was necessary to check and correct the problem, and the labor involved was a considerable burden.

Therefore, it is conceivable to automatically obtain the cycle time without placing an investigator at the tunnel face. For example, if an IC tag (RFID or the like) is attached to heavy machinery and log information is acquired from the IC tag, the cycle time can be automatically acquired. However, with the method of using IC tags in this way, it is necessary to install new equipment for the heavy machinery that is actually in operation. It is not easy in terms of installation cost and maintenance.

Also, as a method for automatically acquiring the cycle time, it is conceivable to use an image. In other words, by automatically recognizing the video and images of the tunnel face, it is possible to grasp the work status (by individual process) at the tunnel face, and to grasp the time required for the work based on the shooting time. . Machine learning such as deep learning can be used for automatic recognition of tunnel face images, but with the current level of technology, it is not possible to correctly recognize variations in the position and size of construction machines, etc. within the image. As a result, there was a problem that the cycle time could not be obtained accurately.

In addition, it is conceivable to automatically acquire the cycle time based on the operation status of the construction machinery used in each individual process. For example, Patent Literature 1 proposes a technique for grasping the operation history of a construction machine (for example, a tire roller) based on the number of engine revolutions, although it does not acquire the tunnel excavation cycle time.

JP 2021-56938 A

The technique disclosed in Patent Document 1 assumes that the tire roller is operating when the engine speed exceeds a threshold, and sets the continuous time over which the threshold is exceeded as the operating time of the tire roller. In other words, the accuracy of the operating time to be estimated largely depends on the threshold set in advance. In other words, the correct operating time cannot be obtained unless the threshold is appropriately set. Further, when the technique of Patent Document 1 is applied to obtain cycle time in tunnel excavation, different construction machines are used for each individual process, and therefore it is required to set an appropriate threshold for each construction machine. However, it is more difficult to set appropriate thresholds for multiple types of construction machinery. Very Hard to think. Furthermore, it is not uncommon for construction machinery in tunnel excavation to repeatedly operate and stop even during work. Inconvenience of recognizing the time may also occur.

An object of the present invention is to solve the problems of the prior art, that is, by determining an individual process (type of work) more easily and accurately than the prior art and obtaining the working time of that process, An object of the present invention is to provide an individual process determination system and an individual process determination method that enable automatic acquisition of cycle time.

The invention of the present application has been made with a focus on judging the work type of individual processes based on the operation of the power supply of the electric equipment provided in the construction machine, and is an invention made based on an unprecedented idea. be.

The individual process determination system of the present invention is a system that selects one individual process from a plurality of different individual processes performed in tunnel excavation based on the power supply operation of electrical equipment provided in the construction machine, and includes trigger signal receiving means. and selection means. Among them, the trigger signal receiving means is mounted on the construction machine used in the individual process, and receives a "trigger signal" relating to the power supply operation of the electrical equipment. The selecting means selects the individual process based on the trigger signal received by the trigger signal receiving means. The trigger signal receiving means receives a "start trigger signal" when a predetermined "specific electrical device" among the electrical devices provided in the construction machine is powered on, and the power source of the specific electrical device is turned on. Receiving (detecting) a "stop trigger signal" when released. Then, the selecting means selects the individual process based on the construction machine related to the trigger signal receiving means that has received the trigger signal, and furthermore, the working time of the individual process based on the reception time of the start trigger signal and the reception time of the stop trigger signal. Calculate Accordingly, it can be determined that the individual process selected by the selecting means is the individual process currently being performed at the tunnel face.

The individual process determination system of the present invention may further include a communication device installed inside the tunnel. This communication device transmits the trigger signal received by the trigger signal receiving means to the selecting means. In this case, the selection means is located outside the tunnel and selects the individual process on the basis of the received trigger signal.

The individual process determination system of the present invention can also select an individual process based on the states of two or more specific electrical devices set for the same construction machine. In this case, the construction machine is equipped with trigger signal receiving means for receiving the trigger signal of each specific electrical device. Further, the selecting means in this case sets the specific electrical equipment related to the trigger signal receiving means to be in an "operating state" from the time when the trigger signal receiving means receives the start trigger signal until the time when the stop trigger signal is received, and when the stop trigger signal is received. This specific electrical device is set in a "dormant state" from the reception until the activation trigger signal is received. Then, the selecting means selects an individual process based on a combination of operating states and resting states relating to two or more types of specific electrical equipment.

The individual process determination system of the present invention can also calculate the work time by subtracting the "correction time" from the "use time". The use time is the time from the time when the start trigger signal is received until the time when the stop trigger signal is received, while the correction time is the time including preparations and movements preset for each individual process.

The individual process determination system of the present invention may further include process display control means. This process display control means causes the process display means installed at the tunnel entrance to display the individual process, and displays the individual process selected by the selecting means as the individual process currently being performed at the face. be.

The individual process determination system of the present invention may further include facility control means. This facility control means adjusts the output of the blower that sends air to the windpipe in the tunnel and the dust collector installed in the tunnel, according to the individual process selected by the selection means.

The individual process determination method of the present invention is a method of selecting an individual process using the individual process determination system of the present invention, and is a method comprising a trigger signal receiving process and a selecting process. Among these, in the trigger signal receiving step, the trigger signal receiving means mounted on the construction machine receives the trigger signal (start trigger signal and stop trigger signal) of the electrical equipment of the specific electrical equipment. In the selection step, an individual process is selected based on the construction machine related to the trigger signal receiving means that has received the trigger signal, and the working time of the individual process is selected based on the reception time of the start trigger signal and the reception time of the stop trigger signal. Calculate

The individual process determination system and the individual process determination method of the present invention have the following effects.
(1) Cycle time can be acquired at any time even in a two-shift system of day and night without stationing a cycle time inspector at the tunnel face all the time.
(2) The cycle time can be grasped only by acquiring the ON/OFF (on/off) signal of the power supply of the electrical equipment, that is, it can be realized easily and at low cost without preparing a large-scale device or the like. be able to.
(3) Since it is possible to determine the individual process being carried out, it is possible to adjust the output of each facility according to the individual process. For example, it is possible to adjust the output of the blower so as to send the required air volume to the individual process, or adjust the output of the dust collector according to the individual process. Overall construction costs can be reduced.
(4) By displaying the individual process currently being performed on the process display means, it is possible to guide people other than related parties such as visitors, and workers waiting in the suburbs of the tunnel can make appropriate preparations for the next process. It can be carried out.

A model diagram schematically showing the relationship between individual processes, machines used, and specific electrical equipment. A model diagram showing an example of individual processes performed in tunnel excavation, machines used in each individual process, and specific electrical equipment set in the machines used. 1 is a block diagram showing the main configuration of an individual process determination system of the present invention; FIG. A model diagram schematically showing the relationship between usage time, correction time, and work time. The flowchart which shows the flow of the main processes of the individual process determination system of this invention. (a) is a model diagram schematically showing the "operating state" and "resting state" of the specific electrical equipment, and (b) is a model diagram showing that individual fixing is selected according to the combination of the operating state and the resting state. model diagram shown. FIG. 4 is a model diagram schematically showing that individual processes are selected according to combinations of trigger signals of different machines used; The flowchart which shows the main processes of the individual process determination method of this invention.

An embodiment of the individual process determination system and the individual process determination method of the present invention will be described with reference to the drawings.

1. Overall Outline The present invention focuses on the fact that different types of construction machinery are used for each "individual process" such as face excavation, shear removal, steel shoring erection, concrete spraying, and rock bolting. This invention was made by paying attention to the power supply operation of the electrical equipment provided in the construction machine. A construction machine may be provided with a plurality of types of electrical equipment, and the electrical equipment to which attention should be paid is set in advance. For the sake of convenience, the electrical equipment to be focused on is specifically referred to as "specific electrical equipment", and the construction machinery used in individual processes is referred to as "used machinery".

FIG. 1 is a model diagram schematically showing the relationship between individual processes, machines used, and specific electrical equipment. This figure shows three individual processes (individual processes 01 to 03). For example, in the individual process 01, a used machine A is used. It is The machine A is equipped with a trigger signal receiving means A for receiving a signal (hereinafter referred to as a "trigger signal") when the specific electrical equipment A is operated. More specifically, the trigger signal receiving means A connected to the specific electrical device A receives a trigger signal (hereinafter particularly referred to as "activation trigger signal") when the power of the specific electrical device A is turned on. , the timing at which the power ON of the specific electrical equipment A is released, that is, the state in which the power is switched from ON to OFF is detected. Information detected by the trigger signal receiving means at the timing when the specific electrical device is turned off (turned off) is particularly referred to as a "stop trigger signal". For convenience, sensing the signal is referred to herein as "receiving" the stop trigger signal.

In the individual process 01, one specific electric device A is set for the machine A to be used, but this is not limiting, and two or more types of specific electric devices can be set for one machine to be used. For example, in the individual process 02, the used machine B is used, and among the electric equipment provided in this used machine B, the specific electric equipment B1 and the specific electric equipment B2 are set. The machine B is equipped with a trigger signal receiving means B1 for receiving a trigger signal from the specific electrical equipment B1 and a trigger signal receiving means B2 for receiving a trigger signal from the specific electrical equipment B2.

In the individual process 01 and individual process 02, one machine (used machine A and used machine B) is used in one individual process, but two or more types of machines are used depending on the work type of the individual process. Sometimes. In this case, it is preferable to set the specific electrical equipment for each machine used. For example, in the individual process 03, use machine C and use machine D are used, specific electric equipment C is set among the electric equipment provided in use machine C, Device D is set. Machine C is equipped with trigger signal receiving means C for receiving a trigger signal from specific electrical equipment C, and machine D is equipped with trigger signal receiving means D for receiving a trigger signal from specific electrical equipment D. there is

Thus, one trigger signal receiving means is connected to one specific electrical device. Therefore, if the trigger signal receiving means can be specified, the specific electrical device can be specified, that is, the machine in use provided with the specific electrical device can be specified. It is possible to judge the process. In order to specify the trigger signal receiving means, an identifier (ID: IDentification) that can be distinguished from other trigger signal receiving means may be given in advance to the trigger signal receiving means, and the trigger signal combined with this identifier may be handled. The trigger signal receiving means is in a state of being able to receive an ON/OFF (on/off) trigger signal by a relay on the side of the specific electrical equipment, such as being connected to an electric cord related to power supply operation of the specific electrical equipment. In this case, since the trigger signal is an analog signal, the trigger signal receiving means converts it into a digital signal (A/D conversion). At this time, the identifier of the trigger signal receiving means is added to the digital signal. do it.

As described above, the trigger signal receiving means receives the start trigger signal and the stop trigger signal as trigger signals. Therefore, by using the start trigger signal and the stop trigger signal, it is possible to estimate the operating time of the specific electrical equipment, that is, it is possible to estimate the operating time of the machine in which the specific electrical equipment is installed. As a result, it is possible to estimate the time (hereinafter referred to as "working time") during which the individual process related to the machine used is performed. That is, by using the trigger signal received by the trigger signal receiving means, it is possible to determine the individual process being executed (or executed) at the tunnel face, and to estimate the working time of the individual process. That's why.

FIG. 2 is a model diagram showing an example of individual processes performed in tunnel excavation, machines used in each individual process, and specific electrical equipment set in the machines used. In the example of this figure, the individual processes are "face excavation", "slip removal", "primary concrete spraying", "steel support installation", "secondary concrete spraying", and "rock bolting". The excavation cycle is made up of a combination of In the case of face excavation, in the case of mechanical excavation, a "twin header (free cross section excavator)" is used as the machine, and its "headlight" is set as a specified electrical equipment, and in the case of blast excavation, a "drill jumbo" is used. is used as a machine, and its "hydraulic pump" is set as a specific electrical device. In addition, in the muck removal, a "side dump" for loading muck is set as a machine to be used, and its "headlight" is set as a specific electrical equipment. That is, for the face excavation and shear removal shown in this figure, the machines and specific electrical equipment used are set according to the pattern of "individual process 01" shown in FIG.

In addition, for the primary concrete spraying, steel shoring erection, and secondary concrete spraying, a "concrete spraying machine (with an erector)" is used, along with its "compressor" and "hydraulic pump." is set as a specific electrical device. The compressor of the concrete spraying machine is used when spraying concrete, and the hydraulic pump on one side is used when spraying concrete (moving the boom) and when erecting steel shoring (moving the erector). used. That is, for the primary concrete spraying, steel shoring erection, and secondary concrete spraying shown in this figure, the machines and specific electrical equipment used are set according to the pattern of "individual process 02" shown in FIG. Of course, not limited to this example, only the "compressor" can be set as the specified electrical equipment for the primary concrete shot and the secondary concrete shot, and only the "hydraulic pump" can be set as the specified electrical equipment for the steel shoring installation. can also

Furthermore, in rock bolting, the "drill jumbo" and the "mortar injection pump" are used as machines, and the "hydraulic pump" for the drill jumbo is set as a specific electric device, and the mortar injection pump In addition, the "electric motor" is set as the specified electrical equipment. The drill jumbo in rock bolt driving is used for drilling holes for rock bolts and for inserting rock bolts, while the mortar injection pump is used for injecting mortar into rock bolt holes. That is, in the rock bolt driving shown in this figure, the machine used and the specific electrical equipment are set according to the pattern of "individual process 03" shown in FIG. Of course, it is not limited to this example, and in rock bolt driving, only the "drill jumbo" can be set as the machine to be used, and its "hydraulic pump" can be set as the specific electric equipment.

2. Individual Process Judgment System Next, the individual process judgment system of the present invention will be described in detail. The individual process determination method of the present invention is a method of determining each individual process using the individual process determination system of the present invention. Therefore, the individual process determination system of the present invention will be described first, and then the individual process determination method of the present invention will be described.

FIG. 3 is a block diagram showing the main configuration of the individual process determination system 100 of the present invention. As shown in this figure, the individual process determination system 100 of the present invention includes a trigger signal receiving means 101 and a selection means 102, a communication device 103, a process display control means 104, a process display means 105, and an equipment control means. 106, correction time storage means 107, and the like.

The selection means 102, the process display control means 104, and the equipment control means 106 among the main elements constituting the individual process determination system 100 can be manufactured as dedicated ones, or can be made using a general-purpose computer device. can. This computer device includes a processor such as a CPU, memory such as ROM and RAM, input means such as a mouse and keyboard, and a display. It can be configured by a mobile terminal including.

Further, the correction time storage means 107 for storing the "correction time" to be described later can use a storage device of a general-purpose computer, or can be constructed in a database server. When building a database server, it can be placed on a local network (LAN: Local Area Network), or it can be a cloud server that stores via the Internet (that is, wireless communication).

Each main element constituting the individual process determination system 100 will be described in detail below.

(Trigger signal receiving means)
As described above, the trigger signal receiving means 101 is mounted on the machine to be used and is connected to the specific electrical equipment to receive trigger signals (start trigger signal and stop trigger signal) of the specific electrical equipment. More specifically, by connecting a trigger signal receiving means to an electric cord related to power supply operation of the specific electric equipment, the presence or absence of current due to opening and closing of the relay on the specific electric equipment side is detected. Receives an ON/OFF (on/off) trigger signal. In addition, the trigger signal receiving means 101 converts the received analog trigger signal into a digital signal (A/D conversion), assigns the identifier of the trigger signal receiving means to the digital signal, and temporarily It can also be stored statically (or non-volatilely).

(Communication equipment)
The communication device 103 is installed in the tunnel pit and transmits the trigger signal received by the trigger signal receiving means 101 to the selection means 102, and is a so-called access point using WiFi (registered trademark) or the like. Therefore, the communication device 103 and the selection means 102 are connected wirelessly (or wired), and the communication device 103 and the trigger signal receiving means 101 are also connected wirelessly (or wired). Therefore, when the communication device 103 is installed, the selection means 102 can receive the trigger signal in real time, and the subsequent processing (eg selection of individual steps) can also be performed in real time. Note that the communication device 103 can be omitted, but in that case, it is difficult to perform processing such as selection of individual processes in real time, and determination will be made after the fact. In other words, if the communication equipment 103 is installed, the individual processes currently being executed at the tunnel face can be grasped. will remain.

(Means of selection)
The selection means 102 receives a trigger signal, selects an individual process using the received trigger signal, and calculates the working time of the individual process based on the received start trigger signal and stop trigger signal. . More specifically, the selection means 102 identifies the specific electrical equipment by means of the identifier contained in the trigger signal, identifies the machine to be used in which the specific electrical equipment is provided, and further identifies the specific electrical equipment among the plurality of individual processes that make up the excavation cycle. Select an individual process related to the machine to be used from the Further, the selection means 102 sets the time at which the start trigger signal is received as the start point and the time at which the stop trigger signal is received as the end point, and selects part (or all) of the period from the start point to the end point of the individual process. Calculated as work hours. The selection means 102 can be installed in the tunnel pit, but it is preferable to install it in a place with a relatively well-organized environment, such as a management building or a construction site office in the outskirts of the tunnel.

(Process display control means)
The process display control means 104 causes the process display means 105 to display the individual processes selected by the selection means 102 . The process display means 105 is installed around the tunnel portal, and is, for example, an electric bulletin board or the like that displays individual processes currently being carried out at the tunnel face. Alternatively, it is possible to display the individual processes of the previous process and the subsequent process together with the individual process being executed. By displaying individual processes in progress, it is possible to guide people other than related parties such as visitors, so in the case of dangerous work, it is possible to avoid entering the tunnel pit, thereby improving safety. In addition, workers waiting in the outskirts of the tunnel can make appropriate preparations for the subsequent process, and can efficiently perform the work of the next process. Note that the process display control means 104 may be installed in the same place as the selection means 102 (for example, a management building, a construction site office, etc.).

(equipment control means)
The facility control means 106 adjusts the output of a blower that sends air to the windpipe in the tunnel and a dust collector installed in the tunnel. At the tunnel face, which is the main working place for miners, the environment (especially the air environment) varies greatly depending on the type of work. For example, the environment is not so bad when steel shoring is erected, but on the other hand, when face excavation or concrete spraying is performed, dust is generated frequently and the environment becomes poor. In other words, it is desirable to operate the blower and the dust collector with strength according to the type of work. Therefore, the equipment control means 106 adjusts the output of the blower and the dust collector according to the individual process selected by the selection means 102 . For example, when the selection means 102 selects steel shoring installation as an individual process, the facility control means 106 operates the blower and dust collector with a relatively small output, and the selection means 102 selects face excavation and concrete spraying as individual processes. is selected, the facility control means 106 should operate the blower and the dust collector with a relatively large output. The facility control means 106 may be installed in the same place as the selection means 102 (for example, a management building, a construction site office, etc.), like the process display control means 104 .

(Correction time storage means)
As described above, the selection means 102 uses the time when the start trigger signal is received as the starting point, the time when the stop trigger signal is received as the end point, and a part (or all) of the period from the start point to the end point. Calculated as working hours for individual processes. However, depending on the individual process, there may be times that are inappropriate for the individual process, such as the time when the machine being used moves and the time required for various preparations. Therefore, it is preferable to set an "unsuitable time" for each individual process in advance as a "correction time (positive or negative)" and store this correction time in the correction time storage means 107. FIG. In this case, the selection means 102 calculates the working time taking into consideration the correction time. More specifically, the selection means 102 refers to the correction time storage means 107 for the individual process selected by the selection means 102 and reads the correction time associated with the individual process from the correction time storage means 107 . Then, as shown in FIG. 4, the time from when the start trigger signal is received (start point) to the time when the stop trigger signal is received (end point) is defined as the "use time" of the machine in use, and the correction time is subtracted from this use time. Calculate the time. Of course, a different correction time can be set for each individual process, or no correction time can be set for a particular individual process.

The main processing flow when using the individual process determination system 100 of the present invention will be described with reference to FIG. FIG. 5 is a flow diagram showing the main processing flow of the individual process determination system 100. The center column shows the processing to be executed, the left column shows the input information necessary for the processing, and the right column shows the input information necessary for the processing. It shows the output information resulting from the processing.

For example, when the miner turns on the headlight of the twin header (or road header), the trigger signal receiving means 101 receives the activation trigger signal (Step 210 in FIG. 5). Although the selection means 102 can select an individual process at the timing of receiving the activation trigger signal, it is preferable to wait for a certain period of time after receiving the activation trigger signal in order to eliminate noise such as operation errors (Step 220 in FIG. 5). Then, when a predetermined period of time has elapsed (Yes in Step 230 of FIG. 5), the process proceeds to subsequent processing, and if the predetermined period of time has not elapsed (No in Step 230 of FIG. 5), the process continues to wait.

When a certain period of time elapses after receiving the activation trigger signal, the selecting means 102 selects an individual process from among a plurality of individual processes constituting the excavation cycle based on the trigger signal (activation trigger signal) (Step 240 in FIG. 5). At this time, it is preferable to select the individual process selected as the previous process as a reference. For example, when receiving a start trigger signal related to the headlight (specific electrical equipment) of the side dump (used machine), after confirming that face excavation is selected as the previous process, remove the shear as a separate process It is selected. By the way, with the pattern of "individual process 01" shown in FIG. Since a plurality of pieces of information can be obtained from the patterns of "individual process 02" and "individual process 03", individual processes can be selected by various methods.

For example, in the pattern of the individual process 02, since a plurality of specific electrical devices are set for one machine used, a plurality of trigger signals can be used. In this case, it is preferable to select an individual process after judging the "operating state" and "idle state" of each specific electrical device. FIG. 6(a) is a model diagram schematically showing the "operating state" and "rest state" of the specific electrical equipment, and FIG. It is a model figure which shows typically being selected. As shown in this figure, the "operating state" is from the time when the start trigger signal is received to the time when the stop trigger signal is received for the same specified electrical equipment, and the time when the stop trigger signal is received for the same specified electrical equipment. The "dormant state" is set until the time when the next activation trigger signal is received. For example, if the hydraulic pump (specific electrical equipment) of the concrete spraying machine (machine used) is in operation and the hydraulic pump (specific electrical equipment) is inactive, the selecting means 102 selects the individual process as "construction of steel shoring." If both the hydraulic pump of the concrete spraying machine and the hydraulic pump are in operation, select "concrete spraying" as an individual process.

Also, in the pattern of the individual process 03, since a plurality of machines to be used are set for one individual process, a plurality of trigger signals can be used. In this case, the starting and ending points of the working time may be determined by trigger signals of the different machines used. FIG. 7 is a model diagram schematically showing that individual processes are selected according to combinations of trigger signals of different machines used. In the case of blasting excavation, face excavation is performed after rock bolting. It is also conceivable to receive a stop trigger signal for the hydraulic pump of the drill jumbo at the end of drilling. In other words, no trigger signal is received between rock bolting and face excavation, and rock bolting and face excavation are a series of individual processes (in this case, rock bolting continues). Therefore, rock bolting and face excavation cannot be selected appropriately.

Therefore, as shown in FIG. 7, the selection means 102 uses a trigger signal related to a machine (mortar injection pump) that is different from the drill jumbo. For example, the selecting means 102 determines that "rock bolt driving" has started when a start trigger signal related to the hydraulic pump of the drill jumbo is received, and determines that "rock bolt driving" has started when a stop trigger signal related to the mortar injection pump is received. It is determined that “face excavation” is started when “casting” is completed. Then, when a stop trigger signal relating to the hydraulic pump of the drill jumbo is received, it is determined that the "face excavation" is finished. That is, the selection means 102 selects "rock bolt driving" from the reception of the activation trigger signal related to the hydraulic pump of the drill jumbo to the reception of the stop trigger signal related to the mortar injection pump, and "Facing excavation" is selected between the reception of the signal and the reception of the stop trigger signal for the hydraulic pump of the drill jumbo. Here, after the trigger signal receiving means 101 receives the activation trigger signal related to the hydraulic pump of the drill jumbo, it receives the activation trigger signal related to the mortar injection pump. determined to be In addition, when it is determined that "face excavation" has started when a stop trigger signal related to the mortar injection pump is received, there is a possibility that the work time will be longer than the actual time calculated. ” to adjust the work hours before obtaining.

When an individual process is selected by the selection means 102, the process display control means 104 causes the process display means 105 to display the individual process (Step 250 in FIG. 5), and the facility control means 106 controls the blower or the dust collector according to the individual process. is adjusted (Step 260 in FIG. 5).

When the individual process in progress is completed and, for example, the miner turns off the headlight of the twin header (or road header), the trigger signal receiving means 101 receives the stop trigger signal (Step 270 in FIG. 5). Then, the selecting means 102 calculates the working time of the individual process, with the time at which the start trigger signal is received as the start point and the time at which the stop trigger signal is received as the end point (Step 280 in FIG. 5). At this time, as described above, the work time can be obtained by using the "correction time".

3. Individual Process Determination Method Subsequently, the individual process determination method of the present invention will be described with reference to FIG. The individual process determination method of the present invention is a method of determining each individual process using the individual process determination system 100 described so far. Only the contents specific to the individual process determination method of the present invention will be explained. That is, the contents not described here are the same as those described in "2. Individual process determination system".

FIG. 8 is a flowchart showing main steps of the individual step determination method of the present invention. As shown in this figure, first, the trigger signal receiving means 101 receives the activation trigger signal (Step 10 in FIG. 8). For example, when a miner turns on a side dump headlight, the trigger signal receiving means 101 receives an activation trigger signal associated with the side dump headlight.

When the activation trigger signal is received, the selecting means 102 selects an individual process corresponding to the trigger signal (activation trigger signal) (Step 20 in FIG. 8). Then, the process display control means 104 causes the process display means 105 to display the individual process (Step 30 in FIG. 8), and the facility control means 106 adjusts the output of the blower and the dust collector according to the individual process (Step 40 in FIG. 8). ).

When the individual process in progress is completed and, for example, the miner turns off the side dump headlight, the trigger signal receiving means 101 receives the stop trigger signal. Then, the selecting means 102 calculates the work time of the individual process, with the time at which the start trigger signal is received as the start point and the time at which the stop trigger signal is received as the end point (Step 50 in FIG. 8).

The individual process determination system and the individual process determination method of the present invention can be used at construction sites where a plurality of different individual processes such as tunnel excavation, earthwork and concrete work are performed in shifts. According to the present invention, it is possible to efficiently analyze the construction cycle time, and as a result, it is possible to perform appropriate cost management based on actual results, which in turn reduces the cost of construction infrastructure. Considering that it is possible to improve the efficiency of the process, the invention is expected not only to be industrially applicable but also to make a great contribution to society.

100 Individual process judgment system of the present invention 101 Trigger signal receiving means (of individual process judgment system) 102 Selection means (of individual process judgment system) 103 Communication device (of individual process judgment system) 104 Process display (of individual process judgment system) Control means 105 Process display means (individual process judgment system) 106 Facility control means (individual process judgment system) 107 Correction time storage means (individual process judgment system)

Claims (7)

A system for selecting one individual process from among a plurality of different individual processes performed in tunnel excavation based on power supply operation of electrical equipment provided in the construction machine,
trigger signal receiving means mounted on the construction machine used in the individual process for receiving a trigger signal relating to power supply operation of the electrical equipment;
selecting means for selecting the individual process based on the trigger signal received by the trigger signal receiving means;
The trigger signal receiving means receives a start trigger signal when a predetermined specific electrical device among the electrical devices provided in the construction machine is powered on, and receives a start trigger signal when the power of the specific electrical device is turned on. receive a stop trigger signal when released,
The selecting means selects the individual process based on the construction machine associated with the trigger signal receiving means that has received the trigger signal, and selects the individual process based on the reception time of the start trigger signal and the reception time of the stop trigger signal. Calculate the working time of individual processes,
An individual process judgment system characterized by: further comprising a communication device that is installed in the tunnel and transmits the trigger signal received by the trigger signal receiving means;
The selection means arranged outside the tunnel receives the trigger signal transmitted from the communication device and selects the individual process.
The individual process determination system according to claim 1, characterized by: Two or more of the specific electrical devices are set on the construction machine, and the trigger signal receiving means for receiving the trigger signal of each of the specific electrical devices is mounted on the construction machine,
The selecting means sets the specific electrical equipment related to the trigger signal receiving means to an operating state from the time when the trigger signal receiving means receives the start trigger signal until the time when the stop trigger signal is received, setting the specific electrical device to a dormant state from the time the signal is received until the time the activation trigger signal is received;
Further, the selecting means selects the individual process based on a combination of the operating state and the resting state related to two or more of the specific electrical devices set for the same construction machine.
3. The individual process determination system according to claim 1 or 2, characterized in that: The selection means obtains the working time from the time when the start trigger signal is received until the time when the stop trigger signal is received, and calculates the working time by subtracting the correction time related to the selected individual process from the working time. ,
The correction time is set in advance for each individual step,
4. The individual process determination system according to any one of claims 1 to 3, characterized in that: Further comprising a process display control means for displaying the individual process currently being performed on a process display means installed at the tunnel entrance,
The process display control means displays the individual process selected by the selection means.
5. The individual process determination system according to any one of claims 1 to 4, characterized in that: Further comprising equipment control means for adjusting the output of a blower that sends air to the windpipe in the tunnel and/or the dust collector installed in the tunnel,
The equipment control means adjusts the output of the blower and/or the dust collector according to the individual process selected by the selection means.
6. The individual process determination system according to any one of claims 1 to 5, characterized in that: A method for selecting one individual process from among a plurality of different individual processes performed in tunnel excavation based on power supply operation of an electrical device provided in a construction machine, the method comprising:
a trigger signal receiving step of receiving a trigger signal related to power supply operation of the electrical equipment by trigger signal receiving means mounted on the construction machine used in the individual step;
a selection step of selecting the individual step based on the trigger signal received by the trigger signal receiving means;
In the trigger signal receiving step, a start trigger signal is received when a predetermined specific electrical device among the electrical devices provided in the construction machine is powered on, and when the specific electrical device is powered on. receive a stop trigger signal when released,
In the selecting step, the individual process is selected based on the construction machine associated with the trigger signal receiving means that has received the trigger signal, and the individual process is selected based on the reception time of the start trigger signal and the reception time of the stop trigger signal. Calculate the working time of individual processes,
An individual process determination method characterized by:

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