Analysis method, system and equipment for tunneling efficiency of tunneling working face and medium

Abstract

The invention discloses a method, a system and equipment for analyzing the tunneling efficiency of a tunneling working face and a medium. The method comprises the following steps: acquiring historical data of tunneling equipment and a crossheading sealing-tape machine; obtaining a production time set of the driving working face according to the historical data; according to the production time set of the driving working face, the actual cutting duration of the driving working face is obtained; acquiring tunneling footage and working mode data; and obtaining the tunneling efficiency of the tunneling working face according to the production time set, the actual cutting duration, the tunneling footage and the working mode data. The method can automatically and accurately analyze the driving efficiency of the driving working face.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine production, and in particular to an analysis method, system, equipment and medium for the tunneling efficiency of a tunneling working face. Background Art

[0002] Continuous miners, fully mechanized tunneling machines, and bolter miners are the primary equipment used in coal mine roadway development and construction, or tunneling equipment. Their tunneling efficiency is directly related to the tight connection between mining faces in large coal mines. To avoid uneven production, measure the efficiency of tunneling teams across mines, and link this efficiency to the mine's wage system to ensure efficient and rapid tunneling, tunneling efficiency analysis is necessary. Currently, there are many methods for calculating tunneling efficiency. These include installing a memory-based coal-cutting detection module on the tunneling equipment to automatically record and analyze the data after the tunneling equipment completes cutting, or analyzing it within the automated control system of a centralized control center. However, existing analysis methods fail to account for inefficient operations such as tunneling support, equipment idling, and startup waiting for trial production. Furthermore, existing analysis methods rely heavily on manual labor, which can lead to significant errors caused by personnel unfamiliar with underground operations. This results in widely varying data extraction, low accuracy, and limited applicability, failing to truly reflect the true level of tunneling efficiency. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a method for analyzing the excavation efficiency of an excavation working face, which can automatically and accurately analyze the excavation efficiency of the excavation working face.

[0004] The present invention also proposes a system, equipment and medium having the above-mentioned analysis method for the excavation efficiency of the excavation working face.

[0005] A method for analyzing excavation efficiency of an excavation working face according to a first embodiment of the present invention includes:

[0006] Obtain historical data of tunneling equipment and conveyor belt conveyors;

[0007] According to the historical data, a production time set of the excavation working face is obtained;

[0008] Obtaining the actual cutting time of the excavation working face according to the production time set of the excavation working face;

[0009] Obtain excavation footage and working mode data;

[0010] The excavation efficiency of the excavation working face is obtained according to the production time set, the actual cutting time, the excavation footage, and the working mode data.

[0011] According to an embodiment of the present invention, a method for analyzing the excavation efficiency of an excavation working face has at least the following beneficial effects: obtaining historical data required for analysis, obtaining the production time set and actual cutting time of the excavation working face based on the historical data, taking into account the invalid production work in actual production, and finally obtaining the excavation efficiency of the excavation working face based on the production time set, actual cutting time, excavation footage, and working mode data. The excavation efficiency of the excavation working face is automatically analyzed by combining the actual working time of the equipment, i.e., the production time set, actual cutting time, excavation footage, and the actual working time of the personnel, i.e., the working mode data. At the same time, taking into account the invalid production work, the obtained excavation efficiency of the excavation working face is accurate.

[0012] According to some embodiments of the present invention, the production time set includes: the production time period of the tunneling equipment, the production time period of the chute belt conveyor, and the production time of the tunneling working face;

[0013] The production time set of the excavation working face obtained according to the historical data includes:

[0014] If the historical current data of the tunneling equipment is less than or equal to a preset first current ratio of the rated current of the tunneling equipment, the historical current data is used as the first historical current data; if not, the historical current data is invalid data;

[0015] If the historical current data of the chute belt conveyor is less than or equal to a preset second current ratio of the rated current of the chute belt conveyor, the historical current data is used as the second historical current data; if not, the historical current data is invalid data;

[0016] Obtaining a production time period of the tunneling equipment according to the first historical current data;

[0017] Obtaining a production time period of the chute belt conveyor according to the second historical current data;

[0018] The production time of the excavation working face is obtained according to the production time period of the excavation equipment and the production time period of the chute belt conveyor.

[0019] According to some embodiments of the present invention, the production time period of the tunneling equipment includes: the production start time of the tunneling equipment and the production end time of the tunneling equipment; and the production time period of the tunneling equipment obtained according to the first historical current data includes:

[0020] In the first historical current data, according to the timestamps from beginning to end, when the current corresponding to a timestamp is greater than 0 and the current quality stamp corresponding to the timestamp is Good and the current corresponding to the previous timestamp is 0, the timestamp is the production start time of the tunneling equipment;

[0021] In the first historical current data, according to the timestamps from the back to the front, when the current corresponding to a timestamp is greater than 0 and the current quality stamp corresponding to the timestamp is Good and the current corresponding to the next timestamp is 0, the next timestamp after the timestamp is the production end time of the tunneling equipment;

[0022] The production time period of the chute belt conveyor includes: the production start time of the chute belt conveyor and the production end time of the chute belt conveyor;

[0023] The production time period of the chute belt conveyor obtained according to the second historical current data includes:

[0024] In the second historical current data, according to the timestamps from the beginning to the end, when the current corresponding to a timestamp is greater than 0 and the current quality stamp corresponding to the timestamp is Good, and the current corresponding to the previous timestamp is 0, the timestamp is the production start time of the chute belt conveyor;

[0025] In the second historical current data, according to the timestamps from back to front, when the current corresponding to a certain timestamp is greater than 0 and the current quality stamp corresponding to the timestamp is Good and the current corresponding to the next timestamp is 0, the next timestamp after the timestamp is the production end time of the chute belt conveyor.

[0026] According to some embodiments of the present invention, obtaining the production time of the excavation working face according to the production time period of the excavation equipment and the production time period of the chute belt conveyor includes:

[0027] Obtaining the production start time of the excavation working face according to the production start time of the excavation equipment and the production start time of the chute belt conveyor, including: taking the latest timestamp of the production start time of the excavation equipment and the production start time of the chute belt conveyor, determining whether the latest timestamp is not earlier than a preset latest start timestamp, and if so, using the latest timestamp as the production start time of the excavation working face;

[0028] If not, determining whether the tunneling equipment or the chute belt conveyor has experienced a shutdown phenomenon within a preset time period starting from the production start time of the tunneling working face; and if so, continuing to obtain the production time period of the tunneling equipment based on the first historical current data and the production time period of the chute belt conveyor based on the second historical current data;

[0029] If not, the production start time of the current excavation working face is used as the production time of the excavation working face;

[0030] Obtaining the production end time of the excavation working face according to the production end time of the excavation equipment and the production end time of the chute belt conveyor, including: taking the earliest timestamp of the production end time of the excavation equipment and the production end time of the chute belt conveyor, determining whether the earliest timestamp is no later than the preset latest end timestamp, and if so, using the earliest timestamp as the production end time of the excavation working face;

[0031] If not, determining whether both the tunneling equipment and the chute belt conveyor are in production within a preset time period starting from the production end time of the tunneling working face; and if so, continuing to obtain the production time period of the tunneling equipment based on the first historical current data and the production time period of the chute belt conveyor based on the second historical current data;

[0032] If not, the production end time of the current excavation working face is used as the production time of the excavation working face.

[0033] According to some embodiments of the present invention, obtaining the actual cutting duration of the excavation working face according to the production time set of the excavation working face includes:

[0034] Obtaining the current of the tunneling equipment during the production time period according to the production time period of the tunneling equipment;

[0035] Obtaining a valid time period set based on the production time period of the tunneling equipment and the current of the tunneling equipment within the production time period, including: within the production time period of the tunneling equipment, dividing the current of the tunneling equipment within the production time period into production current time periods according to preset time periods; and aggregating the production current time periods that meet the valid conditions into the valid time period set; wherein the valid conditions include: the difference between the current within the production current time period and the minimum current is greater than a stability limit, the minimum current is the minimum current within the production time period, the maximum current is the maximum current within the production time period, and the stability limit is obtained based on the maximum current and the minimum current;

[0036] The actual cutting duration of the excavation working face is obtained according to the effective time period set.

[0037] According to some embodiments of the present invention, obtaining the excavation efficiency of the excavation working face according to the production time set, the actual cutting time, the excavation footage, and the working mode data includes:

[0038] Obtaining a cutting efficiency based on the actual cutting time and the production time set, specifically, cutting efficiency = actual cutting time / production time period of the tunneling equipment, wherein the production time set includes the production time period of the tunneling equipment;

[0039] According to the actual cutting time and the excavation footage, the per-meter time is obtained, specifically, per-meter time = actual cutting time / excavation footage;

[0040] According to the production time set and the working mode data, the startup efficiency is obtained, specifically startup efficiency = production time of the excavation working face / planned duration of the day, wherein the planned duration of the day is obtained according to the working mode data;

[0041] The excavation efficiency of the excavation working face is obtained according to the cutting efficiency, the time per meter, and the startup efficiency.

[0042] According to some embodiments of the present invention, obtaining the excavation efficiency of the excavation working face according to the cutting efficiency, the time per meter, and the startup efficiency includes:

[0043] According to the preset proportions, the cutting efficiency, the time per meter, and the startup efficiency are weighted and calculated to obtain the excavation efficiency of the excavation working face. The formula is as follows:

[0044] Per 掘 =Z1·P 截割效率 +Z2·P 单米时长 +Z3·P 开机效率

[0045] Among them, P 截割效率 is the cutting efficiency, P 单米时长 is the single meter duration, P 开机效率 is the power-on efficiency, Per 掘 is the excavation efficiency of the excavation working face, the proportions of the cutting efficiency, the single-meter time, and the startup efficiency are Z1, Z2, and Z3 respectively, and Z1, Z2, and Z3 are all preset values, and Z1+Z2+Z3=100%.

[0046] According to a second aspect of the present invention, a system for analyzing excavation efficiency of an excavation working face includes:

[0047] A control module, configured to execute the method according to any one of the first aspects, and obtain a corresponding excavation efficiency of an excavation working face according to a user instruction;

[0048] The interactive module is connected to the control module, receives the user instruction, sends the user instruction to the control module, receives the excavation efficiency of the excavation working face sent by the control module and displays it.

[0049] An electronic device according to an embodiment of a third aspect of the present invention includes:

[0050] Memory, used to store programs;

[0051] A processor is used to execute the program stored in the memory. When the processor executes the program stored in the memory, the processor is used to execute the method as described in any one of the first aspects.

[0052] According to a fourth aspect of an embodiment of the present invention, a storage medium stores computer-executable instructions, where the computer-executable instructions are used to execute the method as described in any one of the first aspects.

[0053] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purposes and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation to the technical solution of the present invention.

[0055] Figure 1 This is a flow chart of a method for analyzing the excavation efficiency of an excavation working face provided by one embodiment of the present invention;

[0056] Figure 2 is a flow chart of a method for analyzing excavation efficiency of an excavation working face provided by another embodiment of the present invention;

[0057] Figure 3 is a schematic diagram of a data quality stamp under normal network conditions provided by another embodiment of the present invention;

[0058] Figure 4 is a schematic diagram of a data quality stamp under a network anomaly provided by another embodiment of the present invention;

[0059] Figure 5 is a schematic diagram of step S214 provided in another embodiment of the present invention;

[0060] Figure 6 It is a schematic diagram of a system for analyzing the excavation efficiency of an excavation working face provided by another embodiment of the present invention. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0062] It should be understood that in the description of the embodiments of the present invention, "multiple" (or multiple) means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, and "above," "below," and "within" are understood to include the number itself. The terms "first," "second," and so on are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or implicitly indicating the number of the indicated technical features, or implicitly indicating the order of the indicated technical features.

[0063] like Figure 1 As shown, an embodiment of the present invention provides a method for analyzing the excavation efficiency of an excavation working face, comprising:

[0064] Step S100, obtaining historical data of tunneling equipment and trench conveyor belt conveyor;

[0065] Step S200: Obtain the production time set and actual cutting time of the excavation working face based on historical data;

[0066] Step S300: Acquire excavation footage and working mode data;

[0067] Step S400: Obtain the excavation efficiency of the excavation working face according to the production time set, actual cutting time, excavation footage, and working mode data.

[0068] Obtain the historical data required for analysis, and obtain the production time set and actual cutting time of the excavation working face based on the historical data. Taking into account the invalid production work in actual production, finally obtain the excavation efficiency of the excavation working face based on the production time set, actual cutting time, excavation footage, and work mode data. Combine the actual working time of the equipment, namely the production time set, actual cutting time, actual excavation footage, and the actual working time of the personnel, namely the work mode data, to automatically analyze the excavation efficiency of the excavation working face. At the same time, taking into account the invalid production work, the excavation efficiency of the excavation working face obtained is accurate.

[0069] It should be noted that the coal mining excavation process is as follows: After confirming that all equipment is in good condition, the continuous miner, bolter, or fully-mechanized tunneling machine is started. During the coal cutting process, the operator will adjust the rotation speed and propulsion speed of the cutting head according to the thickness and hardness of the coal seam to ensure coal cutting efficiency and safety. In particular, only one tunneling equipment is used for production on a working face;

[0070] At the same time as the coal cutting operation, the chute belt conveyor is started, and the shuttle car (continuous transport car) transfers the coal generated by the coal cutting operation to the chute belt conveyor through the crusher;

[0071] After the coal cutting operation is completed, the anchor drill or anchor bolt is activated to carry out anchor support. Among them, the anchor drill is a device that combines coal cutting and anchoring in one, which can quickly complete the support work of the working face.

[0072] It should also be noted that this method uses the operating current of the tunneling equipment and the chute belt conveyor for analysis and is suitable for all models of tunneling equipment and chute belt conveyors.

[0073] In one embodiment, the coal mine excavation working face production equipment team executing the method includes: a continuous excavation team, a comprehensive excavation team, and an anchor excavation team. Each excavation team is equipped as follows:

[0074]

[0075] Among them, the supporting analysis of the digging team:

[0076] Equipment Features: Continuous digging machines are usually designed to adapt to geological conditions with thicker and harder coal seams. They can achieve fast and continuous coal mining processes and are characterized by high reliability and high efficiency.

[0077] Key Equipment: The continuous excavator (CTM) is the core equipment, typically equipped with an efficient cutting system and a stable travel mechanism to ensure efficient operation even in complex geological conditions. In addition to the CTM, supporting transport equipment such as shuttle cars or belt conveyors, as well as support equipment such as anchor bolters, are also required.

[0078] Comprehensive digging team supporting analysis:

[0079] Equipment features: The tunnel boring machine is suitable for changing geological conditions and can adapt to different coal seam thicknesses and hardnesses, with high adaptability and flexibility;

[0080] Key Equipment: A tunnel boring machine (TBM) is the core equipment, typically equipped with multiple cutting modes to select the appropriate cutting method based on different geological conditions. TBMs also require coordination with transport equipment such as scraper conveyors or belt conveyors to efficiently transport coal.

[0081] Analysis of supporting equipment for anchor digging team:

[0082] Equipment Features: The anchor miner is a device that combines excavation and anchoring. It is particularly suitable for geological conditions that require immediate support and can improve the stability and safety of the tunnel.

[0083] Key Equipment: The anchor miner is the core equipment, typically equipped with an efficient cutting head and a stable travel mechanism, enabling simultaneous excavation and anchoring operations. In addition to the anchor miner, supporting transport equipment such as shuttle trucks or continuous transport vehicles is also required.

[0084] In one embodiment, in step S100, historical data of the tunneling equipment is obtained by uploading the power switch of the tunneling equipment, and the power switch data is collected into the ground production data warehouse using the hardware RS485 bus interface and the software Modbus protocol; since the tunneling working face has frequent equipment movement, narrow space, and poor geological conditions, the data uploading effect using 5G is not very ideal, so data needs to be uploaded through a wired connection.

[0085] In one embodiment, in step S200, obtaining the production time set and actual cutting duration of the excavation working face based on historical data includes:

[0086] Step S210: Obtain a production time set of the excavation working face based on historical data;

[0087] Step S220: Obtain the actual cutting time of the excavation working face according to the production time set of the excavation working face.

[0088] In one embodiment, if Figure 2 As shown, the production time set includes: the production time period of the tunneling equipment, the production time period of the conveyor belt conveyor in the chute, and the production time of the tunneling working face;

[0089] In step S210, the production time set of the excavation working face is obtained based on historical data, including:

[0090] Step S211: obtaining first historical current data of the tunneling equipment and second historical current data of the belt conveyor in the chute according to the historical data;

[0091] Step S212: Obtaining a production time period of the tunneling equipment according to the first historical current data;

[0092] Step S213: obtaining a production time period of the chute belt conveyor according to the second historical current data;

[0093] Step S214: Obtain the production time of the excavation working face according to the production time period of the excavation equipment and the production time period of the belt conveyor in the chute.

[0094] It should be noted that the historical data is the current data of the tunneling equipment and the chute belt conveyor during a certain period (specifically, one production day); the current data can meet the second-level response. The amount of real-time pressure data collected by a device in one hour is 3,600, and an 8-hour shift generates 28,800 data items.

[0095] In one embodiment, the historical data includes historical current data of the tunneling equipment and historical current data of the belt conveyor in the trench;

[0096] In step S211, first historical current data of the tunneling equipment and second historical current data of the belt conveyor are obtained based on the historical data, including:

[0097] Obtaining first historical current data of the tunneling equipment according to the historical current data of the tunneling equipment and the rated current of the tunneling equipment;

[0098] According to the historical current data of the chute belt conveyor and the rated current of the chute belt conveyor, the second historical current data of the chute belt conveyor is obtained.

[0099] In one embodiment, obtaining first historical current data of the tunneling equipment according to historical current data of the tunneling equipment and the rated current of the tunneling equipment includes:

[0100] If the historical current data of the tunneling equipment is less than or equal to 115% of the rated current of the tunneling equipment, the historical current data is the first historical current data; otherwise, the historical current data is invalid data.

[0101] It is easy to understand that the first historical current data is a collection of at least one current data, which is actually a filtering and cleaning of the data. The first historical current data is actually the effective current data of the tunneling equipment during the period corresponding to the historical data, overcoming the shortcoming of the prior art that the current is greater than zero, which means that the equipment is in production, resulting in inaccurate analysis.

[0102] In one embodiment, obtaining the second historical current data of the chute belt conveyor according to the historical current data of the chute belt conveyor and the rated current of the chute belt conveyor includes:

[0103] If the historical current data of the chute belt conveyor is less than or equal to 115% of the rated current of the chute belt conveyor, the historical current data is the second historical current data; otherwise, the historical current data is invalid data.

[0104] It is easy to understand that the second historical current data is a set of current data including at least one, and the first historical current data is actually the effective current data of the chute belt conveyor during the period corresponding to the historical data.

[0105] In one embodiment, the production time period of the tunneling equipment includes: the production start time of the tunneling equipment and the production end time of the tunneling equipment;

[0106] In step S212, obtaining the production time period of the tunneling equipment according to the first historical current data includes:

[0107] In the first historical current data, according to the timestamps from the beginning to the end, when the current corresponding to a timestamp is greater than 0, the current quality stamp corresponding to a timestamp is Good, and the current corresponding to the previous timestamp is 0, the timestamp is the production start time of the tunneling equipment;

[0108] In the first historical current data, according to the timestamps from back to front, when the current corresponding to a timestamp is greater than 0 and the current quality stamp corresponding to a timestamp is Good and the current corresponding to the next timestamp is 0, the next timestamp after the timestamp is the production end time of the tunneling equipment.

[0109] It should be noted that "the current quality stamp corresponding to a certain timestamp is Good" means that the current corresponding to a certain timestamp is uploaded normally; Figure 3-4 As shown in the figure, the quality stamp is a mark added by the data acquisition software to the data when collecting downhole data, which represents the data on-off status and is used to indicate the credibility, accuracy or acquisition status of the data. Figure 3 As shown in the figure, when the acquisition software collects downhole data normally, the data value collected every 1 second has a timestamp and quality stamp. When the data is uploaded normally, the quality stamp is Good. Figure 4 As shown in the figure, when a fault occurs in the downhole equipment network, the quality stamp of the data collected from the equipment is Bad; for the historical data stored in the time series database, the quality stamp represents the quality status of the data in the form of a digital code. Currently, the number 192 represents the meaning of Good quality stamp, and the number 0 represents the meaning of Bad quality stamp.

[0110] In one embodiment, the production time period of the chute belt conveyor includes: the production start time of the chute belt conveyor and the production end time of the chute belt conveyor;

[0111] In step S213, obtaining the production time period of the chute belt conveyor according to the second historical current data includes:

[0112] In the second historical current data, based on the timestamps from the previous to the next, when the current corresponding to a timestamp is greater than 0, the current quality stamp corresponding to a timestamp is Good, and the current corresponding to the previous timestamp is 0, the timestamp is the production start time of the chute belt conveyor;

[0113] In the second historical current data, according to the timestamps from back to front, when the current corresponding to a certain timestamp is greater than 0 and the current quality stamp corresponding to a certain timestamp is Good and the current corresponding to the next timestamp is 0, the next timestamp after the timestamp is the production end time of the chute belt conveyor.

[0114] In one embodiment, in step S214, obtaining the production time of the excavation working face according to the production time period of the excavation equipment and the production time period of the belt conveyor in the chute includes:

[0115] Obtaining the production start time of the excavation working face according to the production start time of the excavation equipment and the production start time of the chute belt conveyor; Obtaining the production start time of the excavation working face according to the production start time of the excavation equipment and the production start time of the chute belt conveyor includes: taking the latest timestamp of the production start time of the excavation equipment and the production start time of the chute belt conveyor, determining whether the latest timestamp is not earlier than the preset latest start timestamp, and if so, using the latest timestamp as the production start time of the excavation working face;

[0116] If not, determine whether the tunneling equipment or the chute belt conveyor has stopped within a preset time period from the production start time of the tunneling working face. If so, continue to obtain the production time period of the tunneling equipment based on the first historical current data and the production time period of the chute belt conveyor based on the second historical current data;

[0117] If not, the production start time of the current excavation working face is used as the production time of the excavation working face;

[0118] Obtaining the production end time of the excavation working face according to the production end time of the excavation equipment and the production end time of the chute belt conveyor; Obtaining the production end time of the excavation working face according to the production end time of the excavation equipment and the production end time of the chute belt conveyor includes: taking the earliest timestamp of the production end time of the excavation equipment and the production end time of the chute belt conveyor, determining whether the earliest timestamp is not later than the preset latest end timestamp, and if so, using the earliest timestamp as the production end time of the excavation working face;

[0119] If not, determine whether both the tunneling equipment and the chute belt conveyor are in production within a preset time period starting from the production end time of the tunneling working face. If so, continue to obtain the production time period of the tunneling equipment based on the first historical current data and the production time period of the chute belt conveyor based on the second historical current data;

[0120] If not, the production end time of the current excavation working face is used as the production time of the excavation working face.

[0121] It is easy to understand that the production time of the excavation working face includes the production start time and the production end time of the excavation working face. Continuing to obtain the production time period of the excavation equipment based on the first historical current data is to use the production start time or production end time of the excavation equipment as the start or end timestamp of the first historical current data; obtaining the production time period of the chute belt conveyor based on the second historical current data is to use the production start time or production end time of the chute belt conveyor as the start or end timestamp of the first historical current data.

[0122] For example, Figure 5 As shown, in step S214, the tunneling equipment is obtained at Z according to the historical data of the current shift.t2 -Z t1 The first historical current data for the time interval △Zt is A[], and the first historical current data for the chute belt conveyor is B[]. The two sets of data are cleaned, filtered, and analyzed. Assuming that the tunneling equipment and the chute belt conveyor are operating simultaneously as the production conditions of the working face, the production interval of the day's shift is analyzed as follows:

[0123] i) Determine the production start time T of the tunneling equipment in a production day according to the time sequence value in the first historical current data A[ ] S1K The default daily maintenance time of the excavation working face is 8:00-16:00. The current valid data of the setting within the production day is A i , the current timestamp is The previous valid data is A i-1 , the current timestamp is The next valid data is A i+1 , the current timestamp is Determine the production start time T of tunneling equipment S1K The logic is: i >0) and (A i The quality stamp of A = Good) and (A i-1 =0) and and When The production start time of the tunneling equipment.

[0124] ii) Determination of the production end time of the tunneling equipment. Determine the production end time T of the tunneling equipment in one production day based on the time sequence value in the first historical current data A[]. S4K The current valid data for this production day is A i , the current timestamp is The previous valid data is A i-1 , the current timestamp is The next valid data is A i+1 , the current timestamp is Determine the production start time T of tunneling equipment S4K The logic is: i >0) and (A i The quality stamp of A = Good) and (A i+1 =0) and and When T S1K is the production start time of the tunneling equipment) calculated and analyzed to obtain the production end time of the tunneling equipment, then The production end time of the tunneling equipment. It should be noted that there may be multiple production time periods during a production day, so this is repeated until a time period within a production day that meets the production range of the tunneling equipment is obtained.

[0125] iii) Determine the production start time T according to the time series value in the second historical current data B[] of the belt conveyor in the tunneling groove S2K The default daily maintenance time of the excavation working face is 8:00-16:00. The current valid data is B i , the current timestamp is The previous valid data is B i-1 , the current timestamp is The next valid data is B i+1 , the current timestamp is Determine the production start time T of the belt conveyor in the tunneling channel S2K The logic is: (B i >0) and (B i The quality stamp of B = Good) and (B i-1 =0) and and When It is the production start time of a belt conveyor in the chute.

[0126] iv) Determination of the production end time of the chute belt conveyor. Determine the production end time T of the tunneling equipment in one production day based on the time sequence value in the second historical current data B[] of the chute belt conveyor. S5K . Assume that the current valid data is B i , the current timestamp is The previous valid data is B i-1 , the current timestamp is The next valid data is B i+1 , the current timestamp is Determine the end time T of tunneling equipment production S5K The logic is: (B i >0) and (B i The quality stamp of B = Good) and (B i+1 =0) and and When is the downtime of the belt conveyor in the tunnel. And so on, until a time period within a production day that meets the production range of the belt conveyor in the tunneling tunnel is obtained.

[0127] v) Determine the production start time of the excavation working face. Taking 16:00 as the latest time stamp, after the excavation equipment and the conveyor belt conveyor are turned on, the production start time of the working face is T S1K and T S2K The maximum value in is denoted as T maxK If the T maxK <16:00, it is necessary to determine whether it is trial production. Trial production determination method is: T S1K and T s2KThe maximum value in T3 and the time interval of 30 minutes indicate that the tunneling equipment and belt conveyor have been running continuously. If they have been running continuously, it is considered that production has started. If there is a stoppage during the 30-minute period, it is considered to be trial production, and the start time of production of the working face needs to be re-determined according to the two steps of i) and iii). If the T maxK ≥16:00, no need to judge whether it is trial production, the default is T maxK The time when the excavation working face starts production.

[0128] vi) Determination of the end time of production of the excavation working face. After the production of the excavation working face is completed at 08:00 in the morning, the end time of production of the working face is T S4K and T S5K The minimum value in is denoted as T minK If the T minK >08:00, it is necessary to determine whether to end production. The method for determining whether to end production is: T minK If the interval from the start time of the next simultaneous start is greater than 30 minutes, the excavation working face will end production and no further calculation and analysis will be performed. If there is simultaneous production within the 30-minute period, it is considered to be continued production and the end time of the working face production needs to be re-determined according to steps ii) and iv). minK ≤08:00, no need to judge whether to end production, the default is T minK End the production time of the excavation working face.

[0129] In one embodiment, if Figure 2 As shown, in step S220, according to the production time set of the excavation working face, the actual cutting time of the excavation working face is obtained, which includes:

[0130] Step S221, obtaining the current of the tunneling equipment during the production time period according to the production time period of the tunneling equipment;

[0131] Step S222: obtaining an effective time period set according to the production time period of the tunneling equipment and the current of the tunneling equipment during the production time period;

[0132] Step S223: Obtain the actual cutting duration of the excavation working face according to the effective time period set.

[0133] In one embodiment, in step S222, obtaining the effective time period set according to the production time period of the tunneling equipment and the current of the tunneling equipment during the production time period includes:

[0134] During the production time period of the tunneling equipment, the current of the tunneling equipment during the production time period is divided into production current time periods according to preset time periods;

[0135] The production current time periods that meet the validity conditions are added to the valid time period set; wherein, the validity conditions include: the difference between the current in the production current time period and the minimum current is greater than the stability limit, the minimum current is the minimum current in the production time period, and the maximum current is the maximum current in the production time period. The stability limit is obtained based on the maximum current and the minimum current, which is used to analyze the no-load and cutting states.

[0136] In one embodiment, the validity condition further includes: the quality stamp within the production current time period is Good.

[0137] In one embodiment, the result of (maximum value - minimum value) × 0.1 of the current of the tunneling equipment during the daily production period is taken as the stability limit C. The operating current curve of the tunneling equipment during the production period is sliced ​​vertically by time (1 minute / slice), and a cyclic analysis is performed on the slices, with the cyclic variable i = 60 (seconds) and the slice start time T maxK , slicing end time T minK , the current valid data in the slice is D i , the timestamp is If (D i >0) and (D i The quality stamp of D i -D min >C) and and Determine the cutting time and obtain the cutting time period combination △Gj. maxK to T minK There may be multiple △Gj within the production time period, so by analogy, the cutting segments that meet the judgment conditions are accumulated to form a set of cutting time periods, which overcomes the shortcoming of the existing technology that the excavation efficiency of the excavation working face analyzed when the current is greater than 0 is considered to be inaccurate.

[0138] In one embodiment, if Figure 2 As shown, in step S400, the excavation efficiency of the excavation working face is obtained according to the production time set, actual cutting time, excavation footage, and working mode data, including:

[0139] Step S410: Obtain cutting efficiency, time per meter, and startup efficiency based on the production time set, actual cutting time, driving footage, and working mode data;

[0140] Step S420: Obtain the excavation efficiency of the excavation working face according to the cutting efficiency, the time per meter, and the startup efficiency.

[0141] In one embodiment, in step S410, the cutting efficiency, time per meter, and startup efficiency are obtained based on the production time set, actual cutting time, driving footage, and working mode data, including:

[0142] According to the actual cutting time and production time set, the cutting efficiency is obtained;

[0143] According to the actual cutting time and excavation footage, the time per meter is obtained;

[0144] The startup efficiency is obtained based on the production time set and work mode data.

[0145] The establishment of a "tunneling efficiency-data" model takes into account the cutting efficiency and tunneling feed capacity of the tunnel boring machine as well as the equipment startup efficiency. It clearly gives the functional relationship between tunneling efficiency and the three analysis indicators, improves the calculation accuracy of tunneling efficiency, and has important engineering guidance significance for optimizing production processes, improving construction efficiency, and shortening construction periods, thereby achieving the goal of safe and efficient construction. By establishing a "tunneling efficiency-data" model, the tunneling equipment cutting production time series data is serialized and symbolically described and quantitatively analyzed, and the tunneling support, equipment idling, and startup waiting for trial production in the tunneling working face production process are eliminated to solve the problem that the existing technology cannot accurately analyze the production tunneling efficiency in the production process. The method is simple in steps, reasonably designed, and easy to implement. It not only achieves the purpose of production tunneling efficiency analysis, but also forces the tunneling team to tunnel efficiently and quickly, ensuring the production continuity of the comprehensive mining face. It is highly practical, has good use effects, and is easy to promote and use.

[0146] In one embodiment, based on the analysis of tunneling equipment production data, a model algorithm is constructed to generate three calculation indicators for evaluating the production level of the tunneling working face. These three evaluation indicators are cutting efficiency, time per meter, and start-up efficiency. The calculation formula is as follows:

[0147] Formula 1: Cutting efficiency = actual cutting time / production time period of the tunneling equipment. Since tunneling equipment is operated periodically, there are n production time periods. Therefore, the cutting efficiency must be calculated based on the actual cutting time of each of the n production time periods. The calculation formula is as follows:

[0148]

[0149] Among them, △G j is the actual cutting time of a certain section, △T k The production period of a certain section of tunneling equipment;

[0150] Formula 2: Time per meter = actual cutting time / driving footage;

[0151] Since there are staged cutting processes in the cutting process, there are n actual cutting times. To record the daily footage data of the excavation working face, the underground shift production is completed and the underground staff enter the daily footage data D on time. The calculation formula for single meter time is as follows:

[0152]

[0153] Among them, △G j is the actual cutting time of a certain section, and D is the daily excavation footage of the excavation working face recorded by the staff;

[0154] Formula 3: Operation efficiency = Production time of the excavation face / Planned duration for the day

[0155] Operation time: the time during which the tunneling equipment (bolter, continuous miner, and fully-mechanized tunneling machine) and the conveyor belt conveyor are in simultaneous production (i.e., the production time of the tunneling working face);

[0156] Working mode data: Based on the working hours of the production shift, the planned working hours for the day (i.e., working mode data) are determined. There are three working modes: 3:7, 3:8, 4:6, and 6:7:8. The production day is divided by 12:00. The 24 hours before 12:00 are the production time for the day, and the hours after 12:00 are the production time for the next day. After setting the production tasks every day, the dispatcher promptly enters the working mode data for the day as the planned working hours L. Therefore, the formula for calculating the startup efficiency is as follows:

[0157]

[0158] Among them, T maxK is the starting production time of the excavation working face, T minK is the production time of the excavation working face, and L is the working mode data.

[0159] In one embodiment, the excavation efficiency of the excavation working face is obtained based on the cutting efficiency, the time per meter, and the startup efficiency, including:

[0160] According to the preset proportions, the cutting efficiency, time per meter and startup efficiency are weighted respectively to obtain the excavation efficiency of the excavation working face.

[0161] In one embodiment, in step S420, the cutting efficiency, time per meter, and start-up efficiency are weighted and calculated according to preset proportions to obtain the excavation efficiency of the excavation working face. The formula is as follows:

[0162] Per 掘 =Z1·P 截割效率 +Z2·P 单米时长 +Z3·P 开机效率

[0163] Among them, the proportions of cutting efficiency, single-meter time, and startup efficiency are Z1, Z2, and Z3 respectively, which are pre-adjusted values, where Z1+Z2+Z3=100%.

[0164] like Figure 6 As shown, an embodiment of the present invention further provides a system for analyzing the excavation efficiency of an excavation working face, comprising:

[0165] A control module, configured to execute the above-mentioned method for analyzing the excavation efficiency of an excavation working face, and obtain the corresponding excavation efficiency of the excavation working face according to a user instruction;

[0166] The interactive module is connected to the control module, receives user instructions, sends user instructions to the control module, receives the excavation efficiency of the excavation working face sent by the control module and displays it.

[0167] In one embodiment, this embodiment was applied to more than 60 excavation working faces in 13 mines and 14 wells within two years, involving power feeding equipment and chute belt conveyors from multiple manufacturers. The system also provides historical data query and test result verification functions, and the system data accuracy rate is above 96%.

[0168] An embodiment of the present invention further provides an electronic device, which includes but is not limited to:

[0169] Memory, used to store programs;

[0170] The processor is used to execute the program stored in the memory. When the processor executes the program stored in the memory, the processor is used to execute the above-mentioned method for analyzing the excavation efficiency of the excavation working face.

[0171] The processor and the memory may be connected via a bus or other means.

[0172] The memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs, such as the method described in the embodiments of the present invention. The processor implements the above method by executing the non-transitory software programs and instructions stored in the memory.

[0173] The memory may include a program storage area and a data storage area, wherein the program storage area may store an operating system and application programs required for at least one function; the data storage area may store and execute the above method. In addition, the memory may include a high-speed random access memory, and may also include a non-transitory memory, such as at least one disk storage device, a flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory may optionally include a memory remotely located relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0174] The non-transitory software program and instructions required to implement the above-mentioned terminal selection method are stored in the memory, and when executed by one or more processors, the above-mentioned method is executed.

[0175] An embodiment of the present invention further provides a storage medium storing computer-executable instructions, wherein the computer-executable instructions are used to execute the above method.

[0176] In one embodiment, the storage medium stores computer-executable instructions that are executed by one or more control processors.

[0177] The embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, i.e., they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of this embodiment.

[0178] Those skilled in the art will appreciate that all or some of the steps and systems in the method disclosed above can be implemented as software, firmware, hardware, and appropriate combinations thereof. Some physical components or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, and the computer-readable medium can include computer storage media (or non-transitory media) and communication media (or temporary media). As known to those skilled in the art, the term computer storage media is included in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data) and is volatile and non-volatile, removable, and non-removable. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory, or other memory technology, CD-ROM, digital versatile disks (DVD), or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage, or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, as is well known to those skilled in the art, communication media typically includes computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0179] Embodiments of the present invention are described herein, including preferred embodiments known to the inventor for performing the present invention. After reading the above description, variations of these described embodiments will become apparent to those skilled in the art. The inventors expect that the skilled person will adopt such variations as appropriate, and the inventors intend to practice the embodiments of the present invention in a manner different from that specifically described herein. Therefore, as permitted by applicable law, the scope of the present invention includes all modifications and equivalents of the subject matter recited in the claims appended hereto. In addition, the scope of the present invention encompasses any combination of the above-mentioned elements in all possible variations thereof, unless otherwise indicated herein or otherwise clearly contradicted by the context.

Claims

1. A method for analyzing the excavation efficiency of an excavation working face, characterized in that: include: Obtain historical data of tunneling equipment and conveyor belt conveyors; According to the historical data, a production time set of the excavation working face is obtained; Obtaining the actual cutting time of the excavation working face according to the production time set of the excavation working face; Obtain excavation footage and working mode data; The excavation efficiency of the excavation working face is obtained according to the production time set, the actual cutting time, the excavation footage, and the working mode data.

2. The method for analyzing the excavation efficiency of an excavation working face according to claim 1, characterized in that: The production time set includes: the production time period of the tunneling equipment, the production time period of the chute belt conveyor, and the production time of the tunneling working face; The production time set of the excavation working face obtained according to the historical data includes: If the historical current data of the tunneling equipment is less than or equal to a preset first current ratio of the rated current of the tunneling equipment, the historical current data is used as the first historical current data; if not, the historical current data is invalid data; If the historical current data of the chute belt conveyor is less than or equal to a preset second current ratio of the rated current of the chute belt conveyor, the historical current data is used as the second historical current data; if not, the historical current data is invalid data; Obtaining a production time period of the tunneling equipment according to the first historical current data; Obtaining a production time period of the chute belt conveyor according to the second historical current data; The production time of the excavation working face is obtained according to the production time period of the excavation equipment and the production time period of the chute belt conveyor.

3. The method for analyzing the excavation efficiency of an excavation working face according to claim 2, characterized in that: The production time period of the tunneling equipment includes: the production start time of the tunneling equipment and the production end time of the tunneling equipment; the production time period of the tunneling equipment obtained according to the first historical current data includes: In the first historical current data, according to the timestamps from beginning to end, when the current corresponding to a timestamp is greater than 0 and the current quality stamp corresponding to the timestamp is Good and the current corresponding to the previous timestamp is 0, the timestamp is the production start time of the tunneling equipment; In the first historical current data, according to the timestamps from the back to the front, when the current corresponding to a timestamp is greater than 0 and the current quality stamp corresponding to the timestamp is Good and the current corresponding to the next timestamp is 0, the next timestamp after the timestamp is the production end time of the tunneling equipment; The production time period of the chute belt conveyor includes: the production start time of the chute belt conveyor and the production end time of the chute belt conveyor; The production time period of the chute belt conveyor obtained according to the second historical current data includes: In the second historical current data, according to the timestamps from the beginning to the end, when the current corresponding to a timestamp is greater than 0 and the current quality stamp corresponding to the timestamp is Good, and the current corresponding to the previous timestamp is 0, the timestamp is the production start time of the chute belt conveyor; In the second historical current data, according to the timestamps from back to front, when the current corresponding to a certain timestamp is greater than 0 and the current quality stamp corresponding to the timestamp is Good and the current corresponding to the next timestamp is 0, the next timestamp after the timestamp is the production end time of the chute belt conveyor.

4. The method for analyzing the excavation efficiency of an excavation working face according to claim 2, characterized in that: The obtaining of the production time of the excavation working face according to the production time period of the excavation equipment and the production time period of the chute belt conveyor includes: Obtaining the production start time of the excavation working face according to the production start time of the excavation equipment and the production start time of the chute belt conveyor, including: taking the latest timestamp of the production start time of the excavation equipment and the production start time of the chute belt conveyor, determining whether the latest timestamp is not earlier than a preset latest start timestamp, and if so, using the latest timestamp as the production start time of the excavation working face; If not, determining whether the tunneling equipment or the chute belt conveyor has experienced a shutdown phenomenon within a preset time period starting from the production start time of the tunneling working face; and if so, continuing to obtain the production time period of the tunneling equipment based on the first historical current data and the production time period of the chute belt conveyor based on the second historical current data; If not, the production start time of the current excavation working face is used as the production time of the excavation working face; Obtaining the production end time of the excavation working face according to the production end time of the excavation equipment and the production end time of the chute belt conveyor, including: taking the earliest timestamp of the production end time of the excavation equipment and the production end time of the chute belt conveyor, determining whether the earliest timestamp is no later than the preset latest end timestamp, and if so, using the earliest timestamp as the production end time of the excavation working face; If not, determining whether both the tunneling equipment and the chute belt conveyor are in production within a preset time period starting from the production end time of the tunneling working face; and if so, continuing to obtain the production time period of the tunneling equipment based on the first historical current data and the production time period of the chute belt conveyor based on the second historical current data; If not, the production end time of the current excavation working face is used as the production time of the excavation working face.

5. The method for analyzing the excavation efficiency of an excavation working face according to claim 1, characterized in that: The obtaining of the actual cutting duration of the excavation working face according to the production time set of the excavation working face comprises: Obtaining the current of the tunneling equipment during the production time period according to the production time period of the tunneling equipment; Obtaining a valid time period set based on the production time period of the tunneling equipment and the current of the tunneling equipment within the production time period, including: within the production time period of the tunneling equipment, dividing the current of the tunneling equipment within the production time period into production current time periods according to preset time periods; and aggregating the production current time periods that meet the valid conditions into the valid time period set; wherein the valid conditions include: the difference between the current within the production current time period and the minimum current is greater than a stability limit, the minimum current is the minimum current within the production time period, the maximum current is the maximum current within the production time period, and the stability limit is obtained based on the maximum current and the minimum current; The actual cutting duration of the excavation working face is obtained according to the effective time period set.

6. The method for analyzing the excavation efficiency of an excavation working face according to claim 1, characterized in that: The excavation efficiency of the excavation working face obtained according to the production time set, the actual cutting time, the excavation footage, and the working mode data includes: Obtaining a cutting efficiency based on the actual cutting time and the production time set, specifically, cutting efficiency = actual cutting time / production time period of the tunneling equipment, wherein the production time set includes the production time period of the tunneling equipment; According to the actual cutting time and the excavation footage, the per-meter time is obtained, specifically, per-meter time = actual cutting time / excavation footage; According to the production time set and the working mode data, the startup efficiency is obtained, specifically startup efficiency = production time of the excavation working face / planned duration of the day, wherein the planned duration of the day is obtained according to the working mode data; The excavation efficiency of the excavation working face is obtained according to the cutting efficiency, the time per meter, and the startup efficiency.

7. The method for analyzing the excavation efficiency of an excavation working face according to claim 6, characterized in that: The excavation efficiency of the excavation working face obtained according to the cutting efficiency, the time per meter, and the startup efficiency includes: According to the preset proportions, the cutting efficiency, the time per meter, and the startup efficiency are weighted and calculated to obtain the excavation efficiency of the excavation working face. The formula is as follows: By 掘 =Z1·P 截割效率 +Z2·P 单米时长 +Z3·P 开机效率 Among them, P 截割效率 is the cutting efficiency, P 单米时长 is the single meter duration, P 开机效率 is the power-on efficiency, Per 掘 is the excavation efficiency of the excavation working face, the proportions of the cutting efficiency, the single-meter time, and the startup efficiency are Z1, Z2, and Z3 respectively, and Z1, Z2, and Z3 are all preset values, and Z1+Z2+Z3=100%.

8. A system for analyzing the excavation efficiency of an excavation working face, characterized in that: include: A control module, configured to execute the method according to any one of claims 1 to 7, and obtain the corresponding excavation efficiency of the excavation working face according to a user instruction; The interactive module is connected to the control module, receives the user instruction, sends the user instruction to the control module, receives the excavation efficiency of the excavation working face sent by the control module and displays it.

9. An electronic device, characterized in that: include: Memory, used to store programs; A processor, configured to execute the program stored in the memory. When the processor executes the program stored in the memory, the processor is configured to execute the method according to any one of claims 1 to 7.

10. A storage medium, characterized in that: Computer-executable instructions are stored, and the computer-executable instructions are used to execute the method according to any one of claims 1 to 7.

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