Working condition identification and work efficiency analysis method for rotary drilling machine

Abstract

The invention discloses a working condition identification and working efficiency analysis method for a rotary drilling machine, which comprises the following steps of: 1, acquiring working parameters of a power head of the rotary drilling machine from hole opening to hole finishing in a working period in real time; 2, based on the collected working parameters, the working state of the rotary drilling machine is recognized in real time, and the real-time hole forming depth is calculated; and 3, analyzing the total working time, the effective working time, the pure drilling working time, the total effect, the effective effect and the pure drilling effect of the rotary drilling machine according to the working state of the rotary drilling machine in one working period and the real-time hole forming depth. According to the method, the working efficiency in each working condition state can be accurately recognized and analyzed in a complex construction environment by collecting and processing key data, meanwhile, a scientific basis is provided for construction decision making based on working efficiency analysis of an algorithm, and systematicness and accuracy are guaranteed; reference and improvement suggestions are provided for subsequent similar construction, and hysteresis and subjectivity of traditional manual recording and postmortem analysis are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge pile foundation hole forming, and more specifically, to a method for identifying the working condition of a rotary drilling rig and analyzing its working efficiency. Background Art

[0002] The main piers of bridge projects usually adopt pile foundations. The pile foundations have a large number of drill holes, large diameters, and extra-long hole depths. The number of on-site drilling rigs and the arrangement of process schedules directly determine the cost of the pile foundation project and the allocation of human resources. This requires the calculation and statistics of the drilling status and drilling efficiency of the drilling rigs to provide a decision-making basis for on-site construction.

[0003] During the drilling process of the rotary drilling rig, due to the large differences in the properties of the rock and soil in different strata, the working environment of the drill bit is constantly changing, the drilling conditions are constantly changing, and the drilling efficiency varies greatly. Therefore, it is necessary to manually analyze the drilling status of the drilling rig on site and calculate the drilling efficiency. However, due to the harsh conditions at the drilling site, the complicated and diverse drilling procedures, and the uneven construction personnel on site, it is easy to cause the drilling efficiency statistics to be untimely through manual calculation and analysis, and even fraud, which cannot timely and accurately reflect the actual situation of the construction site.

[0004] In response to this situation, we have conducted research on drilling condition identification for drilling process status monitoring, analyzed the status characteristics of the drilling system, and specifically identified the drilling process without relying on on-site employees. This provides a decision-making basis for the scheduling of subsequent process steps and drilling rig configuration of pile foundation projects, which is of great significance to ensuring drilling safety, improving drilling efficiency, and reducing drilling costs. Summary of the invention

[0005] Another object of the present invention is to provide a method for identifying and analyzing the working conditions of a rotary drilling rig, which can be used to accurately identify and analyze the working efficiency of the rotary drilling rig under each working condition.

[0006] In order to achieve these purposes and other advantages according to the present invention, a method for identifying working conditions and analyzing working efficiency of a rotary drilling rig is provided, comprising: Step 1: Real-time collection of working parameters of the power head of the rotary drilling rig from hole opening to hole completion within a working cycle; Step 2: Based on the collected working parameters, the working status of the rotary drill is identified in real time and the real-time hole depth is calculated. The working status includes the hole opening status, the final hole status, the drill rod adding status, the pure drilling status and the stagnant status; Step 3: Analyze the total working time, effective working time, pure drilling working time, total efficacy, effective efficacy and pure drilling efficacy of the rotary drilling rig according to the working status of the rotary drilling rig within a working cycle and the real-time hole depth.

[0007] Preferably, the working parameters of the power head in step 1 include displacement parameters and inclination parameters, and the working parameters are acquired through a data acquisition system, and the data acquisition system includes: A laser distance measuring sensor is fixed to the bottom of the saddle frame of the rotary drilling rig, and a reflector is welded to the bottom of the guide frame of the rotary drilling rig, and the reflector is used to reflect the laser emitted by the laser distance measuring sensor; The inclination sensor is installed on the guide frame and is used to monitor the inclination data of the power head.

[0008] Preferably, the data acquisition system also includes a PLC central control system, a 4G gateway and a cloud platform, which interact with the laser ranging sensor and the inclination sensor for data. After the PLC central control system receives the data transmitted by the laser ranging sensor and the inclination sensor and performs logical calculations, the calculated data is sent to the cloud platform through the 4G gateway.

[0009] Preferably, step 2 specifically includes: smoothing the collected working parameters, and obtaining the smoothed working parameters within 60 seconds before the current moment every 10 seconds, for real-time identification of the working state of the rotary drilling rig; The opening state is identified by the following formula: (1) (2) In the above formula: z is the inclination parameter of the power head, the unit is °; The threshold time for the power head tilt angle to be greater than 90°, in seconds. =300; ΔT is the time that the power head inclination angle is continuously greater than 90°, in S; When the inclination angle z satisfies formula (1), ΔT satisfies formula (2), and the calculated real-time hole depth is greater than the designed hole depth, the rotary drilling rig is in the final hole state; real-time hole depth = drill rod length × the number of drill rods currently added + drill string displacement length; drill string displacement length = the distance between the laser ranging sensor and the top of the casing - the distance between the laser ranging sensor and the bottom of the power head; Perform linear regression fitting on the working parameters obtained within 60 seconds before the current moment to obtain the regression equation and obtain the slope of the regression equation and the coefficient of determination The pure drilling state, drill rod addition state and stagnant state of the rotary drilling rig are calculated according to the slope of the regression equation. and the coefficient of determination Judge and identify, specifically: when ,and At this time, the rotary drilling rig is currently in the pure drilling state; when ,and At the time, the rotary drilling rig was currently at a standstill; when ,and At this time, the rotary drilling rig is currently in the state of adding drill rods.

[0010] Preferably, in step 2: When the rotary drill is in the hole-opening state, its actual hole-forming depth is 0; When the rotary drilling rig is in the state of adding drill rods, its real-time hole depth = drill rod length × the number of drill rods currently added; When the rotary drill is in the pure drilling state, its actual hole depth is the same as the hole depth in the final hole state; When the rotary drilling rig is in a stagnant state, its actual hole depth is the hole depth of the previous working condition.

[0011] Preferably, in step three: Total working time = final hole completion time - hole opening start time; Effective working time = total working time - accumulated time in stagnation; Pure drilling working time = effective working time - cumulative time in the state of adding drill rods; Total efficiency = hole depth in final hole state / total working time; Effective efficacy = hole depth in final hole state / effective working time; Pure diamond efficacy = total efficacy / pure diamond working time.

[0012] Preferably, in step three, based on the calculated real-time drilling depth and the corresponding relationship between the drilling depth and the surveyed formation depth, the time the rotary drill is in each formation can be obtained to further analyze the total efficiency, effective efficiency and pure drilling efficiency of the rotary drill in different formations.

[0013] The present invention has at least the following beneficial effects: 1. The present invention designs a method for identifying and analyzing the working conditions of a rotary drilling rig. By collecting and processing key data, the working efficiency under each working condition can be accurately identified and analyzed in a complex construction environment. At the same time, the algorithm-based working efficiency analysis provides a scientific basis for construction decision-making, ensuring systematicity and accuracy; it provides reference and improvement suggestions for subsequent similar construction, avoiding the lag and subjectivity of traditional manual recording and post-analysis; 2. The present invention collects, processes and transmits data in real time through the data acquisition system, which solves the problem that traditional working condition monitoring relies on manual records and lacks automated data processing and transmission capabilities, resulting in low data processing efficiency and failure to timely reflect the actual situation on the construction site. It improves the overall level of intelligence and automation of construction and meets the requirements of modern engineering for university construction and precise management. 3. The present invention can timely discover problems that affect construction efficiency through real-time monitoring and work efficiency analysis of various working states of the drilling rig, guide on-site personnel to optimize construction parameters, and thus improve overall construction efficiency.

[0014] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the arrangement structure of the data acquisition system of the present invention; Figure 2 It is a schematic diagram of the framework structure of the data acquisition system of the present invention; Figure 3 It is a schematic flow chart of the method for identifying the working condition and analyzing the working efficiency of the rotary drilling rig of the present invention; Figure 4 A trend diagram of the data acquired by the data acquisition system during the actual construction process of the present invention over time; Figure 5 for Figure 4 The curve diagram of some data after fitting; Description of the Figures in the Specification: 1. Laser ranging sensor, 2. Reflector, 3. Liftable saddle frame, 4. Guide frame, 5. Power head, 6. Inclination sensor, 7. Casing, 8. Drill rod. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0017] It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] like Figure 1-5 As shown, the present invention provides a method for identifying working conditions and analyzing working efficiency of a rotary drilling rig, comprising: Step 1: Real-time acquisition of the working parameters of the power head of the rotary drilling rig from hole opening to hole completion within a working cycle. The working parameters include displacement parameters and inclination parameters. The working parameters are acquired through a data acquisition system, such as Figure 1As shown, the data acquisition system includes: A laser distance measuring sensor is fixed to the bottom of the saddle frame of the rotary drilling rig, and a reflector is welded to the bottom of the guide frame of the rotary drilling rig, and the reflector is used to reflect the laser emitted by the laser distance measuring sensor; An inclination sensor is mounted on the guide frame and is used to monitor the inclination data of the power head; Step 2: Use Savitzky-Golay smoothing algorithm to smooth the collected working parameters, and obtain the smoothed working parameters within 60 seconds before the current moment every 10 seconds, which are used to identify the working status of the rotary drill in real time and calculate the real-time hole depth. The working status includes the hole opening state, the final hole state, the drill rod adding state, the pure drilling state and the stagnant state; Among them, Figure 3 As shown, the opening state is identified by the following formula: (1) (2) In the above formula: z is the inclination parameter of the power head, the unit is °; The threshold time for the power head tilt angle to be greater than 90°, in seconds. =300; ΔT is the time that the power head inclination angle is continuously greater than 90°, in S; When the rotary drill is in the hole-opening state, its actual hole-forming depth is 0; When the inclination angle z satisfies formula (1), ΔT satisfies formula (2), and the calculated real-time hole depth is greater than the designed hole depth, the rotary drilling rig is in the final hole state; The real-time hole depth in the final hole state = drill rod length × the number of drill rods currently added + drill string displacement length; drill string displacement length = the distance between the laser ranging sensor and the top of the casing - the distance between the laser ranging sensor and the bottom of the power head; Perform linear regression fitting on the working parameters obtained within 60 seconds before the current moment to obtain the regression equation and obtain the slope of the regression equation and the coefficient of determination The pure drilling state, drill rod addition state and stagnant state of the rotary drilling rig are calculated according to the slope of the regression equation. and the coefficient of determination Judge and identify, using the slope of the regression line and the coefficient of determination To evaluate the changing trend of data and the quality of fitting, the slope reflects the direction and speed of data change, while The value measures the degree of explanation of the fitted line to the data. By analyzing these two parameters, the remaining three real-time working states of the rotary drilling rig can be further inferred, specifically: when ,and The rotary drill is currently in the pure drilling state; its actual hole depth is the same as the hole depth in the final hole state; when ,and At this time, the rotary drilling rig is currently in a stagnant state; in the stagnant state, the drill bit does not interact with the formation, that is, its actual hole depth is the hole depth of the previous working condition; ,and At this time, the rotary drilling rig is currently in the state of adding drill rods; its actual hole depth = drill rod length × the number of drill rods currently added; Step 3: Analyze the total working time, effective working time, pure drilling working time, total efficacy, effective efficacy and pure drilling efficacy of the rotary drilling rig according to the working status of the rotary drilling rig in one working cycle and the real-time hole depth; Among them, total working time = final hole completion time - hole opening start time; total working time can help construction managers evaluate the overall progress of the project; Effective working time = total working time - accumulated time in stagnation; by comparing total working time with effective working time, the efficiency of the construction process can be evaluated and any abnormal conditions that affect the construction progress can be identified; Pure drilling working time = effective working time - accumulated time in the state of adding drill rods; the time and proportion of the interaction between the drill bit and the formation in a working cycle can be obtained through the pure drilling working time; Total efficiency = hole depth in final hole state / total working time; Effective efficacy = hole depth in final hole state / effective working time; Pure drilling efficiency = total efficiency / pure drilling working time; total efficiency, effective efficiency and pure drilling efficiency can be used to analyze the working performance of drilling rigs under different geological conditions and provide a reference for future construction.

[0019] In the above technical scheme, the present invention first uses the data acquisition system to collect the working parameters of the power head within a cycle to replace manual collection and statistics, thereby ensuring the accuracy of the collected data. Since the original data of the laser rangefinder sensor is affected by noise, it shows obvious jaggedness and irregular fluctuations. In order to improve the data quality, the Savitzky-Golay smoothing algorithm is used to process the working parameters. The smoothed data is smoother and more coherent, which provides a reliable basis for subsequent regression analysis and ensures the accuracy of subsequent working condition identification and work efficiency analysis. The next step is the working condition identification of the rotary drilling rig, wherein the hole-opening state is the beginning of a working cycle, and the hole-opening state is often accompanied by changes in the inclination angle. Therefore, the inclination angle is used to determine whether the rotary drilling rig is in the hole-opening state. The final hole state is the end of a working cycle, which is similar to the hole-opening state and also needs to be judged by the change in the inclination angle. The depth of the hole exceeds the designed hole depth, so the inclination angle and real-time hole-forming are used. The method of combining the working state identification and working efficiency analysis of the rotary drilling rig with the working state depth is used to determine whether it is in the final hole state. After multiple field tests and analyses, it is determined that the linear regression fitting method can accurately determine the pure drilling state, the drill rod adding state and the stagnant state of the rotary drilling rig. Finally, based on the working state and the real-time hole depth, the work efficiency is analyzed according to the formula, which provides strong support for construction optimization and decision-making. The present invention designs a working condition identification and work efficiency analysis method for the rotary drilling rig. By collecting and processing key data through the data acquisition system, the work efficiency under each working condition can be accurately identified and analyzed in a complex construction environment. At the same time, the work efficiency analysis based on the algorithm provides a scientific basis for construction decision-making and ensures systematicness and accuracy. It provides reference and improvement suggestions for subsequent similar construction, avoids the lag and subjectivity of traditional manual recording and post-analysis, and through real-time monitoring and work efficiency analysis of each working state of the drilling rig, it can timely discover problems affecting construction efficiency, guide on-site personnel to optimize construction parameters, and thus improve overall construction efficiency. Hole opening is an instantaneous state in engineering, representing the start of the rotary drill's work, until the final hole represents the end of the rotary drill's work, which is a complete rotary drill drilling cycle. However, in data analysis, there will be a lot of data that meet the hole opening state recognition state in a complete rotary drill cycle. Therefore, this paper uses the first hole opening data to the first final hole data as a complete cycle, and the hole opening judgment within the complete working cycle is not effective.

[0020] In another technical solution, Figure 2 As shown, the data acquisition system also includes a PLC central control system, a 4G gateway and a cloud platform, which interact with the laser ranging sensor and the inclination sensor for data. After the PLC central control system receives the data transmitted by the laser ranging sensor and the inclination sensor and performs logical calculations, the calculated data is sent to the cloud platform through the 4G gateway.

[0021] In this technical solution, the present invention collects, processes and transmits data in real time through a data acquisition system, which solves the problem that traditional working condition monitoring relies on manual records and lacks automated data processing and transmission capabilities, resulting in low data processing efficiency and inability to timely reflect the actual situation on the construction site. It improves the overall intelligence and automation level of construction and meets the requirements of modern engineering for university construction and precise management.

[0022] In another technical solution, in step three, the time the rotary drill rig is in each formation can be obtained based on the calculated real-time drilling depth and the corresponding relationship between the drilling depth and the surveyed formation depth, so as to further analyze the total efficiency, effective efficiency and pure drilling efficiency of the rotary drill rig in different formations.

[0023] In the present technical solution, during the drilling of the entire hole, the drill rig will enter different strata. In order to obtain the working efficiency of each stratum more accurately, in the present invention, based on the correspondence between the hole depth and the depth of the surveyed stratum map, the time when the drill rig enters each stratum can be obtained, and the corresponding total stratum efficiency, effective efficiency and pure drilling efficiency can be calculated based on the time.

[0024] In the multiple hole-opening constructions on site, a complete hole-opening construction is selected as an example to illustrate the judgment basis of the present invention for identifying the working condition of the rotary drilling rig: Figure 4 The data collected by the data acquisition system during the complete drilling construction cycle, after data analysis and multiple on-site confirmations, it was found that the working status of the rotary drilling rig can be reflected by the slope, that is, when the slope of the curve is downward, it was confirmed on-site that the rotary drilling rig is in a pure drilling state; when the slope is upward, it was confirmed on-site that the rotary drilling rig is adding drill rods; when the curve remains horizontal, the rotary drilling rig is in a stagnant state; In order to obtain the status information of pure drilling, stagnation and drill pipe addition in real time in practical applications, the present invention adopts curve fitting to Figure 4 The data acquired within a certain 60s of each working state are fitted, and it is found that when the rotary drill is in the pure drilling state, the slope of the fitting curve is negative; when the drill rod is added, the slope of the fitting curve is positive; when it is stagnant, the slope of the fitting curve is close to zero. Considering the volatility of the data acquired by the sensor, Figure 5 As shown, the present invention sets a judgment interval for the slope of the fitting curve, that is, when the slope of the fitting curve is within the range of ±0.003, the rotary drilling rig is considered to be in a stagnant state; if the slope of the fitting curve exceeds 0.003, it is considered that the drill rod is being added; and when the slope of the fitting curve is lower than -0.003, it indicates that it is in a pure drilling state.

[0025] also, It is used to verify the credibility of the fitting results. The higher the value, the higher the reliability of the slope of the fitting curve and the smaller the variance. Therefore, in order to ensure that the fitting curve can accurately judge the working state of the rotary drilling rig, the present invention sets The value must be greater than the limit of 0.9 to ensure that the fitted curve has sufficient confidence.

[0026] Embodiment 1 The rotary drilling rig working condition identification and efficacy analysis method of the present invention is applied to the complete drilling cycle of a certain project 161 platform-No. 2 drilling rig-No. 4 pile, wherein the drilling time is 12:00 noon on May 30, the final drilling time is 11:00 pm on June 4, the drilling depth is 133 meters, the stagnant state accumulates 11 hours, and the pure drilling state accumulates 90 hours; The total working time is calculated to be 131h, the total efficiency is 1.015m / h, the effective efficiency is 1.108m / h, and the pure drilling efficiency is 1.478m / h.

[0027] Through the above analysis method, the present invention can provide accurate work efficiency evaluation and provide strong support for construction optimization and decision-making.

[0028] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A method for identifying working conditions and analyzing working efficiency of a rotary drilling rig, characterized in that: include: Step 1: Real-time collection of working parameters of the power head of the rotary drilling rig from hole opening to hole completion within a working cycle; Step 2: Based on the collected working parameters, the working status of the rotary drill is identified in real time and the real-time hole depth is calculated. The working status includes the hole opening status, the final hole status, the drill rod adding status, the pure drilling status and the stagnant status; Step 3: Analyze the total working time, effective working time, pure drilling working time, total efficacy, effective efficacy and pure drilling efficacy of the rotary drilling rig according to the working status of the rotary drilling rig within a working cycle and the real-time hole depth.

2. The method for identifying working conditions and analyzing working efficiency of a rotary drilling rig according to claim 1, characterized in that: The working parameters of the power head in step 1 include displacement parameters and inclination parameters, and the working parameters are obtained through a data acquisition system, and the data acquisition system includes: A laser distance measuring sensor is fixed to the bottom of the saddle frame of the rotary drilling rig, and a reflector is welded to the bottom of the guide frame of the rotary drilling rig, and the reflector is used to reflect the laser emitted by the laser distance measuring sensor; The inclination sensor is installed on the guide frame and is used to monitor the inclination data of the power head.

3. The method for identifying working conditions and analyzing working efficiency of a rotary drilling rig according to claim 2, characterized in that: The data acquisition system also includes a PLC central control system, a 4G gateway and a cloud platform, which interact with the laser ranging sensor and the inclination sensor for data. After the PLC central control system receives the data transmitted by the laser ranging sensor and the inclination sensor and performs logical calculations, the calculated data is sent to the cloud platform through the 4G gateway.

4. The method for identifying working conditions and analyzing working efficiency of a rotary drilling rig according to claim 3, characterized in that: Step 2 specifically includes: smoothing the collected working parameters, and obtaining the smoothed working parameters within 60 seconds before the current moment every 10 seconds, so as to identify the working status of the rotary drilling rig in real time; The opening state is identified by the following formula: (1) (2) In the above formula: z is the inclination parameter of the power head, the unit is °; The threshold time for the power head tilt angle to be greater than 90°, in seconds. =300; ΔT is the time that the power head inclination angle is continuously greater than 90°, in S; When the inclination angle z satisfies formula (1), ΔT satisfies formula (2), and the calculated real-time hole depth is greater than the designed hole depth, the rotary drilling rig is in the final hole state; real-time hole depth = drill rod length × the number of drill rods currently added + drill string displacement length; drill string displacement length = the distance between the laser ranging sensor and the top of the casing - the distance between the laser ranging sensor and the bottom of the power head; Perform linear regression fitting on the working parameters obtained within 60 seconds before the current moment to obtain the regression equation and obtain the slope of the regression equation and the coefficient of determination The pure drilling state, drill rod addition state and stagnant state of the rotary drilling rig are calculated according to the slope of the regression equation. and the coefficient of determination Judge and identify, specifically: when ,and At this time, the rotary drilling rig is currently in the pure drilling state; when ,and At the time, the rotary drilling rig was currently at a standstill; ,and At this time, the rotary drilling rig is currently in the state of adding drill rods.

5. The method for identifying working conditions and analyzing working efficiency of a rotary drilling rig according to claim 4, characterized in that: In step 2: When the rotary drill is in the hole-opening state, its actual hole-forming depth is 0; When the rotary drilling rig is in the state of adding drill rods, its real-time hole depth = drill rod length × the number of drill rods currently added; When the rotary drill is in the pure drilling state, its actual hole depth is the same as the hole depth in the final hole state; When the rotary drilling rig is in a stagnant state, its actual hole depth is the hole depth of the previous working condition.

6. The method for identifying working conditions and analyzing working efficiency of a rotary drilling rig according to claim 4, characterized in that: In step three: Total working time = final hole completion time - hole opening start time; Effective working time = total working time - accumulated time in stagnation; Pure drilling working time = effective working time - cumulative time in the state of adding drill rods; Total efficiency = hole depth in final hole state / total working time; Effective efficacy = hole depth in final hole state / effective working time; Pure diamond efficacy = total efficacy / pure diamond working time.

7. The method for identifying working conditions and analyzing working efficiency of a rotary drilling rig according to claim 6, characterized in that: In step three, based on the calculated real-time drilling depth and the corresponding relationship between the drilling depth and the surveyed formation depth, the time the rotary drill is in each formation can be obtained to further analyze the total efficiency, effective efficiency and pure drilling efficiency of the rotary drill in different formations.

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