Intelligent adjusting and conveying method for charging density of mixed emulsion explosive

Abstract

The application discloses a kind of mixed emulsion explosive charging density intelligent adjustment and conveying method, comprising the following steps: S1, parameter perception and data acquisition: through the flow sensor, temperature sensor, pressure sensor and position sensor installed on mixed emulsion explosive truck, respectively collect the delivery flow, temperature, delivery pressure of latex matrix, and borehole depth, aperture data, simultaneously obtain the rock blastability parameter of operation area rock by rock blastability detection module, all collected data are transmitted to control unit in real time.The application solves the problem that traditional charging density cannot intelligently adapt to rock characteristics, has low conveying efficiency and insufficient safety, improves the blasting effect and intrinsic safety level, and is suitable for intelligent charging operation of mixed emulsion explosive in open-pit mine site.

Description

Technical Field

[0001] This invention relates to the field of civil explosives technology, and in particular to a method for intelligent adjustment and delivery of the charge density of mixed emulsion explosives. Background Technology

[0002] In open-pit mine blasting operations, the quality of the charge in on-site mixed emulsion explosive trucks directly affects the blasting effect and operational safety. Traditional mixed emulsion explosive trucks have many drawbacks: the charging process relies on manual operation, which is labor-intensive and makes it impossible to accurately perceive key parameters such as charge height and density; the charge density is fixed and cannot be dynamically adjusted according to the rock's explosiveness, resulting in a mismatch between explosive energy and rock requirements, low blasting efficiency, and high explosive consumption per unit; during long-distance transportation, there is high resistance, uneven mixing of the latex matrix and sensitizer, and potential safety hazards.

[0003] While some existing technologies attempt to monitor charge parameters, they lack intelligent adjustment mechanisms for charge density and suffer from poor drag reduction and mixing effects during transport, failing to meet the requirements of smart mine construction for intelligent, efficient, and safe charging processes. Therefore, there is an urgent need for a method that can intelligently adjust and transport the charge density of mixed emulsion explosives to match rock characteristics, optimize the transport process, and ensure operational safety. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a method for intelligent adjustment and delivery of mixed emulsion explosive charge density.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A method for intelligent adjustment and delivery of the charge density of mixed emulsion explosives includes the following steps: S1. Parameter perception and data acquisition: The flow rate, temperature, pressure and position of the latex matrix are collected by the flow sensor, temperature sensor, pressure sensor and position sensor installed on the mixed emulsion explosive vehicle, as well as the borehole depth and diameter data. At the same time, the explosiveness parameters of the rock in the working area are obtained by the rock explosiveness detection module. All collected data are transmitted to the control unit in real time. S2. Density adjustment command generation: Based on the rock explosiveness parameters, latex matrix parameters and borehole parameters collected in S1, the control unit calculates the target charge density value by combining the preset explosive density and rock explosiveness matching model, and then generates the corresponding sensitizer flow rate adjustment command. The target charge density value ranges from 1.05 g / cm³ to 1.20 g / cm³. S3, Precise delivery and mixing of sensitizer: Based on the adjustment command generated by S2, the output flow of the sensitizer delivery pump is controlled by a high-precision mass flow meter to achieve a precise ratio of sensitizer to latex matrix. At the same time, a long-distance delivery drag reduction device is used to form a uniform lubricating film on the wall of the delivery tube to achieve layered delivery of latex matrix and sensitizer. The two are uniformly mixed at the end of the delivery tube by a static mixer. S4. Monitoring and Closed-Loop Adjustment of Conveying Process: The charging height, density and detonation velocity of the mixed explosive are monitored in real time through the charging parameter detection module. When the actual charging density deviates from the target density by more than ±0.02g / cm³, the control unit automatically corrects the sensitizer flow rate adjustment command. At the same time, the safety monitoring module monitors parameters such as conveying pressure and temperature. When an abnormality occurs, an alarm is immediately triggered and the relevant equipment is shut down.

[0006] Preferably, in step S1, the flow sensor includes an ultrasonic high-viscosity material flow meter for latex matrix metering and a mass flow meter for sensitizer metering, with a measurement accuracy of not less than 0.25%.

[0007] Preferably, in step S1, the rock blastability parameters include rock compressive strength, porosity, and wave impedance, which are obtained through preset detection sensors or by importing historical blasting data.

[0008] Preferably, in step S2, the explosive density and rock explosiveness matching model is trained by a machine learning algorithm, with the input parameters being the rock explosiveness parameter and the borehole size, and the output parameters being the optimal charge density and the corresponding sensitizer ratio coefficient.

[0009] Preferably, in step S3, the long-distance conveying drag reduction device consists of a 304 stainless steel inner ring and an outer ring, with a 2mm gap between the inner and outer rings. The inner ring surface has a groove, and the lubricating fluid is pumped into the gap by a high-pressure plunger pump and then diverted through the groove to form a continuous lubricating film.

[0010] Preferably, in step S3, the sensitizer delivery pump is a screw pump, and the control unit controls the pump speed through a PID closed-loop regulation algorithm to achieve precise control of the sensitizer flow rate, with a flow rate adjustment range of 0~500L / h.

[0011] Preferably, in step S4, the charge density is calculated through the coordinated measurement of a pressure sensor and a flow sensor, specifically by deriving the density value based on the mixed flow rate of the latex matrix and the sensitizer and the charge volume in the borehole.

[0012] Preferably, in step S4, the abnormal situations monitored by the safety monitoring module include overpressure during delivery, overtemperature during delivery, material interruption, interruption of sensitizer flow, and equipment failure.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention achieves precise matching of explosive energy and rock explosiveness by intelligently adjusting the charge density, reducing explosive consumption by 25% and increasing the blasting volume per meter by 13%, thus significantly improving the overall blasting efficiency.

[0014] 2. This invention employs a long-distance conveying drag reduction device, which forms a uniform lubricating film on the wall of the conveying tube, reducing the conveying resistance and realizing the layered conveying of the latex matrix and sensitizer and uniform mixing at the end, ensuring the stability and safety of long-distance conveying, with a conveying distance of up to 15 meters or more.

[0015] 3. This invention uses full-process parameter sensing and closed-loop control to monitor key parameters such as charge density and detonation velocity in real time, and promptly corrects and adjusts the commands. The charge density control error does not exceed ±0.02g / cm³, thus improving the stability of charge quality.

[0016] 4. This invention integrates a remote monitoring and safety alarm system, realizing remote visual control of the charging process. The number of operators has been reduced from 6 to 1, reducing labor intensity, improving intrinsic safety, and laying the foundation for the construction of smart mines. Attached Figure Description

[0017] Figure 1 This is a flowchart of a method for intelligent adjustment and delivery of mixed emulsion explosive charge density proposed in this invention. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Reference Figure 1 A method for intelligent adjustment and delivery of mixed emulsion explosive charge density, comprising the following steps: S1. Parameter perception and data acquisition: The flow rate, temperature, pressure and position of the latex matrix are collected by the flow sensor, temperature sensor, pressure sensor and position sensor installed on the mixed emulsion explosive vehicle, as well as the borehole depth and diameter data. At the same time, the explosiveness parameters of the rock in the working area are obtained by the rock explosiveness detection module. All collected data are transmitted to the control unit in real time. S2. Density adjustment command generation: Based on the rock explosiveness parameters, latex matrix parameters and borehole parameters collected in S1, the control unit calculates the target charge density value by combining the preset explosive density and rock explosiveness matching model, and then generates the corresponding sensitizer flow rate adjustment command. The target charge density value ranges from 1.05 g / cm³ to 1.20 g / cm³. S3, Precise delivery and mixing of sensitizer: Based on the adjustment command generated by S2, the output flow of the sensitizer delivery pump is controlled by a high-precision mass flow meter to achieve a precise ratio of sensitizer to latex matrix. At the same time, a long-distance delivery drag reduction device is used to form a uniform lubricating film on the wall of the delivery tube to achieve layered delivery of latex matrix and sensitizer. The two are uniformly mixed at the end of the delivery tube by a static mixer. S4. Monitoring and Closed-Loop Adjustment of Conveying Process: The charging height, density and detonation velocity of the mixed explosive are monitored in real time through the charging parameter detection module. When the actual charging density deviates from the target density by more than ±0.02g / cm³, the control unit automatically corrects the sensitizer flow rate adjustment command. At the same time, the safety monitoring module monitors parameters such as conveying pressure and temperature. When an abnormality occurs, an alarm is immediately triggered and the relevant equipment is shut down.

[0020] In step S1, the flow sensor includes an ultrasonic high-viscosity material flow meter for latex matrix metering and a mass flow meter for sensitizer metering, with a measurement accuracy of not less than 0.25%.

[0021] In step S1, the rock blastability parameters include rock compressive strength, porosity, and wave impedance, which are obtained through preset detection sensors or by importing historical blasting data.

[0022] In step S2, the explosive density and rock explosiveness matching model is trained by a machine learning algorithm. The input parameters are the rock explosiveness parameters and the borehole size, and the output parameters are the optimal charge density and the corresponding sensitizer ratio coefficient.

[0023] In step S3, the long-distance conveying drag reduction device consists of an inner ring and an outer ring made of 304 stainless steel. There is a 2mm gap between the inner ring and the outer ring. The inner ring surface is provided with grooves. After the lubricating fluid is pumped into the gap by a high-pressure plunger pump, it is diverted through the grooves to form a continuous lubricating film.

[0024] In step S3, the sensitizer delivery pump is a screw pump. The control unit controls the pump speed through a PID closed-loop regulation algorithm to achieve precise control of the sensitizer flow rate, with a flow rate adjustment range of 0~500L / h.

[0025] In step S4, the charge density is calculated through the coordinated measurement of the pressure sensor and the flow sensor, specifically by deriving the density value based on the mixed flow rate of the latex matrix and the sensitizer and the charge volume in the borehole.

[0026] In step S4, the abnormal situations monitored by the safety monitoring module include overpressure during conveying, overtemperature during conveying, material interruption, interruption of sensitizer flow, and equipment failure.

[0027] Working principle: In step S1, parameter sensing and data acquisition: An ultrasonic high-viscosity material flow meter, mass flow meter, temperature sensor, pressure sensor, and position sensor are installed on the mixed emulsion explosive vehicle to collect real-time data on the latex matrix's flow rate, temperature, and pressure, as well as the borehole depth and diameter. Simultaneously, a rock explosiveness detection module acquires parameters such as the compressive strength, porosity, and wave impedance of the rock in the working area. All collected data is transmitted to the control unit via a PLC controller, with a data transmission delay of no more than 1 second. The ultrasonic high-viscosity material flow meter is used for latex matrix metering, with a measurement accuracy of no less than 0.25%; the mass flow meter is used for sensitizer metering to ensure accurate proportioning.

[0028] In step S2, the density adjustment command is generated: the control unit has a built-in model that matches the explosive density with the rock explosiveness, trained using a machine learning algorithm. This model takes rock explosiveness parameters, latex matrix parameters, and borehole parameters as inputs and outputs the optimal charge density and the corresponding sensitizer ratio coefficient. Based on the data collected in S1, the control unit calculates the target charge density value, ranging from 1.05 g / cm³ to 1.20 g / cm³, and then generates a sensitizer flow rate adjustment command to ensure precise matching between the explosive energy and the rock explosiveness.

[0029] In step S3, the sensitizer is precisely delivered and mixed: Based on the adjustment command generated in S2, the control unit controls the speed of the sensitizer delivery screw pump through a PID closed-loop control algorithm, achieving precise control of the sensitizer flow rate, with a flow rate adjustment range of 0~500L / h. Simultaneously, a long-distance delivery drag reduction device is activated. This device consists of a 304 stainless steel inner ring and an outer ring, with a 2mm gap between them. Grooves are formed on the surface of the inner ring. Lubricating fluid, pumped into the gap by a high-pressure plunger pump, is then diverted through the grooves to form a continuous lubricating film on the delivery hose wall, reducing delivery resistance. The latex matrix and sensitizer are transported within the hose via a layered delivery method, and uniform mixing is achieved at the end of the hose using a static mixer to ensure effective mixing.

[0030] In step S4, the conveying process is monitored and adjusted in a closed loop: the charge height, density, and detonation velocity of the mixed explosive are monitored in real time by the charge parameter detection module. When the actual charge density deviates from the target density by more than ±0.02 g / cm³, the control unit automatically corrects the sensitizer flow adjustment command to achieve closed-loop control. Simultaneously, the safety monitoring module monitors the conveying pressure (preset threshold 1.3 MPa), temperature (preset threshold 85℃), material shortage, sensitizer flow interruption, and equipment malfunctions in real time. In case of any abnormality, local alarms, platform control alarms, and SMS alarms are immediately triggered, and relevant equipment is shut down to ensure operational safety. Furthermore, all data is transmitted to a remote data management platform via a 5G communication module, supporting real-time viewing, parameter setting, and fault alarm reception on PC clients and mobile terminals.

[0031] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for intelligent adjustment and conveying of the charge density of mixed emulsion explosives, characterized in that, Includes the following steps: S1. Parameter perception and data acquisition: The flow rate, temperature, pressure and position of the latex matrix are collected by the flow sensor, temperature sensor, pressure sensor and position sensor installed on the mixed emulsion explosive vehicle, as well as the borehole depth and diameter data. At the same time, the explosiveness parameters of the rock in the working area are obtained by the rock explosiveness detection module. All collected data are transmitted to the control unit in real time. S2. Density adjustment command generation: Based on the rock explosiveness parameters, latex matrix parameters and borehole parameters collected in S1, the control unit calculates the target charge density value by combining the preset explosive density and rock explosiveness matching model, and then generates the corresponding sensitizer flow rate adjustment command. The target charge density value ranges from 1.05 g / cm³ to 1.20 g / cm³. S3, Precise delivery and mixing of sensitizer: Based on the adjustment command generated by S2, the output flow of the sensitizer delivery pump is controlled by a high-precision mass flow meter to achieve a precise ratio of sensitizer to latex matrix. At the same time, a long-distance delivery drag reduction device is used to form a uniform lubricating film on the wall of the delivery tube to achieve layered delivery of latex matrix and sensitizer. The two are uniformly mixed at the end of the delivery tube by a static mixer. S4. Monitoring and Closed-Loop Adjustment of Conveying Process: The charging height, density and detonation velocity of the mixed explosive are monitored in real time through the charging parameter detection module. When the actual charging density deviates from the target density by more than ±0.02g / cm³, the control unit automatically corrects the sensitizer flow rate adjustment command. At the same time, the safety monitoring module monitors parameters such as conveying pressure and temperature. When an abnormality occurs, an alarm is immediately triggered and the relevant equipment is shut down.

2. The intelligent adjustment and conveying method for the charge density of mixed emulsion explosives according to claim 1, characterized in that, In step S1, the flow sensor includes an ultrasonic high-viscosity material flow meter for latex matrix metering and a mass flow meter for sensitizer metering, with a measurement accuracy of not less than 0.25%.

3. The intelligent adjustment and conveying method for the charge density of mixed emulsion explosives according to claim 1, characterized in that, In step S1, the rock blastability parameters include rock compressive strength, porosity, and wave impedance, which are obtained through preset detection sensors or by importing historical blasting data.

4. The intelligent adjustment and conveying method for the charge density of mixed emulsion explosives according to claim 1, characterized in that, In step S2, the explosive density and rock explosiveness matching model is trained by a machine learning algorithm. The input parameters are the rock explosiveness parameters and the borehole size, and the output parameters are the optimal charge density and the corresponding sensitizer ratio coefficient.

5. The intelligent adjustment and conveying method for the charge density of mixed emulsion explosives according to claim 1, characterized in that, In step S3, the long-distance conveying drag reduction device consists of an inner ring and an outer ring made of 304 stainless steel. A 2mm gap is provided between the inner ring and the outer ring. A groove is provided on the surface of the inner ring. After the lubricating fluid is pumped into the gap by a high-pressure plunger pump, it is diverted through the groove to form a continuous lubricating film.

6. The intelligent adjustment and conveying method for the charge density of mixed emulsion explosives according to claim 1, characterized in that, In step S3, the sensitizer delivery pump is a screw pump, and the control unit controls the pump speed through a PID closed-loop regulation algorithm to achieve precise control of the sensitizer flow rate, with a flow rate adjustment range of 0~500L / h.

7. The intelligent adjustment and conveying method for the charge density of mixed emulsion explosives according to claim 1, characterized in that, In step S4, the charge density is calculated through the coordinated measurement of the pressure sensor and the flow sensor, specifically by deriving the density value based on the mixed flow rate of the latex matrix and the sensitizer and the charge volume in the borehole.

8. The intelligent adjustment and conveying method for the charge density of mixed emulsion explosives according to claim 1, characterized in that, In step S4, the abnormal situations monitored by the safety monitoring module include overpressure during delivery, overtemperature during delivery, material interruption, interruption of sensitizer flow, and equipment failure.

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