Coal seam gas extraction drilling dynamic sealing intelligent control system and method

Abstract

The application discloses a coal seam gas extraction drilling hole dynamic sealing intelligent regulation and control system and method, in the system, the gas extraction drilling hole state monitoring system comprises a gas extraction parameter monitoring unit, a drilling hole state monitoring unit and a data transmission unit; the gas extraction drilling hole dynamic sealing effect quantitative analysis system comprises a basic parameter input module, a drilling hole state monitoring module, a drilling hole dynamic sealing quality solving module, a dynamic supplementary grouting regulation and control parameter solving module and a grouting parameter output module; the gas extraction drilling hole dynamic sealing supplementary grouting automatic regulation and control system comprises a supplementary grouting equipment state monitoring module and a supplementary grouting equipment operation parameter control module. The corresponding method of the system can perform drilling hole dynamic sealing effect quantitative analysis according to the drilling hole state and the gas extraction parameters collected by the system, solve the required parameters of dynamic sealing continuous supplementary grouting, and ensure that the gas extraction drilling hole is in an efficient sealing state. The system can be applied to the drilling hole sealing work of the coal seam gas extraction in a high-gas and outburst mine.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coal seam gas control, and particularly relates to a coal seam gas extraction drilling hole dynamic sealing intelligent control system and method. BACKGROUND

[0002] Gas disaster is one of the main disasters affecting the safety production of coal mines at present, and the most commonly used means in gas disaster control is drilling extraction, and the main factor affecting the gas extraction effect is the sealing effect of the drilling hole, therefore, improving the sealing quality of the drilling hole has important significance for controlling gas disaster. In order to improve the sealing quality of the mine gas, many mines have carried out exploration of dynamic sealing technology for gas extraction drilling holes.

[0003] At present, the gas extraction drilling hole dynamic sealing intelligent control system is still in the vacancy or development stage. The dynamic sealing effect of the drilling hole cannot be judged and the dynamic sealing grouting time and grouting amount of the drilling hole cannot be quantitatively determined, which leads to unsatisfactory dynamic sealing effect of the gas extraction drilling hole and affects the gas extraction effect. Therefore, in order to realize accurate and efficient grouting during the dynamic sealing of the coal seam gas extraction drilling hole, it is urgent to develop a coal seam gas extraction drilling hole dynamic sealing intelligent control system and method to ensure the dynamic sealing effect of the mine gas extraction drilling hole and improve the coal seam gas extraction capacity. SUMMARY

[0004] The purpose of the present application is to provide a coal seam gas extraction drilling hole dynamic sealing intelligent control system, which solves the problem that the sealing effect of the dynamic sealing of the mine gas extraction drilling hole and the gas extraction effect need to be further optimized in the current gas extraction drilling hole dynamic sealing intelligent control system.

[0005] The technical solution adopted by the present application is:

[0006] The coal seam gas extraction drilling hole dynamic sealing intelligent control system comprises a gas extraction drilling hole state monitoring system, a gas extraction drilling hole dynamic sealing effect quantitative analysis system and a gas extraction drilling hole dynamic sealing grouting automatic control system.

[0007] The present application is characterized in that:

[0008] The gas extraction drilling hole state monitoring system is used for real-time monitoring of the state parameters and extraction characteristic parameters of the gas extraction drilling hole, and transmitting the data to the gas extraction drilling hole dynamic sealing effect quantitative analysis system;

[0009] The gas extraction drilling dynamic sealing effect quantitative analysis system is used for automatically analyzing the fracture development state and the gas leakage state of the sealing area of the drilling, quantitatively judging the dynamic sealing effect of the gas extraction drilling, and automatically calculating the reasonable process parameters required for the dynamic sealing grouting of the drilling, and feeding back to the gas extraction drilling dynamic sealing grouting automatic control system according to the drilling state parameters and the gas extraction parameters collected by the system.

[0010] The gas extraction drilling dynamic sealing grouting automatic control system is used for monitoring the equipment state and parameters of the coal seam gas extraction drilling grouting device, and controlling the grouting pressure, the total grouting amount and the grouting speed process parameters.

[0011] The gas extraction drilling state monitoring system comprises a gas extraction parameter monitoring unit, a drilling state monitoring unit and a data transmission unit.

[0012] The gas extraction parameter monitoring unit is used for monitoring the gas extraction characteristic parameters of the dynamic sealing drilling during gas extraction, including the extraction concentration, the extraction flow rate and the extraction negative pressure key parameters.

[0013] The drilling state monitoring unit is used for monitoring the stress and strain parameters of the coal body of the sealing area of the dynamic sealing drilling.

[0014] The data transmission unit is used for transmitting the monitored drilling state parameters to the gas extraction drilling dynamic sealing effect quantitative analysis system.

[0015] The gas extraction drilling dynamic sealing effect quantitative analysis system comprises a basic parameter input module, a drilling state monitoring module, a drilling dynamic sealing quality calculation module, a dynamic grouting control parameter calculation module and a grouting parameter output module.

[0016] The basic parameter input module is used for inputting the basic fixed parameters of the coal seam gas content, the coal body tensile / compressive strength, the coal seam permeability coefficient, the gas attenuation rate per 100 meters of drilling, the coal seam gas pressure and the drilling gas emission attenuation coefficient.

[0017] The drilling state monitoring information input module is used for automatically inputting the drilling stress and strain, the extraction negative pressure, the extraction flow rate and the extraction concentration key parameters monitored by the gas extraction drilling state monitoring system.

[0018] The drilling dynamic sealing quality calculation module is used for statistically analyzing the inputted basic parameters and the real-time collected drilling state parameters, quantitatively calculating the drilling gas leakage state and judging the dynamic sealing effect of the drilling.

[0019] The dynamic grouting regulation parameter solving module is used for analyzing and solving the monitored drilling state parameters and gas extraction parameters, inverting the fracture development state and gas leakage characteristics of the sealing area of the drilling, and comprehensively obtaining the dynamic sealing grouting process parameter quantitative indexes of the drilling, such as grouting pressure, total grouting amount and grouting speed.

[0020] The grouting parameter output module is used for outputting the dynamic sealing grouting process parameter quantitative indexes of the hole to the gas extraction drilling dynamic sealing grouting automatic regulation system.

[0021] The gas extraction drilling dynamic sealing grouting automatic regulation system comprises a grouting equipment state monitoring module and a grouting equipment operation parameter control module.

[0022] The grouting equipment state monitoring module is used for monitoring the real-time operation state of the grouting equipment, collecting the grouting pressure, total grouting amount and grouting speed data in the grouting process in the grouting equipment in real time, and transmitting the real-time data collected by monitoring to the gas extraction drilling dynamic sealing effect quantitative analysis system.

[0023] Based on the system, the coal seam gas extraction drilling dynamic sealing intelligent regulation method specifically comprises the following steps:

[0024] Step 1: First, the gas extraction parameter monitoring unit and the drilling state monitoring unit of the gas extraction drilling state monitoring system automatically collect the state parameters and drilling extraction parameters of the dynamic sealing drilling, and transmit them to the gas extraction drilling dynamic sealing effect quantitative analysis system.

[0025] Step 2: The dynamic grouting regulation parameter solving module of the gas extraction drilling dynamic sealing effect quantitative analysis system and the dynamic grouting regulation parameter solving module solve the basic fixed parameters input by the basic parameter input module and the received state parameters and drilling extraction parameters of the dynamic sealing drilling, obtain the fracture development state and gas leakage characteristics of the sealing area of the dynamic sealing drilling, quantitatively judge the dynamic sealing effect of the drilling, and invert the grouting process parameters required by the dynamic sealing drilling.

[0026] Step 3: The grouting equipment operation parameter control module of the gas extraction drilling hole dynamic sealing grouting automatic regulation and control system regulates and controls the equipment operation parameters according to the received grouting process parameter values required by the dynamic sealing drilling hole, and in the regulation and control process, the grouting equipment state monitoring module monitors the dynamic grouting information in real time and transmits it to the gas extraction drilling hole dynamic sealing effect quantitative analysis system, and the dynamic grouting regulation and control parameter solving module continuously solves, feeds back and adjusts the grouting equipment operation parameters;

[0027] Step 4: After the regulation and control is completed, the coal seam gas extraction drilling hole dynamic sealing intelligent regulation and control system continuously collects, solves and feeds back the regulation and control of the dynamic sealing drilling hole sealing effect, and forms a dynamic cycle regulation and control.

[0028] The coal seam gas extraction drilling hole dynamic sealing intelligent regulation and control system and method provided by the application can realize real-time collection of coal seam gas extraction characteristic parameters and drilling stress and strain time-varying characteristic parameters, quantitative analysis of dynamic sealing effect, dynamic inversion of dynamic sealing grouting key process parameters, and intelligent regulation and control of the whole process of dynamic sealing grouting, thereby ensuring the sealing effect of the coal seam gas extraction drilling hole.

[0029] The coal seam gas extraction drilling hole dynamic sealing intelligent regulation and control method provided by the application can solve the crack development state and gas leakage characteristics of the sealing area of the dynamic sealing drilling hole according to the basic physical and mechanical characteristics of the coal seam, the coal seam gas occurrence characteristics, the stress and strain characteristics of the extraction drilling area and the extraction parameters of the gas extraction drilling hole, and can invert the grouting process parameters required by the dynamic sealing drilling hole, and can dynamically regulate and control the dynamic sealing grouting equipment according to the solving result, thereby realizing intelligent control of the dynamic sealing grouting process of the coal seam gas extraction drilling hole. BRIEF DESCRIPTION OF DRAWINGS

[0030] Fig. 1 is the overall architecture schematic diagram of the coal seam gas extraction drilling hole dynamic sealing intelligent regulation and control system and method of the application;

[0031] Fig. 2 is the connection schematic diagram of the regulation and control data transmission in the coal seam gas extraction drilling hole dynamic sealing intelligent regulation and control system and method of the application;

[0032] Fig. 3 is the flowchart of the coal seam gas extraction drilling hole dynamic sealing intelligent regulation and control system and method. DETAILED DESCRIPTION

[0033] The coal seam gas extraction drilling hole dynamic sealing intelligent regulation and control system of the application will be described in detail below in combination with the drawings and specific embodiments.

[0034] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0035] Embodiment 1, refer to Figs. 1 to 3 The coal seam gas extraction drilling dynamic sealing intelligent control system provided by the present application comprises three components: a gas extraction drilling state monitoring system, a gas extraction drilling dynamic sealing effect quantitative analysis system and a gas extraction drilling dynamic sealing grouting automatic control system. The gas extraction drilling state monitoring system comprises a gas extraction parameter monitoring unit, a drilling state monitoring unit and a data transmission unit. The gas extraction drilling dynamic sealing grouting automatic control system comprises a grouting equipment state monitoring module and a grouting equipment operating parameter control module. The gas extraction drilling dynamic sealing effect quantitative analysis system comprises a basic parameter input module, a drilling state monitoring module, a drilling dynamic sealing quality solving module, a dynamic grouting control parameter solving module and a grouting parameter output module.

[0036] The gas extraction drilling state monitoring system is used for monitoring the state parameters and extraction characteristic parameters of the gas extraction drilling in real time, and transmitting the data to the gas extraction drilling dynamic sealing effect quantitative analysis system. The gas extraction drilling dynamic sealing effect quantitative analysis system is used for automatically analyzing the fracture development state and air leakage state of the drilling sealing zone, quantitatively judging the dynamic sealing effect of the gas extraction drilling, and automatically solving the reasonable process parameters required for the drilling dynamic sealing grouting, and feeding back to the gas extraction drilling dynamic sealing grouting automatic control system. The gas extraction drilling dynamic sealing grouting automatic control system is used for monitoring the equipment state and parameters of the coal seam gas extraction drilling grouting device, and controlling the process parameters such as grouting pressure, grouting speed and total grouting amount.

[0037] Embodiment 2, further, the gas extraction drilling state monitoring system comprises a gas extraction parameter monitoring unit, a drilling state monitoring unit and a data transmission unit.

[0038] The gas extraction parameter monitoring unit is used for monitoring the gas extraction characteristic parameters of the dynamic sealing drilling during gas extraction, including key parameters such as extraction concentration, extraction flow rate and extraction negative pressure. The drilling state monitoring unit is used for monitoring the stress and strain parameters of the coal body in the sealing zone of the dynamic sealing drilling. The data transmission unit is used for transmitting the monitored drilling state parameters to the gas extraction drilling dynamic sealing effect quantitative analysis system.

[0039] The embodiment 3 further provides the gas extraction drilling dynamic sealing effect quantitative analysis system, which comprises a basic parameter input module, a drilling state monitoring module, a drilling dynamic sealing quality solving module, a dynamic grouting regulation parameter solving module and a grouting parameter output module.

[0040] The basic parameter input module is used for inputting basic fixed parameters such as coal seam gas content, coal body tensile / compressive strength, coal seam permeability coefficient, drilling gas attenuation rate per 100 meters, coal seam gas pressure and drilling gas emission attenuation coefficient; the drilling state monitoring information input module is used for automatically inputting key parameters such as drilling stress and strain, extraction negative pressure, extraction flow rate and extraction concentration monitored by the gas extraction drilling state monitoring system; the drilling dynamic sealing quality solving module is used for solving the inputted basic parameters and the real-time collected drilling state parameters, and quantitatively judging the drilling dynamic sealing effect; the dynamic grouting regulation parameter solving module is used for analyzing and solving the monitored drilling state parameters and the gas extraction parameters, inversely calculating the fracture development state and the air leakage characteristics of the drilling sealing area, and comprehensively obtaining drilling dynamic sealing grouting process parameter quantitative indexes such as grouting pressure, grouting quality and required slurry ratio; and the grouting parameter output module is used for outputting the drilling dynamic sealing grouting process parameter quantitative indexes to the gas extraction drilling dynamic sealing grouting automatic regulation system.

[0041] The embodiment 4 further provides the gas extraction drilling dynamic sealing grouting automatic regulation system, which comprises a grouting equipment state monitoring module and a grouting equipment operation parameter control module.

[0042] The grouting equipment state monitoring module is used for monitoring the real-time operation state of the grouting equipment, collecting data such as grouting pressure, total grouting amount in the grouting process and grouting speed in the grouting equipment in real time, and transmitting the real-time data collected by monitoring to the gas extraction drilling dynamic sealing effect quantitative analysis system. The grouting equipment operation parameter control module automatically controls the grouting equipment to start / stop, regulates the grouting pressure and the grouting speed by receiving the drilling dynamic sealing grouting process parameter quantitative indexes output by the gas extraction drilling dynamic sealing effect quantitative analysis system.

[0043] The embodiment 5 provides a coal seam gas extraction drilling dynamic sealing intelligent regulation method, which comprises the following contents.

[0044] Firstly, the coal seam gas extraction drilling dynamic sealing intelligent control system is arranged based on the distribution of the coal seam gas extraction drilling, and the basic fixed parameters such as the coal seam gas content, the coal body tensile / compressive strength, the coal seam permeability coefficient, the 100-meter drilling gas attenuation rate, the coal seam gas pressure and the drilling gas emission attenuation coefficient are set; in the actual sealing process, the gas extraction drilling state monitoring system collects the stress and strain parameters of the dynamic sealing drilling sealing area and the gas extraction characteristic parameters in real time and transmits them to the gas extraction drilling dynamic sealing effect quantitative analysis system; the gas extraction drilling dynamic sealing effect quantitative analysis system calculates the drilling sealing effect according to the obtained drilling state parameters and extraction parameters and combines the coal seam basic parameters, and inversely calculates the dynamic sealing grouting process parameters, and feeds back the dynamic sealing grouting process parameters to the gas extraction drilling dynamic sealing grouting automatic control system; the grouting equipment operation parameter control module of the gas extraction drilling dynamic sealing grouting automatic control system controls the grouting equipment operation state according to the feedback parameters, controls the grouting device start\stop, grouting pressure and grouting speed in real time, and the grouting equipment state monitoring module monitors the grouting information in real time and transmits it to the gas extraction drilling dynamic sealing effect quantitative analysis system during the control process, and the gas extraction drilling dynamic sealing effect quantitative analysis system dynamically adjusts the grouting pump operation parameters according to the real-time grouting information, so that the grouting total amount, grouting pressure and grouting speed and other process parameters meet the dynamic sealing requirements. In the actual work of the coal seam gas extraction drilling dynamic sealing intelligent control system, the cycle state of collection, calculation and control is formed, and the dynamic sealing drilling is ensured to be in an efficient sealing state for a long time.

[0045] The coal seam gas extraction drilling dynamic sealing intelligent control system and method of the application establishes a gas extraction drilling state monitoring system and a gas extraction drilling dynamic sealing effect quantitative analysis system, analyzes the dynamic sealing effect by monitoring the drilling state and extraction parameters, inversely calculates the grouting process parameters, and links with the gas extraction drilling dynamic sealing grouting automatic control system to realize the intelligent dynamic grouting of the gas extraction drilling dynamic sealing, improve the dynamic sealing quality of the coal seam gas extraction drilling, and improve the gas extraction effect of the working face.

Claims

1. A dynamic sealing intelligent control system for coal seam gas drainage boreholes, characterized in that, This includes a gas drainage borehole status monitoring system, a gas drainage borehole dynamic sealing effect quantitative analysis system, and a gas drainage borehole dynamic sealing grouting automatic control system. The gas drainage borehole status monitoring system includes a gas drainage parameter monitoring unit, a borehole status monitoring unit, and a data transmission unit; wherein: The gas extraction parameter monitoring unit is used to monitor the gas extraction characteristic parameters during gas extraction in dynamic sealed boreholes, including key parameters such as extraction concentration, extraction flow rate, and extraction negative pressure. The borehole condition monitoring unit is used to monitor the stress and strain parameters of the coal in the sealing zone of a dynamically sealed borehole; The data transmission unit is used to transmit the monitored borehole status parameters to the dynamic sealing effect quantitative analysis system for gas drainage boreholes; The gas drainage borehole dynamic sealing effect quantitative analysis system includes a basic parameter input module, a borehole status monitoring information input module, a borehole dynamic sealing quality calculation module, a dynamic grouting control parameter calculation module, and a grouting parameter output module; among which: The basic parameter input module is used to input basic fixed parameters such as coal seam gas content, coal tensile / compressive strength, coal seam permeability coefficient, 100-meter borehole gas attenuation rate, coal seam gas pressure, and borehole gas emission attenuation coefficient. The borehole condition monitoring information input module is used to automatically input the borehole stress and strain, extraction negative pressure, extraction flow rate and extraction concentration monitored by the gas extraction borehole condition monitoring system. The drilling dynamic sealing quality calculation module is used to perform statistical analysis on the input basic parameters and the real-time collected drilling status parameters, quantitatively calculate the drilling leakage status and evaluate the dynamic sealing effect of the drilling. The dynamic grouting control parameter calculation module is used to analyze and calculate the monitored borehole status parameters and gas extraction characteristic parameters, and to inversely determine the fracture development status and gas leakage characteristics of the borehole sealing area, thereby obtaining a comprehensive quantitative index of the borehole dynamic sealing grouting process parameters. The grouting parameter output module is used to output quantitative indicators of the dynamic sealing grouting process parameters of boreholes to the automatic control system for dynamic sealing grouting of gas extraction boreholes. The automatic control system for dynamic sealing grouting in gas drainage boreholes includes a grouting equipment status monitoring module and a grouting equipment operating parameter control module; wherein: The grouting equipment status monitoring module is used to monitor the real-time operating status of the grouting equipment, collect data on grouting pressure, total grouting volume, and grouting speed in real time, and transmit the collected real-time data to the gas drainage borehole dynamic sealing effect quantitative analysis system. The grouting equipment operation parameter control module automatically controls the grouting equipment to open / close, adjust grouting pressure and grouting speed by receiving the borehole dynamic sealing grouting process parameter quantitative indicators output by the gas drainage borehole dynamic sealing effect quantitative analysis system.

2. The intelligent control system for dynamic sealing of coal seam gas drainage boreholes according to claim 1, characterized in that, The gas drainage borehole status monitoring system is used to monitor the status parameters and drainage characteristic parameters of the gas drainage borehole in real time, and transmit the data to the gas drainage borehole dynamic sealing effect quantitative analysis system. The gas drainage borehole dynamic sealing effect quantitative analysis system is used to automatically analyze the fracture development and leakage status of the borehole sealing zone based on the borehole status parameters and gas drainage characteristic parameters collected by the system, quantitatively evaluate the dynamic sealing effect of the gas drainage borehole, and automatically calculate the reasonable process parameters required for dynamic sealing grouting, feeding them back to the gas drainage borehole dynamic sealing grouting automatic control system. The gas drainage borehole dynamic sealing grouting automatic control system is used to monitor the equipment status and parameters of the grouting device in the gas drainage borehole of this coal seam, and to control the process parameters of grouting pressure, total grouting volume, and grouting speed.

3. The intelligent control system for dynamic sealing of coal seam gas drainage boreholes according to any one of claims 1-2, characterized in that, The intelligent control method for dynamic sealing of coal seam gas drainage boreholes, based on the intelligent control system for dynamic sealing, specifically includes the following steps: Step 1: First, the gas extraction parameter monitoring unit and borehole status monitoring unit of the gas extraction borehole status monitoring system automatically collect the status parameters and borehole extraction parameters of the dynamic sealing borehole and transmit them to the gas extraction borehole dynamic sealing effect quantitative analysis system. Step 2: The dynamic sealing quality calculation module and dynamic grouting control parameter calculation module of the gas drainage borehole dynamic sealing effect quantitative analysis system calculate the basic fixed parameters entered by the basic parameter input module and the dynamic sealing borehole status parameters and borehole extraction parameters entered by the received borehole status monitoring information input module. The calculation results are obtained to obtain the fracture development status and leakage characteristics of the sealing area of ​​the dynamic sealing borehole, quantitatively evaluate the dynamic sealing effect of the borehole, and deduce the grouting process parameters required for the dynamic sealing borehole. The results are output to the gas drainage borehole dynamic sealing grouting automatic control system through the grouting parameter output module. Step 3: The grouting equipment operation parameter control module of the gas drainage borehole dynamic sealing grouting automatic control system adjusts the equipment operation parameters according to the received grouting process parameter values ​​required for the dynamic sealing borehole. During the adjustment process, the grouting equipment status monitoring module monitors the dynamic grouting information in real time and transmits it to the gas drainage borehole dynamic sealing effect quantitative analysis system. The dynamic grouting control parameter calculation module continuously calculates, feeds back, and adjusts the grouting equipment operation parameters. Step 4: After the control is completed, the intelligent control system for dynamic sealing of coal seam gas drainage boreholes continuously collects and calculates the sealing effect of dynamic sealing boreholes in real time, and provides feedback for adjustment, forming a dynamic cycle control.

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