Bolter Miner Swing-Angle Control for Coal Seam Tunneling
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Solution Overview
Problem
Bolter miners face challenges in maintaining efficient tunneling due to uncertainties in coal seam dip angles and unevenness, leading to roof and floor cutting, equipment damage, and reduced recovery rates.
Innovation Solution
A bolter miner equipped with a cutting device that adjusts its swing angles based on real-time monitoring by a drilling rig and sensor system, preventing roof and floor cutting by adjusting swing angles when certain thresholds are exceeded, and includes features like adjustable drilling and anchor rod installation to enhance precision and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the bolter miner advances along the extension direction of the coal seam to ensure mining efficiency, then productivity is improved, but the cutting device may cut the roof and floor due to uncertainty in dip angle and unevenness of the coal seam, causing loss of substance and equipment damage
Solution Approach 1:
The drilling device performs preliminary drilling operations before the cutting device to detect the thickness of the coal seam and the position of the roof and floor rock strata. Based on this advance detection, the control device pre-adjusts the swing angles of the cutting device to prevent it from cutting into the rock strata, thus avoiding loss of substance while maintaining mining efficiency
Solution Approach 2:
The sensor on the drilling rig continuously monitors drilling parameters and provides real-time feedback to the control device. The control device analyzes this feedback information and dynamically adjusts the swing angles of the cutting device accordingly, ensuring that the cutting device operates within the coal seam boundaries and prevents cutting of the roof and floor, thereby improving recovery rate
2Productivity
If the bolter miner advances along the extension direction of the coal seam, then productivity is improved, but the cutting device may cut the roof and floor due to uncertainty in dip angle and unevenness, causing equipment damage
Solution Approach 1:
The drilling device performs preliminary drilling operations to detect the thickness of the coal seam and the position of the roof and floor rock strata before the cutting device operates. Based on this advance detection, the control device pre-adjusts the swing angles of the cutting device to prevent it from cutting into the hard rock strata, thereby avoiding equipment damage and prolonging equipment service life while maintaining mining efficiency
Solution Approach 2:
The sensor on the drilling rig continuously monitors drilling parameters and provides real-time feedback to the control device. The control device analyzes this feedback and dynamically adjusts the swing angles of the cutting device to ensure it only cuts coal rock and not the harder roof and floor rock strata, thus preventing equipment damage and improving reliability
3Ease of operation
If the cutting device swings with fixed angles to maintain operational simplicity, then ease of operation is improved, but it cannot adapt to variations in coal seam thickness and dip angle, causing loss of substance
Solution Approach 1:
The swing angles of the cutting device are changed from fixed to dynamically adjustable. The control device receives real-time feedback from the drilling sensor and automatically adjusts the swing angles of the cutting device according to the detected coal seam thickness and dip angle variations, enabling the system to adapt to geological changes without manual intervention, thus improving recovery rate while maintaining ease of operation
Solution Approach 2:
The drilling sensor provides real-time feedback on drilling parameters to the control device, which automatically adjusts the swing angles of the cutting device based on this feedback. This closed-loop control system enables the cutting device to adapt to variations in coal seam thickness and dip angle, preventing cutting of the roof and floor and improving recovery rate without requiring complex manual operations
Data Source
AI summary
A tunneling and anchoring machine (100) and a tunneling system, the tunneling and anchoring machine (100) comprising a rack (1), a cutting device (2), a drilling device (3) and a control device; the cutting device (2) has a lowest swing angle (B) and a highest swing angle (α); the drilling device (3) comprises a drilling machine (31) and a sensor, the sensor is electrically connected to the drilling machine (31), the drilling machine (31) is suitable for drilling a roadway floor and/or a roadway roof, and the sensor is suitable for, when the drilling machine (31) is drilling, monitoring a set parameter of the drilling machine (31) and generating a monitoring data signal; the sensor is electrically connected to the control device, and the control device is suitable for receiving and analyzing the monitoring data signal; when the drilling machine (31) drills a first thickness of the roadway floor, if the monitoring data signal is greater than a first threshold, the control device is suitable for adjusting the lowest swing angle (β); and when the drilling machine (31) drills a second thickness of the roadway roof, if the monitoring data signal is greater than a second threshold, the control device is suitable for adjusting the highest swing angle (α).