Bolter miner and tunneling system

An operation method for a bolter miner, wherein the bolter miner performs a drilling operation on a tunnel floor in a rock formation by:

• determining the number of cycles of tunneling footage advanced by a cutting device according to a thickness of a coal seam;
• determining a drilling position on the tunnel floor after the cutting device advances a determined number of cycles of tunneling footage;
• driving a rack to move, the cutting device arranged on the rack and being swingable in an up-down direction, moving a drilling device to a position corresponding to the drilling position on the tunnel floor, and drilling the tunnel floor by the drilling device, the drilling device arranged on the rack and comprising a drilling rig and a sensor electrically connected to the drilling rig;
• transmitting a monitoring data signal to a control device in real time by using the sensor in a process of drilling the tunnel floor by a first thickness through the drilling device, wherein the sensor is configured to monitor set parameters of the drilling rig and to generate the monitoring data signal when the drilling rig is drilling, wherein the set parameters are related to properties of the rock formation;
• and
• analyzing and comparing, by the control device, the monitoring data signal with a first threshold in real time, and correcting a lowest swing angle of the cutting device inside the control device in response to the monitoring data signal being greater than the first threshold, the first threshold is a numerical parameter corresponding to a propulsion force of the drilling rig when breaking through an interface between a coal seam and a rock stratum below the coal seam in the rock formation.

A tunneling system, comprising a bolter miner, wherein the bolter miner comprises:

• a rack;
• a cutting device arranged on the rack and being swingable in an up-down direction, wherein the cutting device comprises a lowest swing angle, at which the cutting device is configured to cut coal rock at a bottom of a working face in a rock formation, and comprises a highest swing angle, at which the cutting device is configured to cut coal rock at a top of the working face;
• a drilling device arranged on the rack and comprising a drilling rig and a sensor electrically connected to the drilling rig, wherein the drilling rig is configured to drill at least one of a tunnel floor or a tunnel roof, and the sensor is configured to monitor set parameters of the drilling rig and to generate a monitoring data signal when the drilling rig is drilling, wherein the set parameters are related to properties of the rock formation;
• and
• a control device, to which the sensor is electrically connected, wherein the control device is configured to receive and analyze the monitoring data signal;
• when the drilling rig is drilling the tunnel floor by a first thickness, the control device is configured to reduce the lowest swing angle in response to the monitoring data signal being greater than a first threshold;
• and when the drilling rig is drilling the tunnel roof by a second thickness, the control device is configured to reduce the highest swing angle in response to the monitoring data signal being greater than a second threshold, wherein the first threshold is a numerical parameter corresponding to a propulsion force of the drilling rig when breaking through an interface between a coal seam and a rock stratum below the coal seam of the rock formation, and the second threshold is a numerical parameter corresponding to a propulsion force of the drilling rig when breaking through an interface between the coal seam and a rock stratum above the coal seam.