An online monitoring system for coal mine roadway geological parameters

Abstract

The invention belongs to the technical field of geological parameter detection measurement, aims at overcoming the deficiency and limitation that existing anchor rod drilling machines adopting the rotation cutting method cannot conduct reasonable support according to the actual roadway geological conditions and provides a coal mine roadway geological parameter on-line monitoring system. The system comprises sensor detection elements, a data conversion module and a human-computer interface, roadway geological parameters such as a rock crack and the position and thickness thereof, a stratum surface limit and the position thereof and rock lateral-confinement-free compressive strength can be identified conveniently through four drilling parameters obtained by sensors, such as the oil cylinder feeding force and feeding speed and the drilling box motor rotating torque and rotating speed, hardness grading is further conducted on a back, the roadway geological parameters are judged so that anchoring protection parameters and drilling parameters can be adjusted and improved, and the deficiency and limitation that existing anchor rod drilling machines adopting the rotation cutting method can only conduct pure anchoring drilling operation and cannot conduct reasonable support according to the actual roadway geological conditions are overcome.

Description

Technical field [0001] The invention belongs to the technical field of geological parameter detection and measurement, and specifically relates to an online monitoring system for geological parameters of coal mine tunnels. Background technique [0002] At present, bolt support is generally adopted for underground roadways in coal mines. The commonly used support methods include manual hand drills and hydraulic bolting rigs. However, traditional methods such as engineering analogy and empirical formulas are still used in the design of bolting parameters. Under-anchor protection, over-anchor protection causes waste and reduces efficiency. Under-anchor protection causes excessive deformation of the roadway and even causes danger; in addition, the drilling parameters of hydraulic bolting rigs are usually set and not changed, and only artificially after failure Adjust the parameters, there are problems such as poor drilling continuity, low drilling efficiency and short drill bit life....

AI Technical Summary

Problems solved by technology

[0002] At present, rock bolts are commonly used in coal mine underground roadways. The commonly used support methods include manual hand drills and hydraulic rock bolt rigs. However, the design of anchor parameters still uses traditional methods such as engineering analogy and empirical formula methods. In the case of under-anchor protection, over-anchor protection will cause waste and reduce efficiency, and under-anchor protection will cause excessive deformation of the roadway and even cause danger; in addition, the drilling parameters of hydraulic rock bolt rigs are usually set and will not be changed, only after a failure occurs. Adjust the parameters, there are problems such as poor drilling continuity, low drilling efficiency and short service life of the drill bit

[0003] However, the currently used parameter monitoring system for underground coal mines, such as the multi-terminal parameter monitoring system for coal mine tunnel drilling rig with application number 201210186144.1, can only monitor underground parameters (pressure, oil tank liquid level, oil temperature, rotation speed, etc.) And acquisition, that is, the main function of the system is monitoring, and the state of the downhole rock cannot be judged through the parameters of the drilling rig, that is, the parameters, so that it is impossible to further intelligently adjust the parameters of downhole anchoring and protection

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