Patent ID: 8474918

Claim:
A method for monitoring the travel path of a cutting extraction machine, which can be moved along the working front equipped with a face conveyor and an advancing support in longwall mining, the method comprising the steps of: scanning a travel path of the extraction machine in the direction of travel of the extraction machine via a radar echo measurement device, and if a hindrance in the travel path is determined, performing at least one first response condition, the at least one first response condition being selected from the group consisting of: triggering an alarm, and intervening into the control of the extraction machine, wherein the hindrance is selected from the group consisting of: shield caps that are standing low, extendible cantilevers that are standing low, sliding roof bars that are standing low, attachments of the advancing support that are hanging down, and overloading of the conveying belt of the face conveyor, in the region of the conveying belt side of the face conveyor.