Method for judging change trend of rock hardness based on rock breaking vibration waveform of heading machine

• Main Authors: HU SHICHAO, ZUO JINJING, CUI YU, WANG ZIJIE, ZHU HECHAO, CHAI QINGPING, GUO ZHIDONG, LIU XIANGYU
• Format: Patent
• Language: Chinese; English
• Published: 02.02.2024
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; LARGE UNDERGROUND CHAMBERS; MEASURING; MINING; PHYSICS; SHAFTS; TESTING; TUNNELS

The invention provides a method for judging the change trend of rock hardness based on the rock breaking vibration waveform of a heading machine, which comprises the following steps of: arranging a vibration sensor and a vibration tester in a cutterhead of the heading machine, and continuously collecting three-way vibration waves when the cutterhead hob breaks rock; the method comprises the following steps: selecting vibration waves capable of reflecting the rock hardness change of a working face from X, Y and Z directions, analyzing the characteristics of rock breaking vibration waves in the selected directions in different time periods from the aspects of time domain, frequency domain and energy, and judging the rock hardness change according to the difference of waveform characteristics in different time periods. According to the method, the change trend of the working face rock hardness can be judged in real time through the change of the waveform characteristics of the rock breaking source. 本发明提供一种基于掘进机破