In-situ testing device and method for surface stress of surface protection component

The invention relates to the technical field of coal mining, and provides an in-situ testing device and method for surface stress of a surface protection component. The in-situ testing device for the surface stress of the surface protection component comprises a crusty pancake, an oil pipe and a pre...

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Bibliographische Detailangaben
Hauptverfasser:	LI JIANZHONG, WANG XIAOQING, YANG JINGHE, YANG LEI, LOU JINFU, GAO FUQIANG, YUAN GUIYANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE PHYSICS TESTING
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Beschreibung
Zusammenfassung:	The invention relates to the technical field of coal mining, and provides an in-situ testing device and method for surface stress of a surface protection component. The in-situ testing device for the surface stress of the surface protection component comprises a crusty pancake, an oil pipe and a pressure sensor. An oil storage cavity is formed in the oil tank door, a connector communicated with the oil storage cavity is formed in the oil tank door, the first end of the oil pipe is communicated with the connector, the second end of the oil pipe is communicated with the pressure sensor, and the pressure sensor is used for detecting oil pressure in the oil storage cavity. The stress change of the metal net is monitored through the crusty pancake, the oil pressure change in the crusty pancake is detected in real time through the pressure sensor, and real-time monitoring of the surface stress change process of the metal net in the deformation process of a roadway roof is achieved, so that roadway surrounding rock