The Use of Shape Accel Array for Deformation Monitoring and Parameter Inversion of a 300 m Ultrahigh Rockfill Dam

Table 2

Components and function table of the SAA.

Components	Function
High-precision MEMS accelerometer	Measure the acceleration of the dam deformation and then accurately obtain the displacement of the monitoring point, the core component of the SAA
Rigid pipe	Protect the MEMS accelerometer, provide strong shear resistance, torsion resistance, and tensile resistance
Flexible hose	Make the SAA installation convenient so that the arrangement is flexible and customizable based on the demands for monitoring and detecting dam deformation
Forced centring device	Ensures that the MEMS accelerometer can deform with the dam deformation, measures the acceleration, and gets the displacement
Orientation and guide wheels	Ensure that the SAA can be easily taken out of the pipeline to prevent it from being stuck when it is installed in the pipeline
Fixed depression device	Prevent large errors of subsequent monitoring points caused by excessive movement of the starting point and facilitate the installation of the SAA by pressing it into the PE hose