Title :
Research on the Measured Signal Processing by the Stress Sensor in the Soft Rock
Author :
Chang-peng, Ji ; Li-li, Liu
Author_Institution :
Sch. of Electron. & Inf. Eng., Liaoning Tech. Univ., Huludao, China
Abstract :
We discuss the borehole deformation which is caused by the sensor and changes with time, and the ground stress formula calculated by the measured value is finally brought out, which is called stress measurement with rheological method. With the practical measurement, we use the nonlinear least squares method to get rock stress, and stress measurement with rheological method is similar to stress measurement with the hole wall strain method in stress size and stress direction.
Keywords :
deformation; elastic moduli; least squares approximations; rheology; rocks; signal processing; borehole deformation; elastic modulus; ground stress formula; hole wall strain method; nonlinear least squares method; rheological method; rock stress; signal processing; soft rock; stress direction; stress measurement; stress sensor; stress size; Boring; Elasticity; Engine cylinders; Length measurement; Rheology; Signal processing; Strain measurement; Stress measurement; Time measurement; Viscosity; elastic modulus; rheological; strain; strata stress; stress;
Conference_Titel :
Environmental Science and Information Application Technology, 2009. ESIAT 2009. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-0-7695-3682-8
DOI :
10.1109/ESIAT.2009.225
