Base on the analysis and research on the temperature strain crossing sensitive mechanism of the optical fiber and optical grating,an optical Bragg and optical grating bolt dynamometer was designed and developed base on a cylinder transmission.

A mechanics model of dynamometry bolt was given and it was shown that dynamometry bolt mainly bear tension and torque in real application.

The working relationship map between dynamometry bolt and surrounding rock is proposed.

Based on the principle of the linear relation between nut kinetic frictional tightening torque and axial pre-tightening force of anchor stem which is indirectly measured through measuring the tightening torque,the intrinsically safe portable dynamometer for anchor stem in mine is developed with the ultralow-power MSP430 serial SCM and peripheral circuit.

3D solid design of anchor shank tension meter based on MDT;

A Pro/E-based 3D parametric modeling and design method for anchor shank tension meter is proposed.

By mastering excavating slope s distortion in abutment,mastering bolt stress meters s result analysis to analyse and feedback,which can offer data information and referrence for slope stability and excavating support,offering information for safe construction.

Discussion on the application of anchor load cells;