The invention provides an underground
pipe gallery
deformation monitoring system, which comprises a base, a filling block, turning handles, resistors,
resistor springs, turning
handle springs, base springs and a circuit
chip. The base is mounted in the included angle of
pipe gallery walls; the filling block is filled in a
cut cube block cavity of the base; each
resistor installation cavity and a filling block
resistor cavity of the base and the filling block form a cylindrical cavity; the inner side of each cylindrical cavity is equipped with one resistor; and the opening of each cylindrical cavity is in a
throat shape, and is embedded by a spherical block of the turning
handle. When a horizontal wall, a first vertical wall and a second vertical wall are in relative rotation, the walls drive driving slices at the outer ends of the turning handles to move; the inner end of each turning
handle rotates, and an eccentric plate at the innermost end of each turning handle presses or releasesa pole plate at the outer side of each resistor, so that the distance between the two pole plates of the resistor changes, length and cross-sectional area of
metallic mercury in a soft shell changes,resistance changes, and
voltage between the two pole plates of the resistor changes; and by monitoring the change of the
voltage value, relative rotated angle of the walls can be calculated.