Abstract: The invention provides a three-dimensional resistivity probe for in-situ monitoring comprises: a probe rod body inside which one or more subordinate controllers are provided; a control cabin inside which a main controller is provided disposed at the top of the probe rod body; and a cone tip provided at the bottom of the probe rod body; wherein the probe rod body comprising: a plurality of resistivity sensor modules, wherein each resistivity sensor module including a plurality of insulating rings, each insulating ring having a protruded part at a top end and a groove fitting into at a bottom end, three or more point-electrode grooves are formed at the top end of each insulating ring and two through holes allowing two positioning rods to insert into for assembly are opened thereon and the outer end of each point-electrode groove extends to an outer circumference of each insulating ring.

Abstract: The invention provides a three-dimensional resistivity probe for in-situ monitoring comprises: a probe rod body inside which one or more subordinate controllers are provided; a control cabin inside which a main controller is provided disposed at the top of the probe rod body; and a cone tip provided at the bottom of the probe rod body; wherein the probe rod body comprising: a plurality of resistivity sensor modules, wherein each resistivity sensor module including a plurality of insulating rings, each insulating ring having a protruded part at a top end and a groove fitting into at a bottom end, three or more point-electrode grooves are formed at the top end of each insulating ring and two through holes allowing two positioning rods to insert into for assembly are opened thereon and the outer end of each point-electrode groove extends to an outer circumference of each insulating ring.