BEDROCK GROUTING MONITORING APPARATUS USING ELECTRODE INSTALLED IN ROCK INJECTION HOLE

摘要

Disclosed is a bedrock grouting monitoring apparatus using an electrode installed in a bedrock injection hole. The disclosed bedrock grouting monitoring apparatus comprises: a plurality of injection holes installed in a radial shape in an underground structure to form a grouting portion by injecting grout into a bedrock or a ground around the underground structure; a plurality of electrodes provided inside the injection holes; a plurality of temperature sensors provided in the injection holes to measure temperature of the ground or bedrock; a measuring unit for applying a current or voltage to the electrodes and measuring a resistance value between electrodes provided in adjacent injection holes; and a grouting analysis unit for analyzing the measured values of the temperature sensor and the measuring unit to calculate an electrical resistivity value. Accordingly, the present invention allows grouting to be immediately evaluated in the field.;COPYRIGHT KIPO 2017