Study on In Situ Stress Measurement and Surrounding Rock Control Technology in Deep Mine
Drilling design parameters of each measuring point.
|Survey point number||Drilling position||Underground depth (m)||Actual drilling parameters|
|Large diameter drilling depth (m)||Small diameter drilling depth (m)||Azimuth (°)||Dip (°)|
|Point no. 1||Chamber for water exploration in the parking lot at the bottom of the first mining area||1085||10||0.4||60||10.5|
|Point no. 2||In the roadway leading to the auxiliary shaft near the pit bottom parking lot||1089||12||0.4||60||10|
|Point no. 3||In the tunnel leading to the sump||1089||12||0.4||60||10.5|