TY - CPAPER AU - А. В. Ловчиков TI - COMPARISON OF EFFICIENCY OF IN-SITU METHODS FOR CONTROLING THE STRESS STATE OF PILLARS UNDER ULTIMATE LOADS T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Science and Technologies in Geology, Exploration And Mining PY - 2020 SP - 491 EP - 502 DO - 10.5593/sgem2020/1.2/s05.063 PB - STEF92 Technology ER -