Stables, Brandon Shane2021-12-012021-12-012021-11-30vt_gsexam:33049http://hdl.handle.net/10919/106793Standing support is often used in conjunction with underground retreat mining. Knowledge of the load-displacement behavior of a standing support and loading induced by the mine opening is critical proper support selection. The NIOSH STOP database contains load-displacement laboratory test data for most commonly used standing supports. Hydraulic load cells currently used to measure in-situ loading of standing supports have exhibited leakage under load, producing irregularities within the dataset. An improved hydraulic load cell eliminates leakage and produces more consistent data.ETDenIn Copyrightstanding supportflat jacksmininghydraulic load cellpre-stressing deviceThesis