CHARACTERISTICS OF DEFORMATION AND DAMAGE OF SURROUNDING ROCK ALONG THE TOP ROADWAY IN THE WORKING FACE OF AN ISOLATED ISLAND AND ITS EVOLUTION LAW

Abstract This Fencing study investigates the deformation and damage characteristics of the surrounding rock along the top return mining roadway of an isolated island working face at different stages and reveals its damage mechanism and evolution law.Utilizing a mine in Yangquan City, Shanxi Province, China, as the engineering background, this resea

The present study determined the neuromuscular fatigue threshold (NFT) using four different time-periods of analysis of the electromyographic signal and compared these estimations with critical power (CP).Fifteen healthy young men (73.6 ± 5.1 kg, 177.8 ± 7.0 cm, 23.4 ± 5.2 years) performed 3-4 different severe constant workload trials until exha