To study the stability of underground powerhouse at Houziyan hydropower station during excavation. a microseismic monitoring system is adopted. Based on the space-time distribution characteristics of microseismic events during excavation of the main powerhouse. the correlation between microseismic events and blasting construction is established; and the microseismic clustering areas o... https://www.ngetikin.com/special-pick-MVP4-Moisture-Vapor-Protection-Anti-Fracture-and-Noise-Reduction-Membrane-special-save/