Prediction of progressive surface subsidence above longwall coal mining using a time function

✍ Scribed by Cui, Ximin ;Wang, Jiachen ;Liu, Yisheng

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 457 KB
• Volume: 38
• Category: Article
• ISSN: 0148-9062
• DOI: 10.1016/s1365-1609(01)00061-2

✦ Synopsis

For super-critical conditions, the bottom of the final subsidence basin is flat and there the surface slope and curvature induced by ground subsidence are zero. This means that there is no permanent differential surface deformation, and thus no damages to those structures located in the subsidence basin bottomFwere the ground is to be simply lowered. However, during the deformation of the subsidence basin, the damage potential of progressive and differential deformation must not be overlooked: proper precautions should be considered accordingly. * Surface movement and deformation during the formation of the subsidence basin are time dependent; therefore, protective measures for structures should be designed with the knowledge of the timedependent behavior.