Abstract
Subsidence due to underground coal mining caused considerable damage to the houses of Paifang village. In this work, damage levels (A-D according to Chinese National Guidelines) were determined by measuring the magnitude of cracks with a steel tape. Buildings were subdivided by structure, quality and location; differentiated structures included one-storey, one-storey with footing beams, and two-storey with footing beams. Results indicate that the damage levels of houses are closely related to the structures and the location in respect to the extracted area. Poor quality houses were more easily damaged than well-built ones; two-storey houses were more unstable than one-storey; and the houses near the boundary of the extracted area suffered larger distensional strain, and were more heavily damaged. The findings will be useful to house maintenance and to reinforcing newly built houses.
Published Version
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