1 Laboratory Manager, Department of Civil, Surveying and Environmental Engineering, The University of Newcastle, Australia
2 CBPI Professor in Structural Clay Brickwork, Department of Civil, Surveying and Environmental Engineering, The University of Newcastle, Australia
3 Consulting Engineer and Postgraduate Student, Department of Civil, Surveying and Environmental Engineering, The University of Newcastle, Australia
ABSTRACT
Longwall mining is a common form of coal extraction in modem underground collieries. With this process the complete coal seam is progressively removed with the consequent subsidence of the ground surface. This paper describes the development and testing of a full masonry housing system capable of withstanding the surface effects of longwall mining. The system consists of a stiffened prestressed concrete raft slab combined with a light steel framing system and articulated masonry external and internal walls. The effectiveness of the system was demonstrated by tests on a full scale prototype house which was subjected lo doming and dishing curvatures and tilt effects similar to those which would be induced by a longwall mining event using a jacking system localed beneath the slab. These tests are described in this paper.
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