Welcome to SCT's own publications library which contains a collection of recent publications and other resources with reliable research about our technology.
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Pillar Design to Control Subsidence at Moonee Colliery - Ken Mills
Published Jul, 1998Moonee Colliery are longwall mining in the Great Northern seam at depths ranging from 90m to 170m. Surface infrastructure above the first four longwall panels includes the Pacific Highway and several residential and commercial properties.
This paper describes the pillar design approach used to manage surface subsidence in the area. The approach is based on previous detailed subsidence and pillar monitoring in nearby Wallarah Colliery and measurements of subsidence throughout the Lake Macquarie area for a wide range of pillar sizes and overburden depths. Undermining the Pacific Highway requires consideration of not only the amount of subsidence but also the timing and nature of subsidence. Various options were considered and a design developed to control surface subsidence to acceptable levels. This paper summarises the results of previous monitoring and outlines the issues considered in the longwall panel design for subsidence control at Moonee Colliery. MSTS-Conference-1998-Pillar-Design-to-Control-Subsidence-at-Moonee-Colliery-K.Mills-1998.pdf271 KB