Grosvenor Mine Roof Fall

The roof collapse at the moranbah north underground mine in the bowen basin occurred on january 30 while anglo was relocating the focus of the mining operations known as a longwall move.

Grosvenor mine roof fall. Anglo s new measures to prevent grosvenor mine repeat. Anglo american was developing a new section to mine and it was in this area that the incident happened. The grosvenor mine development is a 2 billion greenfield project that will result in a state of the art long wall mining facility. Grosvenor mine begins to smoulder.

Weak roof is here defined as a roof sequence with a coal mine roof rating cmrr of 40 or roof rock with an unconfined compressive strength ucs of 3 500 psi mark et al. Queensland government mines inspectors are investigating a roof fall incident which occurred in a longwall development panel of anglo american s grosvenor underground coal mine near moranbah on 5 june which is believed to be related to reduced support density. Opinion i like many others in and out of the industry have gained a sense of uneasiness from anglo american s latest debacle with the grosvenor mine. Development roadways are mined 3 7m high by 5 4m wide.

Grosvenor mine is an underground longwall mine operation. The recent gas explosion that left five people injured two with very serious burns has left me in a state of shock. Two roadways are mined with cross access roads every 125m so the longwall can be adequately operated and maintained. Anglo american grosvenor mine explosion.

Roof fall surveillance data indicate that a disproportionately large percentage of roof falls come from mines with weak roof pappas and mark 2010. Mine blast findings released. Bengalla tyre fitter fatality learnings released. A key component of the development was the construction of two 1km segment lined tunnels to provide coal seam access.

Reforms fall short as industry mourns fallen miners zizi averill. Mining giant anglo americans grosvenor mine was plagued by safety problems as soon as it started operating including three roof collapses in three months an electric shock a fire underground. The explosion has now been followed by a spontaneous combustion event in the last week. Typically material stiffnesses fall into the low to.

8 x 2 1m roof bolts and 6 x 1 8m rib bolts.