Grosvenor Mine Roof Fall

Underground at anglo american s moranbah north mine in queensland.

Grosvenor mine roof fall.

The miners were reportedly working at a. Typically material stiffnesses fall into the low to moderate modulus ratio range. Grosvenor mine is an underground longwall mine operation. A key component of the development was the construction of two 1km segment lined tunnels to provide coal seam access.

The recent gas explosion that left five people injured two with very serious burns has left me in a state of shock. The explosion has now been followed by a spontaneous combustion event in the last week. The roof fall occurred in the early hours of january 30 when the mine was in a longwall move. 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.

Anglo s grosvenor mine had three unexpected roof falls in three months in 2016 with miners narrowly escaping from the first on june 5 shortly after 10pm. Anglo american was developing a new section to mine and it was in this area that the incident happened. 8 x 2 1m roof bolts and 6 x 1. Development roadways are mined 3 7m high by 5 4m wide.

The company has notified the queensland mines inspectorate and other mining operations at site are continuing as normal. The ability to deter mine roof fall risk has been a long standing goal of safety professionals and could provide the kind of information needed by on site personnel responsible for worker safety to mitigate roof fall injuries. The roof failed as the senior mine worker was again reading the telltale the queensland government mine record entry report says. Anglo american has confirmed a geotechnical issue at its moranbah north longwall mine in queensland during development works led to a roof fall incident on friday.

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. Two miners have died in a ukraine coal mine following a roof fall on 29th may 2019. Two roadways are mined with cross access roads every 125m so the longwall can be adequately operated and maintained. The grosvenor mine development is a 2 billion greenfield project that will result in a state of the art long wall mining facility.

Discusses a method to determine the roof fall risk using a qualitative risk analysis technique. 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.