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28 May 2019
Gongo Soco mine: another potential tailings dam failure in Brazil
In Brazil another tailings dam, at the Gongo Soco mine in Barão de Cocais to the east of Belo Horizonte, is at risk of failure due to a rock wall collapse.
25 March 2019
Sul Superior: another Vale tailings dam at risk of imminent collapse in Brazil
Brazilian mining company Vale warned on Friday that the Sul Superior tailings dam, at the Gongo Soco mine in Minas Gerais, is at risk of imminent collapse
4 February 2019
The speed of the Brumadinho tailings dam landslide
The two important videos showing the Brumadinho tailings dam landslide allow some estimates to be made of the speed of the movement.
18 January 2019
Hidroituango: the complex geology behind the major problems in the mountain
Hidroituango: the complex geology behind the problems in the mountain, with suggestions that the powerhouse cavern might lie at the intersection of 2 faults
7 December 2018
The Guazi landslide: an interesting ancient landslide reactivated by a hydroelectric power scheme in China
The Guazi landslide: an interesting ancient landslide reactivated by a hydroelectric power scheme in China, as described in the journal Landslides
18 June 2018
Hidroituango: a substantial step towards reducing the immediate risk
Yesterday the operators of the dam at Hidroituango announced that the crest of the structure has reached 415 m. This is a substantial step towards increasing the safety of the site
11 June 2018
Hidroituango – continued small landslides, and proposals for a way forward
Yesterday a small landslide at the Hidroituango dam site led to the evacuation of some of the workers on the site. Operations continue to manage the situation whilst waiting for the end of the rainy season, and an expected fall in the river level
6 June 2018
Hidroituango: the potential for extremely large landslides?
News reports from Colombia say that an American technical report (possibly by USACE) suggests that landslides of up to 40 million cubic metres are possible at Hidroituango. As the report is not publicly available it is hard to know how to interpret these reports
5 June 2018
Hidroituango – an increase in movement rate
Reports in the last few hours suggest that the landslide at the Hidroituango dam site has accelerated, and has now exceeded the 10 mm per hour warning threshold. Meanwhile, three scenarios for failure of the dam have been described by the international advisors.
4 June 2018
Hidroituango – continued slope movements and low volume seepage from the dam
In the last 24 hours there have been further developments at the Hidroituango dam site in Colombia. Monitoring suggests that movements of the slope continue, whilst concerns are being raised about low volume seepage from the dam
Dave Petley is the Vice-Chancellor of the University of Hull in the United Kingdom. His blog provides commentary and analysis of landslide events occurring worldwide, including the landslides themselves, latest research, and conferences and meetings.
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