|
Abstract Following the principle of similarity，using reduced scale structures，taking the slag as a source for straight ramp-start simulation test，the quantitative correlations of the grain composition，slope gradient and the critical water content which are the main influential factors of mine debris flow are studied. The tests indicate when the grain composition is constant，the larger the slope gradient is，the lower the critical water content is. And it is also shown that the water-bearing slag is easier to start than the dry slag. For the slag on the slope，when the saturation is certain，as long as the slope gradient is large enough，the slag will be able to start and form debris flow. When the content of the fine material in the slag reaches 28%，the slag is the most vulnerable to start. The greater the mass of the slag is，the higher the slag heaps，and the easier the slag stars. The slagheap with triangular section is easier to start than that with other sections.
|
|
Received: 18 November 2008
|
|
|
|
