<p>While mining the approved stope sequence in the 100/900 ore bodies at the North Mine in Sudbury Basin of Vale Inco Ltd and following a crown blast in one of the stopes in 100 orebody in a sill pillar area, several major seismic events, with the highest ...

<p>The increased use of underground space for transportation systems and the increasing complexity and constraints of constructing and maintaining above ground transportation infrastructure have prompted the need to develop this technical manual. This FHWA ...

<p>More and more old dams are operated for more than 50 years. Evaluation on the life span and the real safety status becomes a challenging task for the dam society, especially for China because of more than 6000 dams to be evaluated and rehabilitated within ...

Tunnelling induced deformations of a historic building, Chongsi Building, in Shanghai, China, are reported. The construction site located in Xuhui District, along the Metro line 11, and at the site the thickness of soft soil layer, soft clay and clayey silt, ...

<p>A design approach is discussed for the structural rehabilitation of concrete lined tunnels. Depending on the severity of damage, and on the causes that produced it, three levels of rehabilitation are illustrated. They range from light repairs of the inner ...

The purpose of this manual is to provide highway and rail transit tunnel owners guidance for establishing procedures and practices for the inspection, documentation, and priority classification of deficiencies for various elements that comprise an existing ...