The quantitative determination of the geological strength index (GSI) and disturbance factor
(D) in the Hoek–Brown failure criterion is of great value because it can increase the …

Tunnel excavation by cyclic blasting caused accumulative damages to the surrounding
rocks, reducing the intactness of the rock mass. The blasting impact contributes to the …

In order to solve the problems of large deformation and cracking of the fractured slate tunnel
lining, a tunnel stability evaluation method that can be used for fractured slate tunnels is …

The elastic modulus of rock is the key parameter in excavation deformation prediction,
support design, and the stability analysis of underground engineering. However, traditional …

The drill and blast method is one of the most widely used techniques for excavation of
tunnels in rock masses. The most worrying issue in this method is unfavorable damage …

Quantitative determination of the important parameters in the Hoek–Brown (HB) failure
criterion, ie, geological strength index (GSI) and disturbance factor (D), is essential for …

Hoek–Brown criterion is one of the most widely used strength criteria in the field of rock
engineering, which can reflect the nonlinear empirical relationship between the ultimate …

The strength, deformation characteristics and failure mechanism of tunnel surrounding rock
are affected by the rock mass discontinuity. In order to explore the influence of the existence …

It is very important to obtain the mechanical paramerters of rock mass for excavation design,
support design, slope design and stability analysis of the underground structure. In order to …

Tight clastic reservoirs are an important aspect of hydrocarbon exploration and development
worldwide. The Xu5 section of the Upper Triassic Xujiahe Formation in the western Sichuan …