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In the risk evaluation of a highway tunnel, the recognized risk factors are categorized into two hierarchies. The first hierarchy consists of seven items, which are topography, geology, unfavorable geological condition, special stratigraphy, structural design, tunnel section and depth of embedment, shafts and pilot tunnels. An Analytic Hierarchy Process model is established to prioritize the risk...
Rock burst is a phenomenon that the surrounding rock-chip/block blast and disperse under the condition of high stress field or the driving force for excavation in highway tunneling process, exhibited as rocks flaking off from the tunnel wall. By analyzing the influencing degree of rock burst influencing factors, a criterion is proposed to be deployed to predict rock burst risks in the preliminary...
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