Prediction of Underground Cavity Roof Collapse using the Hoek–Brown Failure Criterion
Prediction of Underground Cavity Roof Collapse using the Hoek–Brown Failure Criterion
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DOI：
10.1016/j.compgeo.2012.03.014
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发表时间：
2012-06
影响因子：
5.3
通讯作者：
A. Suchowerska;R. Merifield;J. Carter;J. Clausen
中科院分区：
文献类型：
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作者：
A. Suchowerska;R. Merifield;J. Carter;J. Clausen
地下洞室群顶板冒落的防治是岩土工程面临的一个挑战。在这项研究中，三个独立的方法已被用来评估一系列的几何形状和岩石性质的地下矩形腔的顶板坍塌。岩体强度用Hoek-Brown破坏准则描述。分析结果允许预测顶板坍塌，并确定岩体中形成的破坏面是否保持局部化或延伸至整个覆盖层深度。如果有覆盖空洞和估计地表沉降时，这是很重要的。
Preventing roof collapse in underground cavities is a challenge to geotechnical engineering. In this study, three independent methods have been used to evaluate the roof collapse of underground rectangular cavities for a range of geometries and rock properties. The rock mass strength has been described by the Hoek–Brown failure criterion. The results of the analysis allow for prediction of roof collapse and to determine whether the failure surface that develops in the rock mass remains localised or extends through the full depth of cover. This is of significance if there are overlying cavities and when estimating surface subsidence.