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Engineering Properties of Clay Seams within the Waitemata Group Rocks of Auckland

机译：奥克兰怀塔玛塔群岩石内的粘土层工程特性

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Soft, extremely weak, bedding-parallel clay seams have been identified in investigation bores, shafts and excavations in Waitemata Group rocks throughout Auckland. The seams ( < 1mm to 15mm thick) are likely to have formed by flexural slip at the time of folding and, in combination with other joints, faults and bedding planes, exert some control on site stability. Testing indicates an average shear strength of c′ = 13 kPa and o′ = 13″ and lower bound parameters of c′ =0 kPa and o′ = 8 kPa.

机译：在整个奥克兰的Waitemata Group岩石的调查钻孔，竖井和开挖中已经发现了柔软，极弱，平行于顺层的粘土接缝。接缝（<1mm至15mm厚）在折叠时很可能是由挠曲滑移形成的，并且与其他接缝，断层和层理面一起，对现场稳定性起到了一定的控制作用。测试表明平均剪切强度为c'= 13 kPa和o'= 13”，下界参数为c'= 0 kPa和o'= 8 kPa。

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来源
《To the eNZ of the Earth vol.2》|2004年|P.46.1-46.5|共5页
会议地点 Auckland(NZ)
作者
A L Williams; D V Toan; W M Prebble;
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作者单位

Beca Carter Hollings Ferner Ltd, New Zealand;

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原文格式 PDF
正文语种 eng
中图分类地质力学;
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Engineering Properties of Clay Seams within the Waitemata Group Rocks of Auckland

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