Engineering classification of karst ground conditions
Engineering classification of karst ground conditions
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DOI：
10.1144/1470-9236/2002-33
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发表时间：
2003-05-01
影响因子：
1.4
通讯作者：
Fookes, PG
中科院分区：
文献类型：
--
作者：
Waltham, AC;Fookes, PG
在世界范围内，石灰石和石膏被自然沃茨溶解，形成了广泛的喀斯特地貌，这对土木工程师来说是非常困难的。洞穴威胁着地基的完整性，特别是在它们的宽度大于屋顶厚度的地方。塌陷坑问题很多，可分为六种类型，其中包括岩溶区土壤覆盖层中形成的塌陷坑。岩头形态从均匀到尖峰，也创造了难以挖掘或发现的地面。一个提议的岩溶工程分类定义了各种复杂的地面条件的地质灾害，他们提供，主要是洞穴，天坑和岩头救济。地面调查技术和基础的设计理念被认为是，使他们适合不同类别的岩溶提供的地面条件。
On a world scale, the dissolution of limestone and gypsum by natural waters creates extensive karst landforms that can be very difficult ground for civil engineers. Caves threaten foundation integrity, notably where their width is greater than their roof thickness. Sinkholes pose many problems, and are classified into six types, including subsidence sinkholes formed in soil cover within karst terrains. Rockhead morphology varies from uniform to pinnacled, also creating difficult ground to excavate or found upon. A proposed engineering classification of karst defines various complexities of ground conditions by the geohazards that they provide, mainly the caves, sinkholes and rockhead relief. Ground investigation techniques and foundation design philosophies are considered so that they are appropriate to the ground conditions provided by the different classes of karst.