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首页> 外文期刊>South African Journal of Geology: Being the Transaction of the Geological Society of South African: Syndie die Verhandelinge van die Geologiese Vereniging van Suid-Afrika >GEOTECHNICAL INVESTIGATION FOR THE CONSTRUCTION OF A VAULT IN A ROCKFACE FOR THE PLACEMENT OF A GRAVIMETER AND A LONG PERIOD SEISMOGRAPH AT MATJIESFONTEIN, SOUTH AFRICA
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GEOTECHNICAL INVESTIGATION FOR THE CONSTRUCTION OF A VAULT IN A ROCKFACE FOR THE PLACEMENT OF A GRAVIMETER AND A LONG PERIOD SEISMOGRAPH AT MATJIESFONTEIN, SOUTH AFRICA

机译：南非MATJIESFONTEIN岩体中岩层构造的重力勘测和长周期地震勘探

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摘要

The aim of the project is to investigate the rock mass parameters at a site in the vicinity of Matjiesfontein (Western Cape Province) so as to ascertain the suitability for the construction of a vault in a rock face. This vault will host a permanent LaCoste and Romberg ultrasensitive gravimeter as well as a long period seismograph. The site is close to the contact between the Dwyka Formation of the Karoo Supergroup and the Witteberg Group, both part of the Cape Supergroup. A site survey, joint analysis, core logging and laboratory testing on rock specimens formed part of the geotechnical investigation. Laboratory tests included unconfined compression strength and point load tests. The data obtained from the fieldwork and laboratory analysis were used to determine the rock quality designation value of the rock, which was subsequently combined with the other parameters to obtain a rock mass rating. All data were utilised to develop a model for best practice construction (e.g. excavated vault in solid rock versus a concrete structure against rock face), as well as to develop a preliminary design for the vault. The results of the geotechnical investigation indicate that the site is suitable for the proposed project.
机译：该项目的目的是研究Matjiesfontein（西开普省）附近某地的岩体参数，以确定是否适合在岩面上建造穹顶。该金库将容纳永久性的LaCoste和Romberg超灵敏重力仪以及长期地震仪。该地点靠近卡鲁超级集团的德维卡组与维特伯格集团之间的接触，而维特伯格集团都是开普超级集团的一部分。岩土勘测的一部分是现场调查，联合分析，岩心测井和对岩石标本的实验室测试。实验室测试包括无侧限抗压强度和点载荷测试。从野外工作和实验室分析中获得的数据被用于确定岩石的岩石质量指定值，随后将其与其他参数结合以获得岩石质量等级。所有数据均被用于开发最佳实践构造的模型（例如，实心岩石中的拱顶相对于岩石面的混凝土结构），以及拱顶的初步设计。岩土工程调查的结果表明该场地适合拟议的项目。

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