Zpravodaj Hnědé uhlí 2016, 56(3)
Deep penetrating probes on the internal dump of the surface mine Jiří
Every penetrating probe that meets deep condition h > 50 m can generally be considered as a deep. The article, however, deals with penetrating probes, which are close to the depth of 100 m or even exceed it. The location of interest currently achieves in its central part the thickness of 120 m. The company Penetra, s.r.o. has developed the technology to implement extremely deep penetration probes, so that even for this thickness of the dump they are able to provide measurements, which fulfils its purpose. The tables document the development of an unprecedented large-scale penetration survey of the internal dump Jiří, which makes this dump the most surveyed internal dump in the Czech Republic with nearly 39 kilometres of penetration measurement. Of the 807 penetration probes, which were carried out between 1993 and 2015 in the area of internal dump Jiří, 18 probes achieved the depth threshold h > 100 m. In the case of the probe SPJ 36/18 from 2013 (h = 114.0 m), there was created the record at a depth of penetration probe in the Czech Republic. Within the framework of the penetrating measurements on the internal dump George, the formation of a plastic core, that begins to create at the base of the dump exceeding the limiting value of the dump thickness, was captured. The conclusion of the paper provides the comparison of the field and laboratory measurements options, both from a financial and time aspects as well.
Keywords: geotechnical exploration, penetration, penetration resistance, inner dump Jiří, plastic core of dump
Published: September 1, 2016 Show citation