- rock quality designation classification
- классификация пород по их нарушенности
Англо-русский строительный словарь. 2013.
rock quality designation classification
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Rock Quality Designation — (RQD) was developed in 1964 by D. U. Deere. It is based on measuring core recovery percentage which incorporates only pieces that are greater than 100 mm in length. In this respect pieces of core that are not hard and sound should not be counted… … Wikipedia
Rock mass classification — In geotechnical engineering, the first major rock mass classification system was proposed about 60 years ago for tunnelling with steel support. Later classification systems were developed for non steel support underground excavation, slope and… … Wikipedia
Rock Mass Rating system — The Rock Mass Rating (RMR) system is a geomechanical classification system for rocks, developed by T.Z. Bieniawski between 1972 and 1973. Definition The following six parameters are used to classify a rock mass using the RMR system #Uniaxial… … Wikipedia
Rock Creek (Potomac River) — Rock Creek is a free flowing tributary of the Potomac River, which empties into the Atlantic Ocean via the Chesapeake Bay. The creek is about 33 miles (53.1 km) long, with a drainage area of about 76.5 mi² (198 km²). The last quarter mile (402… … Wikipedia
Mining rock mass rating — Laubscher developed the Mining Rock Mass Rating (MRMR)[1][2][3][4][5] system by modifying the Rock Mass Rating (RMR) system of Bieniawsk … Wikipedia
Core recovery parameters — describe the quality of core recovered from a borehole. Contents 1 Total core recovery 2 Solid core recovery 3 Rock quality designation 3.1 Classificat … Wikipedia
RMR-Wert — Der RMR Wert oder RMR Index (Rock Mass Rating) ist ein Klassifizierungssystem für Felsgestein. Er wurde 1972/1973 von Z. T. Bieniawski entwickelt. Das System wird in der Geotechnik bei Tunneln, Kavernen, Bergwerken, Böschungen, Fundamenten usw.… … Deutsch Wikipedia
Q-system — For the linguistics formalism, see Q systems. The Q system of rock mass classification was developed in Norway in 1974 by Nick Barton, Lien, R., and Lunde, J at NGI (Norwegian Geotechnical Institute). The system was developed on the basis of an… … Wikipedia
Grade (climbing) — Rock climbing History Styles Technique Equipment and protection Grades (difficulty of climb) Terminology Belaying Abseiling … Wikipedia
biblical literature — Introduction four bodies of written works: the Old Testament writings according to the Hebrew canon; intertestamental works, including the Old Testament Apocrypha; the New Testament writings; and the New Testament Apocrypha. The Old… … Universalium
china — /chuy neuh/, n. 1. a translucent ceramic material, biscuit fired at a high temperature, its glaze fired at a low temperature. 2. any porcelain ware. 3. plates, cups, saucers, etc., collectively. 4. figurines made of porcelain or ceramic material … Universalium
