rock strength parameters

См. также в других словарях:

• rock — rock1 rockless, adj. rocklike, adj. /rok/, n. 1. a large mass of stone forming a hill, cliff, promontory, or the like. 2. Geol. a. mineral matter of variable composition, consolidated or unconsolidated, assembled in masses or considerable… …   Universalium

• Rock — /rok/, n. a male given name. * * * I In geology, a naturally occurring and coherent aggregate of minerals. The three major classes of rock igneous, sedimentary, and metamorphic are based on the processes that formed them. These three classes are… …   Universalium

• 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 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

• 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

• International Society for Rock Mechanics — The International Society for Rock Mechanics (IRSM) developed general geotechnical description of rock masses. The aim of this classification is to characterise various regions that constitute a given rock mass.The ISRM classification is not… …   Wikipedia

• Direct shear test — A direct shear test also known as shearbox test is a laboratory or field test used by geotechnical engineers to measure the shear strength properties of soil[1][2] or rock[2] material, or of discontinuties in soil or rock masses.[3] …   Wikipedia

• Geotechnical investigation — Geotechnical investigations are performed by geotechnical engineers or engineering geologists to obtain information on the physical properties of soil and rock around a site to design earthworks and foundations for proposed structures and for… …   Wikipedia

• Standard penetration test — The standard penetration test (SPT) is an in situ dynamic penetration test designed to provide information on the geotechnical engineering properties of soil. The test procedure is described in the British Standard BS 1377 9:1990 and ASTM D1586.… …   Wikipedia

• Oceanic trench — Oceanic crust is formed at an oceanic ridge, while the lithosphere is subducted back into the asthenosphere at trenches. The oceanic trenches are hemispheric scale long but narrow topographic depressions of the sea floor. They are also the… …   Wikipedia

• Michael Lersow — (1993) Michael Peter Lersow (* 20. Dezember 1946 in Stralsund) ist ein deutscher Politiker (SPD) und Ingenieur. Inhaltsverzeichnis 1 …   Deutsch Wikipedia