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Since the compressive strength of a corpus depends on the experimental standard and does thus not represent a clear unit, the uniaxial compressive strength of a rock should always be determined by means of a uniaxial pressure test according to DIN 18316 [DIN18316]. The uniaxial compressive strength of rock can by estimated by means of field tests according to EN ISO 14689 [ [DINENISO14689-1:2004]. (Table: Field tests to estimate the uniaxial compressive … |
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Sep 23, 2008 Utility Tunnelling - Geotechnical investigations Soil and rock classification related to trenchless installation (Table: European standards for soil and rock classification in connection with trenchless installation of pipelines [FI-Steina]) |
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Sep 23, 2008 Utility Tunnelling - Geotechnical investigations Soil and rock classification related to trenchless installation
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Sep 23, 2008 Utility Tunnelling - Geotechnical investigations Soil and rock classification related to trenchless installation
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Sep 23, 2008 Utility Tunnelling - Geotechnical investigations Soil and rock classification related to trenchless installation
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Sep 23, 2008 Utility Tunnelling - Geotechnical investigations Soil and rock classification related to trenchless installation (Image: Diagram of soil and rock classification in accordance with DIN 18319 [DIN18319]) |
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Sep 23, 2008 Utility Tunnelling - Geotechnical investigations Soil and rock classification related to trenchless installation
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Sep 23, 2008 Utility Tunnelling - Geotechnical investigations Soil and rock classification related to trenchless installation (Table: Classes F: Rock material [DIN18319]) |
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Sep 23, 2008 Utility Tunnelling - Geotechnical investigations Soil and rock classification related to trenchless installation
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Sep 23, 2008 Utility Tunnelling - Geotechnical investigations Soil and rock classification related to trenchless installation
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Sep 23, 2008 Utility Tunnelling - Geotechnical investigations Soil and rock classification related to trenchless installation (Table: Classification of different types of soils according to steerability) |
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Sep 23, 2008 Utility Tunnelling - Geotechnical investigations Soil and rock classification related to trenchless installation This classification proposal by Spang [Spang87] that can be used especially for pipe jacking with shield machines with partial excavation by hand (hand shields) or with mechanial partial excavation, is based on a classification system for tunnel construction in soil described in [Proct77]. (Table: Classification according to the working face behaviour) |
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Sep 23, 2008 Utility Tunnelling - Geotechnical investigations Soil and rock classification related to trenchless installation
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Sep 24, 2008 Utility Tunnelling - Geotechnical investigations Soil and rock classification related to trenchless installation The abrasiveness of a rock material is dependent on numerous parameters, among which are:
[Thuro98b] |
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Sep 24, 2008 Utility Tunnelling - Geotechnical investigations Soil and rock classification related to trenchless installation
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The crust of the earth consists mostly of rock materials that are made up of naturally formed quantities of different minerals (mineral aggregates) or of only one mineral type. This can occur as soil or as rock and sometimes of both in sequence. Soil occurs through the weathering of rock. It exists either in original strata (weathered soils) or has been transported by wind, water or ice and deposited (sediments) (Abschnitt 4.5.1) [Soos96]. Rock is … |
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With non-cohesive soils, the individual particles or parts of the rock material form an agglomeration that possesses a measure of strength due to the friction of the particle surfaces. Their properties are influenced by the particles size, particle size distribution, particle form and particle roughness. Depending on the base material, they are often resistant to weather conditions. According to DIN 1054 [DIN1054:2005], the non-cohesive soils comprise … |
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With cohesive soils, the particles adhere to each other due to electrostatic surface forces and thus form an interconnected formable mass. Their properties (strength behaviour) are influenced largely by the water content, the particle size and the clay mineral content (Abschnitt 4.3.1.5). They are sensitive to weathering. According to DIN 1054 [DIN1054:2005], this type of soil comprises clays, clayey silts, and silts (e.g. sandy clay, sandy silt, … |
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According to DIN 1054 [DIN1054:2005], this type of soil comprises peat or sapropel and inorganic soils with organic admixtures of animal or plant origin (Tabelle 4.3.1.1.3), when the weight percentage is more than 3% or 5% (e.g. sand containing humus, sapropel, or sand containing peat, organic silt or clay, loam). Depending on the degree of decay, such soils possess a fibrous, fleecy or earthy texture and a high degree of water retention or water … |
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