Rock mass discontinuity
Webdifferent rock types and discontinuity conditions, the power q in Eq. 26 may vary significantly from the value ... rock mass deformation modulus and strength of jointed hard rock Web15 Dec 2024 · For natural rock mass discontinuity, the heaves on the surface of discontinuity have the same strength with rock mass under the condition of nonfilling. However, it is very difficult to guarantee that there is only a small difference in strength for the heaves and rock mass.
Rock mass discontinuity
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WebRock mass classification schemes have been developing for over 100 years since Ritter (1879) attempted to formalise an empirical approach to tunnel design, in particular for … Web12 Apr 2024 · To determine and compare the measurement uncertainty of different geological-geotechnical testing methods, numerous test locations were selected in a hard rock quarry. Measurements were carried out along two vertical measurement lines perpendicular to the mining levels of an existing exploration. Along these lines, the rock …
Web26 Jul 2024 · Geological discontinuity is normally recognised as a general term to describe any mechanical break (lacking significant tensile strength) within rock masses, including most joints, weak bedding planes, weakness zones and faults (ISRM, 1978). Web2 May 2024 · Other researchers have analyzed the effect of stresses on rock mass permeability, founding empirical relations between discontinuity permeability and confining pressure. Due to increased confining pressure with depth, decreased rock mass permeability with depth is to be expected (e.g., Carlsson and Olsson 1977 , 1993 ; Lee and Farmer 1993 …
WebDiscontinuities are classified into five surface conditions that are similar to joint conditions in RMR ( Chapter 6 ). 1. Very good 2. Good 3. Fair 4. Poor 5. Very poor A 6 × 5 block in the matrix of Figure 26.1 is picked up first according to actual and undisturbed rock mass classification and discontinuity surface condition. Web13 May 2024 · This study wants to give a contribution to the semi-automatic evaluation of rock mass discontinuities, orientation and spacing, as important parameters used in Engineering. In complex and inaccessible study areas, a traditional geological survey is hard to conduct, therefore, remote sensing techniques have proven to be a very useful tool for …
Webtive to the surrounding rock mass (Bell, 1993, p. 37; Brady and Brown, 1993, pp. 52 53; Priest, 1993, p. 1; Hudson and Harrison, 1997, p. 20). ... host rock, for example, that are stronger and/or stiffer than their surroundings might not be considered as a discontinuity by a rock engineer. Pollard and Segall (1987) defined a discontinuity as ...
Web1 Apr 2024 · Discontinuity is critical in the strength, deformation, seepage, and stability of rock mass (Chen et al., 2024a; Feng et al., 2024). The acquisition of the geometric parameters of discontinuity is an important prerequisite for … starlite philippinesWeb1 Apr 2024 · Rock discontinuities significantly influence the deformation as well as strength of rock masses. Identification of rock discontinuity sets is one of the fundamental issue … peterman photography \\u0026 videoWeb14 Jan 2024 · Geological characteristics of the rock mass such as lithology, fracture orientation, and morphology, karst phenomena (caves), rock weathering, and so forth can be detected by acquiring high-quality drill hole wall images [11,13]. In this paper, statistical analysis of the fracture pattern data obtained by borehole camera technology was … starlite pharmacyWeb29 Jan 2024 · A rock mass discontinuity is a fundamental element of a rock mass structure that regulates its mechanical and hydrogeological properties and has significant … starlite party busWebRock mass is a matrix consisting of rock material and rock discontinuities. Its characterization and classification aim to determine the rock mass characteristics by assigning values to a set of rock parameters. The behavior of intact rock material can be determined by continuum mechanics but rock masses are usually highly fractured. peterman productionsWeb28 May 2024 · Discontinuities include all types of mechanical break or plane of weakness in rock masssuch as joints, bedding plane, fractures and shear zones that weakened the … starlite pines home associationWeb1 Jan 2024 · Discontinuity condition, namely: persistence, tightness, aperture, roughness, infill type, filling thickness of the discontinuities also govern the water flow rate through a rock mass as well as affecting rock mass strength. In- situ stress also influences water flow. starlite photography