Microseismicity of an Unstable Rock Mass: From Field Monitoring to Laboratory Testing
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DOI: 10.1002/2017jb014612
Abstract: The field-scale microseismic (MS) activity of an unstable rock mass is known to be an important tool to assess damage and cracking processes eventually leading to macroscopic failures. However, MS-event rates alone may not be… read more here.
Keywords: field; mass; microseismicity unstable; rock mass ... See more keywords
Evaluation of effect of rock mass properties on fragmentation using robust techniques
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DOI: 10.1007/s00366-017-0537-7
Abstract: In the civil and mining projects, blasting operation is important from technical and economical point of view. There are several parameters which affect the result of operation such as desired fragmentation and undesired phenomena, e.g.,… read more here.
Keywords: mass properties; rock mass; operation; evaluation effect ... See more keywords
Method for Measuring Rock Mass Characteristics and Evaluating the Grouting-Reinforced Effect Based on Digital Drilling
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DOI: 10.1007/s00603-018-1624-9
Abstract: Various types of broken rock masses, such as those in fault-fracture zones and fracture zones, which form as a result of disturbance from tunnelling, are often encountered during underground engineering construction. These rock masses have… read more here.
Keywords: rock mass; mass characteristics; rock; digital drilling ... See more keywords
Numerical Investigation of Squeezing in Underground Hard Rock Mines
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DOI: 10.1007/s00603-018-1632-9
Abstract: Squeezing ground is one of the major challenges associated with deep, high-stress mining. In underground hard rock mines, these conditions are often a result of the presence of prominent structural features such as foliation inside… read more here.
Keywords: hard rock; underground hard; rock mass; rock ... See more keywords
Effects of Jointed Rock Mass and Mixed Ground Conditions on the Cutting Efficiency and Cutter Wear of Tunnel Boring Machine
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DOI: 10.1007/s00603-018-1667-y
Abstract: The cutting efficiency and wear of tunnel boring machine (TBM) cutters are two important parameters commonly used to estimate the boring performance and lifetime of the TBM in the tunneling process. These problems have been… read more here.
Keywords: cutting efficiency; rock mass; cutter wear; cutter ... See more keywords
Investigating Hydraulic Fracturing Complexity in Naturally Fractured Rock Masses Using Fully Coupled Multiscale Numerical Modeling
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DOI: 10.1007/s00603-019-01851-3
Abstract: Naturally fractured rock mass is highly inhomogeneous and contains geological discontinuities at various length scales. Hydraulic fracture stimulation in such a medium could result in complex fracture systems instead of simple planar fractures. In this… read more here.
Keywords: fracture; fractured rock; rock mass; hydraulic fracturing ... See more keywords
Identification of structural domains by considering multiple discontinuity characteristics: a case study of the Songta Dam
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DOI: 10.1007/s10064-017-1024-5
Abstract: Discontinuities formed by different geological processes strongly affect the inhomogeneity of a rock mass. Demarcation of statistically homogeneous regions is useful to speculate the tectonic evolution history. Therefore, a new method is introduced to divide… read more here.
Keywords: discontinuity characteristics; structural domains; rock mass; multiple discontinuity ... See more keywords
The influence of flowing water coupling condition on the result of rock mass acoustic test
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DOI: 10.1007/s10064-017-1049-9
Abstract: Control of blasting induced damage zone is one of the important topics in hydropower project construction, and the acoustic test method is commonly used to discriminate the blasting induced damage zone. However, the acoustic test… read more here.
Keywords: test; water; rock mass; flowing water ... See more keywords
Deterioration of weak rocks over time and its effect on designing tunnel support systems
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DOI: 10.1007/s10064-017-1154-9
Abstract: The long-term behavior of rock mass plays a vital role in the overall stability of underground structures. One possible long-term scenario is the degradation of the rock mass, especially in unstable clay-bearing rocks susceptible to… read more here.
Keywords: term; long term; time; rock mass ... See more keywords
Slope stability assessment of an open pit mine using three-dimensional rock mass modeling
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DOI: 10.1007/s10064-017-1175-4
Abstract: Rock mass classification systems are commonly used to evaluate the likelihood of instability in mining environments. Most frequently used classification systems are the rock mass rating (RMR), geological strength index (GSI), and the Q-system. These… read more here.
Keywords: open pit; rock; mass; rock mass ... See more keywords
A comparative study of GSI chart versions in a heterogeneous rock mass media (Marão tunnel, north Portugal): a reliable index in geotechnical surveys and rock engineering design
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DOI: 10.1007/s10064-019-01481-7
Abstract: The rock mass quality in underground excavations and or tunnelling is a key issue in the design of the most suitable support to ground stability. This work aims to discuss the applicability of the latest… read more here.
Keywords: design; study; rock mass; rock ... See more keywords