Interrelationship of in-situ Rock Properties, Excavation Method, and Muck Characteristics
Semi-Annual technical rept. no. 1, 12 Jan-31 Jul 1971
HOLMES AND NARVER INC LAS VEGAS NV
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The report presents results of research to correlate the properties of in-situ rocks with materials handling properties of muck from excavation. Goals are to develop methods for predicting muck properties from rock properties and for selection of transport equipment through the Muck Designation Number concept. Muck sample, rock and operating data collection, testing methods, data storage and processing are described. Results include sample and data collection from eight sites, sample testing by commercial testing laboratories and the PMSRC, and development of raw data-printouts, and narrative-graphic summaries which are included. Samples are classified by operating method, rock strength, and lithology. Program phasing precludes detailed data analysis and conclusions at the present stage. Curves showing muck size distribution vary distinctly with operating methods Shield, TBMs, rock type Igneous, Metamorphic, and Sedimentary and rock strength High, Medium, Low, and Very Low.
- Geology, Geochemistry and Mineralogy
- Civil Engineering