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楼主: cerebral-cortex
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Finanzierung innovativer Unternehmen,ngineering is quite different to that in most other branches of engineering. Factors that contribute to this situation in general practice and, more specifically, in an underground environment are presented. The state of the art is reviewed and supported by an appendix that provides a brief history
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Einordnung der Ergebnisse und Ausblick,pplied mechanics that control rock deformation and underpin ground engineering. The more fundamental of these are developed from first principles in the remainder of the chapter under the headings of rock mass fabric; physical parameters; material properties; rock mechanics; analysis techniques; and
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https://doi.org/10.1007/978-3-030-12247-8workings. This forms the basis for designing mine workings in manners that not only avoid exposure to excessively high stress concentrations but also provide opportunities to exploit stress relief methods on both a local and regional scale..Issues examined in this chapter include chain pillar design
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Organisation des Patentmanagements,tems under the headings of standing support; tendon support and reinforcing elements; surface restraint systems; spiling; strata binders; and void fillers..A considerable portion of the chapter is devoted to the anchorage methods for tendon support systems as these play a critical role in tendon per
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Grundlagen von gewerblichen Schutzrechten,and photographs of these in underground coal mines..Consideration is then given to a range of theoretical and operational aspects relating to roof support and reinforcement. These include the applicability and scope of classical beam theory; the role and timing of the installation of long centre ten
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