Construct · 1 fields · 1 citations

key block: a standalone construct

One name. One construct. A landmark on the map.

● anchor · a standalone construct Nearest construct by meaning·not indexed
key block1 CONSTRUCTKey block (rock)BLOCK THEORY · REMOVABLE

A single standalone construct; nearby constructs are located against it in the Collider. Tap a field for its definition, unit, and measures.

Rock engineering

The critical removable block that controls an excavation

In rock engineering a key block is the critical removable block formed where discontinuities intersect an excavation surface: it is kinematically free to move, and because neighbouring blocks lean on it, stabilising it can hold up a far larger volume of rock. Block theory identifies which blocks are removable and which of those are the key blocks that must be bolted or supported first. Goodman and Shi's Block Theory and Its Application to Rock Engineering founded this analysis. The referent is the load-controlling block in a jointed rock mass, unrelated to the outline block of a woodcut beyond the shared name.[1]

Unit
The critical removable block that governs stability of a rock excavation
Recovery means
Not applicable
Measured by
Identified by block-theory analysis of joint orientations and the free surface, and by the support required to fix it

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Nearby constructs

block3 fields · 6 citationsjingle · one word, three constructserror4 fields · 8 citationsjingle · one word, four constructsmass3 fields · 9 citationsjingle · one word, three constructs

References

  1. Goodman, R. E., & Shi, G. (1985). Block theory and its application to rock engineering. Prentice-Hall. ISBN 9780130781895

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