Engineering Geology

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Figure 9.17 (a) Relationship between unsupported span and Q value (b) Bolt spacing estimation using the Q system, bolt spacing - m 2 of excavation per bolt, where the area per bolt is greater than 6 m 2 , spot bolting is implied. (c) Shotcrete and wire mesh support estimation using the Q system. Thickness of shotcrete in millimetres (mesh reinforcement in the shaded areas). Note that the very thick applications of shotcrete are not practical but values are included for completeness (after Stacey and Page, 1986). The support intensity in design charts (b) and (c) is appropriate for primary support; where long-term support is required, the design chart values should be modified as follows: (i) divide area per bolt by 2; (ii) multiple shotcrete thickness by 2. FOS = factor of safety. 497
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Engineering Geology
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Engineering Geology Second Edition
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Preface As noted in the Preface to
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Contents 1. Rock Types and Stratigr
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Contents Field Instrumentation 344
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Chapter 1 Rock Types and Stratigrap
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Chapter 1 several tens of metres bu
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Chapter 1 Figure 1.4 Distribution o
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Chapter 1 Figure 1.5 Lapilli near C
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Chapter 1 Figure 1.7 (a) Ropy or pa
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Chapter 1 Figure 1.8 Columnar joint
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Chapter 1 Figure 1.9 Pegmatite vein
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Chapter 1 Figure 1.10 Thin section
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Chapter 1 Figure 1.11 An old quarry
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Chapter 1 a b Figure 1.13 (a) Gneis
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Chapter 1 and the types of country
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Chapter 1 A variety of minerals suc
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Chapter 1 metasomatic activity is c
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Chapter 1 derived by partial intras
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Chapter 1 character (are they irreg
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Chapter 1 the top. Individual grade
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Chapter 1 Figure 1.20 Thin section
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Chapter 1 Montmorillonite [(Mg,Al)
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Chapter 1 Figure 1.22 Salt teepees
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Chapter 1 The extent and regularity
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Chapter 1 the lowest bed in the upp
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Table 1.1. The geological timescale
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Chapter 1 The principal way in whic
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Chapter 2 Geological Structures The
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Chapter 2 (b) Figure 2.2 (a) Block
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Chapter 2 (b) Figure 2.4 (a) Types
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Chapter 2 Figure 2.6 Chevron fold i
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Chapter 2 direction of extension. T
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Chapter 2 Figure 2.9 Types of fault
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Chapter 2 Figure 2.11 (a) Repetitio
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Chapter 2 side of a fault are of di
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Chapter 2 Figure 2.14 Geometric ori
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Chapter 2 As joints represent surfa
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Chapter 2 (several metres). The int
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Chapter 2 Strength of Discontinuous
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Chapter 2 Table 2.5. Classification
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73 Figure 2.17 Discontinuity survey
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Chapter 2 Figure 2.19 Representatio
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Chapter 3 Surface Processes All lan
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Chapter 3 humid regions more than d
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Chapter 3 Figure 3.3 Honeycomb weat
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Chapter 3 less soluble than limesto
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Chapter 3 Figure 3.4 The slake-dura
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Chapter 3 Because weathering brings
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Chapter 3 Figure 3.6 Approaches to
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Chapter 3 Figure 3.7 Valley bulging
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Chapter 3 Internal slides are usual
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Chapter 3 Figure 3.8 A classificati
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Chapter 3 Figure 3.10 Block diagram
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Chapter 3 direct factor in causing
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Chapter 3 Figure 3.14 (a) Trellised
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Chapter 3 Throughout its length, a
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Chapter 3 Figure 3.17 (a) Paired ri
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Chapter 3 Figure 3.18 Component par
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Chapter 3 In the early stages of ri
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Chapter 3 Karst Topography and Unde
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Chapter 3 Figure 3.22 Appearance of
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Chapter 3 the surface throughout th
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Chapter 3 Figure 3.25 Drumlins, nea
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Chapter 3 barrier, the threshold, o
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Chapter 3 Most melt water streams t
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Chapter 3 Other small ridge-like ka
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Chapter 3 of perennially frozen gro
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Chapter 3 Wind Action Wind erosion
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Chapter 3 Figure 3.32 Buttes and me
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Chapter 3 areas in which there is e
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Chapter 3 commonly falls in both in
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Chapter 3 Figure 3.35 Terminology o
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Chapter 3 disrupts their pattern of
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Chapter 3 is extended out to sea. B
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Chapter 3 (a) (b) Figure 3.37 (Cont
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Chapter 3 Table 3.2. Average beach
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Figure 3.38 Hurst Castle Spit with
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Chapter 3 windspeeds of approximate
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Chapter 3 Free oscillations develop
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Chapter 4 Groundwater Conditions an
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Chapter 4 Figure 4.1 Map of part of
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Chapter 4 buried upper surface of a
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Chapter 4 Table 4.2. Soil suction p
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Chapter 4 The factors affecting the
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Chapter 4 Table 4.3. Some examples
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Chapter 4 Permeability and porosity
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Chapter 4 Flow through Soils and Ro
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Chapter 4 General Equation of Flow
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Chapter 4 and k h H / k + H / k + H
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Chapter 4 Figure 4.8 Standard piezo
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Chapter 4 velocity of the upward se
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Geological mapping frequently forms
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Chapter 4 As groundwater moves from
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Chapter 4 Figure 4.9 Drillhole pack
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Chapter 4 Figure 4.10 Yield drawdow
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Chapter 4 Figure 4.11 Flow net bene
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Chapter 4 in sedimentary rocks. The
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Chapter 4 Figure 4.12 Gravel-packed
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Chapter 4 In addition, the fracture
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Chapter 4 to another as groundwater
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Chapter 4 Figure 4.14 An example of
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Chapter 4 Many of the VOCs are liqu
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Chapter 4 Table 4.7. Composition of
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Chapter 4 Migration control is cons
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Description, Properties and Behavio
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Chapter 5 Table 5.2.—Cont’d. In
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Chapter 5 Table 5.2.—Cont’d. In
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Chapter 5 Table 5.3b. Plasticity ac
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Chapter 5 Table 5.6. Mixed coarse s
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Chapter 5 reduced accordingly, henc
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Chapter 5 enough cement to develop
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Chapter 5 Figure 5.2 Particle size
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Chapter 5 this was indicative of me
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Chapter 5 Table 5.12. Particle size
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Chapter 5 Table 5.13. USAEWES class
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Chapter 5 Table 5.14. Range of comp
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Chapter 5 sensitivity, namely, inse
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Chapter 5 Table 5.15. Strength of w
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Chapter 5 They differ from laterite
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Chapter 5 (a) (b) Figure 5.7 (a) Po
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Chapter 5 supply of sand, the wind
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Chapter 5 Tills and Other Glacially
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Chapter 5 Figure 5.11 Variation in
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Chapter 5 Table 5.18a. A weathering
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Chapter 5 Table 5.19. Some properti
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Chapter 5 thick, or as ice wedges.
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Chapter 5 Figure 5.14 Increase in c
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Chapter 5 Organic Soils: Peat Peat
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Chapter 5 when peat possesses high
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Chapter 5 and the discontinuities t
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Genetic/group Metamorphic Igneous U
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Chapter 5 Table 5.25. Grades of unc
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Chapter 5 which lavas, pyroclasts a
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Chapter 5 preferred orientation. Ge
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Chapter 5 Table 5.30. Some geomecha
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Table 5.31. Some geomechanical prop
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Chapter 5 When a load is applied to
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Chapter 5 Furthermore, carbonate ro
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Chapter 5 water that drains into li
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Table 5.33. Some physical propertie
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Chapter 5 Evaporites The dry densit
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Chapter 5 suggest that the rock is
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Chapter 6 Geological Materials Used
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Chapter 6 one of the shortcomings o
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Stancliffe Buff Fine to Namurian me
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Chapter 6 drainage and escape of mo
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Chapter 6 Figure 6.2 Black crust de
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Chapter 6 Limestones show a variati
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Chapter 6 Figure 6.4 Coarse-grained
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Chapter 6 Usually, armourstone is s
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Chapter 6 The crushing strength of
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Chapter 6 the polishing action of t
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Chapter 6 a poor ability to absorb
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Chapter 6 crushing plant. After cru
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Chapter 6 Alluvial cones are found
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Chapter 6 Ball clays and china clay
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Chapter 6 Sulphate minerals in mudr
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Chapter 6 is to be extracted (Bell,
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Chapter 6 clay, or they may be brou
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Chapter 7 Site Investigation The ge
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Chapter 7 factors throughout this s
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Chapter 7 Infrared linescanning is
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Chapter 7 by satellites 800 km out
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Chapter 7 Table 7.2. Types of photo
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Chapter 7 Figure 7.1 Drillhole log.
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Chapter 7 Figure 7.2 Light cable an
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Chapter 7 Figure 7.3 Wash-boring ri
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Chapter 7 Figure 7.4 The general-pu
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Chapter 7 Figure 7.6 Section throug
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Chapter 7 Figure 7.8 Rotary percuss
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Chapter 7 Figure 7.11 Double-tube s
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Chapter 7 Figure 7.12 Standard pene
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Chapter 7 Figure 7.13 An electric p
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Chapter 7 Figure 7.15 Shear vane te
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Chapter 7 provide a sufficiently st
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Chapter 7 Figure 7.18 (a) Schematic
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Chapter 7 movements are needed in c
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Chapter 7 Figure 7.22 Borehole incl
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Chapter 7 hemispherical wave front
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Chapter 7 The most common arrangeme
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Chapter 7 Table 7.5. Resistivity of
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Chapter 7 Figure 7.25 Wenner and Sc
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Chapter 7 As a consequence, the met
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Chapter 7 Figure 7.26 Magnetometer
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Chapter 7 north-south distance, the
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Chapter 7 large SPs, whereas shales
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Chapter 7 the foundation conditions
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Chapter 7 Figure 7.29 Geomorphologi
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Chapter 7 purpose, have a larger sc
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Table 7.7a. Excerpts from the engin
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6b Chiefly Widespread in 10-13, 18-
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Table 7.8. Advantages and disadvant
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Chapter 8 Geology, Planning and Dev
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Chapter 8 It therefore is important
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Chapter 8 If there are no mitigatio
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Chapter 8 Figure 8.2 (a) An example
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Chapter 8 to nueés ardentes, the e
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387 Figure 8.3 (a) Preliminary haza
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Chapter 8 An earthquake propagates
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IX Ruinous. General panic. Masonry
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Chapter 8 standing in earthquakes t
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Chapter 8 In earthquake prone areas
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Chapter 8 Figure 8.7 Microseismic z
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Chapter 8 Figure 8.8 Landslide susc
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Chapter 8 concentrated into channel
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Chapter 8 magnitude or greater occu
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Chapter 8 occurs on average once in
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Chapter 8 Figure 8.12 Revetment com
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Chapter 8 Dunes act as barriers, en
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Chapter 8 Artificial replenishment
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Chapter 8 Figure 8.16 A breakwater
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Chapter 8 record of tsunamis is req
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Chapter 8 Movement of sand can bury
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Table 8.3. Objectives and methods o
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Chapter 8 Soil erosion by water is
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Chapter 8 The redistribution and re
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Chapter 8 Figure 8.19 Cellular cons
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Chapter 8 recommended that at dry s
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Chapter 8 Disposal of liquid hazard
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Chapter 8 any heat produced by radi
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Chapter 8 Tailings may also contain
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Chapter 8 The mining method is a ve
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Chapter 8 Figure 8.25 An example of
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Chapter 8 has passed by, the ground
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Chapter 8 Figure 8.27 Earth fissure
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Chapter 8 Figure 8.28 A tension sca
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Chapter 8 sinkholes and produced di
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Chapter 8 Figure 8.30 A survey of d
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Chapter 8 Figure 8.31 The Big Hole,
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Chapter 8 with various previous use
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Chapter 9 Geology and Construction
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Chapter 9 and there is no alternati
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Chapter 9 The ease of drilling in r
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Figure 9.1 Charge Q as a function o
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Table 9.1. Rippability rating chart
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Chapter 9 Table 9.2. Density, bulki
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Chapter 9 Figure 9.6 Dentition and
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Chapter 9 Figure 9.8 Reinforced ear
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Chapter 9 (a) (b) Figure 9.10 (a) S
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E n g i n e e r i n g G e o l o g y
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532 Table 9.8. Typical compaction c
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I n d e x coastal protection, 410,
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I n d e x grout, 526, 548 groutabil
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I n d e x rebound, 513 recumbent fo
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