2 edition of in-situ testing of rock deformability found in the catalog.
in-situ testing of rock deformability
O. C. Zienkiewicz
|Statement||(by O. C. Zienkiewicz and K. G. Stagg.|
|Series||CERA research report -- 2.|
|Contributions||Stagg, Kenneth Geoffrey.|
|The Physical Object|
|Pagination||54 p. :|
|Number of Pages||54|
pressure test. Calculate Rock Deformation Properties.-Using the recorded volume and pressure changes, the in situ modulus of deformation of the rock mass and other rock properties are calculated. 4. Significance and Use Input Parameters for Feature Stability.-Prediction of rock mass deformability, creep characteristics. Equipment that is frequently used for this is illustrated with emphasis on common techniques in situ and in the laboratory. Results of extensive testing on soft rocks are presented with emphasis on the testing of a very heterogeneous conglomerate rock mass at a dam site in Japan.
Rock testing 1. MODULE 4 LABORATORY AND FIELD TESTING OF ROCKS Ms. Anjana R Menon,, Dept of Civil Engg 2. OVERVIEW • Laboratory tests: • Tension- Split tensile / Brazilian test • Shear –UCC and Triaxial test • Flexure- Beam bending test • Elastic Modulus by Brazilian and bending tests • Insitu tests: • Deformability- PLT, Uniaxial jacking, Pressuremeter • . The in-situ deformability of rocks and the state-of-stress must be known for the analysis and design of surface and underground structures. This paper presents a method for determining the in-situ deformability of rock-masses using friction gages.
(Which In-situ test should I use–a designer’s guide) Company Profile. Founded by Roger A. Failmezger, P.E., F. ASCE in , In-Situ Soil Testing, L.C. started with the purchase of a DMT/CPT truck originally owned by the University of Florida and designed by Dr. John Schmertmann (history of . The rock types investigated included granite and basalt, gneiss, schist, sandstone, limestone, and siltstone. Geologic discontinuities such as joints, faults, and weathered rock are of major importance in an engineering evaluation of in-situ rock because of their effect upon the deformability, shear strength, and permeability of the mass.
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In-situ Testing of Rock Deformability Hardcover – October 1, by O C Zienkiewicz (Author)Author: O C Zienkiewicz, A G Stagg. PDF in-situ testing of rock deformability book Two plate load tests of 1 m 2 area were performed in a pressure tunnel at the Rocky Mountain Pumped Hydro Project.
Reaction for the tons | Find, read and cite all the research you. Although in situ tests have the advantage of involving a large volume or rock tested under the same environmental conditions as are prevailing in the rock mass, such tests are expensive and time consuming.
In addition, there are a number of controversial questions pertinent to in situ by: 4. Different In-Situ Tests for Determining Deformability Parameter s of Rock Mass The defor mability measurement tests can be divided into two par ts based on the method applicable.
Abstract. This chapter first briefly describes in situ rock stresses and the strategy for estimating them. Then the various methods for making preliminary estimation of in situ rock stresses are presented, including the World Stress Map, the empirical correlations between vertical and horizontal stresses and depth, and the different analytical models.
"New Techniques in Deformability Testing of In-Situ Rock Masses." Determination of the In-Situ Modulus of Deformation of Rock Masses, Special Tech.
PublicationASTM, West Conshohocken, Pennsylvania. 39â Goodman () reviews many of the static and dynamic tests used to determine the deformability of rocks, describing the apparatus, field and laboratory techniques, and the interpretation of the results.
The dilatometer is one of the most versatile instruments used to determine the in situ modulus of deformation. in-situ deformability vs weathering of a granite rock in barcelona (spain) Within the work of geotechnical investigation for the design of a new line of the Barcelona subway, a test shaft 17 M deep was excavated through a weathering profile of the granitic rock which is the substratum of.
Since laboratory tests on small specimens are often inadequate to predict the deformability of rock masses, in situ tests are necessary. There are various types of in situ tests, including plate bearing, flatjack, pressure chamber, borehole jacking and dilatometer tests.
testing IV Highly weathered Partly changed to soil, soil > rock Scrape NB corestones Variable and unreliable III Moderately weathered Partly changes to soil, rock > soil Rip Good for most small structures II Sliggyhtly Increased fractures and Blast Good for weathered mineral staining anything except large dams I Fresh rock Clean rock Blast Sound.
Determination of the in Situ Modulus of Deformation of Rock. ASTM International, - Deformations (Mechanics) - pages. 0 Reviews. Preview this book. Study on Shear Strength and Deformability Properties of Rock Masses by In-situ and Laboratory Testing Methods By: Abbas Taheri 1.
Introduction In many countries, the number of construction works for large scale structures has increased recently, and stability-based designs are being replaced with displacement-based designs.
The book is based on the author's extensive experience and offers a single source of information for the evaluation of rock properties. It systematically describes the classification and characterization of intact rock, rock discontinuities, and rock masses, and presents the various indirect methods for estimating the deformability, strength.
IN SITU INVESTIGATIONS INTO ROCK DEFORMABILITY, HARDNESS AND STRESS TERENSKA ISPITIVANJA DEFORMABILNOSTI, CVRSTOCA I NAPONSKIH STANJA U STENSKIM MASAMA. The paper presents some basic methods of in-situ rock investigations.
The method of hydraulic tension, test chamber, hydraulic cushion, radial press and drilling extensometer are presented. Introduction on In-situ Rock Tests.
In-situ R ock Tests are done to determine in-situ stresses & deformation characteristics and shear strength of jointed rock mass or critically weak seams within the rock mass, residual stresses within the rock mass, anchor capacities, and rock mass permeability.
In-situ tests are often the best means for determining the engineering properties. The PROBEX e rock pressuremeter or dilatometer is a radially expandable borehole probe used to determine in situ the deformability of rock mass and the creep properties of very soft rock.
Learn more PROFIL Digital Inclinometer Probe. Pressure meter test is mainly intended to measure in situ rock deformability around a borehole drilled in rock masses by applying hydrostatic pressure to the borehole wall. Pressure meter test is a method to investigate rock properties and / or rock conditions based on the relation between cavity pressure and radial displacement of borehole.
3 - FIELD TESTING. DEFORMABILITY TESTS. SM for Determining In Situ Deformability of Rock - [EUR 4] SM for Deformability Determination Using a Large Flat Jack Technique [EUR 4] SM for Deformability Determination Using a Flexible Dilatometer – [EUR 4] SM for Deformability Determination Using a Stiff Dilatometer - [EUR 4.
Laboratory Testing 3. ROCK MASS DEFORMABILITY Characterizing Rock Mass Deformability Measuring Rock Mass Deformability 4.
REFERENCES Recommended Readings: 1) Chapter 6 in Introduction to Rock Mechanics, by R.E. Goodman, Wiley, 2) Bieniawski, Z.T. and Bernede, M.J. (coordinators) () Suggested methods for determining the.
Abstract. WITH IN SITU Z. MEASUREMENT T. Bieniawski OF ROCK DEFORMABILITY Department of Mineral The Pennsylvania State University, Engineering University Park, Flat PA Jack Tests Abstract. tested under Although the in situ tests have the conditions as advantage of involving a large volume or rock The flat jack technique involves a fairly same environmental are prevailing in the rock.
Abstract. The article offers in situ test methods for cohesion and internal friction angle in rocks and at joints. Technologies and instrumentation for shearing of rock wedges in an open pit mine and for laser scanning and digital imaging of local falls and breaks of inaccessible rock blocks in pitwalls have been developed and approved for constructing a limit equilibrium equation and for.At a point where in-situ stress is zero, joints are formed in the rocks and it will ease the underground excavations, constructions etc.
but if In-situ stress is very high, any small disturbance to the stress field by tunnelling or even excavation may trigger violent release of stored energy in rock and cause failure.Section Name: Rock Mechanics (CED 48) Designator of Legally Binding Document: IS Title of Legally Binding Document: Code of practice for in-situ determination of rock mass deformability using a flexible dilatometer, Part 1: volume change.