### Application of genetic programming to predict the uniaxial ...

2021-12-8 · Application of genetic programming to predict the uniaxial compressive strength and elastic modulus of carbonate rocks. ... 1 7 were dolomite, 9

### (PDF) Determination of Rock Strength and Deformability

The range of Young modulus in relation to the uniaxial com pressive strength was determined. ... 21-23 Harder rocks (sandstone, limestone, dolomite) 14-16

### Strength Characteristics for Limestone and Dolomite

2015-5-23 · Strength Characteristics for Limestone and Dolomite Rock Matrix using Tri-Axial System Miteshkumar Bharatbhai Patel Dr. M. V. Shah PG Student Assistant Professor Department of Applied Mechanics Department of Applied Mechanics L D College of Engineering L D College of Engineering Abstract ...

### Mechanical characteristics of the exponential strength ...

2010-2-1 · For Dunham dolomite, the exponential criterion fits seven test data with a mean misfit of 1.2 MPa, which is lower than 0.5% of the uniaxial compressive strength. As said in [24] , the same results may be gotten no matter whether the uniaxial compressive strength is used or not in fitting the exponential criterion.

### 「unconfined pressive strength of dolomite」

STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1. INTRODUCTION. Low porosity dolomite and quartzite can have unconfined compressive strengths up to 300 MPa. (6) uniaxial tensile strengths are usually 10 to 20 times lower than unconfined compressive strengths. (7) end effects can have a large effect on rock strength.

### (PDF) The Uniaxial Compressive Strength of Soft Rock

2021-12-15 · Soft rock is a term that usually refers to a rock material with a uniaxial compressive strength (UCS) less than 20 MPa. This low strength range might

### STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES

2006-3-19 · STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1. INTRODUCTION 2. TESTING OF INTACT ROCK FOR STRENGTH 2.1 Uniaxial Compression 2.2 Point Load Testing 2.3 Uniaxial Tension 2.4 Indirect Tension Tests 2.5 Shear Tests 2.6 Confined Compression Tests (Triaxial Tests) 2.7 Biaxial and Multiaxial Tests 2.8 Other Tests 3. PARAMETERS

### Modelling rock strength in three dimensions - ScienceDirect

1984-2-1 · Thus, the uniaxial tensile strength may be expressed in terms of the uniaxial compressive strength using a power function of the following type [24, 25]: a,=T.p~.(tr"~' (5) \Pa} where T and t are dimensionless numbers, and pa is atmospheric pressure in the same units as those of a, and trc. The values of T and t depend on the rock group.

### Inconsistency of changes in uniaxial compressive strength ...

2021-2-1 · 1. Introduction. The uniaxial compressive strength (UCS) is one of the most important mechanical properties of rock materials. It is of great significance in many deep rock engineering applications, such as geothermal resource development, underground storage and extraction of petroleum and natural gas, utilization of deep underground space, disposal of radioactive

### (PDF) A Comparative Evaluation of Indirect Methods to ...

A comparative evaluation of indirect methods, comprising uniaxial compression test, schimidt hammer test, point load test, and impact strength tests, were

### Correlation of Geo-Mechanics Parameters with Uniaxial ...

2018-8-17 · This paper estimates the correlation between the physical and mechanical characteristics of dolomitic limestone. Forty samples were measured and the results were used to derive the empirical equations for the relations between the uniaxial compressive strength (UCS), elastic modulus (E), P-wave velocity (\(v_{p}\)), Poisson’s ratio (μ), point load strength, and

### CORRELATION OF UNIAXIAL COMPRESSIVE STRENGTH

2019-7-10 · Determination of the correlations between uniaxial compressive strength UCS and other physical and mechanical rock properties such as P – wave velocity, shear wave velocity, elastic modulus, density and permeability for different rock types such as limestone, sandstone, coal, travertine, dolomite, and other rock types are widely studied (Tugrul

### unconfined compressive strength of dolomite

2020-3-12 · 「unconfined pressive strength of dolomite」 Jun 14, 2013 · Predicting the unconfined compressive strength of the Inside Mines. reported that mining engineers request the uniaxial compressive strength (UCS) more often than any . limestone, dolomite and marble), and granitic rocks »More detailed (3.3K) Read More

### The Influence of well bore fluid pressure on drilling ...

2007-9-18 · pressive strength, the gradient of increase depending ... these tests, the failure data for Dunham Dolomite and Mizuho Trachyte showed good agreement as shown in Figure 2. ... uniaxial horizontal stress, overburden stress, weight

### UNIAXIAL COMPRESSIVE STRENGTH AND FAILURE

The uniaxial com - pression test on sandstone after thermal treatment [6] indicated that 600 °C is the threshold temperature of sandstone fragility-ductility damage, within this range, the uniaxial com-pressive strength and elastic modulus of sandstone presents a falling trend on the whole.

### Predicting the unconﬁned compressive strength of the ...

2008-11-3 · 2.3. Strength and durability Although the uniaxial compressive strength test is a routine test and is performed frequently, there are only a few publications [21,22] relating this test to dura-bility. Eigenbrod [21] investigated the change in com-pressive strength with increasing moisture content. He concluded that compressive strength ...

### STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES

2006-3-19 · STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1. INTRODUCTION 2. TESTING OF INTACT ROCK FOR STRENGTH 2.1 Uniaxial Compression 2.2 Point Load Testing 2.3 Uniaxial Tension 2.4 Indirect Tension Tests 2.5 Shear Tests 2.6 Confined Compression Tests (Triaxial Tests) 2.7 Biaxial and Multiaxial Tests 2.8 Other Tests 3. PARAMETERS

### Compressive strength of rocks - PetroWiki

2015-6-4 · Estimating compressive strength. General rock failure criterion can be reduced to a few parameters dependent on lithology (m) and the uniaxial compressive strength (C 0).Lithology is commonly derived during log analysis, so m may be estimated (Table 1).What is needed still is an initial measure of rock strength provided by C 0. C 0 can be estimated from porosity or

### (PDF) Correlating sound velocity with the density ...

The uniaxial compressive strength and static Young's modulus (Es) of intact rocks are the most important geotechnical parameters for stability analysis of surface and underground structures.

### Stress – Strain Relationships

2016-10-18 · specimen subjected to a uniaxial load, we can write σ = Eε This relationship is known as Hooke’s Law and was first recorded by Robert Hooke, an English mathematician, in 1678. Note: Hooke’s Law describes only the initial linear portion of the stress-strain curve for a bar subjected to uniaxial extension.

### Relationship between uniaxial compressive strength and ...

Relationship between uniaxial compressive strength and slake durability indices of dolomite-gypsum sequenced rocks operated in Denizli from operational point view. Denizli Turkey Project No:2012FBE015 (in Turkish with English Abstract).

### Experimental Study on Strength Characteristics and ...

2021-6-18 · However, there are few studies on tight carbonate rocks under triaxial stress. Wu (2010) has studied the influence of porosity on uniaxial and triaxial compressive strength of dolomite, the result shows that compressive strength of rock decreases exponentially with the increase of porosity.

### CORRELATION OF UNIAXIAL COMPRESSIVE STRENGTH

2019-7-10 · Determination of the correlations between uniaxial compressive strength UCS and other physical and mechanical rock properties such as P – wave velocity, shear wave velocity, elastic modulus, density and permeability for different rock types such as limestone, sandstone, coal, travertine, dolomite, and other rock types are widely studied (Tugrul

### Study of using Dolomite as Starting Material Resource to ...

pressive strength value of the MOC samples was deter-mined. The water resistance coefficient (WR) was calcu-lated using Eq. 1 (Liu et al. 2015). im R 7d CSI W CSI = (1) where WR is the water resistance coefficient, CSIim is the compressive strength value of the MOC immersed in tap water for 10 days (MPa), and CSI7d is the compressive

### The Influence of well bore fluid pressure on drilling ...

2007-9-18 · pressive strength, the gradient of increase depending ... these tests, the failure data for Dunham Dolomite and Mizuho Trachyte showed good agreement as shown in Figure 2. ... uniaxial horizontal stress, overburden stress, weight

### unconfined compressive strength of dolomite

2020-3-12 · 「unconfined pressive strength of dolomite」 Jun 14, 2013 · Predicting the unconfined compressive strength of the Inside Mines. reported that mining engineers request the uniaxial compressive strength (UCS) more often than any . limestone, dolomite and marble), and granitic rocks »More detailed (3.3K) Read More

### Effect of Formations Compressive Strength on Drill String ...

Previous experiments with several layered concretes cubes proved that the drill string vibrations are related to the uniaxial compressive strength of concretes. To extend the study in this area, complex rock samples such as sandstone, dolomite and limestone were drilled with optimized ranges of weight on bit and rotary speed of drill string.

### STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES

2006-3-19 · STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1. INTRODUCTION 2. TESTING OF INTACT ROCK FOR STRENGTH 2.1 Uniaxial Compression 2.2 Point Load Testing 2.3 Uniaxial Tension 2.4 Indirect Tension Tests 2.5 Shear Tests 2.6 Confined Compression Tests (Triaxial Tests) 2.7 Biaxial and Multiaxial Tests 2.8 Other Tests 3. PARAMETERS

### Comparison of six major intact rock failure criteria using ...

2017-8-25 · mixture ratio is designed to obtain a uniaxial com-pressive strength around 5.5 MPa for the model material. In the experimental part, three uniaxial tests, three triaxial tests and 5 Brazilian tests were per-formed. Cubic samples of side dimension 160 mm were used for the uniaxial and triaxial tests. For the

### METHODS TO QUANTIFY THE PARAMETERS APPLIED IN

2011-3-12 · The uniaxial compressive strength of the rock constitutes the highest strength limit of the actual rock mass. ISRM (1981) has defined the uniaxial strength of a rock to samples of 50 mm diameter. A rock is, however, a fabric of minerals and grains bound or welded together. The rock therefore includes microscopic cracks and fissures.

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