Rock mass

Part 1 of ebook "Elastic solutions for soil and rock mechanics" provides readers with contents including: Chapter 1 - Fundamental definitions and relationships; Chapter 2 - Basic solutions for concentrated loading; Chapter 3 - Distributed loads on the surface of a semi-infinite mass; Chapter 4 - Distributed loading beneath the surface of a semi-infinite hass; Chapter 5 - Surface loading of a finite layer underlain by a rigid base; Chapter 6 - Surface loading of multi-layer systems; Chapter 7 - Rigid loaded areas;...

204p giangdongdinh 28-05-2024 3 2   Download

Part 1 of ebook "Engineering rock mechanics - Part 2: Illustrative worked examples" provides readers with contents including: Chapter 1 - Introduction; Chapter 2 - Geological setting; Chapter 3 - Stress; Chapter 4 - In situ rock stress; Chapter 5 - Strain and the theory of elasticity; Chapter 6 - Intact rock, deformability, strength and failure; Chapter 7 - Fractures and hemispherical projection; Chapter 8 - Rock masses, deformability, strength and failure; Chapter 9 - Permeability;...

233p giangdongdinh 28-05-2024 4 2   Download

Part 2 of ebook "Elastic solutions for soil and rock mechanics" provides readers with contents including: Chapter 9 - Stresses and displacements in a non-homogeneous elastic mass; Chapter 10 - Stresses and displacements in embankhents and slopes; Chapter 11 - Stresses and displacements around underground openings; Chapter 12 - Raft foundations; Chapter 13 - Axially loaded piles; Chapter 14 - Piles subjected to lateral load and moment; Chapter 15 - Miscellaneous problems;...

219p giangdongdinh 28-05-2024 2 1   Download

In paper "Strain based brittle failure criteria for rocks" the enriched extension strain criterion is proposed as a threshold surface for crack initiation CI and crack damage CD and as a failure surface at peak P. Examples show that the enriched extension strain criterion predicts much lower volumes of damaged rock mass compared to the simple extension strain criterion.

10p dathienlang1012 03-05-2024 1 0   Download

Continued part 1, part 2 of ebook "Rock mass classification: A practical approach in civil engineering" provides readers with contents including: strength enhancement of rock mass in tunnels; strength of discontinuities; shear strength of rock masses in slopes; types of rock slope failures; slope mass rating (SMR); landslide hazard zonation; allowable bearing pressure for building foundations; method of excavation; rock drillability; permeability and groutability;...

132p thamnhuocgiai 24-09-2023 8 4   Download

Part 1 of ebook "Rock mass classification: A practical approach in civil engineering" provides readers with contents including: philosophy of quantitative classifications; shear zone treatment in tunnels and foundations; rock material; rock quality designation; Terzaghl's rock load theory; rock mass rating (RMR); prediction of ground conditions for tunnelling; rock mass quality (Q) - system; rock mass number; rock mass index;...

150p thamnhuocgiai 24-09-2023 9 3   Download

High-level radioactive waste (HLW) disposal is considered to constitute a disposal system within a deep rock mass using deep geological repository. A deep geological disposal system has an engineered barrier system (EBS) consisting of canisters, buffer material, and backfill material.

8p vironald 15-12-2022 11 4   Download

The paper presents a theory of the “plane of weakness” modelling applied to a deviated borehole that penetrated through laminated shale containing numerous parallel weakness planes. The obtained results show that the strength envelope for anisotropic rock is characterised by a U-shaped reduction in strength for failure along the weakness plane, confining pressure from 20 MPa to 80 MPa whithout any change in the failure mechanism of the shale.

7p viharry 14-12-2022 15 4   Download

This paper uses the data obtained in the actual blasting of the Deo Ca tunnel (39 datasets) to build the computational and prediction models for the area of the tunnel face after blasting by two methods, the multiple linear regression analysis method and the method of using artificial neural network (ANN).

10p vibentley 08-09-2022 14 5   Download

Geotechnical problems are complicated to the extent and cannot be expected in other areas since non-uniformities of existing discontinuous, pores in materials and various properties of the components. At present, it is extremely difficult to develop a program for tunnel analysis that considers all complicated factors.

9p vibentley 08-09-2022 14 4   Download

This paper uses the numerical method by FLAC3D software to build the model with a height of 450 m and a width of 700 m to study the effect of the twin inclined shafts construction on the deformation of rock mass on the ground surface.

8p vibentley 08-09-2022 11 5   Download

The pressure distribution of the rock mass on the tunnel's top and the level of stress concentration on its two sides are asymmetrical for inclined seam conditions. The position of the maximum vertical tension is expected to change from the left hip to the side of the coal pillar as the coal pillar widens. This change essentially marks the system's transition from one stable state to another.

9p vibentley 08-09-2022 6 3   Download

This work aims at proposing the methodology on the basis of the extension of the famous reliability analysis, joining the Kriging and Monte Carlo Simulation (AK-MCS) metamodeling technique for analyzing the longterm stability of deep tunnel support constituted by two layers (a concrete liner covered with a compressible layer).

17p haoasakura 30-05-2022 35 1   Download

Rock mechanics and engineering (Second edition): Part 1 has present the contents introduction to rock mechanics; the historical development of rock mechanics; engineering geology and rock mechanics; rock material and rock masses; fundamental concepts and description of fissures; physical and mechanical properties of rock material; residual stresses in rock masses in situ;...

216p chenlinong_0310 23-02-2022 11 2   Download

(BQ) Lecture Engineering geology - Chapter 8: Rock mechanics. After completing this section, you will understand the knowledge about Material of the Earth’s crust, composed of one or more minerals strongly bonded together that are so little altered by weathering that the fabric and the majority of the parent minerals are still present.

23p lazzaro 03-12-2021 10 1   Download

In this paper, the phase field method will be used to model the cracking propagation at the small scale for elastic media. This method is doing well in DEAL.II with the help of local refinement technique which allows studying the tensile strength of fractured rock mass behavior without prior knowledge of cracking propagation path and reduction of computational consumption.

9p kequaidan8 02-11-2020 17 1   Download

In simulation of fractured rock mass such as mechanical calculation, hydraulic calculation or coupled hydro-mechanical calculation, the representative element volume of fractured rock mass in the simulating code is very important and give the success of simulation works. The difficulties of how to make a representative element volume are come from the numerous fractures distributed in different orientation, length, location of the actual fracture network.

12p kequaidan6 11-07-2020 13 0   Download

Quality of blast preparation for rock beneficiation influences both on integrity of mineral stock in particular and in economical performances of enterprise operations in general. While rock processing for obtaining of crushed stone the yield of screenings is high, its amounts depend on rock strength properties.

6p tohitohi 19-05-2020 9 0   Download

The Eocene sequence of the southern Thrace Basin unconformably overlies two types of basement: Slate, limestone and phyllite crop out in small inliers under the Upper Eocene conglomerates and limestones in the Mecidiye region, north of Saros Bay. These low-grade metamorphic rocks form the eastern extension of the Circum-Rhodope Belt of Greece.

25p vinasaki2711 09-11-2019 6 2   Download

The invention of the wheel revolutionized activities as disparate as transportation, war, and the production of pottery (for which it may have been first used). It did not take long to discover that wheeled wagons could be used to carry heavy loads and fast (rotary) potters' wheels enabled early mass production of pottery. But it was the use of the wheel as a transformer of energy (through water wheels, windmills, and even treadmills) that revolutionized the application of nonhuman power sources....

189p nt18105 20-05-2013 42 3   Download