File Name: rock mechanics design in mining and tunneling .zip
This study aims to dynamically analyze blasting conducted in the Nanjung tunnel.
Once production of your article has started, you can track the status of your article via Track Your Accepted Article. Help expand a public dataset of research that support the SDGs. This journal is concerned with original research, new developments, site measurements and case studies in rock mechanics and rock engineering.
In conventional studies, the shear behaviour of a joint is usually investigated with …. The effect of infilling on mechanical response and crack behavior of pre-stressed rock with double rectangular holes under dynamic load was investigated through a series of coupled static—dynamic loading tests on diorite specimens in three …. Understanding the hydraulic fracture HF re-orientation mechanism from artificial weaknesses is critical to screen-out prevention in the petroleum industry and caveability management in the mining industry.
An improved discrete element method is …. Structural—slip rockbursts are frequently faced in civil tunnels, which pose huge threats to the safety of personnel and equipment in tunnels.
In this study, the core features of structural—slip rockbursts were summarized qualitatively based on …. The mining-induced strata movement and surface subsidence are closely related to the dip angle of coal seam.
However, most surface subsidence prediction methods are empirical, and only suitable for nearly flat coal seam mining. In this paper, a …. Here, we investigated the localized and …. In the present work, we investigate the mechanical weakening and deformation induced by water on a microporous carbonate rock, the Obourg Chalk from Mons Basin Belgium , through conventional triaxial tests and injection tests. The injection tests …. Sometimes, a rather high stress drop characterizes earthquakes induced by underground fluid injections or productions.
In addition, long-term fluid operations in the underground can influence a seismogenic reaction of the rock per unit volume of …. Large deformations often occur during and after the construction of deep roadways, particularly in fractured hard rock. With persistent deformation, there may be mechanistically unexplained, repeated failure phenomena—they are difficult problems ….
Rock tunnels excavated using drilling and blasting technique in jointed rock masses often have a very uneven and rough excavation surface. Experience from previous studies shows that the unevenness of a rock surface has a large impact on the …. Open-pit mining can produce high pit slopes with potential impacts to both mine personnel and the environment in the event of failure.
During mining, slopes are often monitored by site survey personnel using a variety of methods, including survey …. The interaction between a natural fracture NF and a hydraulic fracture HF has been studied extensively, both experimentally and numerically, to better understand the potential for crossing and arrest of a hydraulic fracture intersecting a ….
Fractured sorptive geomaterials FSG are ubiquitous in geological systems such as coal, shale and chalk. The solid matrix of FSG can adsorb species in gas or liquid form, the process of which is often accompanied by the deformation and …. Moment tensor analyses suggest that shear microfractures dominate the compressive characteristics of most rock materials.
However, the microfracture sizes estimated by the traditional shear model are unrealistically large. This paper presents a …. Time-dependent rock behavior can significantly affect the design and the construction method of tunnel support lining. As an innovation, a concrete liner covered with a compressible layer is thus of great interest to reduce the underground space …. Large deformation has always been a focus and difficult issue in the construction of deep-buried tunnels in squeezing rock.
Carbonate reservoirs accommodate a significant proportion of global hydrocarbon reserves. However they are often tight and permeability is therefore usually dependent on either flow through existing fractures or through those produced by hydraulic ….
Proppant embedment is a serious issue that reduces fracture width and conductivity. The paper presents the results of experiments on embedment phenomena on a shale rock from the region of the Baltic Basin, which is regarded as an unconventional …. This paper presents a geometric, mechanics-based, stochastic model—FracProp—that was developed to predict fracture initiation and propagation in rock.
FracProp is capable of quantifying uncertainties associated with the point of fracture …. Springer Professional. Download PDF-version View full text.
McClure, C. The objective of this paper is to summarize briefly the practical use of rock mechanics in design and construction of various types of structures. These range from foundation for industrial facilities, nuclear power plants, bridges and dams to tunnels and underground caverns. The use of rock mechanics has varied from performing a few laboratory unconfined compressive tests on core samples to complete field and laboratory tests for underground power caverns. The primary difference between the rock mechanics studies we have for construction projects and those most commonly found in the literature is that our tests must provide immediate answers to specific questions facing a design or construction engineer. For example, when we make a plate-bearing test we arrive at a load-deformation relationship.
ROCK MECHANICS DESIGN IN MINING AND TUNNELLING. This book treats in detail the engineering design process and the latest design approaches for.
In conventional studies, the shear behaviour of a joint is usually investigated with …. The effect of infilling on mechanical response and crack behavior of pre-stressed rock with double rectangular holes under dynamic load was investigated through a series of coupled static—dynamic loading tests on diorite specimens in three …. Understanding the hydraulic fracture HF re-orientation mechanism from artificial weaknesses is critical to screen-out prevention in the petroleum industry and caveability management in the mining industry. An improved discrete element method is …. Structural—slip rockbursts are frequently faced in civil tunnels, which pose huge threats to the safety of personnel and equipment in tunnels. In this study, the core features of structural—slip rockbursts were summarized qualitatively based on ….
The engineering design process, often systematically used in other branches of engineering, such as mechanical or architectural engineering, is seldom applied in rock engineering. While it is sometimes claimed that rock excavations are actually designed, little attention is paid to the engineering design philosophy. The engineering design process is described and the design approaches for rock engineering are outlined. This is a preview of subscription content, access via your institution. Rent this article via DeepDyve. Bieniawski, Z.
Не знаю, почему Фонтейн прикидывается идиотом, но ТРАНСТЕКСТ в опасности. Там происходит что-то очень серьезное. - Мидж. - Он постарался ее успокоить, входя вслед за ней в комнату заседаний к закрытому жалюзи окну. - Пусть директор разбирается. Она посмотрела ему в .
Вам нужен ключ. Я поняла так, что весь смысл в том, чтобы его уничтожить. - Верно. Но я хочу иметь копию. Я хочу открыть этот проклятый файл и ознакомиться с созданной Танкадо программой. Сьюзан была столь же любопытна, как и ее шеф, но чутье подсказывало ей, что расшифровка алгоритма Цифровой крепости неразумна, какой бы интерес это ни представляло.
Его безумная поездка вот-вот закончится. Он посмотрел на ее пальцы, но не увидел никакого кольца и перевел взгляд на сумку. Вот где кольцо! - подумал. - В сумке. - и улыбнулся, едва сохраняя спокойствие. - Ты сочтешь это сумасшествием, - сказал Беккер, - но мне кажется, что у тебя есть кое-что, что мне очень. - Да? - Меган внезапно насторожилась.
Под густым слоем краски он увидел не гладкие девичьи щеки, а густую щетину. Это был молодой человек. В верхней губе у него торчала серебряная запонка, на нем была черная кожаная куртка, надетая на голое тело.
6 EMPIRICAL METHODS OF DESIGN. ClassilicaJion systems in rock engineering. Teraghi's rock load classification. La ufl'cr- Pachcr classificatio n. Deere's.Reply
One of the tasks related to the repository development is the feasibility demonstration of the permanent repository closure, including long-term rock mass associated issues.Reply