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Books > Professional & Technical > Other technologies > Mining technology & engineering
Presenting new technologies in underground coal extraction, with
special attention to mine galleries support and maintenance, load
mechanism of "massif-support system-safety system" systems,
analysis of face equipment for thin coal seams mining and
substantiation of rational stoping parameters.
Advanced surface mining technologies of coal and ore are discussed
in an original form, stability calculations of internal dumps and
open-cut faces are presented, as well as examination of land
surface subsidence using modern methods of calculation experiments.
Special attention is given to the complex mining of mineral
resources, such as: iron ore, coal deposits with drilling advance
degassing wells, methane extraction from coal and anthropogenic
deposits, heat receipt from mine water with help of thermal
pumps.
The unique geological conditions for mining in Poland and the
Ukraine require a new technological approach for mining thin and
very thin coal seams with thickness of 1 meter and less, using
selective coal extraction methods, leaving rock behind in the mine.
Relevant technological solutions are discussed in this
volume.
Further, technological process control during coal seams
underground gasification is described together with
pressure-temperature conditions of gas hydrates formation from
gaseous mixtures of various content. Substantiation is also given
to gas hydrates extraction technologies development and 21st
century new pulse technologies of well drilling and a temperature
mode of a rock-cutting tool and equipment with cryogenic-gravel
filters is examined.
Gas extraction processes located in flooded deposits with uniform
and macroheterogeneous collectors are presented with the
description of an effective methodology of two-subbench technology
of ore deposits extraction.
This book intends directly the practical engineers, who will be of
great interest in reading the interesting chapters. Earthwork
projects are critical components in civil construction and often
require detailed management techniques and unique solution methods
to address failures. Being earthbound, earthwork is influenced by
geomaterial properties at the onset of a project. Hence, an
understanding of the in-situ soil properties and all geotechnical
aspects is essential. Analytical methods for earth structures
remain critical for researchers due to the mechanical complexity of
the system. Striving for better earthwork project management, the
geotechnical engineering community continues to find improved
testing techniques for determining sensitive properties of soil and
rock, including stress wave-based, non-destructive testing methods.
To minimize failure during earthwork construction, past case
studies and data may reveal useful lessons and information to
improve project management and minimize economic losses.
This book presents a collection of papers on topics in the field of
strategic mine planning, including orebody modeling, mine-planning
optimization and the optimization of mining complexes. Elaborating
on the state of the art in the field, it describes the latest
technologies and related research as well as the applications of a
range of related technologies in diverse industrial contexts.
Mining haul roads are a critical component of surface mining
infrastructure and the performance of these roads has a direct
impact on operational efficiency, costs and safety. A significant
proportion of a mine's cost is associated with material haulage and
well-designed and managed roads contribute directly to reductions
in cycle times, fuel burn, tyre costs and overall cost per tonne
hauled and critically, underpin a safe transport system. The first
comprehensive treatise on mining haul road design, construction,
operation and management, Mining Haul Roads - Theory and Practice
presents an authoritative compendium of worldwide experience and
state-of-the-art practices developed and applied over the last 25
years by the three authors, over three continents and many of the
world's leading surface mining operations. In this book, the
authors: Introduce the four design components of an integrated
design methodology for mining haul roads - geometric (including
drainage), structural, functional and maintenance management
Illustrate how mine planning constraints inform road design
requirements Develop the analytical framework for each of the
design components from their theoretical basis, and using typical
mine-site applications, illustrate how site-specific design
guidelines are developed, together with their practical
implementation Summarise the key road safety and geometric design
considerations specific to mining haul roads Specify the
mechanistic structural design approach unique to ultra-heavy wheel
loading associated with OTR mine trucks Describe the selection,
application and management of the road wearing course material,
together with its rehabilitation, including the use of palliatives
Develop road and operating cost models for estimating total
road-user costs, based on road rolling resistance measurement and
modelling techniques Illustrate the approach of costing a mining
road construction project based on the design methodologies
previously introduced List and describe future trends in mine
haulage system development, how mining haul road design will evolve
to meet these new system challenges and how the increasing
availability of data is used to manage road performance and
ultimately provide 24x7 trafficability. Mining Haul Roads - Theory
and Practice is a complete practical reference for mining
operations, contractors and mine planners alike, as well as civil
engineering practitioners and consulting engineers. It will also be
invaluable in other fields of transportation infrastructure
provision and for those seeking to learn and apply the
state-of-the-art in mining haul roads. "This book is the most
definitive treatise on mining haul roads ever written [...] There
has never been a text that addresses the many facets of mining haul
roads on such a scope [...]" From the Foreword by Jim Humphrey,
Professional Engineer, Autonomous haulage systems developer and
Distinguished Member of the Society of Mining, Metallurgy and
Exploration.
Weak rocks encountered in open pit mines cover a wide variety of
materials, with properties ranging between soil and rock. As such,
they can provide a significant challenge for the slope designer.
For these materials, the mass strength can be the primary control
in the design of the pit slopes, although structures can also play
an important role. Because of the typically weak nature of the
materials, groundwater and surface water can also have a
controlling influence on stability. Guidelines for Open Pit Slope
Design in Weak Rocks is a companion to Guidelines for Open Pit
Slope Design, which was published in 2009 and dealt primarily with
strong rocks. Both books were commissioned under the Large Open Pit
(LOP) project, which is sponsored by major mining companies. These
books provide summaries of the current state of practice for the
design, implementation and assessment of slopes in open pits, with
a view to meeting the requirements of safety, as well as the
recovery of anticipated ore reserves. This book, which follows the
general cycle of the slope design process for open pits, contains
12 chapters. These chapters were compiled and written by industry
experts and contain a large number of case histories. The initial
chapters address field data collection, the critical aspects of
determining the strength of weak rocks, the role of groundwater in
weak rock slope stability and slope design considerations, which
can differ somewhat from those applied to strong rock. The
subsequent chapters address the principal weak rock types that are
encountered in open pit mines, including cemented colluvial
sediments, weak sedimentary mudstone rocks, soft coals and chalk,
weak limestone, saprolite, soft iron ores and other leached rocks,
and hydrothermally altered rocks. A final chapter deals with design
implementation aspects, including mine planning, design
implementation, monitoring, surface water control and closure of
weak rock slopes. Key Features: Illustration of the best practice
in modern open pit mines State of the art approaches for
challenging designs Use of numerous case histories written by
large-open pit operators to illustrate state of practice Individual
chapters/sections written by leaders in the industry As with the
other books in this series, Guidelines for Open Pit Slope Design in
Weak Rocks provides guidance to practitioners involved in the
design and implementation of open pit slopes, particularly
geotechnical engineers, mining engineers, geologists and other
personnel working at operating mines.
Kritik an - heute wirksamen - Umdeutungen der despotischen
NS-Herrschaft bildet den roten Faden der Untersuchung. Dazu gehoert
die Verwandlung des Hitlerregimes in einen Rechtsstaat und die
Entpolitisierung der beamteten Funktionseliten der Diktatur. Die
Auswirkungen der weitgehenden UEbernahme des Justizapparats des
Dritten Reiches werden sichtbar - wie die vielfache Aufloesung des
Taterbegriffs fur nationalsozialistische Massenverbrechen.
This book focuses on the fundamental concept of and current
endeavors in "urban mining" among those who are interested in both
metal resources and ecology. Systems for recycling and reusing
precious metals and rare-earth minerals contained in used and
discarded electronics are introduced in this book. The target
audience is not academic researchers in the resource management and
ecology fields but, rather, citizens who are concerned about our
future environment and want to do something for the future.
The Eyes of the World focuses on the lives and experiences of
Eastern Congolese people involved in extracting and transporting
the minerals needed for digital devices. The digital devices that,
many would argue, define this era exist not only because of Silicon
Valley innovations but also because of a burgeoning trade in dense,
artisanally mined substances like tantalum, tin, and tungsten. In
the tentatively postwar Eastern DR Congo, where many lives have
been reoriented around artisanal mining, these minerals are
socially dense, fueling movement and innovative collaborations that
encompass diverse actors, geographies, temporalities, and
dimensions. Focusing on the miners and traders of some of these
"digital minerals," The Eyes of the World examines how Eastern
Congolese understand the work in which they are engaged, the forces
pitted against them, and the complicated process through which
substances in the earth and forest are converted into commodified
resources. Smith shows how violent dispossession has fueled a
bottom-up social theory that valorizes movement and
collaboration-one that directly confronts both private mining
companies and the tracking initiatives implemented by international
companies aspiring to ensure that the minerals in digital devices
are purified of blood.
The book is a comprehensive treatment of the application of
geotechnical engineering to site selection, site exploration,
design, operation and closure of mine waste storage
facilities.
The level and content are suitable as a technical source and
reference for practising engineers engaged both in the design and
operational management of mine waste storage facilities and for
senior undergraduate and postgraduate students. The thirteen
chapters follow the sequence of the life cycle of a waste storage
facility (characterization, site selection, geotechnical
exploration, environmental aspects, testing and compaction) and
also consider the use of mine waste as a construction
material.
The text is liberally illustrated by both line drawings and
photographs, and the theoretical passages are supported by typical
test results, worked examples and carefully analysed case
histories.
Rock physics encompasses practically all aspects of solid and fluid
state physics. This book provides a unified presentation of the
underlying physical principles of rock physics, covering elements
of mineral physics, petrology and rock mechanics. After a short
introduction on rocks and minerals, the subsequent chapters cover
rock density, porosity, stress and strain relationships,
permeability, poroelasticity, acoustics, conductivity,
polarizability, magnetism, thermal properties and natural
radioactivity. Each chapter includes problem sets and focus boxes
with in-depth explanations of the physical and mathematical aspects
of underlying processes. The book is also supplemented by online
MATLAB exercises to help students apply their knowledge to
numerically solve rock physics problems. Covering laboratory and
field-based measurement methods, as well as theoretical models,
this textbook is ideal for upper-level undergraduate and graduate
courses in rock physics. It will also make a useful reference for
researchers and professional scientists working in geoscience and
petroleum engineering.
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