В Российской Федерации в настоящее время продолжают эксплуатироваться десятки вертикальных стволов действующих горных предприятий, пройденных в 50-х – 70-х годах прошлого века, большинство из которых требуют проведения ремонтно-восстановительных работ различной степени сложности. В сложных горнотехнических условиях и при аварийном состоянии стволов стоимость и трудоёмкость таких работ многократно возрастает. Большое количество влияющих на состояние эксплуатационных стволов факторов наилучшим образом может быть учтено при математическом моделировании с применением современных программных комплексов. В статье представлен алгоритм численного моделирования, предусматривающий стадийный учет технологии работ и моделирование околоствольного массива пород с использованием модели Хоека-Брауна. Далее разработана технологическая схема реконструкции шахтных стволов, обеспечивающая снижение геотехнических рисков и повышение безопасности работ в сложных горнотехнических условиях. Важным преимуществом технологии является сохранность существующей крепи благодаря использованию анкерных опорных систем с высокой несущей способностью. Методами математического моделирования установлены закономерности взаимодействия системы «новая крепь – существующая крепь – дезинтегрированный породный массив», формируемой в процессе реконструкции ствола, а также выявлены негативные факторы, приводящие к возникновению концентраций напряжений в тюбинговой крепи, искривленных в процессе эксплуатации стволов и предложены конструктивные решения по их компенсации.

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геология

Совершенствование технологии реконструкции шахтных стволов в сложных горнотехнических условиях

Методика лабораторных исследований поведения трещины гидроразрыва, инициированной закачкой жидкостей в широком диапазоне их вязкостей

Развитие методологии систем поддержки принятия проектных решений в области промышленного извлечения метановых ресурсов

Спектроскопия благородных корундов мира

Напряженно-деформированное состояние крепи вертикальных стволов в неравномерном тектоническом поле напряжений

Научно-методическое обеспечение формирования оценочных механизмов надежности технологических решений при проектировании и строительстве объектов метрополитена

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An easy-to-follow guide to a hot new form of yoga Yoga with Weights is the latest breakthrough in mind-body exercise, integrating the mindfulness of yoga with the physical culture of body-building. Building on the strengths of both disciplines, this friendly guide shows readers how to safely combine yoga postures while simultaneously working out with lightweight hand-held free weights. It features customizable exercises that target specific areas of the body, each illustrated with multiple photos, and provides guidelines for combining healthy eating with workouts. Sherri Baptiste (Marin County, CA) is the founder of Baptiste Power of Yoga, a nationally recognized method of yoga offered throughout the United States. She teaches yoga classes throughout the United States and hosts retreats around the world.

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спорт

Yoga with Weights For Dummies

The definitive look at Wall Street in the 19th Century Perhaps the 19th century's best book on Wall Street, Fifty Years in Wall Street provides a fascinating look at the financial markets during a period of rapid economic expansion. Henry Clews was a giant figure in finance at that time, and his firsthand account brings this colorful era to life like never before. He reveals shocking stories of political and economic manipulation and how he helped bring down the mighty Boss Tweed. He writes eloquently about the madness of the markets and how the era's greatest speculators amassed their fortunes. This book provides an expansive view of Wall Street in an era of little regulation, rampant political corruption, and rapid financial change. Henry Clews was born in England in 1836 and emigrated to the United States in 1850. In 1859, he cofounded what became the second largest marketer of federal bonds during the Civil War. Later, he organized the «Committee of 70,» which deposed the corrupt Tweed Ring in New York City, and served as an economic consultant to President Ulysses Grant.

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корпоративные финансы

финансовый менеджмент

Fifty Years in Wall Street

A complete guide to planning an estate under today's tax rules When it comes to your estate–no matter how big or small it may be–you shouldn't leave anything to chance. Proper planning is necessary to protect both your assets and your heirs. Estate Planning Law Specialist Harold Apolinsky and expert financial planner Stewart Welch III know this better than anyone else, and in the Revised and Updated Edition of J.K. Lasser's New Rules for Estate and Tax Planning, they offer valuable advice and solid strategies to help you plan your estate under today's tax rules as well as preserve your wealth. Packed with up-to-the-minute facts, this practical resource covers important issues, such as: * How new legislation will impact inheritances and trusts * Estate and generation-skipping tax planning * The role of wills, executors, and trusts * Treatment of charitable contributions * The do's and don'ts of gifting * Life insurance and retirement planning Filled with in-depth insights and expert advice, this book will show you how to efficiently arrange your estate today so that you can leave more to those you care about tomorrow. 

личные финансы

J.K. Lasser's New Rules for Estate and Tax Planning

Your personal coach and game plan for creating a unique and award-winning science fair project Developing a science fair project from the ground up can be a daunting task–and today's science fairs are more competitive than ever before. The Complete Workbook for Science Fair Projects takes you step by step through the entire process of brainstorming, finding, completing, and submitting an award-winning science fair project of your very own. The special features of this easy-to-use, interactive workbook include:Complete instructions and fun, meaningful exercises to help you develop a science fair project idea from scratchExpert advice on choosing and researching a topic, finding a mentor, conducting an experiment, analyzing your findings, putting together a winning display, and much moreInspiring stories of real projects that show how students solved particular problems This ingenious guide also helps you prepare to deliver a top-notch oral presentation and answer questions from science fair judges. Plus, you'll find sample project journal worksheets, a handy list of scientific supply companies, and lots of space to record your thoughts and ideas as you work on your project. Today's exciting world of science fairs and contests offers many great opportunities. With The Complete Workbook for Science Fair Projects, you'll learn to think like a scientist and create a more effective, impressive science fair project–opening the door for an amazing science journey! 

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детская познавательная и развивающая литература

The Complete Workbook for Science Fair Projects

Full of valuable tips, techniques, illustrative real-world examples, exhibits, and best practices, this handy and concise paperback will help you stay up to date on the newest thinking, strategies, developments, and technologies in licensing intellectual property. Order your copy today!

зарубежная образовательная литература

знания и навыки

Essentials of Licensing Intellectual Property

Keep your family safe from tick-borne infections With millions around the world infected-and millions more at risk-Lyme and other tick-related disorders are today's fastest-growing infectious diseases. And while there has been much progress in combating these illnesses, we are a long way from eliminating them. Early treatment is crucial-and there's no better way to get informed and be prepared to deal with these diseases than to read this book. This comprehensive guide tells you everything you need to know to protect yourself and your family from the pain of Lyme, including vital information about the new Lyme disease vaccines. Written by Lyme disease pioneer Karen Vanderhoof-Forschner-cofounder of the Lyme Disease Foundation and a Lyme sufferer herself-this updated and expanded edition provides the latest on the multiple diseases that can be transmitted in a single tick bite and the symptoms that indicate you've been infected. In easy-to-understand language, the author discusses the often controversial issues of diagnosis and treatment of Lyme while reviewing the other tick-borne diseases in North America, such as Rocky Mountain Spotted Fever, tularemia, the emerging ehrlichioses, and some that are considered potential biowarfare agents. She offers expert advice on: * Protecting yourself from disease-carrying ticks-and what to do if you find one on your skin * Obtaining the best medical treatment * Accessing online information on vaccines, repellents, and the latest research * Finding self-help and support organizations, state medical complaint boards, products, and related services * Starting a school or business prevention program 

здоровье

медицина и здоровье

Everything You Need to Know About Lyme Disease and Other Tick-Borne Disorders

If you’ve been charged with setting up storage area networks for your company, learning how SANs work and managing data storage problems might seem challenging. Storage Area Networks For Dummies, 2nd Edition comes to the rescue with just what you need to know. Whether you already a bit SAN savvy or you’re a complete novice, here’s the scoop on how SANs save money, how to implement new technologies like data de-duplication, iScsi, and Fibre Channel over Ethernet, how to develop SANs that will aid your company’s disaster recovery plan, and much more. For example, you can: Understand what SANs are, whether you need one, and what you need to build one Learn to use loops, switches, and fabric, and design your SAN for peak performance Create a disaster recovery plan with the appropriate guidelines, remote site, and data copy techniques Discover how to connect or extend SANs and how compression can reduce costs Compare tape and disk backups and network vs. SAN backup to choose the solution you need Find out how data de-duplication makes sense for backup, replication, and retention Follow great troubleshooting tips to help you find and fix a problem Benefit from a glossary of all those pesky acronyms From the basics for beginners to advanced features like snapshot copies, storage virtualization, and heading off problems before they happen, here’s what you need to do the job with confidence!

зарубежная компьютерная литература

ОС и сети

Storage Area Networks For Dummies

Полная версия

Совершенствование технологии реконструкции шахтных стволов в сложных горнотехнических условиях