Tunnel Construction


Book Description

The book describes the details about the tunnel construction, that includes, history, shape and sizes, various conventional methods, techniques, planning, designing and methodology of construction in Indian context. The geological investigation for the selection of most economical, and technically viable, alignment for transportation. Further book highlights the necessity of safety for men, material and machinery, during construction. The Geo technical investigation reports are prepared, Rock is classified in five classes like good rock, poor, fair, poor and very poor, according to the strength and characteristics of the rock the conclusion and recommendation are followed while designing the tunnel with adequately safe and sound tunnel support system. ‘The book emphasises on engaging skilled, experienced and trained workmen, plant and equipment in good service condition, which is very important for the completion within stipulated time and cost. The principle of reduce, reuse and recycle is applied in all possible construction activities to minimise the risk to the environment. For ensuring this, the temporary and permanent support system are designed to provide adequate support for the excavated tunnel profile. The Geo technical instrumentation is also provided to continuously monitoring the profile, foresee the behaviour of Rock mass, so that preventive steps are taken in time to mitigate the threats posed by fractured rock mass or poor rock. Finally, it illustrates the various detailed activities and sequences involved at macro level and micro level, for the construction of a tunnel.




No Dig


Book Description

Work in partnership with nature to nurture your soil for healthy plants and bumper crops - without back-breaking effort! Have you ever wondered how to transform a weedy plot into a thriving vegetable garden? Well now you can! By following the simple steps set out in No Dig, in just a few short hours you can revolutionize your vegetable patch with plants already in the ground from day one! Charles Dowding is on a mission to teach that there is no need to dig over the soil, but by minimizing intervention you are actively boosting soil productivity. In fact, The less you dig, the more you preserve soil structure and nurture the fungal mycelium vital to the health of all plants. This is the essence of the No Dig system that Charles Dowding has perfected over a lifetime growing vegetables. So put your gardening gloves on and get ready to discover: - Guides and calendars of when to sow, grow, and harvest. - Inspiring information and first-hand guidance from the author - “Delve deeper” features look in-depth at the No Dig system and the facts and research that back it up. - The essential role of compost and how to make your own at home. - The importance of soil management, soil ecology, and soil health. Now one of the hottest topics in environmental science, this "wood-wide web" has informed Charles's practice for decades, and he's proven it isn't just trees that benefit - every gardener can harness the power of the wood-wide web. Featuring newly- commissioned step-by-step photography of all stages of growing vegetables and herbs, and all elements of No Dig growing, shot at Charles’s beautiful market garden in Somerset, you too will be able to grow more veg with less time and effort, and in harmony with nature - so join the No Dig revolution today! A must-have volume for followers of Charles Dowding who fervently believe in his approach to low input, high yield gardening, as well as gardeners who want to garden more lightly on the earth, with environmentally friendly techniques like organic and No Dig.




Thunder in the Harbor


Book Description

Fort Sumter. Charleston. April 1861. The start of the Civil War. The bombardment and surrender of Sumter were only the beginning of the story. Both sides understood the military significance of the fort and the busy seaport, which played host to one of the longest and most complicated and fascinating campaigns of the entire Civil War. Richard Hatcher’s Thunder in the Harbor: Fort Sumter and the Civil War is the first modern study to document the fort from its origins, through the war, and up to its transfer to the National Park Service in 1948. After its surrender, Southern troops immediately occupied and improved Sumter’s defenses. The U.S. blockaded Charleston Harbor and for two years the fort, with its 84 heavy guns and a 500-man garrison, remained mostly untested. That changed in July 1863 when a powerful combined operation set its sights on the fort, Charleston, and its outer defenses. The result was a grueling 22-month land and sea siege—the longest of the Civil War. The complex effort included ironclad attacks, land assaults, raiding parties, and siege operations. Some of the war’s most famous events unfolded there, including the assault against Battery Wagner, led by the 54th Massachusetts Infantry Regiment (depicted in the movie Glory), the shelling of the city by the “Swamp Angel,” and the beginning of submarine warfare when the H. L. Hunley sank the USS Housatonic and was herself lost at sea. The destruction of Fort Sumter remained a key Federal objective throughout the siege. Despite repeated concentrated bombardments of the fort and the city, Sumter never fell. The defiant fort, Charleston, and its defensive lines were evacuated in February 1865 once word arrived that Maj. Gen. William T. Sherman approached Columbia, South Carolina. Hatcher, the former historian at Fort Sumter Fort Moultrie National Historical Park, mined a host of primary sources to produce an in-depth and fascinating account of the intricacies, complexities, and importance of this campaign to the overall war effort. Nearly 18 months of shelling had rendered Fort Sumter almost unrecognizable, but the significance of its location remained. During the eight decades that followed, the United States invested millions of dollars and thousands of hours rebuilding and rearming the fort to face potential foreign threats in three different wars. By the end of World War II, sea and air power had made Sumter obsolete, and the fort was transferred to the National Park Service. Thunder in the Harbor fills a large gap in the historiography and underscores that there is still much to learn about our endlessly fascinating Civil War.




Geotechnical Aspects of Underground Construction in Soft Ground. 2nd Edition


Book Description

GEOTECHNICAL ASPECTS OF UNDERGROUND CONSTRUCTION IN SOFT GROUND comprises a collection of 112 contributions presented at the Tenth International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, held in Cambridge, United Kingdom, 27-29th June 2022. This 2nd edition also includes four general reports on the symposium themes which give an overview of the papers submitted to the symposium, covered in four technical sessions. The symposium is the latest in a series which began in New Delhi in 1994, and was followed by symposia in London (1996), Tokyo (1999), Toulouse (2002), Amsterdam (2005), Shanghai (2008), Rome (2011), Seoul (2014) and Sao Paulo (2017). This symposium was organised by the Geotechnical Research Group at the University of Cambridge, under the auspices of the Technical Committee TC204 of the International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE). Geotechnical Aspects of Underground Construction in Soft Ground includes contributions from more than 25 countries on the research, design and construction of underground works in soft ground. The contributions cover the following themes: Field case studies Sensing technologies and monitoring for underground construction in soft ground Physical and numerical modelling of tunnels and deep excavations in soft ground Seismic response of underground infrastructure in soft ground Design and application of ground improvement for underground construction Ground movements, interaction with existing structures and mitigation measures Similar to previous editions, GEOTECHNICAL ASPECTS OF UNDERGROUND CONSTRUCTION IN SOFT GROUND represents a valuable source of reference on the current practice of analysis, design, and construction of tunnels and deep excavations in soft ground. The book is particularly aimed at academics and professionals interested in geotechnical and underground engineering.




Proceedings of GeoShanghai 2018 International Conference: Tunnelling and Underground Construction


Book Description

This book is the fifth volume of the proceedings of the 4th GeoShanghai International Conference that was held on May 27 - 30, 2018. This volume, entitled “Tunneling and Underground Construction”, covers the recent advances and technologies in tunneling and underground structure engineering. It presents the state-of-the-art planning philosophy, theories, experiments, methodologies and findings in the related areas. The importance of underground space utilization to the development of human society is also addressed. The challenges and future directions of underground engineering are highlighted. The topics include but are not limited to the tunneling and underground construction induced ground deformation, mechanical behaviors of segmental lining systems, tunneling in challenging situations, maintenance tactic and emergency counter-measures. The book may benefit researchers and scientists from the academic fields of tunneling and underground structure engineering as well as practical engineers from the industry. Each of the papers included in this book received at least two positive peer reviews. The editors would like to express their sincerest appreciation to all of the anonymous reviewers all over the world, for their diligent work.




The Book of the Dead


Book Description

Written in response to the Hawk's Nest Tunnel disaster of 1931 in Gauley Bridge, West Virginia, The Book of the Dead is an important part of West Virginia's cultural heritage and a powerful account of one of the worst industrial catastrophes in American history. The poems collected here investigate the roots of a tragedy that killed hundreds of workers, most of them African American. They are a rare engagement with the overlap between race and environment in Appalachia. Published for the first time alongside photographs by Nancy Naumburg, who accompanied Rukeyser to Gauley Bridge in 1936, this edition of The Book of the Dead includes an introduction by Catherine Venable Moore, whose writing on the topic has been anthologized in Best American Essays.




Geotechnical Aspects of Underground Construction in Soft Ground


Book Description

Geotechnical Aspects of Underground Construction in Soft Ground comprises a collection of 112 papers, the Fujita Lecture, three Special Lectures and the Bright Spark Lecture presented at the Tenth International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, held in Cambridge, United Kingdom, 27-29 June 2022. This second edition includes four general reports on the symposium themes. The symposium is the latest in a series which began in New Delhi in 1994, and was followed by symposia in London (1996), Tokyo (1999), Toulouse (2002), Amsterdam (2005), Shanghai (2008), Rome (2011), Seoul (2014) and Sao Paulo (2017). This was organised by the Geotechnical Research Group at the University of Cambridge, under the auspices of the Technical Committee TC204 of the International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE). Geotechnical Aspects of Underground Construction in Soft Ground includes contributions from more than 25 countries on research, design and construction of underground works in soft ground. The contributions cover: Field case studies Sensing technologies and monitoring for underground construction in soft ground Physical and numerical modelling of tunnels and deep excavations in soft ground Seismic response of underground infrastructure in soft ground Design and application of ground improvement for underground construction Ground movements, interaction with existing structures and mitigation measures The general reports give an overview of the papers submitted to the symposium, covered in four technical sessions. The proceedings include the written version of the five invited lectures covering topics ranging from developments in geotechnical aspects of underground construction, tunnelling and groundwater interaction (short and long-term effects), the influence of earth pressure balance shield tunnelling on pre-convergence and segmental liner loading (field observations, modelling and implications on design). Similar to previous editions, Geotechnical Aspects of Underground Construction in Soft Ground represents a valuable source of reference on the current practice of analysis, design, and construction of tunnels and deep excavations in soft ground. The book is particularly aimed at academics and professionals interested in geotechnical and underground engineering.




Tunnel Engineering


Book Description

This volume presents a selection of chapters covering a wide range of tunneling engineering topics. The scope was to present reviews of established methods and new approaches in construction practice and in digital technology tools like building information modeling. The book is divided in four sections dealing with geological aspects of tunneling, analysis and design, new challenges in tunnel construction, and tunneling in the digital era. Topics from site investigation and rock mass failure mechanisms, analysis and design approaches, and innovations in tunnel construction through digital tools are covered in 10 chapters. The references provided will be useful for further reading.




Discovery to Catastrophe!


Book Description