In dredging, trenching, (deep sea) mining, drilling, tunnel boring and many other applications, sand, clay or rock has to be excavated. This book gives an overview of cutting theories. It starts with a generic model, which is valid for all types of soil (sand, clay and rock) after which the specifics of dry sand, water saturated sand, clay, atmospheric rock and hyperbaric rock are covered. For each soil type small blade angles and large blade angles, resulting in a wedge in front of the blade, are discussed. For each case considered, the equations/model for the cutting forces, power and specific energy are given. The models are verified with laboratory research, mainly at the Delft University of Technology, but also with data from literature.
In dredging, production estimating is carried out mainly with analytical physical models of the different dredging processes.
Slurry transport of settling slurries and cutting processes in sand, clay and rock are already covered in two other books by the author.
Other processes like hopper sedimentation and erosion, water jet fluidization, cutter head spillage, pump/pipeline dynamics and clamshell dredging are covered in this Special Topics Edition.
New topics may be added in the near future.
Introduction to Non-Government Organizations ( NGOs)
This document is an overview of the operation, maintenance, and repair of a marine jet drive. A brief history of the origin of the jet boat is provided. The characteristics of operating a craft with a jet drive are discussed, along with the advantages and disadvantages of using this type of design. The principles of the pump’s operation are explained as well as considerations for improving its performance. The document concludes with a review of common maintenance and repair procedures.
This open educational resource is designed for use by undergraduate and graduate ocean science, natural resource, fisheries and wildlife, and environmental policy students enrolled in a ten-week academic quarter. The purpose of this project is to provide students and non-law professionals with a freely accessible, clearly written guide to support engaging and effective learning. As such, the book serves as a gateway and an invitation to become a well informed, committed and involved ocean citizen as well as to explore the field beyond our course study.
In dredging, trenching, (deep sea) mining, drilling, tunnel boring and many other applications, sand, clay or rock has to be excavated.The book covers horizontal transport of settling slurries (Newtonian slurries). Non-settling (non-Newtonian) slurries are not covered.
An interactive reference work on the UN Sustainable Development Goals with short introductions to the goals, the official translations and numbering of the 17 goals and the 169 underlying targets, zoom in / zoom out at goal or target level, powerful search function, and "deep" hyperlinks to the UN website about the goals.Compact and online available interactive reference work that can be useful in all kinds of learning activities related to the SDGs.Currently available in English, Spanish, French and Dutch.Free to use online, but also to download and "embed" in other websites (HTML5); the source code is also freely available (MMAP).
- Environmental Science
- Health, Medicine and Nursing
- Business and Communication
- Career and Technical Education
- Criminal Justice
- Electronic Technology
- Environmental Studies
- Maritime Science
- Life Science
- Forestry and Agriculture
- Measurement and Data
- Physical Science
- Cultural Geography
- Ethnic Studies
- Political Science
- Social Work
- Women's Studies
- Material Type:
- Primary Source
- Unit of Study
- Pieter van der Hijden
- Date Added: