For more of this book, click here. In the process of percussion-cable drilling, bore hole walls are reinforced with casing pipes to prevent collapse and to isolate water-bearing horizons. The low driving capacity of a drilling tool and the lack of reliable means for extracting intermediate columns when filters are exposed lead to a situation … Continue reading Immersion And Extraction Of Casing Pipes In The Process Of Percussion-Cable Drilling Of Boreholes
For more of this book, click here. During impact-cable drilling, the destruction of hard and cohesive soils by existing drilling tools occurs through periodic impacts of the rock-breaking tool on the bottom of the well. Due to the low efficiency of such action, it requires significant time and cost. It is established that the rock-breaking … Continue reading Driving Through Hard And Cohesive Soils During Impact-Cable Well Drilling In Water
For more of this book, click here. Geotechnical boreholes must satisfy two goals: provide reliable information about the geological structure of the site and give sufficient data on the physical and mechanical properties of the soils. To solve these tasks, the technique and technology of drilling geotechnical boreholes must allow obtaining soil cores along the … Continue reading Drilling Of Geotechnical And Other Exploratory Boreholes
For more of this book, click here. Boreholes constructed in construction serve various purposes, diameters, and depths (listed below). PurposeDiameter, mmMaximum Depth, mFor cast-in-place piles500–120025Geotechnical100–30030Freezing100–20030Blasting200–25020Water supply200–400500Dewatering300–600300 They are used for constructing cast-in-place piles, conducting geotechnical surveys, performing soil-freezing operations, placing explosive charges when executing blasting operations. Water supply wells, which are constructed for water supply … Continue reading General Information On The Use Of The Vibratory Method In Drilling Operations
Vulcan sometimes liked to think that it was the "only game in town" when it came to pile drivers. But we knew it wasn't true. Before diesel and vibratory hammers became common and air/steam hammers "ruled the roost" Vulcan's main competitor was McKiernan-Terry (MKT.) Based in northern New Jersey (its last facility there was in … Continue reading McKiernan-Terry
The GeoInstitute has chosen to feature George Goble's Terzaghi Lecture, it's here: https://youtu.be/ujXSyvB4iPc?si=6xdRze61jFt-KiFf He covers the waterfront (complete with a major marine project) on the WEAP/CAPWAP method of pile dynamics. The methods he and his colleagues pioneered have become standard in driven pile practice. I have a few comments on the lecture as follows: He … Continue reading George Goble’s 2007 Terzaghi Lecture
In the earlier post Some Insight into the Origin of Vulcan’s Pile Hammer Valve System we looked at the Corliss valve and its application first to steam engines and later pile hammers. In this post we'll look at these engines from another standpoint: analysing their rotational action using the method of instantaneous centre of rotation. The … Continue reading Solving a Dynamics Problem using the Instantaneous Centre of Rotation with a Vulcan Design
It is our general practice to post books of general engineering interest on our companion site Chet Aero Marine. This, however, is an exception because vibration technology in general and vibratory hammers in particular are a special interest. In this case however the book devotes some space to the topic, specifically Section 45, Vibratory Pile … Continue reading Fundamentals of Vibration Engineering: I. I. Bykhovskii
The places in the news these days with the war in Iran--Kharg Island, Sharjiah, the Straits of Hormuz and others--bring back memories for those of us who were involved in the "oil patch" and especially the offshore oil patch. And, for those of us who look at this "long view," it's surprising that the geopolitics … Continue reading Vulcan and Yanbu: Planning Ahead
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