Segmental Wick Drain Mandrels for Variable Installation Depths
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Solution Overview
Problem
Conventional wick drain installation methods require a fixed-length mast and mandrel, limiting flexibility in installation length and preventing installation in scenarios like beneath power lines.
Innovation Solution
A segmental installation method using a shoe coupler to splice together multiple mandrel segments, allowing installation of any length of wick drain with a standard 40′ wick drain rig.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-length mast and mandrel are used for wick drain installation, then the installation process is simple and straightforward, but the installation length is limited and cannot be adapted to different depth requirements
Solution Approach 1:
The mandrel is divided into multiple detachable segments that can be connected together to form a mandrel of any required length. Each segment has coupling mechanisms at its ends, allowing them to be assembled in sequence during installation. This segmentation enables the equipment to adapt to different installation depths while maintaining operational simplicity.
Solution Approach 2:
The mandrel length is made dynamic and adjustable rather than fixed. The system allows for adding or removing mandrel segments based on the specific installation requirements, transforming the static fixed-length structure into a dynamic configurable system that can accommodate varying depths.
2Length of moving object
If a standard 40′ wick drain rig is used, then the equipment is standardized and easy to operate, but it cannot install wick drains deeper than the mandrel length allows
Solution Approach 1:
The mandrel is divided into multiple detachable segments that can be connected together to form a mandrel of any required length. Each segment has coupling mechanisms at its ends, allowing them to be assembled in sequence during installation. This segmentation enables the equipment to adapt to different installation depths while maintaining operational simplicity.
Solution Approach 2:
The segmental mandrel sections are designed to nest within each other or connect in a telescoping manner, allowing compact storage and transport of multiple segments while enabling extended installation depth when needed. The segments can be stored in a nested configuration and deployed sequentially during installation.
Data Source
AI summary
The invention described herein includes materials and methods for segmental wick drain installation for versatile groundwater management. The invention comprises modified mandrels that may be coupled together for segmental wick drain installations to desired depths that are not achievable using currently known methods. Each modified mandrel is configured with a shoe coupler that may be permanently affixed to none end and configured with a means for securing the shoe coupler to a modified end of another mandrel. Each shoe coupler includes transverse bore holes through which set pins may be inserted that engage with an end of another modified mandrel with grooves corresponding to the locations of the bore holes when set pins are inserted. Once the wick drain is installed to the desired depth, the mandrels may be extracted and uncoupled by removing the set pins. The modified mandrels may be prefabricated and reused, ideal for multiple installations.