
Mazier core barrel
Mazier Core Barrel
Mazier core barrel showing cutting shoe projecting in front of core
bit
The automatic Mazier core barrel is designed for obtaining
undisturbed core samples in very soft soils.
This core barrel has a spring-loaded inner tube assembly. When drilling in soft formations, the core lifter case protrudes up to 50mm in front of the bit, and acts as a cutting shoe. The soft core is protected from the water flush (see Figure a).
When coring in harder materials, the spring loaded inner tube comes
under pressure and the inner tube retracts, so now the core lifter
case assumes a normal position (see Figure b).
A PVC coreliner is used inside the inner tube to retain the core, and a “basket” catcher can be used to prevent soft materials from slipping out.
This type of core barrel is used widely in some parts of Europe and Australasia and is reported to give 100% recovery in soft formations, such as sands, silts and marls.
It is available in 101mm hole diameter (74mm core) and can be used in conjunction with T2-101 and T6-101 core barrels which are more suited for hard rocks.
The 74 mm diameter core obtained with the mazier is compatible with the commonly used laboratory triaxial testing apparatus.
Advantages:
1. Undisturbed core samples from soft soil 0.1MPa
2. Nil wall coefficient
Technical Data of Mazier Core Barrel | |
Specification | Core Barrel Type |
Mazier 101 | |
Hole Diameter (mm) | 101 |
Core Diameter (mm) | 74 |
Hole Area (cm2) | 80.2 |
Core Area (cm2) | 43 |
Thread Connection in Head | NW |
Recommended Casing | M116 |
*Cross-over sub required for drill rods not matching the thread connection in core barrel head |
Key to Main Parts of Mazier Core Barrel Assembly
Complete core barrel consists of:
1. Core Barrel Head
2. Outer Tube 1.0m
3. Inner Tube 1.0m
4. PVC Coreliner
5. Basket Core Lifter
6. Cutting Shoe
7. T.C. Core Bit
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For more information, please contact:
ROSCHEN INC.
ROSCHEN GROUP LIMITED
ROSCHEN HOLDINGS LIMITED
Skype: ROSCHEN.TOOL , ROSCHEN_GROUP
WeChat: +86-137 6419 5009 ; +86-135 8585 5390
WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390
Email: roschen@roschen.com ; roschen@roschen.net
Website: http://www.roschen.com ; http://www.roschen.net
http://www.roschen.cn ; http://www.roschendrill.com
http://www.roschenmining.com ; http://www.roschendrilling.com
ROSCHEN GROUP
ROSCHEN GROUP
ROSCHEN Group has the world class advanced equipment like 12000 tons forging, metal processing plant, heat treatment workshop, numerical control plant, Advanced five-axis machining center, etc. professional technical and skilled team to ensure mining, mineral tools, equipment products quality stable and reliable.
ROSCHEN Group Limited is a manufactory with years of research and development for the mining, mineral tools, equipment. We are capability to produce high performance world class products and control excellent quality. Our main product includes tricone bit, diamond core bits, drill pipe, core barrel, TCI tricone bit, mill tooth tricone bit, RC hammer, DTH bit, etc.
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