controlled foam injection for hard rock excavation
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Mining and Tunneling - BASF
Our technology portfolio for mining and tunneling includes: TBM Chemistries. The Master Builders Solutions brand offers a comprehensive line of TBM specific products for improving operational efficiency in soft ground and hard rock TBM excavation.
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Specification and Guidelines for the use of specialist ...
Specification and Guidelines for the use of specialist products for Mechanised Tunnelling (TBM) in Soft Ground and ... The cutting tool used for hard rock excavation. • Earth Pressure Balanced Machines (EPBM) ... • Foam Injection Ratio (FIR) ...
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Laboratory Testing of Materials for Tunnel Boring Machine ...
atmospheric pressure. Foam injection renders the material more homogeneous, thus facilitating its excavation [2]. • The Dual-mode TBM is developed to receive two types of removal equipment, each one corresponding to a given type of ground. In this example, the TBM can either operate in open mode as a hard rock shield
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Solutions for Underground Construction Injection - BASF
for use in coal mining and are also used widely in hard rock mining and tunneling. 3 ... • Controlled injection with limitation of grout spread in very ... 30 ~ 70s to 3 High quality foam for ground consolidation in coal mines and civil projects. Consolidation of fractured rock in tunnels, shafts
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Rusmar Foam Technologies | Foam Systems
Rusmar’s foam products are used as alternate daily cover material to save landfill airspace, for the control of dust, odors and VOC's during the excavation and storage of contaminated soil at remediation sites and for ventilation control, cellular concrete and rock dust application in the mining industry.
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Soil Stabilization & Ground Improvement Solutions | URETEK ICR
Choose URETEK for your soil stabilization solutions! URETEK's high-density polymer expanding foam injection strengthens weak or loose soil strata, re-levels concrete, and restores the …
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CONTROLLED FOAM INJECTION PROGRESS TOWARDS …
@MISC{Young_controlledfoam, author = {Chapman Young and Charles Graham}, title = {CONTROLLED FOAM INJECTION PROGRESS TOWARDS AUTOMATED HARD ROCK EXCAVATION}, year = {}} The many attempts in recent years to develop non-explosive rock excavation techniques have used mechanical, hydraulic or gas ...
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Frost Heave Mitigation Using Structural Polymer Injection
1 Frost Heave Mitigation Using Structural Polymer Injection 2 TRB #14-1029 3 August 1, 2013 4 Word Count: 4724 ... Encampment, WY. As an alternative to excavation, he placed three feet (1 m) of silty fill over ... Frost Heave Mitigation Using Structural Polymer Injection ...
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CONTROLLED FOAM INJECTION PROGRESS TOWARDS …
The general features of a device to use Controlled Foam Injection (CFI) for either rock excavation or secondary breakage are illustrated in Figure 1. A foam injection tube or barrel is inserted into a pre-drilled hole. The successful sealing of this tube into the hole, as indicated in Figure 1, is needed for the proper operation of the CFI process.
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Investigation of a hydraulic impact: a technology in rock ...
Young, C.: Controlled foam injection for hard rock excavation. In: 37th U.S. Rock Mechanics Symposium, Vail, Colorado (1999) Google Scholar
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54) CONTROLLED FOAM INJECTION METHOD AND MEANS FOR ...
Controlled-foam injection for hard rock excavation Chapman Young Applied Geodynamics Inc., Steamboat Springs, Colorado, USA ABSTRACT: A new non-explosive method to excavate hard rock and concrete has been developed, tested and demonstrated in a mining environment.
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29th International Conference on Ground Control in Mining
29th International Conference on Ground Control in Mining 1 ... patented a method for excavation of hard rock ... Controlled foam injection system (after Young, 1996). ...
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Products for TBM - Sika AG
Grippers for hard rock and the Single Shield TBM for tunneling through rock and other stable, non- ... excavation and progress. Sika® Foam TBM 20 Disc cutter cleaner and clay remover. ... PRODUCTS FOR TBM INJECTIONS. 8 CONCRETE PRODUCTS FOR TBM BELT REPAIR
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Controlled-foam injection for hard rock excavation - OnePetro
Controlled-foam injection for hard rock excavation ... pressurize and propagate controlled fracturing in rock. The foam is injected to the boRom of a relatively shallow pre-drilled hole in the rock or concrete to be broken by means of a barrel incorporating a hole boRom sealing method. ... For over a century explosive blasting has been the ...
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CA2276115A1 - Controlled foam injection method and means ...
Controlled foam injection method and means for fragmentation of hard compact rock and concrete ... Non-explosive drill hole pressurization method and apparatus for controlled fragmentation of hard compact rock and concrete US5385206A (en ... Controlled foam injection method and means for fragmentation of hard compact rock and concrete ...
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Controlled Foam Injection = CFI
The method utilizes the proprietary and patent protected Controlled Foam Injection (CFI) technique to fracture rock and concrete. The use of high-pressure foam as the fracturing medium completely eliminates the airblast, flyrock and toxic fume problems associated with explosive based techniques.
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Reducing the Cutterhead Wear at EPB Tunnel Boring Machines ...
Four independent injection ports allowed for good control of foam and other additives into the ground at the face. The TBM excavated mainly through stiff red clays under about 2 bar earth pressure, but also experienced short sections of mixed face rock and earth, particularly while …
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Saimm 201703 mar by SAIMM -
#23062**7/8,25%843 7-0423 Controlled foam injection (CFI) is based on extensive research that has been funded by governments, mining companies, and OEMs. CFI breaks the rock in tension by ...
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Controlled Foam Injection | Aqueous Foam Technology | Aquafoam
Controlled Foam Injection Method and Means for Fragmentation of Hard Compact Rock and Concrete Young, C., U.S. Patent 6,375,271 , April 23, 2002 Young, C., " Controlled Foam Injection for Hard Rock Excavation "
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Chemical Demolition Agent: Non-Explosive Concrete Demolition
Controlled Rock & Concrete Demolition. Bustar expansive grout has been used in thousands of projects ranging from concrete removal and concrete demolition of structures ranging ... If you are working in pulp and paper, power, heavy industrial, steel, site excavation, or trenching, we understand your application and bring real world expansive ...
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Slurry TBM, EPB TBM : Soft ground machines
Hard rock machines; Soft ground machines. ... Soft ground machines. Slurry TBM (Benton’ Air®) Earth pressure TBM (EPB TBM) Slurry TBM (Benton’ Air®) ... This screw compensates the pressure difference between the working face and atmospheric pressure. Foam injection renders the material more homogeneous, thus facilitating its excavation. ...
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Investigation of a hydraulic impact – a technology in rock ...
The controlled-foam injection (CFI) method invented by Young [1, 4] has a number of advantages, including lower maximum pressure and the maintenance of pressure during fracture by virtue of the compressibility of the foam. Another non-explosive rock breaking method was invented and
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40 free Magazines from AQUAFOAM.COM
46 Magazines from AQUAFOAM.COM found on Yumpu.com - Read for FREE ... Controlled-foam injection for hard rock excavation. Controlled-foam injection for hard rock excavation ... Colorado, Compact, Injection, Ofthe, Viscosity, Excavation; Controlled-foam injection for hard rock excavation. Controlled-foam injection for hard rock excavation. from ...
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T4W
the components and control systems incorporate today’s technology, making it even more productive and reliable. ... and without foam injection, is available. A 7 gal. / 26.5 l or a 60 gal. / 227 l DHD ... Selecting an T4W as your next waterwell rig is a …
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Foam breaks up concrete - Mining Engineering
Otuonye and colleagues feel that Controlled Foam Injection (CFI) fracturing is the answer to the problem. "The preferred demolition/excavation method should have the ability to pressurize a controlled fracture in such a way that pressures can be maintained to increase the number of fractures," he says.
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Chapman Young - Academia.edu
Chapman Young studies Experimental Mechanics and Pulse Shaping. Smart an sloe. ... Controlled Fragmentation of Hard Rock by Pressurization of the Bottom of a Drill Hole more. by Chapman Young. ... CONTROLLED FOAM INJECTION METHOD AND MEANS FOR FRAGMENTATION OF HARD COMPACT ROCK AND CONCRETE more.
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RockFrac rock splitting mortar for no vibration non ...
Rock excavation, quarrying and other controlled demolition with RockFrac® is fast, economical and convenient. It is safe, environmental friendly, non-explosive, easy to use and controllable. Rock splitting mortar is the answer when your job calls for the demolition of rock …
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Injection - BASF
Excavation face Injection drillhole Tunnel invert Injection lance. Ordinary Portland Cement CEM I 52.5 40 µm ... controlled injection is needed to limit grout spread in very permeable rock masses and ... Brittle foam for cavity filling in rock, gravel and coal, not sensitive to …
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NFM Technologies - YouTube
Tunnel excavation with NFM Technologies Double shield TBM ... is used for digging tunnels in hard rock formations (fractured rock, soft rock). ... NFM Technologies EPB TBM: foam injection test in ...
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Controlled-foam injection for hard rock excavation
Controlled Foam Injection (CFI) for rock excavation or concrete demolition is illustrated in Figure 1. A foam injection tube or barrel is inserted into a pre-drilled hole. The successful sealing of this tube into the hole, as indicated in Figure 1, is needed for the proper operation of the CFI process. Consistent
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