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au769412b2 - controlled foam injection method and means

AU769412B2 - Controlled foam injection method and means for fragmentation of hard compact rock and concrete - Google Patents Controlled foam injection method and means for fragmentation of hard compact rock and concrete ... 238000009412 basement excavation …

controlled foam injection progress towards

CONTROLLED FOAM INJECTION PROGRESS TOWARDS AUTOMATED HARD ROCK EXCAVATION

(pdf) 54) controlled foam injection method and means

Aug 25, 2010 · The foam may be generated externally to the actual controlled fracturing device in a conventional high-pressure reservoir using a variety of mixing and blending means.The general features of a device to use Controlled Foam Injection (CFI) for rock excavation or concrete demolition is illustrated in Figure 1

controlled foam injection for hard rock excavation

Patent US4900092. Sunburst Excavation Inc Controlled foam injection method and means for fragmentation of hard Controlled fragmentation of hard rock by pressurization of

non-explosive applications of the pcf concept for

Jul 01, 1998 · The specific energy required for fragmentation is similar to that of conventional drill-and-blast techniques and substantially lower than required by a tunnel boring machine. 5.0 Controlled Foam Injection A new non-explosive method for hard rock excavation, boulder breakage and concrete demolition has been devel- oped by Applied Geomechanics Inc. (Young 1996)

investigation of a hydraulic impact: a technology in rock

Aug 26, 2008 · U.S. Patent No. 5803551 (1998) Young, C.: Controlled foam injection method and means for fragmentation of hard compact rock and concrete. U.S. Patent No. 6375271 (2002) Denisart, J.P., Edney, B.E., Lemcke, B.: Method of breaking a hard compact material, means for carrying out the method and application of the method

us6375271b1 - controlled foam injection methodand means

Breaking hard compact materials, such as rock and concrete, is based upon a controlled-fracturing process. A high-pressure foam is used to pressurize a predrilled hole of appropriate geometry. The high-pressure foam is delivered to the bottom of the drilled hole by a barrel inserted into the hole. The barrel includes a seal near the bottom of the hole

controlled foam injection: a new and innovative non

Controlled foam injection, or CFI, is a highly effective, novel non-explosive rockbreaking technology that with appropriate implementation and application can replace traditional drilling and blasting methods with drilling and non-explosive breaking. The CFI technology is safer, more productive, environmentally friendly, and fully developed; and it can operate with the same flexibility as more traditional small-hole …

(54) controlled foam injection method andmeans for

The foam-injection method may be used to fracture, remove andlor excavate any hard material such as rock or concrete. The method may be used in either dry or water filled holes and the holes mav

controlled foam injectionprogress towards automatedhard

In the Controlled Foam Injection (CFI) method a viscous foam is injected into the bottom of a pre-drilled hole in the rock to be broken by means of a barrel incorporating an inexpensive and highly effective hole-bottom sealing method

non-blastingexcavation

In the Controlled Foam Injection (CFI) method a viscous foam is injected into the bottom of a pre-drilled hole in the rock to be broken by means of a barrel incorporating an inexpensive and highly

non-blasting excavation| springerlink

Different kinds of non-blasting methods for rock excavation are introduced in this chapter. As the restriction of the surrounding conditions, non-blasting method of rock excavation have to be use. ... Young C (1999) Controlled-foam injection for hard rock excavation. In: Proceedings of the 37th US rock mechanics symposium. Vail Google Scholar

de neef waterproofinginjectionsolutions | gcp applied

From the ground breaking through completion, De Neef® products can be used for soil injections and water control and remediation. De Neef® solutions can also be used during excavation or tunnel boring. De Neef® products can be used in every stage of underground construction. Certified around the globe

predicting epbm advance rate performance using support

Oct 01, 2020 · The excavation face, chamber and screw conveyors are conditioned using foam and/or liquid injection. Soil conditioning is often critical for effective EPBM operation. So-called manual mode conditioning involves operator-controlled injection of conditioning fluids, specifically the foam and liquid flow rates as well as the injection locations

dexpan non-explosive demolition agent: concrete removal

Dexpan is a cement with amazing 18,000 psi expansive strength when mixed with water. Poured into pre-drilled holes, Dexpan can crack and split concrete and rocks safely and quietly, while providing silent cracking. It is safe, easy and cost effective. Find Dexpan Distributors near you! or Call 575-332-9458 for your Huge Wholesale Discounts!

chapman young

The explosive stem-induced fracturing technique has been field tested in over 20 producing oil wells in western Pennsylvania. The technique basically involves the placement of a primary explosive charge in an expendable rathole below the pay zone(s) to be fractured and of a solid gravel near the top of the pay zone to cause local fracturing through the dynamic reflection of the explosive gases

foambreaksup concrete

Francis Otuonye (O-tun-yeh) and graduate student Jian Jia of Michigan Tech's Department of Mining Engineering teamed with Chapman Young of Applied Geodynamics, Inc. of Steamboat Springs, CO to test the new procedure, called Controlled Foam Injection (CFI). The method is a result of independent studies by Otuonye and Young to reduce the adverse effects of rock fragmentation by blasting and to control …

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