controlled foam injection for hard rock excavation

controlled foam injection for hard rock excavation

  • Controlledfoam injection for hard rock excavation

    A new nonexplosive method to excavate hard rock and concrete has been developed, tested and demonstrated in a mining environment The method uses highpressure foam to initiate, pressurize and propagate controlled fracturing in rock The foam is injected to the bottom of a relatively shallow predrilled hole in the rock or concrete to be broken by means of a barrel incorporating a hole bottomYoung, Chapman "Controlledfoam injection for hard rock excavation" Paper presented at the Vail Rocks 1999, The 37th US Symposium on RockControlledfoam injection for hard rock excavation | US

  • CONTROLLED FOAM INJECTION PROGRESS TOWARDS

    CONTROLLED FOAM INJECTION PROGRESS TOWARDS AUTOMATED HARD ROCK EXCAVATION CHAPMAN YOUNG Applied Geodynamics Inc P O Box 2129 Steamboat Springs, CO 80477 CHARLES GRAHAM CAMIRO Mining Division 933 Ramsey Lake Road Sudbury, Ontario P3E 6B5 Canada ABSTRACT The many attempts in recent years to develop nonexplosive rock excavationThe method utilizes the proprietary and patent protected Controlled Foam Injection (CFI) technique to fracture rock and concrete The use of highpressure foam as the fracturing medium completely eliminates the airblast, flyrock and toxic fume problems associated withControlled Foam Injection = CFI

  • CONTROLLED FOAM INJECTION PROGRESS TOWARDS

    CiteSeerX Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The many attempts in recent years to develop nonexplosive rock excavation techniques have used mechanical, hydraulic or gas pressurization approaches to exploit rock weakness in tension The use of highpressure foam to initiate, pressurize and propagate controlled fracturing in rock has been found to offer manyCONTROLLED FOAM INJECTION PROGRESS TOWARDS AUTOMATED HARD ROCK EXCAVATION By Chapman Young and Charles Graham Abstract The many attempts in recent years to develop nonexplosive rock excavation techniques have used mechanical, hydraulic or gas pressurization approaches to exploit rock weakness in tensionCONTROLLED FOAM INJECTION PROGRESS TOWARDS

  • Nonblasting Excavation | SpringerLink

    Different kinds of nonblasting methods for rock excavation are introduced in this chapter As the restriction of the surrounding conditions, nonblasting method of rock excavation have to be use Young C (1999) Controlledfoam injection for hard rock excavation In: Proceedings of the 37th US rock mechanics symposium Vail Google ScholarAuthors (view affiliations) Dingxiang Zou Integrates the eastern and western systems of theories and technologies in rock excavation Systematically introduces the theories, technologies and methods of rock excavation for civil and construction engineeringTheory and Technology of Rock Excavation for Civil

  • Concrete Products for TBM Sika

    costs for hard rock and gripper TBMs SikaFix® injection technologies are highly efficient in solving such problems as the cured material is easily cut by the TBM The performance is not changed in the presence of water SikaFix® 301 This is an acrylate based, 3component injection resin, speExcavation started from the S9238 shaft and mostly hard rocks were excavated till reaching at S8237 shaft After this point, the geological formation was Sultanbeyli Formation consisting of mainly sand, gravel, clay, and in some parts fractured blocky rocks (Fig 4a) Sultanbeyli Formation includes Orhanli, Dudullu, Altintepe and Ikiztepe divisions based on lithological characteristicsEffect of Clogging on EPB TBM Performance: A Case Study

  • Nonblasting Excavation ResearchGate

    In the Controlled Foam Injection (CFI) method a viscous foam is injected into the bottom of a predrilled hole in the rock to be broken by means of a barrel incorporating an inexpensive and highlycosts for hard rock and gripper TBMs SikaFix® injection technologies are highly efficient in solving such problems as the cured material is easily cut by the TBM The performance is not changed in the presence of water SikaFix® 301 This is an acrylate based, 3component injection resin, speConcrete Products for TBM Sika

  • (PDF) Evaluation of rock excavation technologies for

    PDF | On Jul 1, 2010, Sp Singh published Evaluation of rock excavation technologies for seismically active mines | Find, read and cite all the research you need on ResearchGatePolyurethane injection, or foam jacking, is a fast and effective way for lifting and rehabilitating your home foundation The process is minimally invasive, injections made through 1/2 inch holes in or around your foundation, and fast We use a specialized structural polyurethane (think about what goes into a bowling ball) to lift and realignHome Foundation Lifting CLSAtlanta

  • Hybrid TBM Excavation in Challenging Mixed Ground

    Excavation in mixed ground conditions is always a challenge, but unde r a densely urban environment the stakes become even higher At India’s Mumbai Metro, two 665 m hybridtype rock/soft ground Single Shield TBMs are succ essfully boring parallel 28 km tunnels in basalt rock with transition zones of shale, tuff, and breccia below the city• Ripper bucketfor hard and rock ground —Capacity SAE heaped062 m3 081 yd3 CECE heaped 056 m3 073 yd3 Width 990 mm 390" • Singleshank ripperand threeshank ripper are recommended for rockdigging and crushing, hard soil digging, pavement removal works, etc wwwKomatsu CEN0004909 Materials and specifications are subject toCEN0004909 PC2008, PC200LC8 CRAWLER

  • ACE CENTRO ENTERPRISES

    Ace Centro Enterprises is one of the most trusted suppliers of construction equipments and associated products since 1998 We offer a broad spectrum of engineering products, technical services and rental solutions to our clients involved in the Construction, Marine, Petrochemical and Quarrying sectorsHighlights A procedure for quantification of stickiness of soft clay pastes is presented A device for measurement of tangential adhesion between clay and steel is introduced Tangential adhesion is found to correlate with stickiness Dispersing soil conditioners are reducing tangential adhesion At lower water contents the effect of dispersing chemicals diminishesStickiness and adhesion of conditioned clay pastes

  • A case study of twin bored tunnelling under mixedface

    A case study of twin bored tunnelling under mixedface soil Bendemeer joT station project (Downtown iine 3)I pingapore Chee tee Ongi)I giong Poh Ee i)I Thiri pui)I hwet Yew Yongv and Ariaratnam hulaindranv) i) janaging DirectorI ONE pjAoT Engineering Pte itdI pingapore & jalaysiaThe tunnel excavation section passes through Bao’an International Airport, which imposes a high demand on the accumulated ground surface settlement controlled within the targeted range The embedded depth of the tunnel was in the range of 12–14 m Each tunnel segment consists of seven subsegmentsTimeseries prediction of shield movement performance

  • remediation using polyurethane foam/resin grout in

    Polyurethane (PU) foam/resin injection is a method of rapid ground repair and remediation without the process of excavation and replacement The objectives of this method are ( a ) to remediate problematic foundation soil by injecting lightweight PU foam/resin at high pressure and ( b ) to increase the bearing resistance, hence reducing theA course of rock large enough to bridge the throat of the sinkhole is placed at the bottom of the excavation Courses of progressively finer rock and gravel are compacted above the base course A geotextile fabric may be placed above the finest gravel course to prevent excessive loss of the uppermost course, which may consist of sand and/or soilSinkhole Remediation & Repair with Injection Method

  • Home Foundation Lifting CLSAtlanta

    Polyurethane injection, or foam jacking, is a fast and effective way for lifting and rehabilitating your home foundation The process is minimally invasive, injections made through 1/2 inch holes in or around your foundation, and fast We use a specialized structural polyurethane (think about what goes into a bowling ball) to lift and realignTwo 665m diameter Crossover TBMs completing the 28km twin running tunnels for Package 1 for the Mumbai Metro Line 3 project The hybridtype rock/soft ground single shield machines have completed the first two of their three drives through challenging mixed ground conditions of basalt rock with transition zones of shale, tuff, and breccia, taking about 90 production days to complete theCrossover TBM for hard rock Mumbai Metro drives

  • Hybrid TBM Excavation in Challenging Mixed Ground

    Excavation in mixed ground conditions is always a challenge, but unde r a densely urban environment the stakes become even higher At India’s Mumbai Metro, two 665 m hybridtype rock/soft ground Single Shield TBMs are succ essfully boring parallel 28 km tunnels in basalt rock with transition zones of shale, tuff, and breccia below the city• Ripper bucketfor hard and rock ground —Capacity SAE heaped062 m3 081 yd3 CECE heaped 056 m3 073 yd3 Width 990 mm 390" • Singleshank ripperand threeshank ripper are recommended for rockdigging and crushing, hard soil digging, pavement removal works, etc wwwKomatsu CEN0004909 Materials and specifications are subject toCEN0004909 PC2008, PC200LC8 CRAWLER

  • CHINA RAILWAY CONSTRUCTION HEAVY INDUSTRY

    Hardox plate, composite chromiumcarbide wearresistant plate as well as hard alloy block with high wear resistance are materials of the cutterhead, which ensures long service time Double row cylindrical roller thrust bearing is used in the masterdrive, ensuing long service lifetime and high safetyAce Centro Enterprises is one of the most trusted suppliers of construction equipments and associated products since 1998 We offer a broad spectrum of engineering products, technical services and rental solutions to our clients involved in the Construction, Marine, Petrochemical and Quarrying sectorsACE CENTRO ENTERPRISES

  • A case study of twin bored tunnelling under mixedface

    A case study of twin bored tunnelling under mixedface soil Bendemeer joT station project (Downtown iine 3)I pingapore Chee tee Ongi)I giong Poh Ee i)I Thiri pui)I hwet Yew Yongv and Ariaratnam hulaindranv) i) janaging DirectorI ONE pjAoT Engineering Pte itdI pingapore & jalaysiaThe tunnel excavation section passes through Bao’an International Airport, which imposes a high demand on the accumulated ground surface settlement controlled within the targeted range The embedded depth of the tunnel was in the range of 12–14 m Each tunnel segment consists of seven subsegmentsTimeseries prediction of shield movement performance

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