Rate Of Excavation In Hard Rock

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  • Rate Analysis of Excavation in Earthwork -Calculate

    Rate analysis of excavation in earthwork is the measure of quantity of excavation to be carried out, the cost of equipment, machineries and labors required for the same. The cost of excavation depends on the depth of excavation, type of soil, method of excavation to be carried out and the distance

  • Benchmark Drill and Blast and Mechanical Excavation

    Benchmark Drill and Blast and Mechanical Excavation Advance Rates for Underground Hard-Rock Mine Development P Stewart1, A Ramezanzadeh1 and P Knights1 ABSTRACT Faster development rates

  • rate of excavation in hard rock Mining

    rates for excavation of hard rock Crusher South Africa. new rate for excavation of hard rocks of the year 2012 in south africa.Excavation Contractors Find Top-Rated Excavation Pros. Read Reviews & Get Free Estimates! »More detailed

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  • SCHEDULE OF RATES Bharat Heavy Electricals

    BHEL Schedule of Rates BHEL ITEM NO DESCRIPTION UNIT Contractors Rate( Rs) Remarks 1 Earth work in surface excavation not exceeding 30cm in depth but exceedign 1.5 m in width as well as 10sqm on plan including disposal of excavation earth upto 50m and lift upto 1.5m, disposal soil to be levelled and neatly dressed: 1.1 All kinds of soil sqm 2073.60 2 Earth work in excavation by mechanical

  • Trench Excavation Methvin

    Methvin is a leading provider of online applications for the construction industry and our evolution is rooted in our commitment to offer only the most functional, flexible and easy to use cloud-based estimating and tendering solution since 2002.

  • CHAPTER 4 EXCAVATION AND EARTHWORK

    (f) Hard rock (requiring blasting): Any rock or boulder (more than 0.5 cum in volume) which requires use of mechanical plant or blasting for excavation or splitting. (g) Hard rock (Blasting prohibited):- Hard rock requiring blasting as described under (f) but where blasting is prohibited for any reason and excavation

  • CHAPTER 4 EXCAVATION AND EARTHWORK

    (f) Hard rock (requiring blasting): Any rock or boulder (more than 0.5 cum in volume) which requires use of mechanical plant or blasting for excavation or splitting. (g) Hard rock (Blasting prohibited):- Hard rock requiring blasting as described under (f) but where blasting is prohibited for any reason and excavation

  • SCHEDULE OF RATES Karnataka

    schedule of rates canal and allied works for the year : 2007-08 contents pages reference data 3 -- 5 notes on basic rates 6 -- 6 data for schedule of rates 7 -- 152 data for enabling works 153--156 revised by schedule of rates committee water resources department 1

  • Excavation in rock without explosives? ResearchGate

    Dear friends, Can somebody help to me calculate the production rate per hour and unit rate estimate of excavation in rock (Dolomite) which is to be carried out without explosives.

  • Bulk Excavation Methvin

    Methvin is a leading provider of online applications for the construction industry and our evolution is rooted in our commitment to offer only the most functional, flexible and easy to use cloud-based estimating and tendering solution since 2002.

  • RATE ANALYSIS OF EXCAVATION IN EARTHWORK

    2014-12-21· Rate analysis of excavation in earthwork is the measure of quantity of excavation to be carried out, the cost of equipment, machinery and labors required for the same. The cost of excavation depends on the depth of excavation, type of soil, method of excavation to be carried out and the distance where the excavated soil has to be disposed.

  • How Much Does Rock Excavation Cost? HowMuchIsIt

    2018-08-09· How much does rock excavation cost? Depending on the type of rock, the size of the job, placement, contractor rates, the equipment being used, and geographical location, most rock excavation jobs will cost $5 to $35 per cubic yard if a blasting method is used, but this price could be much higher if it were a public bid job. Because all jobs will be so unique, highly consider a free quote

  • 6.1. GENERAL

    Hard-rock TBMs can be used in relatively soft to hard rock conditions, and best when rock fracturing & weakness zones are predictable. The TBM is most economical method for longer tunnel lengths, in which its high investment cost and timely build-up can be utilized by the high advance rate of excavation. TBM excavation produces a smooth tunnel

  • excavation in hard rock 2012 rates in india

    SCHEDULE OF RATES Bharat Heavy Electricals. 3.3 Hard rock ( blasting prohibited) cum 325.25 4 Excavation work in foundation trenches or drains not exceedign 1.5 m in width or 10 sqm on plan including dressing of sides and ramming of >>Chat Online; Diaphragm wall Construction City University of Hong Kong

  • Soil Classification in Excavation for Measurement and Payment

    Soil Classification in Excavation for Measurement and Payment. All materials to be excavated is classified into one of the following classes and is paid for at the rate for that particular class of material. No distinction is made whether the material is dry, moist or wet.

  • 5. Rock Excavation Tools The National Academies Press

    Rock excavation tools disintegrate and remove the rock from boreholes and tunnels by four basic mechanisms: thermal spalling, fusion and vaporization, mechanical stresses, and chemical reactions, as shown in Figure 5.1. ''Novel" or "advanced" drilling tools utilize exotic systems such as lasers or

  • Soil Classification in Excavation for Measurement and Payment

    Soil Classification in Excavation for Measurement and Payment. All materials to be excavated is classified into one of the following classes and is paid for at the rate for that particular class of material. No distinction is made whether the material is dry, moist or wet.

  • Excavation Technology for Hard Rock Problems and Prospects

    Excavation Technology for Hard Rock Problems and Prospects S. T. 1A. Gillani, N. Butt1 1 Department of Geological Engineering, University of Engineering and Technology Lahore, Pakistan. Abstract Civil engineering projects have greatly benefited from the mechanical excavation of hard rock logy. Mining industry, on the other hand, is still

  • rates for excavation of hard rock

    rates for excavation of hard rock ; RATE ANALYSIS OF EXCAVATION IN Rate analysis of excavation in earthwork is the measure of quantity of . Excavation in earthwork for hard soil/ hard rock for a lead distance of 1km for .

  • Rate Of Excavation In Hard Rock gcinternational.co.za

    Hard Rock Tunnelling Methods Tunnel Excavation in Rock Tunnel Excavation in Rock Strength The tensile strength of rock is about 1/10th the compressive strength and the energy beneath the stressstrain The advance rate at which the excavation proceeds is a function of the. More Details

  • ITEM NO DESCRIPTION RATE RATE IN WORDS PER UNIT

    2.9.2 Hard rock (requiring blasting) 209.95 Rupees Two Hundred Nine and Paise Ninety Five Only 1 cum 2.9.3 Hard rock (blasting prohibited) 303.10 Rupees Three Hundred Three and Paise Ten Only 1 cum 2.1 Excavating trenches of required width for pipes, cables, etc including excavation for sockets, and dressing of sides, ramming of bottoms,

  • excavation in hard rock 2012 rates in india

    Hardrock TBMs can be used in relatively soft to hard rock conditions, and best when rock fracturing weakness zones are predictable. The TBM is most economical method for longer tunnel lengths, in which its high investment cost and timely buildup can be utilized by the high advance rate of excavation.

  • Rock breaking and Rock excavation Royex System

    The Royex rock breaking system is designed to break rock where conventional explosives are either prohibited by regulation or unsuitable for the task. Royex offers a simple, safe and efficient option for blasters, miners and civil engineers alike, where the impact of ground vibration, noise, dust and fly-rock control inhibit the use of

  • SUPPORT OF UNDERGROUND MIRARCO

    ‘Support of Underground Excavations in Hard Rock’ is the most complete and up-to-date manual for use in the design of excavations and support mechanisms for underground mines. This work resulted from close collaboration between industry and university in the

  • Microwave-assisted hard rock excavation TunnelTalk

    2018-01-25· Rock drilling and cutting technology has evolved quickly in the last century, but excavation of very hard rock still presents challenges such as low penetration rate and high wear rate of rock bits and cutting tools. In order to address this, microwave assisted rock breakage has recently been drawing further attention. Studies show that

  • Penetration, cutter wear and rate of advance for TBM

    Productivity forecasts are an essential basis for determination of costs and operational planning in construction projects. In tunnel-ling, tunnelling rate which, due to its physical dimension [m/d], is correctly referred to as „rate of advance“ in Austrian underground engineering standards, is the decisive productivity variable.