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Method and results of an experiment to measure the mechanical drilling speed and durability of the 6L-145-Ok bit in relation to drilling conditions and rock hardness

  • Mechanization and Automation in Mining
  • Published:
Soviet Mining Aims and scope

Summmary

  1. 1.

    The lack of a device for measuring the “drillability” at any point in a borehole, together with frequent variations in the hardness (drillability) of the rocks, causes a great deal of difficulty in experiments to find the mechanical drilling speed and bit durability in terms of the drilling conditions and the rock hardness.

  2. 2.

    In drilling by milling-type bits, the drillability of the rock at any point in the borehole can be determined from the mechanical drilling speed in standard conditions.

  3. 3.

    The mechanical drilling speed can be plotted versus the rock hardness and drilling conditions by regular periodic drilling of the variable rock in standard and test conditions, all the drilling parameters being recorded automatically.

  4. 4.

    The bit durability can be determined as the product of the mechanical drilling speed in rock of given hardness in given conditions, multiplied by the bit lifetime in the same contions.

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Literature Cited

  1. M. M. Protod'yakonov and B. M. Loguntsov, Drillability and Hardness in Rocks, Topics in Mining [in Russian], Moscow, Ugletekhizdat (1958).

    Google Scholar 

  2. A. P. Bakhchisaraitsev, Classification of Rocks and Technical Norms of Work on Borehole Drilling [in Russian], Moscow, Gosgeoltekhizdat (1963).

    Google Scholar 

  3. G. I. Rakhleev, A Method of Determining the Maximum Drilling Speed, Izv. Vuzov, Gornyi Zh., No. 6 (1964).

  4. L. I. Baron, Determining the Resistance of Rocks to Fracture by Various Types of Drilling in the Conditions of Workings of the Korkinsk, Bakal'sk and Shershnevsk-Smolinsk Deposits, Brief Scientific Reports of the Skochinskii Mining Institute [in Russian], Moscow, Izd. A. A. Skochinskogo IGD (1964).

    Google Scholar 

  5. S. A. Postash, A Method of Industrial Testing of Milling-type Bits in Continuous Drilling and Investigation of the Influence of the Main Factors on Their Lifetimes with the Aim of Improving Them (Author's Abstract of Dissertation) [in Russian], Baku (1960).

  6. L. I. Baron, Laboratory Investigation of the Mining Properties of Ores and Rocks of the Kadamzhaisk and Maslyansk Mines [in Russian], Moscow, Izd. A. A. Skochinskogo IGD (1962).

    Google Scholar 

  7. L. I. Baron, Sample Taking to Determine the Mining-Geological Properties of Rocks by the Method of Mechanical Testing of the Rocks to Destruction in the Laboratory [in Russian], Moscow, Izd. A. A. Skochinskogo IGD (1966).

    Google Scholar 

  8. V. D. Butkin, M. A. Frank, and B. F. Bryukhov, A System for Measuring the Parameters and Coefficients of Variation of the Drilling Indexes in Experimentation on Milling-Type Rigs in Quarries, In Symposium of Scientific Work of the NIIOGR Institute [in Russian], Moscow, Nedra (1964).

    Google Scholar 

  9. S. P. Kaloshin, Estimating Indices in Drilling [in Russian], Tr. Inst. Gorn. Dela AN KazSSR, Vol. 17, Alma-Ata, IZd. AN KazSSR (1965).

    Google Scholar 

  10. S. I. Davydov and V. K. Rubtsov, Milti-Row Blasting [in Russian], Moscow, Nedra (1965).

    Google Scholar 

  11. Ya. A. Gel'fgat, A. V. Orlov, G. É. Finkel'shtein, and V. V. Cherkaev, On the Question of Establishing Certain Empirical Laws Relating the Indexes of Bit Performance to the Parameters of Drilling Conditions in Industrial Conditions [in Russian], Tr. VNIIBT, Drilling Deep Boreholes, IX, Moscow, Gostoptekhizdat (1963).

    Google Scholar 

  12. I. M. Biryukov, A. New Milling-Type Bit for Drilling Boreholes in Hard Rocks, Gorn. Zh., No. 10 (1961).

  13. L. I. Baron, B. M. Loguntsov, and E. Z. Pozin, Determining the Properties of Rocks [in Russian], Moscow, Gosgortekhizdat (1962).

    Google Scholar 

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Authors
  1. G. I. Rakhleev
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Additional information

VNIITsVETMET, Ust'-Kamenogorsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 2, pp. 71–80, March–April, 1967.

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Rakhleev, G.I. Method and results of an experiment to measure the mechanical drilling speed and durability of the 6L-145-Ok bit in relation to drilling conditions and rock hardness. Soviet Mining Science 3, 156–162 (1967). https://doi.org/10.1007/BF02497278

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  • DOI: https://doi.org/10.1007/BF02497278

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