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K. P. Bezrodnyi
K. P. Bezrodnyi
OAO NIPII Lenmetrogiprotrans
OAO NIPII Lenmetrogiprotrans

Articles

Mining
  • Date submitted
    2017-06-28
  • Date accepted
    2017-09-06
  • Date published
    2017-12-25

About rock pressure loads on tunnel linings constructed using trenchless method

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Data contained in requirements documents concerning recommended methods of loads calculation on tunnel linings and results of field studies of stress-strain state of the system «tunnel linings – rock» obtained during geotechnical monitoring when tunnels were constructed in various geological engineering conditions were considered in this paper. Recommendations about using methods of calculation on the basis of roof arch are provided by requirements documents regarding calculation of tunnel linings; at the same time natural stress field and stress-train performance of soil body, which influence to a great extent on stress-strain state of linings and supports are usually not taken into account. According to the results of field studies that were led in the framework of geotechnical monitoring during transport tunnels construction using technologies providing avoidance of tunnel face front and tunnel contour displacements, soil continuity is preserved and thus, a possibility of aching is avoided. Also this concerns water-saturated quaternary deposits during construction of running and escalator tunnels of underground rapid transit system of Saint-Petersburg with the help of hydraulic and earth-pressure balance-tunnel boring machines. In many cases of tunnels construction for different purposes when soil body displacements do not influence on continuity the calculations of linings and supports should be made with the help of continuum mechanics methods. 

How to cite: Bezrodnyi K.P., Lebedev M.O. About rock pressure loads on tunnel linings constructed using trenchless method // Journal of Mining Institute. 2017. Vol. 228. p. 649. DOI: 10.25515/PMI.2017.6.649
Geotechnology for development of solid mining fields
  • Date submitted
    2011-11-26
  • Date accepted
    2012-01-13
  • Date published
    2012-05-01

Settlement-free technologies in the construction of the Saint Petersburg subway

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Everywhere in Saint Petersburg the top strata are represented  by quaternary deposits, and  the ground water level is approximately 2,5 m down from the surface. Below the quaternary deposits, at depths of 40 to 60 m, are Cambrian (Proterozoic) clays. There are many ancient buildings of a historic and architectural value on the day surface that cannot tolerate day surface settlements. The construction of underground stations, and especially inclined escalator tunnels, causes surface settlements. Technologies of construction of escalator tunnels and station tunnels have been developed in Saint Petersburg to minimize such day surface settlements.

How to cite: Bezrodnyi K.P., Salan A.I., Maslak V.A., Markov V.A., Lebedev M.O. Settlement-free technologies in the construction of the Saint Petersburg subway // Journal of Mining Institute. 2012. Vol. 199. p. 190.
Topical issues in mining of ore and nonmetallic minerals
  • Date submitted
    2011-07-06
  • Date accepted
    2011-09-24
  • Date published
    2012-01-01

The designing of the constructions of the pillar underground station with applying of the low-settle building technology

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The intelligent technology of designing of the constructions of pillar  underground  station is adduced. Station is building with applying of low-settle technology, which takes into consideration main stages of the building process. The scheme of interaction of the system «support lining-soil massif» was accepted as basic scheme of calculations. The calculations of the stress-strain condition of constructions was performed with applying of finite-elements method.

How to cite: Protosenya A.G., Demenkov P.A., Karasev M.A., Belyakov N.A., Bezrodnyi K.P., Maslak V.A. The designing of the constructions of the pillar underground station with applying of the low-settle building technology // Journal of Mining Institute. 2012. Vol. 195. p. 124.
Application of the modern geophysical technologies for prospecting and exploration of mineral deposits
  • Date submitted
    2010-12-16
  • Date accepted
    2011-02-22
  • Date published
    2011-06-01

Ultra wide band gpr-method: success and problems

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An advanced method of ultra-wide band electromagnetic ground penetrating  probing has been developed. This method enables the running of geological probing measurements from both the surface of the land and the boring face during construction of tunnels up to a depth of one hundred meters, and in special cases, even deeper. Portable equipment of low weight is used for these underground radar measurements. Total weight is not more 15 kg. Time of geological cut measurement and its data processing is approximately 3 hours for probing depths of about 70 m.

How to cite: Boltintsev V.B., Ilyakhin V.N., Bezrodnyi K.P. Ultra wide band gpr-method: success and problems // Journal of Mining Institute. 2011. Vol. 194. p. 132.
Modern problems of geomechanics and geotechnology
  • Date submitted
    2003-06-03
  • Date accepted
    2003-07-17
  • Date published
    2004-01-01

Longitudinal studies of the stress-strain state of load-bearing structures in St. Petersburg Metro stations during operation

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The results of long-term studies of the stress-strain state (SSS) of structural elements of St. Petersburg subway stations are presented. The obtained data indicate the continued growth of stresses on the linings during operation. At steady mountain pressure at the end of the observations, the redistribution of the stress state in the cross section of the stations continues.

How to cite: Kulagin N.I., Bezrodnyi K.P., Lebedev M.O. Longitudinal studies of the stress-strain state of load-bearing structures in St. Petersburg Metro stations during operation // Journal of Mining Institute. 2004. Vol. 156. p. 11-16.