Major rehabilitation of the A-333 road using the «BlokTech» technology

Major rehabilitation of the A-333 road using the «BlokTech» technology
To provide drainage and lower the groundwater level, a deep drainage system using «БлокТех» modules is planned.
Customer
Federal State Institution "Administration of Federal Highways "South Baikal"
Implementation dates
Работы выполнялись в период с марта 2022 по ноябрь 2022 г.
Location
A-333 Motorway: Kultuk – Mondy – border with Mongolia
Object dimensions
Общее протяжение трассы составляет 6,504 км
  • Project Description

    The work site is located in the south-eastern part of the Republic of Buryatia, within Tunkinsky District.

    The beginning of the section, PK0+0.00, is located on the axis of the existing A-333 motorway and corresponds to existing km 210+000 and design km 207+931. The end of the section, PK65+04, corresponds to existing km 216+500 and design km 214+435. The total route length is 6.504 km.

    According to the design brief and the results of the technical and economic surveys conducted, the road category for the section under consideration is IV, with two traffic lanes

    Technical Solutions

    Based on the results of engineering and geological surveys, in order to drain water and lower the groundwater level due to the identification of waterlogged subgrade soils, marshy areas and a high groundwater level, the design documentation provides for the installation of a deep drainage system on the uphill side of the slope, using «БлокТех» modules wrapped in nonwoven geotextile.

    Application

    • Water drainage in marshy areas
    • Lowering the level of waterlogged subgrade soils
    • Intercepting groundwater

    In addition, to convey water from the longitudinal drainage system, a transverse deep drainage system using «БлокТех» modules wrapped in nonwoven geotextile is provided at 50 m intervals. The longitudinal drainage system includes inspection chambers made of «БлокТех» modules wrapped in nonwoven geotextile. Drainage systems must be installed during periods of below-zero average daily temperatures to prevent possible thawing of permafrost soils.

     

     
    Advantages
    • Fast installation - The tank frame with V=1000 m3 is installed in 1 day without the use of heavy construction equipment
    • Working volume is 95%
    • Convenient storage and transportation (transporting all «BlokTech» elements required to construct a 300 m3 tank requires just 1 standard European truck)
    • Resistance to corrosion, decay, aggressive environments, UV radiation and temperature fluctuations
    • Operation at temperatures from minus 60 to plus 60 °
    • Drainage systems made from «BlokTech» modules enable the construction of inspection wells
    • High water throughput of drainage systems
    • High load-bearing capacity of structures

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