City Circuit: Prague has the results of a geotechnical survey, what’s next?
In Prague it remains to complete part of the internal circuit between the exit of the Blanka tunnel in Pelc-Tyrolka and Štěrboholy, including the Libeň connection, which will connect the circuit to the D8. The city’s management commissioned the original project to be reworked the year before last, and compared to the previous plan for 4.2 kilometers of tunnels, it now expects that 8.5 kilometers of sections will be deepened. It should measure a total of about 10.3 kilometers. Scheinherr said the municipality had asked for all the necessary decisions it would like to obtain by the middle of next year and then apply for a zoning decision.
The geotechnical survey will be carried out with the help of 92 boreholes at a depth of three to 68 meters and assessed the geological subsoil of the building as well as the groundwater status. The results of the survey will help designers to design statically correctly with the least possible impact on the environment, such as houses above tunnels.
During the further preparation of the construction, the city will follow up with a more detailed survey, which should be carried out by further exploration from the surface and also by excavation of three exploration galleries, as recommended by the explorers. Rout stated that the first of them should lead under the White Rock, the other in the route of the future Jarovský tunnel and the third in the part of the planned tunnel in Malešice. According to him, the excavation of galleries is necessary in complicated Prague conditions. “We need to see the massif, as they say, live,” he said.
He added that the city should start the work as soon as possible, although a more detailed survey will be needed only when preparing the documentation for the building permit. “It often happens that the deadlines for submitting reports by researchers and designers are very close, which, of course, does not allow the findings to be fully taken into account,Rout said.
The city or inner circle is built by the city from its own resources. It operates in the section from Pelc-Tyrolka through the Blanka tunnel towards Prague 6 and 5 and through the Strahov tunnel and Mrázovka to the Barrandov bridge and further along the South junction. In the east of the city it ends with the Štěrboholská radial. About half a million people live within the circuit. The first part of the circuit started operating in the 1980s, the last time the Blanka tunnel complex was opened in September 2015.
Visualization of the city ring road in the Horova náměstí area.
Author: Mestskyokruh.info