Janské Lázně has managed to stabilize the Janský spring and preserve the operation of the Large pool in its original historical form. Since January, clients and patients of the State Medical Spa have been enjoying a bath in 28 degrees Celsius of warm mineral water for treatment and relaxation.
"We opened the large swimming pool after almost three years, when it was impossible to use it due to low water levels and water leaking into the subsoil." I am pleased to be able to report this positive news: Janské Lázně now has "There is enough thermal water to provide all the necessary procedures, and our clients here are always assured of undergoing hydrotherapy in naturally high-quality mineral water, which is produced in the deep underground fissures of the Krkonoše Mountains and springs from a depth of several tens of meters in a collection well," said the director of the spa, Martin Voženílek.
The three-quarters-of-a-year reconstruction of the Janské Vrt (Janské Vrt), a natural healing source from which Janské Lázně draws its warm mineral water, aimed to improve the natural filling of the Great Pool. Historically, it functions as a "piscina" (swimming pool), with the water level maintained by the natural pressure of the thermal aquifer in the subsoil. "The underground structure of the Janský well corresponded to the time of its construction in 1956 and its condition required stabilization intervention. The reconstruction of the pool was primarily required for its waterproofing. Climate change completely changed the conditions on the ascending paths of the thermal bath and the entire wide area of the Krkonoše Mountains, and the "piscina" thus became technically unsustainable after the drop in the bottom water level," explained Petr Janovec, the manager of the technical department of Janské Lázně.
At the same time, he explained what the stabilization of the Janský spring, which began last summer, consisted of: "We sealed the original steel casing of the well (15 m) by inserting a new plastic casing and sealed the resulting annulus. This means that water from the well can no longer leak into the subsoil of the building,” said Petr Janovec. He added that after the modifications, the pool walls are now equipped with a high-quality pool foil, thanks to which the thermal water is maintained at the necessary level for swimming. Clients now have the opportunity to undergo a therapeutic swimming procedure in the historically valuable interior of the Large Pool in clean, untreated thermal water directly from the therapeutic Janský spring with a temperature of 28 degrees Celsius. "The water is fed into the pool through a stone vase connected to the discharge of a well equipped with a pump. This distribution of thermal water ensures the stability of its quality and the preservation of all the favorable parameters of its natural elements, especially sodium and calcium with trace elements of gold.
Mineral water is currently pumped in sufficient quantities into all other spa pools, whirlpools and hydrotherapy baths, including the pool at the Vesna Children's Sanatorium.
A special monitoring program was also expanded, which monitors everything important about the thermal structure of the borehole and the subsequent distribution of thermal water, and which automatically saves the acquired data. All work was carried out as the general contractor by the specialist company Vodní zdroje Chrudim sro, which won the tender.
The stabilization of the natural healing resource cost Janské Lázně 750 thousand crowns. Of this, the spa paid 250 thousand crowns for the survey and the costs of remediation and monitoring work amounted to 500 thousand crowns (prices are quoted excluding VAT).
