April 10, 2013. Two dozen tenants of private houses in the Nizhny Novgorod region was evacuated due to a funnel with a diameter of 40 meters and a depth of 14 meters, which was formed in the neighborhood on Wednesday night, according to the regional central board MOE.
"At 02:00 MSK April 10 at Nizhny Novgorod area, Buturlino town, street railway, the house 26a, subsidence has occurred, resulting in a crater with a diameter of 40 meters, a depth of 14 meters. Of the next 20 private residences to evacuate 50 residents, "- said in a statement.
The diameter of the hole in the village of Nizhny Novgorod has doubled, went into the ground 3 buildings
April 10, 2013. The diameter of the funnel in the village Buturlino Nizhny Novgorod region has increased from 40 to 85 meters, it slipped three buildings, told RIA Novosti press service chief of the regional GUMCHS Svetlana Petrova.
"The diameter of failure increased to 85 meters, there slipped three buildings: residential home, giving and grain warehouse, which is now not in use, "- she said.
The depth of the failure is unknown, the previously reported 14 meters.
A total of 33 people were evacuated from nearby houses. They were placed in a local school. Place the failure cordoned off and sits Buturlinsky Commission for Emergency Situations.
Geologist told about the nature of the funnel in the village of Nizhny Novgorod
April 10, 2013. A large crater in the village Buturlino Nizhny Novgorod region, which failed three buildings are likely to have the karst nature, RIA Novosti said the first deputy general director of "Hydrospecgeology" Honored Geologist of Russia Mark Glinski.
"Most likely, this is a karstic phenomenon. I would not call it a normal phenomenon, but such meets. For example, in Moscow in 1977 in front of CHP-16 was formed funnel and it slipped two multi-storey buildings, "- he said.
According to the scientist, after this case was created zoning map of Moscow on karst hazard.
"North-west of the capital on a dangerous Karst, and depending on the risk of certain foundations must be built," — he said.
In a hole with a diameter of 85 meters, formed on Wednesday night in the village Buturlino the Nizhny Novgorod region, failed uninhabited house, cottage and an unused grain warehouse. Of the nearest residential houses within a radius of 100 meters from the failure evacuated 33 people. There are no victims.
Funnel in the Nizhny Novgorod settlement may increase, say experts
April 10, 2013. Experts do not rule out that funnel Buturlino in the village of Nizhny Novgorod region, which failed three houses will increase, according to the regional UMCHS Wednesday.
In a hole with a diameter of 85 meters, formed on Wednesday night in the village Buturlino Nizhny Novgorod Region, failed three structures — a house, cottage and an unused grain warehouse. Were evacuated 33 people, including eight children.
"According to the preliminary conclusion of experts" Protivokarstovaya and coastal protection ", the cause of failure was the karst collapse of the roof of the karst band located, approximately, at a depth of 50-60 meters from the surface of the earth," — said in a statement.
Karst holes — it collapses the upper layer of the earth into underground cavities, formed by the action of groundwater.
The governor of the Nizhny Novgorod region Valery Shantsev said that the issue could be caused by the rise of ground water due to flooding.
"There is a theory that the failure was caused by ground water that rose with the flood. If so, this is another very strong argument against the change in the level of Cheboksary reservoir. The rise of up to 68 minutes will trigger an increase in the level of this kind of phenomena, "- said the governor.
However, RusHydro assured that the Cheboksary reservoir level rise will not lead to new failures of soil in the Nizhny Novgorod region.
The situation on the spot and help
The decision of the Emergency Commission Buturlinsky area residents affected houses allocated 60,000 rubles material aid — 10,000 owners of holiday homes, 20,000 rubles — people living at home, and 10 thousand inhabitants of the three houses that are in the zone of potential expansion of the funnel.
At a distance of 90-100 meters from the edge of the crater takes stage SMAGIN-Kamenischi GR. However failure almost no impact on the operation of the railway: the movement of trains shall not be suspended, but the speed in this area is reduced to 40 kilometers per hour.
At a meeting of staff on emergency decision to enter into the settlement Buturlino state of emergency. At the site of the failure are specialists protivokarstovoy and coastal protection.
The rise of the Cheboksary hydroelectric power station, which is JSC "RusHydro" charted in 2020, will increase the water pressure at the station and thereby terminate its full capacity of 1.4 thousand MW in the year (to date the highest possible capacity — 800 MW). The area of land flooding will get the Nizhny Novgorod region, Mari El and Chuvashia.
At the last in September 2012 hearing of the Public Chamber of the Russian Federation government representatives of the Nizhny Novgorod region and the Republic of Mari El voted against raising the level of the Cheboksary hydroelectric power station, while the Chuvash supported the project.
Commissioning of the first hydro Cheboksary HPP was implemented with a reduced level of Cheboksary reservoir (61 meter) In 1980. In order to navigate in the spring of 1981 the level was raised to an intermediate level of 63 meters. The deadline for work on the flood zone of the reservoir to the design level of 68 meters has been planned for 1987. However, due to lack of funding and work in progress for the protection of lands and settlements, the project was suspended.