On Tuesday, the stabilization of the ground in the area of the Gaj housing estate in Trzebinia (Małopolskie Voivodeship) began. According to the representatives of Spółka Restrukturownictwa Kopalń, treatment of the area at risk of sinkholes consists in pumping a mixture of cement and ashes through six boreholes. The ground has collapsed many times in the area before, raising safety concerns among residents.
In the area of the Gaj housing estate in Trzebinia, the pumping of the stabilizing substance began on Tuesday before 11 am. A company that treats an area at risk of sinkholes injects a mixture of cement and ashes through six boreholes. Thus, voids and loosening of the ground will be filled, which is to prevent the formation of further holes.
Read also: The ground in the allotment gardens in Trzebinia collapsed again. “The area is padlocked”
Ground stabilization at the Gaj estate in TrzebiniaMine Restructuring Company
Ground stabilization in Trzebinia
In Trzebinia, the ground collapses even several times a week. In mid-February, scientists based on research selected 11 points at risk of subsidence in Trzebinia. Among the areas most at risk and requiring immediate intervention are: the parish cemetery, allotment gardens, the stadium, ul. mining.
Ground stabilization at the Gaj estate in TrzebiniaMine Restructuring Company
Among other things, the areas of the Gaj housing estate are at risk. The last time the ground collapsed in this place was February 23, right next to apartment blocks.
Read also: Because of the collapsing ground, they want to take the football field away from the players
Simultaneously with the stabilization of the ground, Mariusz Tomalik, spokesman for Spółka Restrukturownictwa Kopalń (SRK), informed that drilling works are being continued. The ultimate goal of the project is to make 10 holes in the vicinity of the Gaj housing estate, near garages and forest areas.
– Works in Trzebinia are a process. According to the contract between SRK and the contractors, concluded in January, they should be completed in the middle of this year – said Tomalik.
Ground stabilization at the Gaj estate in TrzebiniaMine Restructuring Company
Zadliska in Trzebinia
Earth sinkholes in Trzebinia have been occurring for years, but they intensified last year. The situation became famous in autumn, when at the parish cemetery the hole absorbed about 40 graves. The area of the necropolis is closed, only people carrying out security works are allowed there. The same applies to allotment gardens – these have also been closed due to the increasingly frequent cases of subsidence. The last time the ground collapsed there was March 2. Earlier, one of the holes was in the gardens under the farm building.
Ground stabilization at the Gaj estate in TrzebiniaMine Restructuring Company
The problem of the formation of sinkholes is related to the shallow mining operations carried out in this area years ago and the rising level of underground waters. In a month, it rises on average by half a meter. In some places it is 12 meters below the surface.
The post-mining damage is caused by the former “Siersza” hard coal mine operating in this town since the mid-nineteenth century. In the years 1999-2001 the mine closed down. At the beginning, the exploitation was shallow, at a depth of 20-25 meters. Then the underground passages went lower and lower. The liquidators assumed that the voids left after exploitation would be filled with water. Over time, the water began to come closer and closer to the surface of the earth.
Main photo source: Mine Restructuring Company