JAKARTA - The Regional Disaster Management Agency (BPBD) said that until now, land movements continue to occur at the location of the sinkhole phenomenon in Nagari Situjua Batua, Situjuah Limo Nagari District, Limapuluh Kota Regency, West Sumatra Province (Sumbar).
"Until now, land movement is still going on and this has been anticipated by installing a police line around the sinkhole," said the Commander of the BPBD Limapuluh Kota Alexandra Rapid Response Team in Limapuluh Kota Regency, Tuesday, quoted by Antara.
Alexandra said that officers had conducted initial data collection on sinkholes or suddenly hollowed ground in Nagari Situjua Batua, Situjuah Limo Nagari District. From the data collection, it was found that the hole had a length of 10 meters, a width of seven meters and a depth of 5.7 meters.
The installation of a police line around the sinkhole is intended to anticipate the worst possible scenario. The police along with the local government are concerned that the hole is getting bigger and can threaten the safety of residents.
"We continue to appeal to the public to maintain and comply with regulations, especially not to pass the police line around the holey land," he appealed.
Separately, expert in Geology and Geological Disaster Mitigation and Volcanology Ade Edward said that sinkhole or sudden hole in the ground phenomena often occur in limestone areas, such as in Nagari Situjuah Batua, Limapuluh Kota Regency.
Ade explained that Situjuah Village is a limestone area, but is covered by the eruptive material of Mount Sago, so it is not clearly visible. This fertile area is generally managed by the local community as farmland.
The nature of the limestone rock area is easily dissolved if exposed to rain water, then there are cracks that eventually create a large hole or also called the sinkhole phenomenon.
According to him, the local government or the community needs to close or bury the hole as soon as possible with soil, sand, stone materials until it is cast to prevent accidents.
"So, this is not a new phenomenon in Situjuah. Local people often call it the Sawah Luluih term," he said.
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