EVALUATION OF LIMESTONE MINING ACTIVITIES IN PHYSICAL AND BIOLOGICAL ENVIRONMENTAL ASPECTS AND POST-MINING LAND DESIGN IN BEUMOPU LASIANA VILLAGE, KELAPA LIMA SUBDISTRICT, KUPANG CITY

Abstract

Kupang City has the potential limestone reserves amounting to 139,387,500 m3
in an area of about
1,032.5 ha, thickness of 15 m, overburden of 10%. The potential of limestone mining can attract the private
sector to process mining products to be produced into building materials, brick material and road network
materials. Mining and mining operations by entrepreneurs and miners have not followed good planning from the
preparation, implementation stage to post-mining land management, so the potential for damage to mining areas
is very high. Mining in Beumopu, Lasiana Subdistrict, Kelapa Lima District, is in the vicinity of settlements and
schools, which disrupts the environment and learning activities. This study aims to determine the physical and
biological environmental damage due to limestone mining activities and provide solutions in the form of postmining land management design. Research methods in the form of surveys, interviews, and desk study. The
results showed that limestone mining caused damage to the physical environment because it caused open land to
exceed 20%, namely in the first area 40.19%, the second area 36.50% the third area 23.31%. The first area noise
value is 57.89dB (A), the second area is 64.14dB (A) and the third area is 60.94dB (A). The highest important
value index in the second area was 47.6%, because it received the largest contribution from the value of
dominance and density. The level of damage to open land is 96.7%, including the category of heavily damaged
due to ≥40% so that mining activities need to stop mining operations and land restoration through terracing and
revegetation.
Keywords: limestone, biological physical environment, post-mining