Determination of Tolerance Limits for Mining of Sedimentation Processed Sirtu Material Using the Cross-Section Method in the Panteu Bahagian Hulu River, Tangse District, Pidie District, Aceh Province, Indonesia
Determination of Tolerance Limits for Mining of Sedimentation Processed Sirtu Material Using the Cross-Section Method in the Panteu Bahagian Hulu River, Tangse District, Pidie District, Aceh Province, Indonesia

Summary/Abstract: The growth and development of increasingly advanced development have significantly impacted the need for raw materials for sand and stone. To control the utilisation of natural resources and maintain environmental balance, especially in river areas, assessing the tolerance limit for mining sand and stone or sirtu materials is necessary. The method used in this study was a cross-section carried out using Autocad software, bearing in mind that many disasters result from changes in river morphology due to erosion in the upper reaches and their activities. This study aims to determine the amount of deposition volume so that thresholds or tolerances for sirtu mining can be determined which are environmentally friendly and minimise the impact on rivers, which causes further damage. The area calculated in this study is 7 ha hectares. Calculation of the results of the tabulation of calculations with the crosssection method at the study site as many as 19 cross-section incisions with incision intervals of 25-50 meters. This effort is a form of environmental assessment management related to the tolerance limits of the volume of sand and stone or sirtu mining. The calculations found that the mining tolerance limit for sand and rock sedimentation (sirtu) in the study area was 149,989 m3 . These data indicate that the accumulated sedimentation rate is high in the part of the river that is the location of this study. Thus, if the use of natural resources in the form of sand and stone at that location exceeds the tolerance limit from the results of this calculation, it is estimated that it will impact environmental damage and disrupt river conditions in the area.

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