SUBSIDENCE STUDY FOR KOLIHAN COPPER MINE AT KHETRI COPPER COMPLEX, RAJASTHAN
Dheeraj Kumar · 2014
Subsidence impacts occur at every underground mining operation bringing about changes to surface landforms, ground water and surface water. Although the same impacts to mining operations, man‐made surface structures and other features are relatively well known and studied, the environmental impacts related to subsidence at underground mines are not well known and have not been extensively described. The Subsidence monitoring work at Kolihan Copper Mine, Khetri Copper Complex, Rajasthan was awarded to ISM vide the LOI no. HCL/HO/KCC/SS/2013 dated 07.08.2013 and WO no. HCL/HO/KCC/SS/2013 dated 20.09.13 for a period of 2 years and one month w.e.f. 07.08.2013. In the 20th Meeting of the Reconstituted Expert Appraisal Committee for Environmental Appraisal of Mining Projects (Non‐Coal) of the Ministry of Environment and Forests during May 28‐30, 2014, periodically monitoring of ground movement at Kolihan Copper mine systematically as carried out by ISM Dhanbad through establishing subsidence pillars was noted by the committee based on the interim report submitted by ISM. It was desired to submit the Final report. The final report depicting the result of two Quarters (Year 1: Q1 & Q2 at an interval of 3 months each) subsidence monitoring as carried by ISM as per the scope of the subsidence study was submitted to HCL in July 2014