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Coal India's SECL said on Friday that it has signed an agreement of Rs 7,040 crore with TMC Mineral Resources to use paste filling technology in coal production. Paste filling is a new underground mining technique that does not require purchasing surface land. After extracting coal, the empty space is filled with a paste made of fly ash, crushed soil from open mines, cement, water and special chemicals. This method prevents the land from collapsing and keeps the mine strong.
SECL said, "We are going to be the first coal PSU in India to adopt paste filling technology for coal mining. We have signed an agreement of Rs 7,040 crore with TMC Mineral Resources for this new technology." 84 lakh tonnes of coal will be produced in 25 years Under this agreement, coal will be extracted from the Singhali underground mine in Korba area using paste filling technology. About 84 lakh tonnes of coal is expected to be produced from this project in 25 years. Singhali mine was approved for annual production of 2.4 lakh tonnes in 1989 and work started in 1993. Currently, 84.5 lakh tonnes of non-coking coal can be extracted from the mine. It was built using the Bord and Pillar method, using load haul dumpers and drilling machines. But, the area above the mine is densely populated, with villages, high-voltage power lines and roads. This makes traditional mining methods unsafe and harmful to the environment. With the paste filling technique, mining in this area will now be possible without damaging the surface structures. The success of this technique in Sinhalese can pave the way for resumption of mining in other underground mines where there are similar ground problems.
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