2 months ago
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About a period aft enactment connected the Srisailam Left Bank Canal (SLBC) passageway resumed from the outlet side, the enactment connected the passageway excavation from the inlet broadside besides resumed connected Friday (March 20), arsenic portion of the government's plans to fast-track the work, Minister for Irrigation and Civil Supplies N. Uttam Kumar Reddy announced.
Work connected the passageway from outlet (Devarakonda) broadside was resumed successful the 3rd week of February, and from the inlet (Domalapenta adjacent Srisailam dam) broadside was resumed connected Friday. “The authorities aims to implicit the world’s longest passageway excavated without immoderate intermediate entree shafts,” the Minister said. The passageway runs for 43.93 km betwixt Srisailam and Dindi reservoirs, arsenic per the design.
Another passageway linking the Dindi reservoir to the main canal of the Alimineti Madhava Reddy Project (AMRP) runs for 7.13 km to implicit the passageway project.
The Minister chaired a high-level reappraisal gathering to measure the advancement of the SLBC tunnel, the Dindi Lift Irrigation Scheme and the Achampet subdivision canal. Stating that the authorities was giving apical precedence to workers’ information pursuing the mishap of 2025 February owed to passageway extortion illness astatine astir 14 km wrong the rima of inlet, the Minister insisted connected ensuring due ventilation close up to the past constituent of the passageway face, on with continuous monitoring and deployment of each indispensable safeguards.
The February 22 incidental of past twelvemonth had buried live 8 workers, technicians and engineers and lone 2 bodies were retrieved aft implicit a month-long workout involving respective nationalist and State-level agencies.
The resumption of passageway enactment from the inlet broadside comes aft preparations including a 20-metre unfastened chopped and deployment of further information installations. The advancement made from the outlet truthful acold is astir 50 meters arsenic the passageway traverses challenging quartzitic and granitic formations crossing 15 nalas, 4 of which being perennial streams.
To amended recognize subsurface risks, a helicopter-borne VTEM Plus Magnetic Geophysical Survey (Heli-borne AEM) was conducted implicit much than 200 km of the alignment by experts from the National Geophysical Research Institute (NGRI). The survey’s data, penetrating 800-1000 metres deep, helped place shear zones, h2o bodies and different hazards for tailored excavation strategies, Mr. Uttam Reddy explained.
