International Experts Team Observation of Polavaram Project: పోలవరం ప్రధాన డ్యాం ప్రాంతంలో సీపేజి ఎత్తిపోయాల్సిందేనని అంతర్జాతీయ నిపుణుల బృందం స్పష్టంచేసింది. కొంత గ్రావిటీ ద్వారా, మిగిలింది ఎత్తిపోయాలని సూచించింది. దానికి కార్యాచరణ రూపొందించుకోవాలని తెలిపింది. డ్యాంల భద్రత, నిర్మాణం, జియో టెక్నికల్‌ అంశాల్లో విశేష అనుభవం ఉన్న డేవిడ్‌ బి.పాల్, రిచర్డ్‌ డోన్నెల్లీ, గియాస్‌ ఫ్రాంక్‌ డి సిస్కో, సీస్‌ హించ్‌బెర్గర్‌ అందరూ కలిసి చర్చించుకుని, కొంత అధ్యయనం చేసి తమ ప్రాథమిక నివేదికను అందించారు. డయాఫ్రం వాల్‌పై నిర్ణయాన్ని తుది నివేదికలోనే వెల్లడించనుంది. సీడబ్ల్యూసీ ఛైర్మన్‌ ఈ నివేదికను రాష్ట్ర జలవనరులశాఖ అధికారులకు పంపి ఎలా ముందుకు వెళ్లనున్నారో, ఆ ప్యానెల్‌ సూచించిన పరీక్షలను ఎలా చేపడతారో తెలియజేయాలని కోరారు.
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00:00The Polavaram Project has decided that it is impossible to completely stop the seepage in the Pradhana Dam area.
00:08To do work in the Pradhana Dam area, it has decided to send some of the water out through gravity.
00:14It has decided that the only way is to remove the remaining water through pumps.
00:18To do work in the Pradhana Dam area, it has decided that the seepage water should be allowed only to a depth of 17 meters.
00:28To do work in the Pradhana Dam area, it has decided to send some of the water out through gravity.
00:32It has given clarity on some of the indicators.
00:35To determine whether the seepage is happening from this dam or not, it has suggested to conduct many more tests.
00:43It has also explained how to drill boreholes and how to conduct tests.
00:49It has also suggested to test whether seepage is present or not by placing a few holes in the junction and some clay cores.
00:58It has also suggested to place fissometers in some places to identify seepage.
01:04It has also suggested to test whether seepage is present or not by placing a few holes in the junction and some clay cores.
01:09If seepage is found to be present from these structures, treatment methods will be provided accordingly.
01:15It has also suggested to send these tests to foreign companies.
01:18The dam area has been affected by heavy rains in 2020.
01:23The land and the environment have changed.
01:25To build the dam, it has decided to fill the boreholes with sand and increase the density.
01:32There are difficulties in increasing the sand density in some places.
01:37To treat the sand up to 20 meters deep, it has suggested to conduct multichannel analysis of seismic rays in those areas.
01:50To increase the sand density in those areas, it has suggested whether the land and the environment have changed or not.
02:00If the sand density does not increase, it can be densified in some places.
02:05It has suggested to build the dam in those areas.
02:09In the Polavaram project, the guide bond was broken in Gatham.
02:12Due to the work carried out in two different seasons, the sand and clay cores have reached the stone columns and the dam has been built.
02:20In the same period, work has been done on the construction of Gap 1 Pradhana Dam.
02:24Some of those works have been carried out.
02:25In this case, in Gap 1 Pradhana Dam, it has suggested to conduct tests to determine the strength of the construction in the stone columns.
02:32It has suggested to drill holes in the stone columns and send water.
02:36In this way, it has suggested to conduct permeability tests.
02:39It has suggested to determine the strength of the stone columns and send water.
02:44After conducting these tests, it has suggested to send the results to Nipuniluprundan.
02:48In the area where the Pradhana Dam is being built, there are some sand dunes.
02:52Due to the floods here, new sand dunes are formed from time to time.
02:55In that area, it has suggested to excavate the sand dunes.
02:59It has suggested to conduct tests to determine whether there are sand dunes between the sand dunes.
03:05Along with the work of Pradhana Rathi Mud Dam, their opinions about the diaphragm are valid in Tudhini Vedika.
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