The 36-year-old victim sustained fractures on her hand and leg.
KR cited the inordinate delays of trains running on the route owing to speed restrictions as the reason for this decision.
Protests were held across Tamil Nadu with raising of slogans-- "Vendum Vendum Kudineer Vendum" (we want water) and "Edappadi Arasai Kandikirom" (we condemn chief minister Edappadi K Palaniswamy's government).
Scorching heat and delayed monsoon have crippled Chennai and other parts of Tamil Nadu with an acute water crisis.
Polling to elect representatives to the 140-member Kerala assembly, 232-member Tamil Nadu assembly and the 30-member Puducherry territorial assembly began at 7 am on Monday.