The UK's International Emergency Trauma Register was set up by medical charity UK Med.
Professor Tony Redmond of UK Med said:
"The register is a major step forwards in harnessing the skills and goodwill of UK healthcare workers and bringing them to the immediate benefit of those most in need.
"Although not its primary purpose, the experience gained in both training and deployment overseas can only reinforce our response to disasters here at home."
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Transport Secretary Chris Grayling believes Network Rail should share the responsibility with private train operating companies.
Two vehicles were swallowed up by the sinkhole on Sunday night, killing Dora Linda Nishihara and injuring one man.
Elliott Livingstone, aged three, spent most of his life in hospital before the operation in April.