PURPOSE: A manufacturing method of a water proof coating agent for a submarine tunnel and a deep tunnel is provided to be able to manufacture a water proof coating agent capable of purifying the air inside the tunnel while permanently producing the weak current of 0.06 mA which is useful to the human body.CONSTITUTION: A manufacturing method of a water proof coating agent releasing anions for a submarine tunnel and a deep tunnel in 40-60 m down in underground comprises a step of mixing monazite, which is a rare earth noble metal, with red clay, and reacting the mixture with a coagulant. The coagulant is selected from ethylene vinyl acetate, polyvinyl acetate, solvent-free epoxy and latex. The manufactured water proof coating agent is able to release a large amount of anions when applied on the inner wall and/or the ceiling of the tunnel with a spray coating method.COPYRIGHT KIPO 2013해저 터널 및 지하 40m ∼ 60m 심층 터널 내부의 공기를 정화, 청정화 하는 방법에 있어서 전하 광물질의 (-)음이온의 발생수치를 인체에 가장 유익한 800개 ∼ 1,000개/1㎤로 만들기 위하여 희토류계 희귀금속인 모나자이트를 첨가하여 점도 760 cps로 조절된 E.V.A(에칠렌 비닐 아세데이트) 용액을 코팅 방수제로 제조하는 방법
