Systematic method for radon shielding construction of underground engineering

The invention discloses a systematic method for radon shielding construction of underground engineering. The systematic method comprises the steps of surveying, diagnosing, testing, constructing, checking and accepting and maintaining. The internal size and the original radon exhalation rate of the underground engineering and the background radon concentration of the external environment are measured through on-site investigation; the target radon concentration of the underground engineering is set, and the target radon exhalation rate is estimated; calculating a radon shielding efficiency target value of the radon-proof layer, and determining a construction scheme; carrying out experimental construction on the wall of the local area of the underground engineering according to the construction scheme; performing comprehensive construction according to the construction scheme; performing radon shielding effect overall verification on the underground engineering, and if the overall verification is not qualified