| 摘要 |
FIELD: medical engineering. ^ SUBSTANCE: method involves tunneling horizontal level working with heading machine on earth surface in the base of old salt spoil heap of salt mine. Steel arch support is used for strengthening the level working. The arches are mounted 1 m far from each other. Pit props and cappings of neighboring arches are connected with ties. Lagging of roof and sides of the working is carried out and dressed space is filled with rubble of lick salt pieces. Then, perforated tubes are laid in soil and covered with crushed salt. Halochamber air is saturated with salt particles by pumping air through the tubes to make sodium chloride concentration in the halochamber air be not less than 0.5 mg/m3. ^ EFFECT: reduced labor resource consumption. |
