求翻译：隧道洞身穿越的板岩及炭质板岩区，占全隧的46.53%，该岩石遇水易崩解软化，围岩稳定性极差，且炭质板岩区可能有瓦斯外溢是什么意思？

Tunnel and body through the slate and carbonaceous slate area, accounting for 46.53% of the tunnel, the rock in contact with water, easy disintegration softening of surrounding rock stability poor, and carbonaceous slate gas spill

tunnels through the hole in the rocks and charcoal quality slate, accounted for 46.53 % of the tunnel, and the rock water softening, and easy-to-rifts of rock stability is extremely poor, and charcoal quality slate may have gas spills

The tunnel hole wears the more slate and the charcoal slate area, occupies entire subterranean 46.53%, this rock meets the water easily to break up softens, the adjacent formation stability misses extremely, also the charcoal slate area possibly has the gas overflow

Tunnel crossing of carbonaceous slate and slate districts, 46.53% per cent of total tunnel, the rock disintegration softened water, poor stability of surrounding rock and carbonaceous slate may be a gas spill

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