tunnel disease meaning in English

【医学】坑道病，潜涵病。

But the base of tunnel is not regarded in tunnel design , which cause tunnel disease
我国铁路隧道设计中普遍存在“重拱轻底”的思想，由于基底结构薄弱而引起的隧道病害问题严重。
The site investigation has shown that operating tunnel disease is serious , even dangerous to operation
现场调查表明，铁路运营隧道病害严重，有的危及行车安全，其健康状况不容乐观。
It shows that the k near the channel of tunnel ' s base is lower , and most tunnel diseases arise here , which is in agreement with the survey result
计算结果表明，标准图方案在隧道底部水沟附近结构安全系数偏小，是隧道病害的多发部位，这与实际的观测结果也比较符合。