原始標題
HS2: Large hole opens above rail tunnel near Little Missenden
新聞網址
https://www.bbc.com/news/uk-england-beds-bucks-herts-65590981
發表日期
推定為2023年5月15日
(剛才去看時，日期標示為「5 days ago」，故如此推定。)
全文完整內容
A large hole has opened up above a tunnel built for the HS2 high
speed rail line.
A spokesperson for HS2 Ltd said the opening in the ground near
Little Missenden, Buckinghamshire, was above part of the Chiltern
tunnel.
It said they were engaging with the landowner and had notified the
Environment Agency.
The spokesperson said investigations were ongoing but it was
likely linked to "pre-existing ground conditions".
Campaigners against HS2 said the hole, which they said measured
about 6m (20ft) in diameter and was 5m (16ft) deep, showed it was "
time to stop digging".
The 10-mile (16km) Chiltern tunnel is the longest on the HS2
project, which is designed to improve links between London, Birmingham
and the north of England.
HS2 Ltd said the site had been sealed off and "there is no risk to
the public".
Giant tunnelling machines have been excavating the high speed rail
project's route under the Chilterns in Buckinghamshire for the past 21
months.
The two tunnels, which are between the M25 and South Heath, have
five shafts for emergency access and/or ventilation near Chalfont St
Peter, Chalfont St Giles, Amersham, Little Missenden and Chesham Road.
They are part of first phase of the route between London and the
West Midlands, expected to begin operating between 2029 and 2033.
Eventually the route will link to Manchester, and potentially
beyond.
The project has faced criticism about the impact it would have on
the land the route would take, with campaigners fighting against plans
to build on woodland.
英國正在興建HS2高鐵，
第一期計畫是倫敦到西密德蘭、預計2029到2033年之間會通車啟用。
這次塌陷的地點是在白金漢郡Chiltern隧道工地上方地面，
HS2的發言人說，天坑附近已經封閉、對公眾沒有危險，
已經設法聯絡地主、也已經向環境署通報；
他也說，目前相關調查還在進行，
但事發原因似乎指向既有的地質問題。
反HS2人士說，那座天坑直徑約6公尺、深約5公尺，
這顯示「該停止挖掘了」。
這條隧道長約16公里、是整個HS2最長的隧道，
設有五座豎井供逃生及/或通風用，已經開工21個月。
心得感想
1.這是後續報導，剛才看到日期標示寫的是4天前。
https://www.bbc.com/news/uk-england-beds-bucks-herts-65596542
裡面提到事發時間是5/13星期六。
雖然HS2發言人說沒有危險，鄰近的Amersham市民還是很擔心。
市長說：
a/他認為天坑的直徑約6公尺，
且深度也至少6公尺、甚至可能深達10公尺。
b/由於這邊的地下含水層是他們的自來水源，
且附近也有罕見的白堊地質河谷，
這幾年來他們一直關注挖隧道對這些有何影響、
而這次塌陷事件更引起市民普遍注意。
c/很多市民會在這裡散步，
也有農民在這裡讓馬活動(原文是exercising horses)、
若塌陷時剛好有人，怎麼辦？
其他受訪市民也提到那邊是附近居民休閒要地、假日人潮也很多，
也有的擔心會不會又塌，更有人抱怨HS2講得不夠清楚。
2.我4、5天前在BBC News英文版臉書粉專看到時就要貼這篇，但是沒有空；
我剛才也看了板上這5天都沒人貼，所以現在貼。
3.希望一切平安。