Tunnel sealing is the process of isolating or closing off sections of underground tunnels to maintain safety, enable repair, or for long-term ab...

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Tunnel sealing is the process of isolating or closing off sections of underground tunnels to maintain safety, enable repair, or for long-term ab...
Tunnel sealing is the process of isolating or closing off sections of underground tunnels to maintain safety, enable repair, or for long-term abandonment. Whether dealing with an aged mine shaft, a utility tunnel which needs to be maintained, or an emergency involving water incursion or dangerous materials, sealing is crucial in maintaining control over the environment below ground.



https://www.petersenproducts.com/articles/tunnel-sealing-how-to-seal-off-tunnels-for-emergency-or-long-term-closure.html

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