---
title: Blackheath Tunnel Ground Stabilisation & Waterproofing | Geobear UK
description: Discover how geopolymer injection reduced water ingress in the historic Blackheath Tunnel, improving reliability on a key UK rail route.
---

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# [Blackheath Tunnel Ground Stabilisation & Waterproofing | Geobear UK](https://www.geobear.com/en-gb/infrastructure/references/blackheath-tunnel-ground-stabilisation-and-waterproofing)

 Written by [Richard Holmes](https://www.geobear.com/en-gb/infrastructure/references/author/richard-holmes) | Mar 4, 2026 10:48:43 AM

[View full post](https://www.geobear.com/en-gb/infrastructure/references/blackheath-tunnel-ground-stabilisation-and-waterproofing)

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