On September 10, 2019, KCAP + FELIXX won the international competition for the resilient revitalization of the coastline of Dapeng, a green peninsula in the bay between Hong Kong and Shenzhen. Both firms are Netherlands-based.
The 130-kilometer stretch of coast was severely damaged by the Mangkhut typhoon in September of 2018. Typhoon Mangkhut damaged the infrastructure of the peninsula to various degrees.
An international competition was launched to develop a plan to restore the coastline and boost resilience to the more-frequent occurrence of extreme weather events.
The winner, KCAP+FELIXX, developed a “Triple dike strategy”, a multifaceted dike system that allows for an integrated approach towards the climate adaptive reorganization of the shore. Water safety strategies are connected to eco-development and nature restoration. This creates a resilient framework for social and economic growth.
For 32 kilometers of coastline, KCAP + FELIXX subdivided their redevelopment strategy into 6 strategic implementation projects. Construction starts this year, and is expected to be completed in 2021.
TRIPLE DIKE
The triple dike moves away from a generic protection wall along the coast, towards the creation of three development zones, carefully embedded in current conditions and responding to the specific future needs of every single area.
The 1st “outer” dike zone increases the resiliency through wave attenuation, erosion reduction and the enhancement of sedimentation.
The 2nd “middle” dike is an elevated embankment, to stop the storm surge and the water pushed up by the waves.
It’s not a big wall, but a multifunctional zone: an exciting hilly park, an elevated waterfront with urban promenades, a tidal park or even a public building.
The 3rd “inner” dike is a hybrid structure which man¬ages the rainwater following the principle of a sponge city. All runoff from adjacent villages and mountains is buffered, delayed and temporarily stored in rain-parks, raingardens, wet forests, wetlands and green streets.
A PRODUCTIVE RESILIENCE STRATEGY
Dapeng is a mountainous peninsula with lush forests, intersected by riverbeds and creeks, connected to the sea with fantastic sand beaches and impressive rockeries. It offers an extraordinary lush and green environment in the direct proximity of Hongkong and Shenzhen.
Along the shore, several small villages originate from fishing communities. Dapeng’s cultural resources and natural settings have fostered the development of tourism, within a vast expending metropolitan area with about 20 million inhabitants.
The application of the triple-dike provides a framework to enhance these existing qualities while unlocking potentials for growth.
The small-scale identity of the villages is protected by locating new developments within the existing boundaries. Each village’s specific character is strengthened to amplify the rich variation of recreational facilities.
To minimize the infrastructure’s revitalizing impact on the island, connectivity to the water is enhanced. An interconnected mountain and marine landscape also helps restore the ecological functions of the peninsula.
All renderings courtesy of KCAP + FELIXX.