FOCUS on the Scene ‖Under the Ruins

Liuxi Industrial Park Landslide Hits on 3:40 in the early morning of 23rdDec. Two Survivals Are Found. Rescue Work Has Begun.
We are too devastated to ask whether it is a natural or man-caused disaster. We keep asking ourselves: is such a tragedy avoidable or what methods we should use for restoration. Human activities can directly cause landslide via cutting slopes and overloading, while landslides can also be indirectly induced by extreme abnormal rainfall caused by global climate change due to industrialization. Population density has become a key factor in controlling the distribution of the global disastrous landslides.
In the world history the disastrous landslides induced by engineering activities are abundant. Deaths caused by landslides mostly concentrate in Asia, esp. the Himalayans and China. Since the 20th century, about 50% of the disastrous landslides are directly caused by engineering activities, with such contributing factors as mining, hydraulic and hydro-power engineering, and linear infrastructure. Daban County Landslide Induced by Urban Construction.

Other well-known disastrous engineering-induced landslides in the other regions of the world include the landslide in Frank Mine of Canada, tailing dam landslide of El Cobre of Chile, dam landslide in Los Angeles of the United States, Mameyes urban landslide in Puerto Rico, Sedlitz mine landslide in East Germany, Vaiont reservoir landslide in Italy, Stava tailing impoundment landslide, and Surte urban landslide in Switzerland, and Abbotsford urban landslide in New Zealand, and Cairo urban landslide in Egypt.

Successful Case of Transformation and Renovation of the Landfill.

The United States: Fresh Kills Park
At present, Fresh Kills has been designed as a garden island. The general design framework includes a world-level large-scale garden, restoration of the ecological and sustainable landscape, and building space for urban activities, commemorating the 911 tragedy, and restorative transformation of the site, and building an ecology-friendly road system to optimize local transportation and so on. By 2011, the 6 garbage hills have been dealt with through closure technology for promoting surface drainage, stopping erosion, isolating the waste layer, and stopping the emission of waste gas and so on. In the meanwhile, there is a strict system to deal with and collect the landfill waste gas and leachate. As the waste decomposition and sedimentation in the landfill require about 30 years, the construction of the garden will be carried out in 3 stages in 30 years.

orea: Human Intervention Accelerates the Restoration of the Ecological System
In 2002, right before the Japan-Korea World Cup, Seoul of Korea initiated a series of garden building projects, among which the largest is the transformation of the Lanchih landfill.
During 1978 to 1993, Lanchih suffered severe contamination as it was the landfill of Seoul. The goal of this transformation project is to allow the garbage to decompose under the natural state and accelerate the restoration of the ecological system through human intervention, and on this basis, build a World-Cup Park made up of five gardens. Sunset Garden used to be the first landfill of Lanchih, and on this basis, it was planned to build a golf course with ecological effects. During the transformation, the project team injected fertilizing microbes in the soil, and then selected drought-enduring grass seeds to reduce maintenance and irrigation. Outside the golf course, an ecological observation district and wild plants district are also built.

Singapore: Man-made Seawall Enclosure of the Landfill
In 1999, Singapore initiated Pulau Semakau landfill. 90% of the garbage of the country was dumped here. This landfill cost 360 million US dollars. It was made up of Pulau Semakau, Sikkim Island, and a man-made seawall. The seawall lasted about 4.4 miles, enclosing the nearly sea area into a giant landfill. The seawall was built with grits, rocks and mud, and paved with PE geo-membrane to prevent the hazardous materials from permeating into the sea water. The ashes of the burnt garbage will be transported here, and paved with mud, planted with palm trees or other plants. Pulau Semakau is inhabited by over 700 animals and plants, including many rare species, such as herons and Kentish Plover, and the endangered Chinese white dolphins also are often seen in the nearby sea. Around the island two mangrove woods were planted, which can not only protect the wild animals and plants, but also act as a warning sign as to the environmental quality. If the leaves fall or turn yellow, it means that the nearly water quality may have changed, possibly the sea water has been contaminated. At this time, professional management organization will conduct further investigations and take efforts to restore it.
Let’s Pray for Shenzhen
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