Safety Management

Quantitative landslide hazard assessment in New Jersey: an integrated field and laboratory approach In Reserve

Landslides in New Jersey occur in geologically weak regions with moderate to steep slopes, which has been a big concern for transportation safety. Typical landslides mapped by New Jersey Geological Survey include rock falls and rockslides. Rock falls, very common in roadway cuts and steep cliffs, refer to the abrupt movement of rock and boulders detached from slopes or cliffs. Rockslides indicate the movement of rock segments along bedding, joint, fault or other discontinuous interface. The proposed study focuses on the 3D mapping of cliff faces and modeling of rock movement hazard. Drone, also known as unmanned aerial vehicle (UAV), will be used to acquire 3D topographic information of rock and discontinuities, especially for areas that are difficult to access. Rock strength will be tested through laboratory experiments. The stability analyses of cliff faces will be made by applying finite element modeling (FEM). The integrate field surveying, laboratory testing, and FEM modeling will allow the identification of major rock fall hazards.

Idea Submitted by Cheng Zhu

List your Agency /Division / Bureau, County, City Univ. or Other Rowan University

Why is this a priority and what are the benefits for the State/County/City?

Existing practice to deal with rockfalls and rockslides remains passive. It is challenging to predict the rockfall and rockslide events due to the insufficient geological, geometrical and geomechanical information. The proposed idea will help quantify and assess the potential landslide hazard through an integrated field and laboratory investigation. It will provide a better guideline to the future reinforcement of potential failure zones and contribute to the safety of NJ roadways.

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Archive: 2018 Ideas
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Archive: 2018 Ideas
Idea No. 71