Month: May 2021

Impact of Different Factors on Hyporheic Exchange in a Meandering Pool-riffle Stream

The hyporheic zone (HZ) is the region of saturated sediment surrounding a stream which connects surface water and groundwater flow. The overlying water with dissolved matters infiltrates into the HZ, stays there for some time and interacts with groundwater, and exfiltrates out of the HZ, resulting in hyporheic exchanges (HE).

Most of the rivers are designed with narrow bottom section and large upper section of concrete streambed which results in bad river eco-system. In recent decades, more and more stream restoration projects involve the recovery of HE, however, effective guidance in restoring HE is still missing. Therefore, this study aims to examine the effectiveness of different key factors (e.g., stream discharge, slope, sinuosity and groundwater flow) in restoring HZ in a meandering channel with floodplain using flume experiments and numerical simulations.

Fire Evacuation Assistance Robot

How occupants can evacuate during emergency in High-Rise building has raised different engineer’s concern since last century. The aim of this project is to develop an autonomous robot that assists the emergency evacuation of the disability and injuries in the Temporary Refuge Space and Refuge Floor. The immediate assistance is a combination of urgent medicine delivery, remotely monitor of patient’s status (from face expression judge the urgency) and task assignment from the building management office. The robot is designed to work with other smart cities system like SCADA and Building Management System (BMS) under Artificial Intelligence & Internet of Things Internet Of Thing (AIoT) network, so that the building management can access, monitor, and control the robot from anywhere in the world.