물폭탄 맞고도 스펀지처럼 '쫙'..서울 바닥 도배했는데 발칵 (에디터픽) / SBS

On rainy city streets, while rainwater pools on the asphalt, it does not pool on roads paved with paving blocks. This is where "permeable blocks" have been installed, designed to allow water to pass through. Numerous microscopic pores have been created inside the blocks to allow rainwater to drain away and flow into the soil. [Cho Si-hyung / Seoul City Permeable Block Manager: Permeable blocks absorb some of the rainwater and play a role in preventing urban flood damage.] Videos from permeable block manufacturers clearly show the difference between water-absorbing permeable blocks and ordinary paving blocks that do not. Do permeable blocks installed on actual streets drain water this well? The Seoul Institute selected 30 locations where the blocks had been installed for less than a year and conducted a field measurement survey. The method involved placing buckets on the permeable blocks, letting water flow through them, and then measuring the drainage. While 10 locations met the installation standard of absorbing at least 0.1 mm per second, 18 locations had an absorption rate of only 40% of the standard, and the remaining two locations did not drain water at all. This means that two-thirds were defective. [Park Dae-geun / Senior Research Fellow, Seoul Institute: The results showed that about two-thirds were clogged or most of them were clogged. In terms of recognizing the severity of the (performance investigation results)...] Previously, the Seoul Metropolitan Government enacted an ordinance in 2015 mandating the installation of permeable blocks to mitigate flood damage. The city explains that over time, foreign substances such as dust or dirt can enter and clog the holes in the permeable blocks. However, given that permeable blocks installed less than a year ago have been deemed defective in large numbers, there are calls to investigate whether substandard products were supplied. The Seoul Metropolitan Government has decided to expand the scope of the investigation to 1,000 locations for precise measurements. [Exclusive] Rainy Season Has Begun... 'Penetrating Blocks' Failing to Function Properly (2026.07.07 Morning Wide) (Reporting: Jang Se-man, Script: Lee Se-young, Video Reporting: Kim Young-hwan, Video Editing: Ahn Yeo-jin, Production: Digital News Department) #RainySeason #HeavyRain #Weather #Block #Sidewalk #PedestrianDeck #Penetrating #Delivery #Defective Copyright Ⓒ SBS. All rights reserved. Unauthorized reproduction, redistribution, and use for AI learning are prohibited.