ZHOU Li,ZENG Yao-huan,XU Wei-fa.A New Perspective on Manhole Cover Maintenance[J].China Water & Wastewater,2021,37(16 16):94-97.
A New Perspective on Manhole Cover Maintenance
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
16 16
Page:
94-97
Column:
Date of publication:
2021-08-17
- Keywords:
- manhole cover; maintenance; installation groove
- Abstract:
- A new perspective on manhole cover maintenance was presented. Taking the damage rate as the index, the key factor of installation groove was innovatively studied. It was found that the annual damage rate of manhole cover has dropped from 38% to 5% in the same situation when the installation groove width was reduced from 20 cm to 1 cm. Besides, the annual damage rate has decreased further from 5% to 2%, when the installation groove was 1 cm wide and 1 cm lower than the pavement. By reducing the width and height of the installation groove and avoiding direct contact between the weak link (installation groove) and the vehicle load in the manhole cover maintenance process, it can effectively avoid the uneven force of the installation groove, thereby improving the service life of the manhole cover and preventing the occurrence of repeated manhole cover pathological hazards.
Last Update:
2021-08-17