| 摘要 |
<p>The duct, designed to be laid in a trench, is made from assembled rings (2) of used tire side walls (1B, 1C) that are stacked together side by side inside the tread (1A) of a tire (1) with one side wall removed. The tires are all of the same type, are cut to the same size and have side walls facing the same way. The duct, designed to be laid in a trench, is made from assembled rings (2) of used tire side walls (1B, 1C) that are stacked together side by side inside the tread (1A) of a tire (1) with one side wall removed. The tires are all of the same type, are cut to the same size and have side walls facing the same way. The number of assembled side walls in each section is designed to give reinforced resistance to diametrical pressure, and holes can be cut in the tops of the tire sections for water to enter the resulting duct, the ends of which can be consolidated with concrete to receive protective grids.</p> |
