The use of geocell as soil stabilization and soil erosion countermeasures

Abstract

This work proposed a composite soil reinforcement method to support the vegetation growth and improve slope stability using geocell structures and wheat straws. Twelve physical models were developed for assessing rainfall intensities, slope steepness and geocell sizes on the soil erosion. The results showed that: (1) the geocell reinforced slopes maintained a good integrity, but the bare slope showed horizontal cracks; (2) the soil erosion was less than 40 g and more than 4000 g under the 50 mm/h and 100 mm/h rainfall intensities; the largest slope displacement was 2.5 mm and 7.5 mm, respectively; (3) the steep slopes showed a largest soil erosion of 5000 g and largest displacement of 8 cm, compared to 4500 g and 5.5 cm for gentle slopes; soil water contents were 40% and 30% for the steep and gentle slopes; (4) the measured soil erosion under the 100 mm/h rainfall was 4000 g and 5000 g for the small and large geocell reinforced slopes; the displacement of small geocell reinforced slopes were typically 1-2.5 cm smaller than large geocell reinforced slopes. It is concluded that the small geocell reinforced slope at a small inclination and low rainfall intensity has the best stability.

Effect of Hydro-mulch and Geo-jute Application on the Soil Loss during Cultivation of Corn (Zea Mays L.) in Dry Land

“…The differences in erosion values can be attributed to the higher land cover percentages in plots B and C due to the application of 5-mesh geo-jute, which enhances the soil's ability to withstand erosion. This is consistent with the study by Song et al (2021), which states that high slopes increase erosion. Higher land cover percentages reduce erosion potential as raindrops do not directly destroy the topsoil.…”

“…Therefore, the combination of hydro-mulch and geo-jute is the most effective in reducing erosion due to rainfall. The use of geo-jute is increasingly effective in reducing erosion when applied to gentle slopes (Song et al, 2021). This indicates that using hydro-mulch and geo-jute together is more effective in reducing erosion compared to using them individually.…”

Effect of bioengineering treatments on reduction of soil erosion from road cut slope and fill slope

“…In the present study, it was detected that GC performed well under certain circumstances due to two-dimensional protections of contiguous wooden lumbers. GC re-duces the runoff velocity and consequently the soil loss, in other words, GC reinforces the modified slope by holding the soil in position against erosion (Sato, Kojma 2018;Arvin et al 2019;Song et al 2021). This structure allows more time for infiltration and sediment deposition in each cell.…”

“…Many studies have emphasised the importance of conservation practices against soil loss. For example, Song et al (2021) used geo-cell-containing wheat straws to control soil erosion and provide suitable conditions for vegetation growth. The results showed that soil erosion increased with increasing rainfall intensity and cell dimensions.…”