Slope failure mitigation practices are well developed in recent years. Recently, geosynthetic, geocell, and geogrid combined with micropiles are being used extensively in various slope stabilization works. But integrated approaches are still lacking. In this study, a method of slope stabilization is proposed by integrated use of micropile, geocell and geogrid from an engineering and economical point of view. The study was done on slope failure located at Chandragiri Hill, south west of Kathmandu, Nepal. Geotechnical problems of the site, the design of geocell foundation, micropile and geogrid are done on the based on numerical analysis using Phase-2 software with field data. The results of analytical studies revealed that, the use of a combination of geocell, micropile and geogrid is beneficial in increasing slope stability. As per numerical analysis, in the slope failure site, geocell gravity walls each of 3.8 m, is constructed in different step. Beneath the geocell wall, different layers of geogrid were placed filled with granular materials. The geocell wall is connected with micropile from inside. The micropile works as an anchorage and support for geocell wall, which increases the stability of a failed slope.

中文翻译：

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土工格墙，土工格栅和微型桩锚对缓解不稳定斜坡的有效性

近年来，减轻边坡破坏的方法已得到很好的发展。近年来，土工合成材料，土工格室和土工格栅与微桩相结合已广泛用于各种边坡稳定工程中。但是仍然缺乏集成的方法。在这项研究中，从工程和经济角度出发，提出了一种通过结合使用微型桩，土工格室和土工格栅来稳定边坡的方法。这项研究是对位于尼泊尔加德满都西南部Chandragiri Hill的边坡破坏进行的。在使用阶段2软件和现场数据进行数值分析的基础上，完成了场地的岩土工程问题，土工格室基础，微桩和土工格栅的设计。分析研究的结果表明，结合使用土工格室，微型桩和土工格栅有助于提高边坡稳定性。根据数值分析，在边坡破坏现场，在不同的步骤中分别构造了3.8 m的土工格室重力墙。在土工格室墙的下面，放置了不同层的土工格栅，其中填充了颗粒状材料。土工格室壁从内部与微型桩相连。微桩可作为土工室墙的锚固和支撑，从而增加了失稳斜坡的稳定性。