On September 28th, 2018, at 18:02 local time (10:02 UTC), a strong earthquake of magnitude Mw = 7.5 struck Central Sulawesi Province, Indonesia. The epicenter was located at 0.256o south latitude and 119.846o east longitude, around 77 km from Palu city, and 20 km below the ground surface. To understand the damage caused by the earthquake, and find a solution to mitigate the geo-disasters in Indonesia, a preliminary investigation on the 2018 Sulawesi earthquake was conducted from 16 to 20 November 2018. This quick report focuses on ground displacements induced by fault movement and large-scale ground flow. During the survey, there is some geotechnical damage were found, such as ground displacement induced by fault movement, liquefaction, landslides, and large-scale ground flow in some certain areas. Large ground displacement was found in some particular areas, such as Kedondong, Pipa Air, Pangeran Diponegoro and Cemara streets in Palu city. The earthquake also triggered large-scale ground flow in some different sites, such as Balaroa and Petobo districts in Palu city and Jono Oge and Sibalaya Villages. The locations of large ground displacements appeared at surface coincide well with the estimated fault line. Therefore the large ground displacements were seems to be induced by the fault movement. Large ground flow caused severe damage to not only human but also houses and buildings. The mechanism of the large ground flow should be clarified in near future.

中文翻译：

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印度尼西亚2018年苏拉威西地震的岩土工程破坏

2018年9月28日，当地时间18:02（世界标准时间10:02），印度尼西亚苏拉威西省发生了Mw = 7.5级强烈地震。震中位于南纬0.256o，东经119.846o，距帕卢市约77公里，在地表以下20公里。为了了解地震造成的破坏并找到减轻印度尼西亚地质灾害的解决方案，于2018年11月16日至20日对2018年苏拉威西地震进行了初步调查。该快速报告重点介绍了断层运动引起的地面位移和大规模的地面流量。在调查过程中，发现了某些岩土工程破坏，如断层运动，液化，滑坡和某些地区的大规模地流引起的地面位移。在某些特殊地区，例如帕卢市的Kedondong，Pipa Air，Pangeran Diponegoro和Cemara街道，发现了大的地面位移。地震还引发了一些不同地点的大规模地流，例如帕卢市的Balaroa和Petobo地区以及Jono Oge和Sibalaya村。地面出现大的地面位移的位置与估算的断层线重合。因此，大的地面位移似乎是由断层运动引起的。大量的地面流不仅对人，而且对房屋和建筑物均造成严重破坏。应在不久的将来弄清地面流量大的机理。例如帕卢市的Balaroa和Petobo地区以及Jono Oge和Sibalaya村庄。地面出现大的地面位移的位置与估算的断层线重合。因此，大的地面位移似乎是由断层运动引起的。大量的地面流不仅对人，而且对房屋和建筑物均造成严重破坏。应在不久的将来弄清地面流量大的机理。例如帕卢市的Balaroa和Petobo地区以及Jono Oge和Sibalaya村庄。地面出现大的地面位移的位置与估算的断层线重合。因此，大的地面位移似乎是由断层运动引起的。大量的地面流不仅对人，而且对房屋和建筑物均造成严重破坏。应在不久的将来弄清地面流量大的机理。