Abstract：Research purposes:Combined Ethiopia light rail transmit investigation project ( phase one) ，the stratum lithology characteristics and physical and mechanical properties of basalt residual soil is analyzed by the comprehensive methods of mapping，exploration and laboratory tests．Comparison of domestic usual measures and local construction experience，engineering schemes of basalt residual soil are provided preliminarily．
Research conclusions: (1) Basalt residual soil is different from granite residual soil and common cohesive soil．Laboratory test result shows that it has some special traits such as smaller natural density，larger water content and void ratio，the free expansion rate greatly changes．(2) It is better to take many methods，such as in － site，laboratory test and engineering prospect，to make geotechnical analysis and evaluation of basalt residual soil in field investigation processing．(3) Chinese codes can be referred during investigation，but it can not be directly used，the local geotechnical investigation data，engineering experiences and methods should be collected in construction period．(4) This research results can be applicated for investigation of geotecnical engineering of metro and light rail transit in igneous area．
Bao Xiaodong． Engineering Geological Properties of the Remainder Soil from Weathering Granite in Shengzhen District ［J］．Railway Investigation and Surveying，2004 (2) :72－74．
［2］ TB 10012—2007，铁路工程地质勘察规范［S］．
TB 10012—2007，Code for Geology Investigation of Railway Engineering［S］．
［3］ TB 10018—2003，铁路工程地质原位测试规程［S］．
TB 10018—2003，Code for In － site Measurement of Railway Engineering Geology［S］．
［4］ GB 50307—1999，地下铁道、轻轨交通岩土工程勘察规范［S］．
GB 50307—1999，Code on Geotechnical Investigations for Metro and Light Rail Transit［S］．
［5］ DBJ 15—31—2003，建筑地基基础设计规范［S］．
DBJ 15—31—2003， Design Code for Building Foundation［S］．
［6］ DBJ 13—07—2006，建筑地基基础技术规范［S］．
DBJ 13—07—2006，Technical Code for Building Foundation［S］．
［7］ DBJ 13—84—2006，岩土工程勘察规范［S］．
DBJ 13—84—2006， Code for Investigation of Geotechnical Engineering［S］．
Yao Yuchun． Experimental Study on Calculation Parameter of Settlement for Completely Weathered Granite Foundation of Hainan Eastern Passenger Dedicated Line［J］．High Speed Railway Technology， 2011(6) : 48－52．
2013, Vol. 30 
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