西藏尼玛县文部乡地质灾害危险性及场镇适宜性综合评估

Comprehensive Assessment of Geological Hazard Risk and Suitability of Field and Town in Wenbu Township,Nima County,Tibet

文部乡位于尼玛县南部,距离尼玛县政府驻地尼玛镇约81公里,人口集中,场镇总体地势开阔,场镇后山泥石流地质灾害集中发育,对文部北村居民及场镇建筑物等威胁较大。为此,选择文部场镇作为重点场镇开展地质灾害综合调查,通过分析场镇地形地貌、地层岩性等地质条件、并结合工程测绘、钻探等手段对场镇地质灾害、地质环境等进行调查研究,对场镇规划范围地质灾害分布特征和危险性进行评估,在此基础上,对场镇规划范围建设用地适宜性做出分区评估。

Wenbu township is located in the south of Nyima County,about 81 kilometers away from Nima town,where the Nyima County government is stationed,it is a big threat to the residents of Beicun and the buildings of Chang town.To this end,Wenbuchang town was chosen as the key town to carry out a comprehensive survey of geological disasters,through the analysis of geological conditions such as topography and geomorphology,strata and Lithology,and combined with engineering surveying and mapping,drilling and other means,the geological hazards and geological environment of Changzhen are investigated and studied,on the basis of the assessment of the distribution characteristics and risk of geological hazards in the planning area of the market town,the suitability of the construction land in the planning area of the market town is assessed.