延长县

延长县陡坡地利用方案的经济评价

Economical Evaluation of Utilization Schemes of Steeper Sloping Lands in Yanchang County

再次，应用崩塌稳定性分析方法，对延长县典型岩质崩塌应用赤平投影进行了稳定性评价，得出岩质崩塌大都处于不稳定。

Thirdly , applicating the stability analyses methods of collapses and the chek projection , the stability to the collapses of typical rock was appraised in Yanchang County .

延长县位于延安市东部，地质灾害严重。

Extension of the eastern part of the county is located in Yan ' an , a serious geological disasters .

主要工作及成果如下：首先，通过对野外调查资料的整理和统计，对延长县崩塌进行了分类，并对崩塌的发育基本特征和分布规律进行了归纳总结。

The major tasks and achievements are as follows : Firstly , through reorganizing and adding up the field investigation materials , the thesis classified the Yanchang collapses and concluded collapses ' growth essential feature and the distribution .