北沙河

裂缝性岩石裂缝扩展的光弹构造物理模拟&以南华北盆地户部寨沙河阶组为例

A Photoelastic Experiment for Fracture Extending in Fractured Rocks : An Example from the Shahejie Formation in the Southern North China Basin

利用研究区沙二段砂岩分区的类型，岩屑类型及含量变化，重矿物含量变化，分析埕北断阶区沙河街组二段的物源区。

Based on the comprehensive analysis of sandstones types , types and content differentiation of debris , content differentiation of heavy minerals in the number 2 of Shahejie Formation .

针对中国北方季节性河流的特点，为了达到河流生态修复与水质净化的双重目的，在山东省南水北调沿线小沙河污染控制区的某条重点河流内，建设了橡胶坝。

According to the characteristics of the seasonal river in northern China . In order to achieve the dual purpose of river ecological restoration and water purification . The government had constructed the rubber dam in the river of the pollution control area of the south-to-north water diversion project .