有机质含量，对均质坝不大于5%。
均质坝下游护坡的作用是防止雨水冲刷，风浪、冰层和水流作用，动物、冻胀干裂等对坝坡的破坏。
For downstream of homogeneous DAMS, damages caused by rain scouring, storm, ice, stream, animal, swelling, and mud crack must be avoided.
点砂坝与决口扇砂体属于中等非均质储层。结论 储层的层内非均质性中等，层间及平面非均质性较强；
The crevasse and point bars are of intermediate heterogeneity. Conclusion Inlayer macro heterogeneity is intermediate, the interlayer and horizontal macro heterogeneity are relatively strong;
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