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土壤系由土粒、水份和空气所组成的三相物质。填筑土堤,防御洪水,即要求土堤要具有一定的稳定性和抗洪能力。由于土壤在本质上含有水份和空气,因而可以对填筑土堤的土料进行硪实。土壤密实程度的加大可使土堤的渗透系数减小,而使抵剪强度和抗压强度加大,因此土壤的干容重就直接标志着填土的质量标准,土堤的硪实也直接影响着工程的造价问题。历年来,堤防岁修施工规范中对土堤硪实的质量要求是“填筑松踩层30公分,再用石滚硪行打一遍,计硪功为20公斤一公尺/平方公寸的作用下,土层压缩率为25％,干容重达1.5
Soil is a three-phase material composed of soil particles, water and air. Filling embankment, defensive floods, which requires earth embankment to have a certain degree of stability and flood resistance. Because the soil contains moisture and air in nature, it is possible to solidify the soil that is filling the earth’s embankment. The increase of soil compaction can reduce the permeability coefficient of earth embankment, and increase the shear strength and compressive strength. Therefore, the soil dry weight directly marks the quality standard of earth filling, and the embankment of earth embankment is also directly Affect the cost of the project. Over the years, embankment construction regulations in the embankment on the real quality requirements are "filling loose step by step 30 cm, and then hit it again with a stone roll, the meter Gong is 20 kg one meter / square inch role Under the soil compression rate of 25%, dry weight of 1.5