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为某截水减压式干船坞工程而作的地下连续墙施工试验槽段深37米、厚0.8米,依次穿过12米厚的粘性土层、20米厚的密实粉细砂层(局部夹有钙质砂僵石)、最后嵌入砂质粘土中5米,兼起承重与防渗双重作用。成槽总量869米~2。槽段上部用导板
The depth of 37 m deep and 0.8 m thick for the test of the construction of underground continuous walls for a certain type of dredging and decompression dry dock works, followed by passing through a 12-meter-thick cohesive soil layer and a 20-meter-thick compact fine sand layer (partially With a calcareous sandstone, it is embedded in sandy clay for 5 meters. It also plays a dual role in bearing and impervious. The total amount of groove is 869 meters~2. Guide plate for upper section