For the frozen weathered bedrock, sandy gravel and pebble bed, it is more suitable to use drilling and blasting method than to use the frozen soil excavator.
对冻结风化基岩、砂砾层或卵石层，冻土挖掘机效率低，宜采用钻眼爆破法，采用抓岩机装载冻土。
Frozen city line depth is 0.8 meters, for the sandy clay soil, the main road width of 40 metres, are laying asphalt.
城市的冰冻线深度为0.8米，土壤为砂质粘土，主要马路宽为40米，均由柏油铺设。
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