A demolition project is underway in the Heilongjiang region, involving the excavation of underground pipes with a diameter of DN700.
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As the title suggests, there are underground pipes approximately 300 meters long at a depth of 3 meters; the medium flowing through these pipes is nitrogen as well as oil. The conditions underground are complex, and no one can be sure about them. For now, equipment has been deployed to investigate the conditions underground. The plan is to dig the pit manually, but the temperature outside is currently around minus 20 degrees, and the ground is frozen at least 1 meter deep. What methods can be used to dig this pit while taking precautions?
It is recommended to use static blasting machinery for excavating rock and soil in construction.
It’s cold outside; how do people grow vegetables under greenhouses?
The permafrost is so deep that it’s impossible for someone from the south to imagine
Why the rush? ? ? Is it just to generate more GDP? ? ? If it’s not urgent, you can wait until next year when the ice thaws and work can begin; meanwhile, you can find out more about the conditions underground····
Thank you for your reply. To clarify, the ground consists of soil with a frozen layer; which is more cost-effective, this equipment or a crane?
It’s definitely possible to do it; the key is to figure out how to do it well, in a cost-effective manner and without damaging the underground facilities. Is it necessary to dig 2.5 meters deep when growing vegetables in a greenhouse?
That makes sense; what you said is correct: lol
No need for that. But the surface soil in the greenhouse isn’t frozen, so it probably isn’t frozen underground either, right?
The grassroots level simply can’t handle that much workload – the deadline is tight; delivery is scheduled for October next year! Work will start in March after the New Year, and thawing won’t occur until mid-March. During March, the temperatures during the day are in the single digits above zero, but at night they remain below zero.