The new method takes full advantage of surrounding construction conditions such as the geography and geologic condition of shaft and adopts reverse guide shaft to construct shaft.
充分利用竖井地理、地质等周边施工条件，采用反导井法进行竖井施工。
The new method takes full advantage of surrounding construction conditions such as the geography and geologic condition of shaft and adopts reverse guide shaft to construct shaft.
充分利用竖井地理、地质等周边施工条件，采用反导井法进行竖井施工。
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