Surface subsidence measurement table layout: each paragraph above if length ≤ 100 m, you need 3 layout measuring desk stuck on a horizontal monitoring latest on geotextiles prevents the layer, the middle of the segments (table 1, table 2, line platform at heart in the edge of the the background role of the road). If length > 100 m, need minimal layout 2 sections related trăc stuck on and add 100 m back layout 1 (deployed in places where subsidence is likely more).
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