Table 2 Sensor specification table.

From: Study on stress response and collapse mechanism induced by shallow-buried defective pipelines in river alluvial plains

Sensor model

Earth pressure sensor

Pore water pressure sensor

Diameter, mm

118

15.8

Thickness, mm

25

21

Measurement range, MPa

0.05–10

0.01–10

Accuracy

≤ 0.5% F S

≤ 0.3% F S

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