Advances in Civil Engineering / 2020 / Article / Tab 2

Research Article

Assessment of the Excavation Damaged Zones in the Surrounding Rock of an Underground Powerhouse under High In Situ Stress Using an Acoustic Velocity Detecting Method

Table 2

Depth of EDZs around the main powerhouse in Houziyan project.

Position of testing boreholesUpstreamDownstream
Elevation (m)Section (m)Depth of HDZ (m)Depth of SDZ (m)Depth of HDZ (m)Depth of SDZ (m)

17180 + 008.85.810.512.419.8
17180 + 041.34.46.211.516
17180 + 73.83.89.4617.7
17180 + 106.33.619.83.811.6
17180 + 152.08.29.62.14

17110 + 008.82.88.41017
17110 + 041.35.2101214
17110 + 73.83.6111017.2
17110 + 106.36.911.810.711.2
17110 + 152.04.26.24.28.8

17040 + 008.83.2610.314.8
17040 + 041.31.614.51213.7
17040 + 73.83.213.24.212.8
17040 + 106.35.47.67.614
17040 + 152.03.282.49

16970 + 008.82.510.15.49
16970 + 041.35.8187.310.2
16970 + 73.8220.67.913.6
16970 + 106.3212.22.86.4

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