Research Article
Instability Process Model Test for Bedding Rock Slope with Weak Interlayer under Different Rainfall Conditions
Table 1
Rainfall data in Changsha in recent 50 years.
| | Years | 1961∼1970 | 1971∼1980 | 1981∼1990 | 1991∼2000 | 2001∼2010 |
| | Average annual rainfall days | 140 | 132.8 | 132.6 | 139.5 | 129.3 | | Average annual rainfall frequency | 0.383 | 0.364 | 0.363 | 0.382 | 0.354 | | Average annual rainfall (mm) | 1434.86 | 1343.17 | 1361.36 | 1589.53 | 1347.25 | | Average daily rainfall intensity (mm) | 10.25 | 10.11 | 10.27 | 11.39 | 10.41 | | Extremely average rainfall (mm) | 3056.8 | 2304.6 | 1612.5 | 590.3 | 1795.25 | | Extreme rainfall days | 40 | 32 | 22 | 10 | 32 | | Extreme rainfall intensity (mm) | 76.42 | 72.01 | 73.29 | 59.03 | 56.10 |
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Notes. Average daily rainfall intensity = average annual rainfall/average annual rainfall days; extreme rainfall intensity = extremely average rainfall/extreme rainfall days.
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