大学MOOC Soil Mechanics(Xi'an Jiaotong University)1461321171 最新慕课完整章节测试答案
Chapter 2 Permeability of soil and seepage force
文章目录
- Chapter 2 Permeability of soil and seepage force
- Chapter 3 Stress calculation in soil
- Chapter 4 Soil compressibility and calculation of foundation settlement
- Chapter 5 Shear strength
- Chapter 6 Bearing capacity
- Chapter 7 Slope stability analysis
- Chapter 8 Earth pressure and retaining walls
- Chapter1 Basic characteristics and engineering classification of soils
- Introduction
Exercises
1、单选题：
According to geological exploration, saturated unit weight of a certain soil layer is 19.6KN / m3. Its critical hydraulic gradient is（ ）
选项：
A: 1.0
B: 0.63
C: 0.51
D: 0.70
答案: 【 1.0】
2、单选题：
Darcy’s law shows that the discharge velocity bears a linear relation with （ ）for sand.
选项：
A: the seepage time
B: the cross-sectional area of seepage
C: the hydraulic gradient
D: the seepage distance
答案: 【 the hydraulic gradient】
3、判断题：
Due to the existence of capillary cohesion, some sand sculptures can be built in the seaside area（ ）
选项：
A: 正确
B: 错误
答案: 【 正确】
4、判断题：
The coefficient of permeability of different soil layers in the layered soil are equal（ ）
选项：
A: 正确
B: 错误
答案: 【 错误】
Chapter 3 Stress calculation in soil
Exercises
1、单选题：
When calculating geostatic stress of the soil layer, ( ) should be used for permeable soil with (i.e., sand and clay) below the groundwater level.
选项：
A: unit weight
B: saturated unit weight
C: buoyant unit weight
D: dry unit weight
答案: 【 buoyant unit weight】
2、单选题：
The stress state of the ground soil under the strip foundation can be simplified as ( ) for analysis.
选项：
A: one-dimensional stress
B: plane strain
C: plane stress
D: three-dimensional stress
答案: 【 plane strain】
3、判断题：
The groundwater level of a foundation is 2.0 m below the ground. When the groundwater level drops to 5.0 m, the vertical geostatic stress of the soil at 3.0 m below the ground will decrease（ ）
选项：
A: 正确
B: 错误
答案: 【 错误】
4、判断题：
The effective stress principle shows that the total stress is equal to the sum of the effective stress and the pore water pressure（ ）
选项：
A: 正确
B: 错误
答案: 【 正确】
Chapter 4 Soil compressibility and calculation of foundation settlement
Exercises
1、单选题：
H is the maximum drainage distance. When the soil layer is drained on one side, H is the thickness of the soil layer. When the soil layer is drained on both sides, H is（ ）of the thickness of the soil layer.
选项：
A: 1times
B: 0.5times
C: 1.5times
D: 2times
答案: 【