Rock Strata Control Simulation Technology章节测试课后答案2024春

第四章测试

1.For the research object of mine rock pressure, the main load is self-weight stress, followed by tectonic stress.（ ）
A:对 B:错
答案:A
2.The model frame is usually composed of main structure, loading system and measuring system.（ ）
A:对 B:错 3.Plane model can be divided into plane stress model and plane strain model according to different constraints on both sides.（ ）
A:对 B:错 4.The model is layered with mica powder to absorb moisture.（ ）
A:对 B:错 5.In the study of three-dimensional problems in underground space, need（ ）.
A:Plane stress model frame B:three-dimensional model frame C:Plane strain model frame D:swivel model frame 6.For the research object of mine rock pressure, the main load is（ ）.
A:Tensile stress B:self-weight stress C:Compressive stress D:tectonic stress 7.The next step of agitation in making the model is （ ）.
A:Measurement B:material ratio C:Installation template D:Loading 8.When the moisture content is reduced to make the mechanical properties of the material stable, the model excavation or cutting can be carried out only after the humidity is less than （ ）.
A:40% B:10% C:30% D:20% 9.At present, the model frame used in China is （ ）.
A:three-dimensional model frame B:Plane strain model frame C:Plane stress model frame D:swivel model frame 10.For the research object of mine rock mass pressure, the load to be considered is （ ）.
A:tectonic stress B:Compressive stress C:self-weight stress D:Tensile stress