岩体结构面（rock discontinuity structural plane）是指在构造应力作用下岩体中所产生的各种构造遗迹（包括断层、节理、层理和破碎带等）具有一定方向、延展较大、厚度较小的两维面状地质界面。岩体结构面把岩体切割成既连续又不连续的裂隙体。
岩体结构面通过几何学和力学两方面影响岩体稳定性。
Through the two aspects of geometry and mechanics, stability of rock mass is influenced by discontinuities.
试验表明，岩体结构面方向与其力学特性有着密切的关系。
The experimental results show that there exists very close relation between the mechanical performance and structural plane direction.
从工程实际出发，讨论了岩体结构面直剪试验方法的选取原则。
On the base of engineering application, the select principle of method of rock discontinuity shear strength is discussed.
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