IBIS-L is an advanced remote monitoring system based on microwave interferometer, which integrates the interferometric survey, stepped frequency- continuous wave and synthetic aperture radar. IBIS-L can do high precise, large range, Omni-directional, real-time and remote displacement monitoring. The system can be widely applied in the monitoring of small-displacement changes in the dam, mountain, slope, surface, buildings and bridges[1]. The monitoring technology can get the displacement changes of every part, analyze the deformation mechanism and characteristics and forecast the disaster of dangerous region timely. So it can provide a reliable basis for disaster prevention, greatly reducing or avoiding the loss on people's life and property. We introduce the external deformation monitoring process and outcome of IBIS-L in a hydropower station dam and provide a useful reference for the application of IBIS-L to the similar dam.

Plastic forming of metal material is a complex process. To predict and explore the forming law of these issues must be based on computer-based numerical methods. In this article, the shearing step of a textile knotted knife is studied. With the application of the DEFORM finite element analysis software, we make a dynamic numerical simulation of shear fracture on the tool sheet. After analyzing material’s stress and strain distribution in the plastic deformation zone and plastic flow vector in sheet deformation zone, the variable distribution curve of strain state can be obtained. And by comparing with the simulation experiment, acceptable product can be received. Through the numerical simulation, we can have an intuitive understanding of the plastic deformation process of this sheet, in the mean time; deeply understand the mechanism of plastic deformation. The numerical analysis method and the selection of the parametric have a significance of guiding and reference to the quality improvement of knotted knife products.

The paper has systematically studied stability, deformation property and early warning of high engineering slope in depth, and established the early-warning monitoring system of slope. The results show that: ① The time of displacement deformation is more consistent with the slope treatment, as well as the position of dislocation more consistent with geological conditions, and displacement deformation is less below the position and basically unchanged below a certain depth. ② Lateral deformation increases with increasing reduction factor. Lateral deformation has smaller increment with smaller strength reduction factor, and has a larger increment with larger strength reduction factor. ③ The early-warning monitoring system of slope safety based on deformation amount and safety factor is established.

Through the field test of Mayanpo slope at Xiangjiaba Hydropower Station, external deformation, deep deformation, groundwater level and stability of the slope with weak interlayer are analyzed in this paper. The results show that: ① displacement deformation increases with time and decreases with increasing depth. Changes of displacement can be divided into three stages: deformation rapidly increases in the early, and slowly increases in the medium, and becomes gradually stable in the later. Changing rate of displacement decreases with time, and the rate can also be divided into three stages, basically consistent with the displacement changing stage; ② a certain thickness of weak interlayer and evident dislocation exists in slope strata. Dislocation rate first increases and then decreases until basically stable, and local fluctuation is mainly affected by rainfall and dynamic equilibrium adjustment of the slope internal deformation; ③based on the penalty function contact of pile soil and the surface of rock mass, the three-dimensional numerical model of coupling of seepage and strain has been established, and through analyzing and comparing with field test data, it is verified that the model is feasible in the study on slope deformation; ④ through stability analysis of Mayanpo slope by strength reduction FEM, stability coefficient is 1.72.

The paper analyzed external deformation, deep deformation and stability of slope with weak intercalated layers in detail through field monitoring of Mayanpo slope at Xiangjiaba Hydropower Station. The results show that: ① Displacement deformation increases with time and decreases with increasing depth, and displacement rate decreases with time. ② Dislocation position exists in weak intercalated layers. Dislocation rate first increases and then decreases until basically stable, and local fluctuations are mainly affected by rainfall and dynamic equilibrium adjustment of the slope internal deformation. ③ Through stability analysis of Mayanpo slope by strength reduction FEM, stability coefficient is 1.72.