Abstract：Although there are many techniques for slope reinforcement，it isn¢t easy to utilize them economically or efficiently. Due to the deficiency of geological knowledge or some defects of reinforcement techniques themselves，some slope reinforcement projects are unsuccessful with huge economic losses and social problems. In view of the actualities of reinforcement techniques and great needs of project constructions in China and considering deficiencies of some available techniques for slope reinforcement，four new techniques in slope reinforcement are introduced in this paper，i.e.，the fiber bundle seepage-guiding drainage hole，prestressed anchoring beam，layered and reinforced stone-gabion retaining wall and prestressed anti-slide pile. Among the four new techniques，the first one is aimed at drainage hole jammed with soil and thin sand，and designed according to the idea that water can seep through the boundary surfaces between fibers，soil and thin sand. The second technique is developed to overcome some deficiencies of prestressed anchor-bars or anchor-cables. For example，anchor-bars or anchor-cables have smaller reinforcement scopes in some situations，and it is more difficult to adjust their anchoring forces under different geological conditions. Keeping main merits of general stone-gabion retaining walls (including convenient building materials and lower construction costs)，the layered and reinforced stone-gabion retaining wall is still characterized by higher reinforcement efficiency，in contrast to weaker linking strength and poor reinforcement effects of conventional one. Based on conventional anti-slide pile techniques，the prestressed anti-slide pile is developed with an aim of increasing its anti-sliding capability，which can be achieved by purposely placing one or several pre-stressed pillars near potential sliding planes of a slope. The fact should be noted that the above four techniques have been granted national invention patents.
