Abstract：Nanpanjiang Bridge，a huge bridge under construction on the Jiuxiang-Shilin-Alugudong second-grade road，is located on the gorge terrain in Yiliang County of Kunming City，Yunnan Province，China. The two sides of the Nanpan River where the main piers are located are consisted of cliffs of dolomite rock matrix. The rock masses are decomposed into rock blocks of different sizes with lot of joints and fissures，and some of them have become dangerous ones. Having taken the engineering geological conditions of the slopes of the bridge into sufficient considerations，many kinds of measures are used in the remediation works，such as pre-stressed anchored cables with connection beam，pre-stressed cables net，combined bolting and shotcrete，combined piles and sheeting crushed-stone-retaining wall，drain trench，seeding works，etc. Pre-stressed cable net is used to control the dangerous rock mass in this project，and the concept，design and construction methods of it are creatively presented. This technique can be used effectively in the remediation works for dangerous rock mass，especially when size of the rocks is big enough and strength of them is high as well. Meanwhile the design method of pre-stressed anchored cables with connection beam is also introduced in details. The slops remediation works are now under construction.
