The Wuxing-Deqing section of the Huhang Expressway is an important high-speed project in the “13th Five-Year Plan” for the comprehensive transportation development of the province, and it is also the “three vertical and three horizontal” expressway network in the “13th Five-Year” plan for the comprehensive transportation development of Huzhou City. “One Vertical”. “The implementation of this project will add a highway from Huzhou to Hangzhou, relieve the traffic pressure of Hangzhou-Ningbo and Lianhang, improve the road network structure in the eastern part of Huzhou area and the highway transportation network in the center of the Yangtze River Delta, and will be the economic integration of the Yangtze River Delta. , The development of Hangzhou Metropolitan Economic Circle provides reliable transportation guarantee.

Before the curing of the Huhang high-speed construction site

The importance of the Huhang Expressway is beyond words. However, due to the characteristics of Zhejiang’s geographical environment and the dense water network, it is particularly important to solidify the roadbed of the expressway. According to the plan, the land covered by the tender is mostly water puddles and farmland, which has been soaked in water for a long time. These soft soils are mostly cohesive soils with very low load-bearing capacity, so direct construction on the surface cannot be carried out. The shallow soil needs to be solidified first to ensure the smooth progress of subsequent construction.

After solidification of the soil stabilization system

At this time, Yichen Environment’s soil stabilization system helped a lot. As the name suggests, this system can cure soft soil in situ. First of all, we will select a suitable binder according to the soil condition of the construction site. The selected binder raw materials will be placed in the powder silo. According to a predetermined ratio, these raw materials will enter the PLC controling feeder through the pipeline for mixing and stirring to form the binder. Finally, it is transported to the front powerful excavator mounted power mixer through the pipeline, and the excavator mounted power mixer sprays and stirs the binder deeply to realize the in-situ solidification of the soft soil.

material tanks and PLC controling feeder

The soil stabilization system is working

The project uses 2 sets of one-to-two curing equipment, a total of 4 mixing heads, a total construction cubic meter of about 500,000 cubic meters, and a curing depth of 3 meters. The base layer solidified by the soil stabilization system is stable and firm, with a certain bearing capacity, which can ensure that heavy machinery enters the site for construction without the risk of subsidence. Compared with the traditional filling of gravel after dredging, the curing period of the soil stabilization system is much shorter, which can effectively reduce the project cost. And it directly turns soft soil into waste, saves gravel resources, conforms to the concept of sustainable development, and is a green construction method.