Counterfort retaining walls are optimized in the paper, using the optimum program, costs of different counterfort retaining wall parameters were calculated and based on the contrast analysis.

The paper,based on the characters that counterfort wall applies to soil filling,analyzes the stress of counterfort wall,calculates the loading,test the stability,and mentions the requirements of construction,along with the supporting structure adopted by a road leading to a local coal mine.

Based on reverse circulation boring method and manually excavated dry-bored pile,the article discusses the actuality of counterforted pile foundation work,which ensures the quality and safety of the project.