The Great Wall was announced as the first batch of key cultural relic unit under State Protections by State Department in 1961

and was listed as the world cultural heritage by UNESCO in 1987. And these constructions are humankind’s precious cultural heritage

and their valuable artistic value is rare worldwide. Through the compression test

the shear strength test and the infiltrate test

the results of test indicate that the compression strength and the shear strength increases with the PS material consistency and the reinforcement times

and that he PS meterials can be multiple application. At the same time

the results show that the 7 % PS materials is the best consistency to consolidating the soil of the Great Wall. In addition

the permeability coefficient of the reinforced sample decreases and the permeability meets the requirements of preservation of cultural relics. By a comprehensive analysis

the 3 %—5 % of PS is suitable for consolidating the wall whose dry density is 1.5—1.7 g•cm-3

but 5 %—7 % of PS is fit for consolidating the wall whose dry density is 1.3—1.50g•cm-3. In sum

the key to protecing ruins is choosing the suitable PS consistency material and consolidation times in order to enhancing penetrability of PS material. So this reinforced method could be effective in protecting the Great Wall of Qin Dinasty in the Warring States in Northwest China.