Saline Soil And Treatment

With the fast development of China's economy and implementation of" development of the West Regions" policy, the western part becomes the hot land where the Chinese geotechnical engineering develops rapidly, but because the study on saline soil characteristic and ground treatment method is still in the stage of starting, Our country builds every geotechnical engineering in the most centralized area of saline soil, such as Qinghai Province, Xinjiang, Inner Mongol, etc. There exist the long problem of time limit for a project and high cost of the project in these projects, and there happen the great projects accident frequently. Urgently understand this kind of ground soil further. Up until now, there are little studies on saline soil characteristic and treatment method also. On our country present research situation, railway, traffic, and building department go on more research work in saline soil area, and make very great success in the project. The current situations can't fulfill the needs of the western economic development. Especially there have a great deal of insufficiently in the traditional saline ground treatment methods yet, so need new ground treatment method urgently to guarantee the project security and rational investment.Through the experiment inside and outside, the thesis analyzes that saline soil characteristic, various kinds of factors influencing the physics mechanics characteristic of saline soil and the transformation rule of the characteristic , breaking through routine, and proposes the method of "Lowering water+gravel piles+ salt change by foundering" composite ground on the basis of fully analyzed and proved. It is different from the routine ground treatment method laying particular emphasis on the" defending" word in designing and construct, But utilizes weather factor, the expansion of salts of the saline soil on its own initiative to improve bearing capacity of the ground and rigidity of soil of the ground body. And combine the project instance, carry on comparative analysis. The treatment result indicates that this method is feasible on technology and has reached the designing requirement of the project. Besides, the method offers a kind of new reference for the ground treatment of the saline soil area too, and the materials of pile body makes the cost fall a lot, because it adopt the detritus enduring corrosion such as granite detritus. So the method has very high popularization value.