Research On Soil Stabilizer Application In Expansive Soil Terraced Ridge

Terrace construction is the effective measures to control soil and water loss of sloping farmland.It has been widely spread in the hilly area and becomes an important technical measure to improve farmers’ income,to solve the problem of food and clothing.Qin-ling Bashan mountains area is an important water source protection area of South-to-North Water Transfer Project in China.Terraced fields as an important technical measures could promote economic development and prevent soil erosion.The terrace ridge collapse phenomenon is very serious due to high clay content of soil,rain intensity,soil water expansion of natural factors and construction,development and utilization of the irrational social and economic activities.Soil stabilizer as a newly solidified material,has the advantages of wide application range,good curing effect,local materials,low prices,construction,and maintenance is convenient.The study,which uses the soil stabilizer to build terrace ridge,explores the construction technology and technical methods of using the soil stabilizer to build terrace ridge in the expansive soil terrace ridge,effectively solves the terracing required materials shortage,has important practical significance.This article chose a stability of the soil curing agent which based on previous studies,and stabilized soil curing agent is applied to the expansion of soil water stability and anti-disintegration of the preliminary experimental study,and determined the construction technology and technical method of using soil stabilizer in expansion construction of the terrace ridge.The following main conclusions:(1)From laboratory test results,in the amount of soil stabilizer incorporation 0.1% ~0.5% range,with the increase of the concentration of stabilized soil curing agent,expansive soil water stability strength increased,in the tested soil disintegration time prolonged,anti-disintegration strength increased.(2)From the field test results,the incorporation with soil stable curing agent for curing cement ridge preservation is good,especially for the high incorporation 0.5% full curing cement processing ridge,there was no collapse phenomenon,it is important to note that the low incorporation with 0.1% of the amount of the curing cement construction method and the incorporation with 0.5% curing cement floors 20 cm the micro degrees breaking camp.(3)The test results and analysis show that the basic to achieve the purpose of the experiment design.The selection of soil stability curing agent can stabilize expansive soil to a certain extent,and have no effect on vegetation growth.At the same time,it determines the20 cm soil layer with high concentration of curing to consolidate the construction way of technology.Using soil stabilizer to build terraced fields in expansive soil area in the construction of terraced ridge is feasible.