Analysis Of Negative Effect Mechanism Of "Developing Land Used For Building On The Mountain" In LinTong

"Developing land used for building on the mountain" is a way to alleviate the shortage of construction land in the rapid development of mountainous towns.However,this way is hard to avoid its negative effect.Based on the historical point of view,this paper analyzes the way and the "negative effect" of "Developing land used for building on the mountain" in LinTong.Combined with typical cases,with the help of numerical analysis method,we discuss the negative effect mechanism of "Developing land used for building on the mountain".The main conclusions are as follows:(1)Based on the historical and systematic analysis in the LinTong which is a mountainous towns in ShaanXi Province,the "Developing land used for building on the mountain" way has 4 kinds,respectively is digging foot of slope for building,excavation for building cave dwelling,cut through hills for building road,leveling the top of the mountain for building.The negative effects of these "Developing land used for building on the mountain" mainly include landslides,geological disasters,soil erosion and vegetation damage.(2)Put forward the conceptual model of the negative effect mechanism of digging foot(slope)for building.It can be expressed as "creep deformation,uniform deformation,non-uniform deformation,rapid deformation,after upheaval and stabilization".The numerical simulation is also carried out.(3)Put forward the conceptual model of the negative effect mechanism of excavation for building cave dwelling.It can be expressed as "stress adjustment of slope,stress increase in the cave side wall,soil damage at the top of cave".The numerical simulation is also carried out.Finally,a preliminary discussion of the prevention and control measures of the negative effects of two kinds of "Developing land used for building on the mountain" that are digging foot of slope for building and excavation for building cave dwelling are discussed.