沼泽开发区道路建设的研究

STUDY ON THE CONSTRUCTION OF ROADS PEAT BOG ZONE

根据对我国沼泽开发区道路建设的考察研究,阐述了泥泽的工程地质条件和沼泽的土体力学特性.提出了沼泽区道路建设的类型和评价,为资源开发提供依据。

peal Bog is a special kind of regional landscapre It is dist ributed mainly in the frigid areas of Northeast.No rthwest of China and Qinghai—Tibet Plateau.The evolution of eat bog has a close link wiLh the geographical conditions.It ften evolutes in the wide and smeven river valleys,or gentle slope along the food of a mountain.For this reason,it occpupies an importent place in the development of regional economy anb road construction peat bog has distinctive soil—mechanical characteristics. Tpehis is determined mainly by the decomposition raic of the peat pellets composition and the state of water content In the seasonal frozen earth and permafrost areas,the stress strenth of the peat bog's surface goes down as a result of frozen-than action.Meanwhile,the frozen-than action may also speed up the brokenine process,inercasc thc icnsity and improve the str- enth,But quite slowly,However,it is often an importent mea sure to drain away water of the peat bog and speed up the peat decomposi-tiou which improves the soil-mechenical charactor istics. The auther has investigated the matters of the road const ruction in partial peat bog zone in China probeis into the mec hanisms which cause the road rubsiding ground level descend ing and the forming of frost heaving Furthermore,the auther has pug forword some initial proposals for improving the engi neering measures and the quality of the road construction.