农村田间道路(包括拖拉机道、马车道、对外公路等)多为低级路面,且多处于灌区、水田、盐碱、沼泽等水文地质条件不良地带,早春化冻时翻浆严重,致使拖拉机无法下地,对外交通阻塞,严重影响春耕生产。道路翻浆是水、土、温、压综合作用的结果,一般应针对这些因素采取防治措施。 1.提高路基 灌区、洼地、沼泽地带的道路,若路基高出地面不多,且两侧地表长期积水,地下水位也较高者,可采用此法根治其返浆。路基提高的高度,一般亚砂土路基要高出地下水位1.1—1.5米,粘性土高出1.6—2.0米,粉质土高出2.0—2.4米,砂砾土高出50 Most of rural rural roads (including tractor tracks, carriageways, external roads, etc.) are mostly low-grade pavements, and are mostly in areas with poor hydrogeological conditions such as irrigation areas, paddy fields, saline-alkali lands and swamps. Traffic congestion, seriously affecting the spring production. Road heaving is the result of water, soil, temperature and pressure. Generally, prevention and control measures should be taken for these factors. 1. To improve the road embankment irrigation area, swampy roads, if the roadbed is not much above the ground, and long-term surface water on both sides of the ground, groundwater level is also higher, this method can be used to rule its back to pulp. Raise the height of the subgrade, the sub-sand subgrade generally higher than the groundwater level 1.1-1.5 meters, clay soil higher than 1.6-2.0 meters, silty soil 2.0-2.4 meters above the gravel soil higher than 50