论文部分内容阅读
一八三厂是由深山迁出的三线调整企业之一,占地28ha,一条河流经厂区和生活区709m。在地质构造上,位于贵阳复式向斜核部东翼,岩层倾向235°～245°,倾角40°,场区基岩属中下侏罗系(J_(1～2))褐黄色砂岩,紫红至灰绿色泥岩、砂质泥岩,间夹薄层泥质粉砂岩,第四系堆积物厚度较大。通过实际开挖,由设计确定的持力层起伏较大。砂岩、砂质泥岩抗风化能力弱,强风化厚度不一,一般为1 m左右,地下水位较高。从地质条件看,填土厚度较大,一般为2～3 m左右,局部场地达4～7 m,即便压实,容许承载力[R]也很低,仍不能满足地基要求,建筑物基础直接置于岩石上(中等风化层)较理想。根根详勘报告,桩
The 183rd factory is one of the three-line adjustment enterprises moved out of the deep mountains. It covers an area of 28ha, and a river flows through the plant and living area by 709m. In terms of geological structure, it is located in the east wing of the compound syncline core of Guiyang. The rock formations tend to be 235° to 245° with an inclination of 40°. The bedrock in the field belongs to the middle Jurassic Jurassic (J_(1～2)) brown-yellow sandstone, purple To gray-green mudstones, sandy mudstones, and thin argillaceous siltstones, the thickness of Quaternary deposits is relatively large. Through actual excavation, the bearing layer determined by the design fluctuates greatly. Sandstone and sandy mudstones have weak weathering resistance, and their weathering thickness varies. Generally, they are about 1 m high and the water table is high. Seen from the geological conditions, the filling thickness is relatively large, generally about 2 to 3 m, and the local site is 4 to 7 m. Even if compacted, the allowable bearing capacity [R] is low, the foundation requirements cannot be met, and the building foundation is not satisfied. It is better to place it directly on the rock (medium weathered layer). Root survey report, pile