(7-1)全风化混合岩(Z)

褐黄、灰黄色, 岩芯呈坚硬土柱状, 原岩结构清晰, 遇水易软化、崩解, 矿物成分除石英质残留外, 其他已基本风化呈土状。主要呈层状分布于残积土之下, 该层局部地段揭露, 层厚1.30~11.80m, 顶板标高-8.24~22.78m。根据补勘土工试验揭示: 该层天然密度ρ=1.78～2.05g/cm3；压缩系数为0.24~0.54Mpa-1, Es 0.1~0.2=3.20～7.01MPa, 具高压缩性。标贯试验76次, 击数为30~49击, 平均40.0击。

It can be divided into following four weathering belts according to different weathering degrees:   

(7-1) Full weathered migmatite (Z)

It is tan and grayish yellow, rock core looks like hard and earth column, virgin rock structure is clear, easy to soften and disintegrate when wet; except for quartzy residue, other mineral compositions are basically weathered and looks like earth. It is mainly layered distribution, below the residual soil; the layer is locally disclosed, layer thickness is 1.30~11.80m, elevation of top plate is -8.24~22.78m. In accordance with disclosure of geotechnical test of supplementary investigation, natural density of the layer is ρ=1.78～2.05g/cm3; compression coefficient is 0.24~0.54Mpa-1, Es 0.1~0.2=3.20～7.01MPa, has high compressibility. Standard penetration test is 76 times, number of blows is 30-49 and average is 40.0 blows.    

(7-2)强风化混合岩(Z)

灰黄色、褐黄色, 岩芯呈坚硬土状, 半岩半土状, 原岩结构清晰, 遇水易软化, 岩块手可折断,裂隙发育。该层仅于局部地段揭露, 层厚1.60~27.00m, 顶板标高-16.64~18.68m。根据补勘土工试验揭示: 该层天然密度ρ=1.87～1.99g/cm3；压缩系数为0.26~0.51Mpa-1, Es 0.1~0.2=3.36～6.58MPa, 具高压缩性。标贯54次, 击数大于50击或反弹北京英语翻译。

(7-2) Strong weathered migmatite (Z)

It is grey and tan, rock core is hard earthy, half rock and half earth. Virgin rock structure is clear, easy to soften when wet, rock mass can be broken up by hand, fissure grows. The layer is only locally disclosed, layer thickness is 1.60~27.00m, elevation of top plate is -16.64~18.68m. In accordance with disclosure of geotechnical test of supplementary investigation, natural density of the layer isρ=1.87～1.99g/cm3；compression coefficient is 0.26~0.51Mpa-1, Es 0.1~0.2=3.36～6.58MPa, has high compressibility. Standard penetration test is 54 times, number of blows is larger than 50 or rebounce.

(7-3)中风化混合岩(Z)

黄褐色, 中细粒变晶结构, 块状构造, 主要组成矿物为长石、石英、云母, 裂隙较发育, 岩芯多呈碎块状、短柱状, 少量块状及柱状, 岩质较硬, 锤击声脆。分布在强风化层之下, 大部分钻孔揭露, 厚度0.50~15.80m, 顶板标高为-29.26～12.84m, 属硬质岩北京日语翻译。

 (7-3) Medium weathered migmatite (Z)

It is tan, medium-fine grained crystalloblastic texture, massive structure, main mineral composition is feldspar, quartz and mica, fissure grows, most of rock cores look like fragment and short column, a few of rock cores look like massive and columnar; rock is hard and hammer shot is crisp. It is distributed below the strong weathered layer, most of drilling holes are disclosed, thickness is 0.50~15.80m, elevation of top plate is -29.26～12.84m, belongs to hard rock.