隧道出口段至黄秀塘二号大桥之间,里程D2K62+582~D3K62+670,岩堆呈长条形,轴向为N33W,长轴约240m,横轴约98m,厚约25m,最厚28m。该段属构造剥蚀低中山地貌,地形起伏较大,地面横坡陡峻,自然坡度25~650。加固防护有抗滑桩、土钉墙、锚杆框架梁。
D2K62+602~D3K62+640.66段右侧长55.625m,设10根预锚固桩,D2K62+602~D3K62+638.935段左侧长52.275m,设15根抗滑桩。桩径及长度如下:线左:1#桩,3mx2m,桩长26.5m;
2#桩,3mx2m,桩长26.5m;
3#桩,3mx2m,桩长17.5m;
4#桩,3mx2m,桩长16.5m;
5#桩,2mx2.75m,桩长15m;
6#桩,2mx2.75m,桩长16m;
7#桩,2mx2.75m,桩长17.5m;
8#桩,2mx2.75m,桩长20m;
9#桩,2mx2.75m,桩长22.5m;
10#桩,2mx2.75m,桩长25.5m;
11#桩,2mx2.75m,桩长26.5m;
12#桩,2mx2.75m,桩长26m;
13#桩,2mx2.75m,桩长28m;
14#桩,2mx2.75m,桩长28.5m;
15#桩,2mx2.75m,桩长28.5m;
线右:1#桩,2.75mx1.75m,桩长24.5m;
2#桩,2.75mx1.75m,桩长24.5m;
3#桩,3mx2m,桩长28m;
4#桩,3mx2m,桩长28m;
5#桩,2.75mx1.75m,桩长26m;
6#桩,2.75mx1.75m,桩长26m;
7#桩,2.75mx1.75m,桩长26m;
8#桩,2.75mx1.75m,桩长26m;
9#桩,2.5mx1.5m,桩长23.5m;
10#桩,2.5mx1.5m,桩长21.5m;



