Application of GPR Underground Pipeline Detection Technology in Urban Complex Geological Environments

Table 1

Location of underground pipelines in section α.

Line number	α-1	α-2	α-3	α-4
The top of underground pipeline is at the horizontal position of the survey line (m)	0.796	4.473	2.577	0.945
The underground pipeline is located at the horizontal position of the survey line (m)	0.419 to 0.842	4.019 to 4.968	2.037 to 3.135	4.165 to 5.519
Buried depth of underground pipeline from ground (m)	1.379	1.069	1.387	1.037
Width of underground pipeline (m)	0.842	0.949	1.098	0.968