English：

In order to study the interference of shield tunnel excavation on the surrounding strata ofexisting cable tunnels, numerical simulation was adopted based on the Taiyuan Metro Line 1 tunnelproject to analyze the changes of soil settlement during shield tunnel excavation under different net tunnelspacing and tunnel intersection angles, as well as the maximum settlement relationship of soil underdifferent tunnel intersection angles. The research results indicate that under the same intersection anglebetween subway shield tunnels and existing cable tunnels, as the net distance between subway shieldtunnels and existing cable tunnels increases, the soil settlement during shield tunnel excavation graduallydecreases. Under the same tunnel intersection angles, as the net distance between the two tunnelsincreases, the soil settlement during shield tunnel excavation gradually decreases. When the intersectionangle is 28°, the settlement is maximum, and when the intersection angle is 84°, the settlement isminimum. In shield tunneling projects, it is recommended to increase the net distance between twotunnels as much as possible, or choose the direction with a larger intersection angle for construction.