Soil-rock binary foundation pit supporting structure system

The invention belongs to the technical field of foundation pit engineering, and particularly relates to a soil-rock binary foundation pit supporting structure system. The soil-rock binary foundation pit supporting structure system comprises a soil retaining structure and a plurality of anchor supporting members used for supporting the soil retaining structure. The soil retaining structure is an end-suspended pile or an end-suspended wall. The bottom of the soil retaining structure extends into a slightly-weathered rock stratum of a soil-rock binary foundation pit, no rock shoulder is fixedly embedded in the bottom of the soil retaining structure, and a reinforcing mesh sprayed concrete facing structure is arranged on the pit wall of the slightly-weathered rock stratum below the bottom faceof the soil retaining structure. The bottom of the soil retaining structure extends into the slightly-weathered rock stratum, self-stabilization of the pit wall of the slightly-weathered rock stratumis fully utilized, the mu