Multi-passage concrete trolley for weak surrounding rock tunnel benching stepping method construction

• Main Authors: DOU JIANWEI, HOU HAILIN, WANG HAIFENG, LIU JIANJIA, LEI JUN, WANG QISHENG
• Format: Patent
• Language: Chinese; English
• Published: 23.10.2013
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

The invention relates to concrete jetting equipment, in particular to a multi-passage concrete trolley for weak surrounding rock tunnel benching stepping method construction, which solves the problem that conventional various concrete trolleys cannot satisfy the requirement of weak surrounding rock multi-step tunnel construction, and comprises a vehicle body, a folding telescopic arm frame, a concrete delivery pump, at least three rapid setting admixture delivery pipes and at least three high pressure wind delivery pipes, wherein a multi-passage distributor is arranged at the outlet of a concrete delivery hard pipe, the structure of the multi-passage distributor is composed of a main passage, tributary passages and high pressure wind branch pipes; a lengthening concrete delivery hose I and a lengthening concrete delivery hose II are connected with the outlet of each tributary passage, the connection parts of each lightening concrete delivery hose I and each lightening concrete delivery hose II are communicate