Protecting trolley and construction method of rock burst prewarning protection system in non-contact tunnel construction

A protecting trolley comprising:

• a framework, a walking assembly, a rockfall buffering assembly, a spraying assembly, an emergency refuge assembly, an auxiliary supporting device and a rock burst prewarning system;
• the walking assembly is fixed on a bottom of the framework, serving as a driving source for movement of the framework;
• the rockfall buffering assembly comprises an arch frame in a fixed connection with the framework and a protecting net fixed on the arch frame, there are at least two arch frames stretching across the framework, two ends of the arch frame are disposed on two sides of the framework respectively, two sides of the protecting net are connected to two arch frames respectively, and the protecting net naturally subsides or draws close in the direction towards the framework due to self-gravity;
• the protecting net comprises a receiving net, each side of the receiving net is fixed between two sides of the protecting net, the receiving net is positioned on the side of the protecting net sinking or closing to the framework, there are two impact resistant nets, which are fixedly connected on two sides of the protecting net respectively, each side of the receiving net is positioned between two sides of the corresponding impact resistant net, the receiving net and the impact resistant net are positioned on two surfaces of the protecting net respectively, and the impact resistant net and the receiving net are both abutted to the protecting net;
• each side of the impact resistant net is positioned between two sides of the protecting net;
• the spraying assembly comprises a track car in connection with the rockfall buffering assembly and a spraying hose fixed on the track car, and the spraying hose sprays towards the surrounding rock;
• the emergency refuge assembly comprises a protecting plate fixed on the framework, an oxygen supply device fixed on the protecting plate and a fixing component fixed on the protecting plate, the protecting plate is inverted L-shaped and forms a space for accommodating personnel together with the framework, the fixing component comprises two fixing rods in a hinge joint with the protecting plate via damping hinge, and a space for a refugee head to pass through is reserved between the two fixing rods;
• the auxiliary supporting device comprises a hydraulic cylinder fixed on the bottom of the framework and an abutting plate fixed on the end of the piston rod of the hydraulic cylinder, the abutting plate is disposed facing away from the framework;
• the rock burst prewarning assembly comprises a thermosensitive infrared sensor used for detecting the temperature of the surrounding rock and a highly sensitive laser sensor used for detecting the deformation of the surrounding rock.