Muck dripping, splashing and leaking are commonly encountered in plastic muck loading and transporting and are harmful to road quality. Especially, the plastic muck excavated by EPB shield in urban projects, after conditioning with water and foam in shield chamber, will inevitably stain road in construction site and city. In addition, frequently washing of the stained road may consume much water, congest urban sewer and induce urban water pollution. In order to completely tackle the above problems, a new technology is developed in tunnel excavation, including automatic muck hopper and improved sealing technology for truck. Construction experiences shows that this new technology can essentially settle environmental pollution during muck loading and transporting and provide references for tackling environmental pollution of muck.