Abstract
With large number of municipal solid waste incineration power generation plants appearing, serious environmental pollution will be caused if temperature cracks appear in waste bunkers. To reveal the interaction between the surrounding soil and bunker walls under the action of temperature, a finite element model is established. Considering the surrounding soil layer, the characteristics and influence laws of the interaction between the municipal solid waste bunker and the soil under different temperature conditions are studied. The simulation results show that the existence of the surrounding soil layer will affect the stress distribution, mainly at the bottom of the bunker and the surface of the bunker wall. Due to the thermal expansion and contraction, the municipal solid waste bunker is pressed during the heating process. In the process of cooling, there will be excessive tensile stress at the bottom of the bunker. To address this problem, expansion belt is arranged at the stress concentration portion to reduce the stress concentration. This measure proves to be effective according to analysis results, which provides a reference for the design of municipal solid waste bunkers.
Highlights
With the rapid development of social economy and the increasing population, the speed of urbanization is rapidly progressing
A large number of municipal solid waste (MSW) incineration power generation plants appear, and it will cause serious environmental pollution when cracks appear in waste bunkers
The stress in the part above ground level is the tensile stress and the maximum is 1.58 MPa, which is mainly because thermal expansion and contraction of the concrete is subjected to the confinement of the surrounding soil
Summary
With the rapid development of social economy and the increasing population, the speed of urbanization is rapidly progressing. The current urban waste treatment methods mainly include sanitary landfill, high temperature composting and incineration. High temperature composting is another waste treatment method. The method has the advantages that the high temperature is harmless, the occupied area is not large, the influence on the surrounding environment is small, and the heat generated by the garbage incineration can be used for power generation, realizing waste resource utilization and saving energy. TEMPERATURE STRESS OF WASTE BUNKER IN MUNICIPAL SOLID WASTE INCINERATION POWER GENERATION PLANT. A large number of municipal solid waste (MSW) incineration power generation plants appear, and it will cause serious environmental pollution when cracks appear in waste bunkers. Preventing cracks in the MSW incinerator under the action of temperature and propose improvement measures to ensure safety is an important research content. The improvement measures are proposed, and the stress before and after improvement is compared to provide reference for the design of the MSW bunker
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