Optimization Study of Fluffy Materials Flocking Drainage Pipes to Resist Blockage Based on MD Binding Energy

Drainage pipe blockage resulting from crystals is one of the causes for cracking and leakage tunnel lining. Therefore, effective prevention drainage caused by crucial to ensure safety stability lining structures during operation system. Based on a large number indoor model tests numerical simulation analyses, binding energy between four materials calcium carbonate aqueous solution (“solid + liquid” system) that two typical growth solid” were studied. The research results indicated that: (1) all had an adsorption effect system, PA6 greatest while PP smallest effect; (2) There was spontaneous PVC or no SiC unless external in place; (3) can be used as flocking, but it shall ensured fluffy material has good geometrical property. technology crystallization fills gap crystals, which reduce maintenance cost system safe normal tunnel.