Shandong tunnel waterproof board quality special tape can be used to cross the border construction: Reason: the obstacles encountered when immersed tube card; plastic plates and steel boots is not securely connected; poor flapper machine reliability; small drainage channel, flow resistance coefficient large, resulting in greater head loss, treatment permeable membrane resistance with time rapidly lose water treatment effect; steel boots are not tight, cover not achieve the role of sediment into the hollow tube clogging. Shandong tunnel waterproof board quality special tape can be used to cross the border Construction: Quality and Prevention plastic drainage board: 1. plastic plate fixed is not strong, channel blockage, plastic sheeting fixed is not strong, the channel blocked. Reason: flapper obstacles encountered when immersed tube; plastic plate is not securely connected with steel boots; poor flapper machine reliability; small drainage channel, flow resistance coefficient, resulting in greater head loss, treatment with membrane permeable resistance time of rapid growth, the loss of water treatment effect; steel boots are not tight, cover not achieve the role of sediment into the hollow tube clogging. Control measures: encountered a hard object and pipes should be removed or displaced immersed tube; before construction should be closely connected with the steel shoe firm; improving the way plastic plate anchor; channel blocked again when the flapper. 2. The soil shear failure causes: plastic plate surcharge preloading, the pore water slowly dissipate; loading too fast, resulting in damage to the soil structure. Control measures: after ballast water should be void dissipate, before continuing to load; classifying load should not be too fast, too big. Chongqing drainage board price, roofing board wholesale price consulting, immediately call the hotline now!