新型防排水系统在曲奥隧道中的应用研究OA

In order to improve the performance of tunnel waterproofing and drainage systems under defects such as blind pipe blockage and waterproof board cracking,a composite waterproofing and drainage system was designed,and indoor model tests and on-site application monitoring tests were conducted.The research results show that,compared to traditional water-proofing and drainage systems,composite waterproofing and drainage systems show varying degrees of water-pressure reduction under normal drainge conditions,unilateral blockage of blind pipes,circumferential blockage of blind pipes,complete block-age of blind pipes,and cracking of waterproof boards.Especially after the blind pipes are completely blocked,their drainage performance remains basically unaffected.However,when the drainage outlet is blocked by 25％,the drainage function of tra-ditional waterproofing and drainage systems is compromised.The composite waterproofing and drainage system can reduce the stress on the lining structure,reduce lining cracking and water leakage.Capillary drainage boards particularly more suit-able for composite waterproofing and drainage systems.