由于项目部对环境保护的重视和业主对环境保护方面的严格要求，在项目合同签订初期，项目部与业主签订了环境保护（主要为白海豚保护）承诺书，承诺盾构机掘进产生的不能循环使用的泥浆全部进行处理，不向南海排放（弃浆零排放）。为了解决剩余泥浆的排放问题，台山核电取水隧洞项目部在理论研究的基础上，结合以往其他项目的施工经验，对泥水系统进行了合理的改进，引入了新型的泥水和压滤设备，从而实现在掘进弃浆零排放的前提下盾构机的快速掘进，既能加快施工进度，又能有效地保护环境，保证了工程的绿色环保和生产高效。

As a result of the great importance attached to environmental protection by contractor and the high requirements on environmental protection of owner, an agreement on environmental protection, especially for souse chinensis, is signed shortly after the signing of project contract between the two parties. In terms of the agreement, the produced waste slurry during shield tunneling cannot be discharged into South China Sea. In order to satisfy the terms in the signed environmental protection agreement, shield slurry system is improved and new types slurry and pressure filter are used in headrace tunnel construction of Taishan nuclear power station according to theory study and construction experiences of previous projects. The construction experiences of Taishan headrace tunnel show that rapid tunneling and effective environmental protection can be achieved on the premise of zero waste slurry discharging to South China Sea, by the above improved construction technologies. 