Page - 1299 - in Book of Full Papers - Symposium Hydro Engineering

COMMISSION INTERNATIONALE DES GRANDS BARRAGES ------- VINGT-SIXIÈME CONGRÈS DES GRANDS BARRAGES Autriche, juillet 2018 ------- KEY CONSTRUCTION TECHNOLOGY OF 300M HIGH CORE WALL ROCK-FILL DAM Wu GAOJIAN Chief engineer, SINOHYDRO BUREAU 5 CO., LTD Fan PENG Chief engineer of Branch Company, SINOHYDRO BUREAU 5 CO., LTD Han XING Assistant Chief engineer of Branch Company, SINOHYDRO BUREAU 5 CO., LTD CHINA ABSTRACT As the high rock-fill dam being constructed to 300m, the dam anti-seepage safety attracts much more attention. For the high rock-fill dam constructed at the place where the overburden is deep and the river valley is steep and narrow, the construction quality of foundation treatment, ant-seepage system and dam body filling becomes particularly important. The dam of Changheba Power Station is gravel soil core-wall rock-filling dam, which is construction on the deep overburden, with the dam height of 240m. The height of overburden and dam is 293m in total. The seismic intensity reaches 9 degree. For the above reasons, the control of dam deformation stability and seepage stability is very difficult and it requires high design index and construction quality standard. The deep scientific research was carried out for this project and it made plentiful achievements. This article briefly introduces the engineering characteristics and construction difficulties of 1299