The invention discloses a construction method and structure of a dam
toe hydropower station workshop
retaining wall. The method is characterized in that after a foundation pit of a workshop is excavated, firstly, the workshop
retaining wall is constructed at the side, close to an earth and rockfill dam, of the foundation pit, an obstruction barrier is formed between the workshop and the earth and rockfill dam, and therefore the phenomenon that large construction rocks of the earth and rockfill dam roll into the foundation pit of the workshop, so that safety of the workshop structure and construction personnel is endangered is prevented. The workshop
retaining wall is constructed according to the following steps: A, concrete construction of a balance weight platform is performed; B, sloping core concrete construction is performed on the balance weight platform; and C, rock
ballast backfilling is performed on the upper portion of the balance weight platform and the outer side of the sloping core. The construction method and structure are set in combination with the retaining wall of the end of the workshop, the construction structure can be used as a permanent retention wall structure of the workshop, and
engineering investment is saved; a transportation channel is arranged in the wall and is connected with a construction
adit of a pressure steel
pipe, and construction of the pressure steel
pipe is facilitated; and rock
ballast backfilling is performed on the outer side of the wall, and therefore the wall can be connected with a workshop entering roadway, and the transportation problem for entering the workshop is solved. The construction method and structure have the prominent
advantage that multiple purposes of one wall are achieved,
water diversion lines are shortened, and project investment is saved.