Earthwork standard room reinforcement high-and-deep slope and construction method thereof

The invention discloses an earthwork standard room reinforcement high-and-deep slope and a construction method thereof. The construction method comprises the following steps of firstly, excavating a basement, mixing cement and sand gravels, and carrying out pouring to form a foundation layer; secondly, spreading an earthwork standard room on the foundation, and filling the earthwork standard roomwith cement and sand gravels; thirdly, carrying out earth filling with a loader after carrying out filling of each layer of filler; fourthly, backwards shrinking the earthwork standard room for ten centimeters after every layer is added upwards, spreading another earthwork standard room on a cement and gravel layer, filling the earthwork stand room with sand gravels which are used as a wall body drainage layer, and filling the earthwork stand room with one sand gravel drainage layer every two centimeters in the earthwork standard room upwards from the wall body drainage layer; fifthly, arranging first lacing girdles a