Slope project is often appearing in rock and soil engineering such as water conservancy, mine, highway and railway etc. And deposit slope is a special natural one. For probing into slope failure mechanism and prestressing loss of anchorage cable in deposit body, this paper researches it by numerical simulation. Study result shows: First, three leading influence factors, which are deposit slope lithology and structure, in-situ stress, and groundwater, may induce slope failure; Second, slope failure patterns chiefly includes landslide along the interface between bed rock and deposit, and part circular slippage in shallow deposit body; Last, it appears prestressing positive loss and negative loss of anchorage cable in study area, especially the latter occurs because of the slide interface existing in deposit body, and changing technical parameters of anchorage cable can partly improve prestressing loss.

The paper reports how to use quartz tail-sands to produce aerated concrete block. Through studying hydro-thermal synthesis reaction, gas-forming and performance analysis, satisfied mix ratios and optimal technical parameters are set successfully. The results show that utilizing quartz tail-sands can make aerated concrete production which is in accord with Chinese national standards. It fully reflects the requirements of environmental benefits and building energy efficiency.