Based on such special geological conditions and big section chamber construction,conform the rational construction scheme and permanent support form by comparing schemes and optimizing permanent support form,and achieve the construction of safety,high quality and speediness.

The text introduce the properties of wet-process steel-fiber concrete,and discuss the applied in temporary and permanent support.

Finally,the checking standard for permanent supporting structure is presented combing with related specifications.

Design of the shotcrete support for the underground powerhouse of Longtan Hydropower Station;

Variation characteristics of tunnel adjacent rock and shotcrete rockbolt support action;

The smooth blasting is the basic condition of the shotcrete rockbolt support, and is the fundamental work for guaranteeing the quality of the shotcrete rockbolt.

This paper makes deep analysis on the problems existing in the actual application of the bolt-spray supports in the sinking and driving engineering, and puts forward some methods and measures for solving these problems.

This paper sketches the popularization and application of the technique of smooth-wall blasting and bolt-spray supports in the tunnels of coal mines, and analyses the economic benefit obtained by popularizing and applying this technique in coal mines.

This paper presents the structure, function, and design method of the software package of a quality management information system of bolt-spray supports engineering.