This paper discusses the support mechanism of blot shotcrete mesh in soft rock and raises the support object in soft rock.

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.

Methods of improving the result of bolting and shotcreting;

Analysis of factors effecting quality of bolting and shotcreting;

Calculating the parameters of bolting and shotcreting with full-length-cemented bolt;