In this article,the application of bolt supporting in the roadway repaire of Daoqing Coal Mine is briefly elaborated.

By the research on the roadway repair at 200 meters from up and down connecting point(location on Niubizi) of the second middle station of 82 down side track in Xutuan Coal Mine,puts forward the different combined support plan in accordance with the actual situation at various locations.

Mechanical properties of tubular textile composite material for pipeline rehabilitation;

Structure design of the tubular nonwoven composite material applied on pipeline rehabilitation

The principle, installation method, technological advantages, application fields and gas pipeline rehabilitation projects of the location sealing technique with Re-III grouting sleeves are explained.

Based on field monitoring and analytical study, the article discusses the cause of laneway damage and presents that the anchor rope supporting can be applied to solve the key technical problems of laneway maintenance and gain a good effect.

Application of grout and bolting-grouting support technique in the repairing tunnel;

The soft rock tunnel pin timbering and injection support mechanics and the application in the repairing tunnel;

Combined with the deforming and damage way feature of the typical repairing tunnel in a certain coal mine,the bolting-grouting scheme of repairing tunnel is designed,and the site monitoring analysis and estimating are also accomplished.