The construction engineering company of Jixi nsed the measure of pour oar behind wall,Fills empty cavity behind wall,blockade water behind the well, Reinforce stratum,prevent destruction lf the well wall suddenly,The percentage of the blockading water achieved 86%,Obtain a better effect.

1.Analysis of Operative Treatment for Posterior Wall Fractures of the Acetabulum 2.Computer-assisted Hip Joint Contact Area Measurement Based on Postoperative CT Scan: Its Preliminary Application in Acetabular Fractures;

By using the combined support technology of concrete sprayed anchored net,anchorage cable and backwall grouting in the mechanical and electronic underground chamber of Shuangmiao extending area of Gedian Mine,Shenhuo Coal and Electricity Joint-stock Company,the tunnel condition is effectively improved,the deformation of the surrounding rock is inhibited.

This paper introduced backwall grouting process and grouting effect of-290 level downcast shaft in Jilongshan Gold Mine.

The implementation of backfilling is an effectivemethod to improve the loading condition of support.

For the characteristics of broken surrounding rocks located at Henan Dengcao coal mine and on the basis of analyzing large deformation,backfilling,bolting and bolt-grouting coupling support method were adopted to reinforce the roadway.