Analysis of restoring test for feeding material to shaft in water delivery tunnel of Dahuofang reservoir;

This paper intreduces accuracy analysis of forward intersection determine shaft plumbing vertical and for shaft plumbing vertical error of point position or directional error carry through simple analysis.

The key problem of transporting system is that the pipeline in filling batching mine can t be plugged,or while plugging,it can be found timely and the transporting system on ground controlled to stop.

The most of shaft wells of TGP s permanent shiplock characterize as large section, shaft well group, double steel bar, and large amount of accurately embedded metal structure and especially for the lower shiplock chamber section, the structure is complicated and the steel bar is dense.

The outfall pressure shaft well in the third-step pumping station of main canal of Wanjiazhai Huanghe Water Transfer Project in Shanxi Province is lined with reinforced concrete and constructed by using hydraulic climbing form.

In order to protect the cast concrete at the shaft well section of the power tunnel against corrosion by several strong corrosive mediums,a protection project at the outer sidewall of the shaft well is needed.

Application of gyroscope in the directional silo measure;

Numerical Simulation of Fan Influence in Long and Large Road Double-silo Tunnel Intake and Exhaust Ventilation Mode;

The Protection Methods and Construction Techniques for Under Drain and Silo of Karez;