(1) Project Situation:

During the construction process, a large amount of water inrush occurred at the main and auxiliary inclined shafts. The water inrush volume was 80 m³/h at the 580m position of the main inclined shaft, and 120 m³/h at the 1273m position of the auxiliary inclined shaft. In order to comprehensively manage the water inrush situation in the boreholes, materials from Tongren Company of Taihe Group were used for grouting and leakage blocking. The following is a comparison of the main and auxiliary shafts before and after treatment.

Comparison of the Water Inrush Situation of the Main Shaft before and after the Occurrence

Comparison of the Water Inrush Situation of the Auxiliary Shaft before and after the Occurrence

(2) Material Usage Situation:

In response to the large amount of water inrush in the project, MidwestMGS - type materials were used for grouting and leakage blocking.