Drainage and backfilling work in Section 4-4 of Section III has been suspended. At present, Hazens has entrusted a third party to conduct geotechnical survey to determine more economical and reasonable technical treatment measures;
The drainage and backfilling work of the 4-4 section of the third standard section has been suspended, and the third party is currently entrusting a geotechnical survey in order to determine more economical and reasonable technical treatment measures;
At present, Hezheng entrusts a third party to conduct geotechnical investigation, so as to determine more economic and reasonable technical treatment measures;<br>