TEST BORES EXPOSE TUNNELING TROUBLES

摘要

A $2 million test tunnel project in California has confirmed that microtunneling methods will be ineffective for installing interceptor sewer pipe in heavily cobbled soil. The tests helped the Sacramento Regional County Sanitation District (SRCSD) sidestep potentially serious project delays and legal squabbles with contractors on its 14,000 ft, $23 million Folsom East Section 2 interceptor project.