Deep beneath the surface of western China, mine shafts are being sunk through water-saturated, weakly cemented rock strata at depths approaching and exceeding one kilometer. The concrete linings that hold these shafts open face a punishing combination of forces: intense surrounding rock stress, high pore water pressure, heat released during cement hydration, temperature shrinkage, and […]
Deep beneath the surface of western China, mine shafts are being sunk through water-saturated, weakly cemented rock strata at depths approaching and exceeding one kilometer.
The concrete linings that hold these shafts open face a punishing combination of forces: intense surrounding rock stress, high pore water pressure, heat released during cement hydration, temperature...
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Deep beneath the surface of western China, mine shafts are being sunk through water-saturated, weakly cemented rock strata at depths approaching and exceeding one kilometer. The concrete linings that hold these shafts open face a punishing combination of forces: intense surrounding rock stress, high pore water pressure, heat released during cement hydration, temperature shrinkage, and […]
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