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2022
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Invention
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Blast hole arrangement structure used for blasting for rheological soft-weak surrounding rock tun... |
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Invention
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Piston-type explosive loading and blasting structure and method for hard rock cable pit. Provided... |
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Invention
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Concrete-spraying system for underground construction of ultra-deep vertical shaft and method for... |
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Invention
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Drainage system and drainage method for use in digging process of ultra-deep vertical shaft. A dr... |
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2021
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Invention
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Reinforcement system at railway tunnel section passing through karst cave with large dip angle an... |
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2019
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Invention
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Hosting method for heavy apparatus close to unsealed building. Disclosed is a hosting method for ... |
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Invention
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Foundation reinforcement structure and method for hoisting heavy equipment close to unclosed buil... |
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Invention
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Bailey support system applied to cross protection of complex pipes and cables and construction me... |
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Invention
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Bailey support system applied to crossed protection of complicated pipe cable and construction me... |
