Super-high backfill open hole structure for strengthening lateral restraint and construction method thereof
The invention discloses a super-high backfill open hole structure for strengthening lateral restraint and a construction method thereof. The super-high backfill open hole structure includes an open hole, the open hole includes side walls and an arch ring, the upper part of the open hole is backfille...
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Format: | Patent |
Sprache: | chi ; eng |
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