Anticonvulsants
发表于 2025-3-26 23:42:19
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paleolithic
发表于 2025-3-27 01:37:55
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轻快来事
发表于 2025-3-27 07:14:28
Mechanical Properties Test on the Basic Components of New High Strength Arches,he deformation of the basic components with grouting hole, and the reasonable reinforcement scheme is obtained by comparison and selection. Through the series of tests on the casing joints, the effect of different factors is clarified on the mechanical properties of the joints.
Mitigate
发表于 2025-3-27 09:39:19
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小官
发表于 2025-3-27 16:22:12
Engineering Practice of New High Strength Support System in Deep Roadways with High Stress, test on-site, our study verifies that the SQCC support is very effective on the surrounding rock control. This research could provide references for solving the support problem of roadways with high stress.
animated
发表于 2025-3-27 17:47:17
Introduction,iencing a rapid development to meet the growing demand for coal. As the most abundant fossil fuel in the world, coal resource is rich. According to the statistics from the BP Statistical Review of World Energy, UK (.), the total proved coal reserves are 1.055 trillion tons worldwide in 2018, and about three times the oil and natural gas reserves.
Fretful
发表于 2025-3-28 00:28:53
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Nonporous
发表于 2025-3-28 04:51:45
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CUMB
发表于 2025-3-28 09:14:54
https://doi.org/10.1007/978-981-15-3844-5Underground engineering; Confined concrete support technology; High-strength support; Surrounding rock