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TEXTING STUDY ON MOVEMENT PROCESS OF ROCK PIECES IN CUT CAVITY BY X–RAY PHOTOGRAPH
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Abstract The cut is major factor to affect tunnel blast. The movement process of rock pieces in cut cavity is a theory base for cut blast mechanism and the parameter design. Rocks are non-transparency and brittle. It is difficult to simulate the movement of rock pieces in cut cavity by math and physics. X-ray is of strong penetration ability. It is possible to use high-speed X-ray photograph to survey insitaneous change process in rock body. The mechanism of parallel cut blast with empty holes is studied with model testing and high-speed X-ray photograph. The movement situation of rock pieces in cut cavity is gained. At the same time the study develops a new way to survey the insitaneous change process in rock body and the other non-transparency brittle medium.
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Received: 19 February 2002
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MAO Yuting1, 2, HE Manchao1, 2, LIU Fangzhou3, BAI Xing4, YANG Xiaojie1, 2, TAO Zhigang1, 2*. Development and application of a large-scale physical model system for tunnel creep testing[J]. , 2026, 45(6): 1627-1638. |
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