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Mine Engineering 2023
爆破扰动作用下地下水封洞室围岩动力响应
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Abstract:
地下水封洞室爆破开挖期间，通常要考虑爆破对洞室附近围岩的扰动影响，洞室爆破开挖对围岩的扰动影响成为威胁地下水封洞室围岩稳定性的重要因素。本文以地下水封洞室工程中施工巷道为研究背景，结合项目工程地质条件与现场爆破方案，获取爆破时程动力曲线，并选取施工巷道最危险横断面作为研究对象进行爆破数值模拟，分析该断面工况下爆破扰动机制，并将其运用到围岩稳定性分析中。
During the excavation of underground water-sealed cavern, the disturbance effect of blasting on surrounding rock near the cavern is usually considered which becomes an important factor threatening the stability of surrounding rock of underground water-sealed cavern. This paper takes the construction roadway in the underground water-sealed cavern project as the research background, combines the engineering geological conditions of the project and the site blasting scheme, obtains the blasting time-history dynamic curve, selects the most dangerous cross section of the construction roadway as the research object for blasting numerical simulation, analyzes the blasting disturbance mechanism under the working condition of this section, and applies it to the stability analysis of surrounding rock.
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