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钻孔电视测试和声波测试作为定量或准定量的测试手段,可为岩体质量评价提供准确的数据,已被广泛应用于地下工程勘察中。在某拟建地下水封洞库选址勘察中,对拟选库址区布置的两个钻孔进行了钻孔电视测试和声波测试,获取了大量有效可视的钻孔岩芯定量数据和岩体波速数据。通过数理统计的方法对这些测试数据进行了分析,并运用改进的地下水封洞库岩体质量分级体系(UWCQ)对钻孔深部岩体质量进行了初步评价,评价结果可为洞库选址和后续设计提供重要决策依据。
As a quantitative or quasi-quantitative testing method, borehole television testing and acoustic testing can provide accurate data for rock mass quality evaluation and have been widely used in underground engineering investigation. In a proposed site investigation of groundwater sealing cavern, two boreholes arranged in the proposed reservoir area were tested by borehole testing and acoustic testing, and a large number of effective and validated core drilling data and rocks Body velocity data. These test data were analyzed by mathematical statistics. The quality of rock mass in deep borehole was preliminarily evaluated by using improved UWCQ. The result of the evaluation can be as follows: Follow-up design provides an important basis for decision-making.