It is concluded that the shotcreting-bolting support is a effective measure guarding against initial caving.
认为采用喷锚支护是防止其初始冒落的有效措施。
We also introduced statistical way to analyze the strata in the initial roof caving and carried out reasonable classification.
采用统计学的方法进行了矿压分析和总结，根据初次放顶顶板情况进行了合理分类。
We also introduced statistical way to analyze the strata in the initial roof caving and carried out reasonable classification.
采用统计学的方法进行了矿压分析和总结，根据初次放顶顶板情况进行了合理分类。
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