岩石截割性能及可截割性分级研究

 摘要：鉴于现有岩石可截割性表示方法不能合理的指导掘进机的设计和选型并且岩石可截割性分级定义不明确，致使如今岩巷掘进机使用时截割比能耗大、粉尘量大等问题突出；基于岩石截割比能耗本文给出了岩石可截割性定义并解释了其三层含义，初步制定了岩石可截割性分级标准，分析表明用抗压强度计算岩石可截割性级值具有明显优势；给出了岩石坚固性系数分级与可截割性级值的大致对应关系；基于岩石可截割性的定义和级值标准，推导出了给定纵轴式掘进机可经济截割岩石可截割性级值的理论估算公式，为掘进机的选型和工作能力评估建立了理论依据。

Study on Rock cutting Performance and Cuttability Classification

Abstract: Because representation of rock cuttability can’t guide design and type selection of roadheader nowadays, and definition of rock cuttability classification isn’t specific, which result in high specific energy、amounts of dust. Based on specific energy, the definition of rock cuttability is given in the paper, and its three-meaning are also related. The criterion of rock cuttability classification is set in the paper; The result indicates that using the compressive strength to calculate cuttability has obvious advantages, and the corresponding values between rock cuttability and robustness coefficient are given in the paper; Based on the definition and class values of rock cuttability, calculation formula of he rock cuttability which longitudinal roadheader can cut economically is derived, a theoretical basis is established for selection of roadheader.