The misfire causes in coal mine blasting are analyzed. Based on the "coal mine safety regulation" and "blasting safety regulations", the preventing and handling measures are put forward.

综合分析了煤矿井下爆破作业中产生拒爆的主要原因，并根据《煤矿安全规程》和《爆破安全规程》提出了预防拒爆的措施以及正确处理拒爆的办法。

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Abstract: with the mine production mechanization degree unceasing enhancement, as a traditional method of coal blasting fall coal mining machinery has gradually be replaced.

摘要：随着煤矿生产机械化程度的不断提高，作为传统采煤方法的爆破落煤已逐渐被机械采煤所代替。

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This paper introduced the principle and method of protecting borehole wall blasting and its application in the Dongxia and Weifang coal mine.

本文介绍了护壁爆破原理和方法以及其在东峡煤矿、潍坊煤矿的应用情况。

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