As result of backward equipment and wrong operation, the forecast results become unreliable when the index of drilling yields is used in forecasting coal or rock outburst.

用钻屑量指标预测煤与瓦斯突出时，由于采样装置落后和操作不规范等原因，导致预测结果可靠性降低。

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Coal (rock) and gas outburst is one of intense natural disaster, is also a complicated and dynamical phenomenon, caused by stress, gas pressure of coal bed as well as coal structure.

煤(岩)与瓦斯突出是煤矿严重的自然灾害之一，且是一种复杂的动力现象，是地应力、煤层中的瓦斯压力和煤的结构力学性质综合作用的结果。

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The ground stress surveying, rock mass deformation monitoring in Erlangshan tunnel, and study of the characteristics, influence factors of water outburst in Huayingshan tunnel are presented.

概述了二郎山隧道地应力场、岩爆及围岩变形的监测预报，并对华蓥山隧道岩溶涌突水的特征、原因及对隧道的影响进行了研究；

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