Rock-gas outbursts, including sandstone-gas outbursts, become more and more serious with increasing depth of engineering and more difficult geological environments and their prediction and prevention are one of the major challenges to the rock mechanics and rock engineering community. Comparatively speaking, sandstone-gas outbursts have not been well studied and are less documented than coal-gas outbursts. So the exchange of information, especially in the field of the prediction and prevention of sandstone-gas outbursts, is important. This paper outlines an outburst in which over 2000 tonnes of oil-bearing sandstone were ejected with 900,000m3 of gas in the air shaft of Haishiwan Colliery; this is the largest sandstone-gas outburst in China to date. The theoretical and technical investigation relating to the prediction and prevention of such sandstone-gas outbursts, taking the Haishiwan Colliery project as the background, are described in the paper. A comprehensive prediction method employing a suite of macro-and micro-indices gained from test drilling and laboratory testing on rock cores is proposed in the paper. It is found that the combination and comparison of the results of field observations, measurements and laboratory tests are helpful to ensure the reliability of outburst prediction. The principle and scheme of preventive drilling and discharging, including the pattern and number of releasing boreholes and the safety distance for drilling, were studied. It is revealed that discharging of gas can also release rock mass strain energy, which should be taken into consideration in the determination of the number of releasing boreholes. For the purpose of releasing, the Tubular Destressed and Depressurized Protective Zone (TDDPZ) pattern proposed in the paper is more efficient and economical than the currently applied fan-shaped pattern of releasing boreholes. The accuracy of prediction and the efficiency of the preventive measures were verified by successful excavation through the oil-and gas-bearing sandstone units in Haishiwan Colliery.

钻孔、巷硐周围流体压力的分布和变化对围岩变形和应力状态有着显著影响。但这是一个涉及多个变量、多种响应的动态耦合过程，尚无法用解析法解算。孔硐周围的流体压力的动态变化又难以实现物理模拟。以钻孔排放瓦斯为例，通过数值模拟，结合宏观观测结果和微观机制的分析，对其规律和一些工程现象与措施的机理作了初步分析。

工程地质勘察监理，不同于施工监理或设计监理，在我国尚处于探索阶段。由于地铁工程勘察的复杂性和高要求，为保证高效、优质完成勘察任务，开展监理工作十分必要。本文结合作者在南京地铁工程勘察监理工作的探索，探讨了监理的任务、依据、程序和主要内容，分析了地铁工程勘察监理的特点、宜遵循的原则以及监控的关键与要点。

地下工程常常面临突水灾害的威胁。除了采动破裂导致岩层阻水能力丧失外，剪应力集中区内结构面错动引起地下水的导升亦是突水发生的重要机制。围岩的层状特征和岩性差异，使得某些位置的软（硬）岩层成为控稳优势层。以突水系数等经验方法为参照，通过对优势层及其组合特征的分析，明确其有利或不利的控稳机制，可为突水防治提供更为科学、可靠的依据. 图5，表2，参13。

断层突水事故中，大多是原始地质条件下的非导水断层在采动影响下发生突水。借助数值模拟，并结合大量工程事例分析。对断裂变形活化与导水机制进了分析研究发现，断裂变形活化与导水具有明显的时空效应。对时空效应的充分认识可为科学的工程设计和施工组织以及有效的超前探测和工程监测提供依据。