为了保证矿井顺利安全的揭开淮南矿业集团新庄孜矿B4煤层,根据矿井B4煤层赋存及突出危险性情况,进行了水力扩孔试验。通过对水力扩孔后的钻孔瓦斯流量、排出煤屑率、瓦斯抽排率钻孔等指标的考察以及揭煤过程中防突效果的验证,综合分析认为：水力扩孔技术在石门揭煤过程中可以提高钻孔瓦斯抽排效果,减少防突工程,加快石门揭煤速度。

通过对李嘴孜矿A1煤层突出危险预测方法和预测指标敏感性及其临界值的考察研究,确定出了李嘴孜A1煤层煤与瓦斯突出预测指标的敏感指标及其临界值.A1煤层突出预测敏感指标及其临界值的得出,能进一步提高矿井生产能力,为矿井的安全高效生产提供保障.

传统的无缆测井系统在钻孔中取得选择伽玛、自然伽玛及测斜资料等结果,必须分别用测井仪和测斜仪两套仪器进行测量,而改进后的测井系统使二者统一起来,可以一次取得所需结果。本文即对此进行详细介绍,并通过工程实地测量验证其实际应用效果。

通过对谢一矿C15煤层突出危险预测方法和预测指标临界值的现场试验研究,确定出谢一矿C15煤层不同地质单元煤与瓦斯突出预测指标的合理临界值。C15煤层突出预测指标合理临界值的应用,能进一步提高矿井生产能力,可为矿井的安全高效生产提供保障。

The leading seismic predication for tunnels is to predict by some means or methods the locations,characters and scales of unfavorable geological bodies or their boundaries in underground engineering construction and so to previde reliable basis for countermeasures to guarantee safe,quick and continous construction.This paper discusses the basic principles of the leading tunnel reflection seismic predication(TRSP),analyzes the characters of wave propagation,studies the optimum geometry system and summarizes the time-distance relations law of TRSP.A special data processing system named TRSP1.0 was developed,which includes function modules for wave form processing,forward numerical modeling targets imaging and extracting of lithologic parameters.Synthetic and real data have testified that good results may be acquired with this TRSP1.0.

Rayleigh wave detection is a new shallow earthquake detection method developed in recent years at home and aboard,and has been applied in many fields.This paper presents the detection principle of Rayleigh wave exploration technologies,and successfully used it on the advanced detecting technology to blinded leading.Exam-ples show that the detection range is over 80 m,and if conditions permit it can reach up to 100 m.