摘要
为了阻止我国煤矿老空水害事故的发生和蔓延,开展了快速自建移动水闸墙的模拟实验研究。实验以1∶100的比例,分别用固体、液体材料对巷道中有无皮带架的条件下进行了正交模拟水闸墙快速、自动建筑实验。实验获得了液体充填材料的水闸墙生效时间为36 s~185 s、膨胀压力为1.03~1.2 MPa、堵水率为78%~99%,固体充填材料的水闸墙生效时间为185 s~240 s、膨胀压力为0.52~0.65 MPa、堵水率为70%~83%的重要数据。分析了实验效果和影响因素,探讨了该技术的实用性和适用条件。实验对比研究表明:以液体为充填材料的水闸墙堵水效果好于固体;无皮带架巷道水闸墙的堵水效果明显好于有皮带架的。
To prevent the occurrence and spread of goaf water accidents in coal mine,the analogue experiments were conducted on instant and automatic construction of mobile floodgate wall( MFW). Under the conditions with or without Belt Rack,the orthogonal simulation experiments with 1: 100 ratio of real conditions in the roadway on instant and automatic construction were done by filling in solid or liquid materials. Two groups of the important data were obtained from the experiment: the effective time of MFW filled in the liquid material is 36 ~ 185 s,the expansion pressure is 1. 03 ~ 1. 2MPa,the water plugging rate is 78% ~ 99%; the effective time of MFW filled in the solid material is 185 ~ 240 s,the expansion pressure is 0. 52 ~ 0. 65 MPa,the water plugging rate is 70% ~ 83%. The influencing factors on the experimental results were analyzed and the practical and applicable conditions of the technology were discussed. Comparison of the two groups of the data shows that MFW filled in liquid material is better in water plugging effect than that filled in solid material; water plugging effect of MFW under the condition without the belt rack is better than that with belt rack.
引文
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