新型高分子泡沫堵漏材料试验研究及工程应用

针对煤矿井下破碎煤岩体力学强度低、可注性差的特点，以有机树脂为基料，配以交联剂、发泡剂等添加剂，制备一种黏度低、膨胀倍数适宜、固结体力学强度较高的新型高分子泡沫堵漏材料。通过研究不同发泡剂添加量对材料性能的影响以及材料凝胶特性变化规律，得到了材料各组分最佳配合比;并开展堵漏模拟实验，结果表明:该材料能够渗透至10 μm以下的细微裂隙，与煤体结合稳定，相对于传统堵漏材料，该材料具有优越的堵漏效果。工程试验结果表明，采用高分子泡沫堵漏材料对抽采钻孔进行堵漏处理后能够显著提高钻孔瓦斯抽采效果，延长了钻孔的抽采周期，具有广阔的工程应用前景。

Experimental study and application of new polymer foam plugging material

The fractured coal rocks in underground coal mine has a characteristic of low mechanical strength and poor pourability.A new polymer foam plugging material with the characteristics of low viscosity,proper expansion multiple and high mechanical strength of consolidation was developed,which used the organic resin as frame material,and added a little crosslinking agent,foaming agent and other additives.By studying the effect of different foaming agent additions on the performance of the material and the change characteristics of gel property,the optimum mixture ratio of each component of the plugging material was obtained.And then the plugging simulation experiments were also conducted,the results show that the plugging material can penetrate into the microfractures with the aperture below 10 μm and combine with coal mass stably,which has a significant plugging effect compared with the traditional materials.Finally,the engineering test results also show that the boreholes gas drainage effect has significantly improved by taking leakage treatment with the polymer foam plugging material,and it can prolong the drainage period of the boreholes,which has an extensive engineering application prospect.