摘要
煤矿生产过程中,含水底鼓巷道治理是一大难题,新型耐水锚固剂的研发显得尤为重要。选取本身强度高,水域环境内能稳定引发固化的改性聚酯为主体,研制成功耐水锚固剂。并对耐水锚固剂抗拔力、不同孔径含水锚管内锚固力、普通锚固剂与耐水锚固剂抗拔力对比进行了试验研究。研究表明:耐水锚固剂水内锚固抗拔力达200k N以上;Φ45mm锚管内锚索锚固力均在150k N以上;Φ50mm锚管内锚索锚固力均在110k N以上;耐水锚固剂在100%积水率锚管内抗拔力平均值为196.3k N,优于普通锚固剂在积水率49%的锚固效果,高出2.86倍。新型耐水锚固剂工业性试验选取蒋家河煤矿二号采区回风大巷底鼓段,成功提高施工效率、缩短工期,减少了水对底板锚索锚固力降低的影响。
This paper studies the anchoring experiment of waterproof anchorage agent used for disposal of floor heave. The withdrawal resistance of waterproof anchorage agent, anchorage force inside of water-bearing anchorage pipe with different aperture, as well as the withdrawal resistance contrast between ordinary anchorage agent and waterproof anchorage agent are studied with self-made waterproof anchorage agent. The study shows that： the withdrawal resistance in water is above 200kN; the anchorage forces of anchor rope within qb45mm and qb50mm anchorage pipes are above 150kN and ll0kN respectively; the average withdrawal resistance within anchorage pipe with 100% water percentage is 196.3kN, the anchoring effect is 2. 86 times higher than that of ordinary anchorage agent with 49% water percentage. The new-type waterproof anchoring agent was successfully used on the floor heave section of air return tunnel of 2nd mining area of Jiangjiahe coal mine, which improved the construction efficiency, shortened the construction period, and reduced the influence on anchoring force of anchor rope reducing caused by water.
出处
《煤炭工程》
北大核心
2016年第8期43-45,49,共4页
Coal Engineering
基金
国家自然科学基金青年基金项目(51304119)
天地科技创新基金项目(KJ-2015-TDKC-08)
关键词
底鼓治理
耐水锚固剂
锚固效果
改性聚酯
floor heave disposal
waterproof anchorage agent
anchoring effect
modified polyester
