复合膨胀材料研发及其在瓦斯抽采中应用的试验研究

doi:10.16265/j.cnki.issn1003-3033.2017.12.015

中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (12): 86-90.doi: 10.16265/j.cnki.issn1003-3033.2017.12.015

复合膨胀材料研发及其在瓦斯抽采中应用的试验研究

任青山副教授, 艾德春教授, 郭明涛副教授

六盘水师范学院矿业与土木工程学院,贵州六盘水 553004

收稿日期:2017-09-13 修回日期:2017-11-14 出版日期:2017-12-28 发布日期:2020-10-10
作者简介:任青山 (1984—),男,河南新蔡人,硕士,副教授,主要从事矿井通风、瓦斯防治方面的研究。E-mail:307859715@qq.com。
基金资助:
六盘水市科技计划项目(52020-2017-02-09);贵州省教育厅基金资助(黔教合KY字[2015]398);贵州省教育厅“125”重大科技专项(黔教合重大专项字[2012]017号)。

Preparation of composite expansion material and its application in methane drainage

REN Qingshan, AI Dechun, GUO Mingtao

Mining and Civil Engineering College, Liupanshui Normal University, Liupanshui Guizhou 553004,China

Received:2017-09-13 Revised:2017-11-14 Online:2017-12-28 Published:2020-10-10

摘要/Abstract

摘要： 为提高瓦斯抽采钻孔的密封效果,通过普通硅酸盐水泥、硫铝酸钙水泥、自制高倍率膨胀剂等材料的复配,研发出一种膨胀率高、速凝、高强度的钻孔密封材料。实验室测试材料的流动度、凝固时间、抗压强度等性能指标;在井下现场同常见的钻孔密封材料开展钻孔密封的对比试验。实验室测试结果表明:该材料适合瓦斯抽采钻孔的密封;在井下穿层钻孔密封试验中,该材料密封的钻孔比应用马丽散材料密封的钻孔瓦斯抽采体积分数可提高18%～24%,抽采速率可提高50%～80%。井下顺层钻孔密封试验结果表明:使用该材料,在2个月内平均瓦斯抽采体积分数达71.3%,比普通硅酸盐水泥密封的钻孔平均提高约17.4%。

关键词: 钻孔密封, 穿层钻孔, 钙矾石, 瓦斯体积分数, 马丽散

Abstract: To improve the sealing effect of gas-pumped drilling, a kind of drilling sealing material with high swelling rate, rapid coagulation and high strength was developed by mixing portland cement, calcium sulphoaluminate cement and a self-made high-rate expansion agent. The data on the fluidity, solidification time and compressive strength of the material were obtained in the laboratory. Borehole seal comparison experiments were carried out between the material and the common borehole sealing material (marithan). The results show that in comparison with the marithan, use of the material increases the volume fraction of methane by 18%-24%, the pumping rate by 50%-80%, among others.

Key words: borehole seal, crossing hole, ettringite, gas concentration, marithan

中图分类号:

X936

任青山, 艾德春, 郭明涛. 复合膨胀材料研发及其在瓦斯抽采中应用的试验研究[J]. 中国安全科学学报, 2017, 27(12): 86-90.

REN Qingshan, AI Dechun, GUO Mingtao. Preparation of composite expansion material and its application in methane drainage[J]. China Safety Science Journal, 2017, 27(12): 86-90.

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复合膨胀材料研发及其在瓦斯抽采中应用的试验研究

Preparation of composite expansion material and its application in methane drainage

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