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[1]程志恒,卢云,李海涛,等.高位钻孔不同封孔方法质量检测及其优选[J].中国安全生产科学技术,2020,16(6):61-67.[doi:10.11731/j.issn.1673-193x.2020.06.010]
　CHENG Zhiheng,LU Yun,LI Haitao,et al.Quality inspection and optimization of different sealing methods for highlevel borehole[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2020,16(6):61-67.[doi:10.11731/j.issn.1673-193x.2020.06.010]
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高位钻孔不同封孔方法质量检测及其优选
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
16
期数:
2020年6期
页码:
61-67
栏目:
职业安全卫生管理与技术
出版日期:
2020-06-30

文章信息/Info

Title:
Quality inspection and optimization of different sealing methods for highlevel borehole
文章编号:
1673-193X(2020)-06-0061-07
作者:
程志恒; 卢云; 李海涛; 王宏冰; 浦仕江; 孙福龙; 娄亚辉
（1.华北科技学院 安全工程学院，河北 廊坊 101601;
2.华科中安科技（北京）有限公司，北京 102300；
3.煤炭科学技术研究院有限公司 安全分院，北京 100013；
4.煤炭资源高效开采和洁净利用国家重点实验室，北京 100013；
5.贵州大学 矿业学院，贵州 贵阳 550025）
Author(s):
CHENG Zhiheng;  LU Yun;  LI Haitao;  WANG Hongbing;  PU Shijiang;  SUN Fulong;  LOU Yahui
(1.School of Safety Engineering,North China Institute of Science and Technology,Langfang Hebei 101601,China;
2.Huake Zhongan Technology (Beijing) Co.,Ltd.,Beijing 102300,China;
3.Mine Safety Technology Branch of China Coal Research Institute,Beijing 100013,China;
4.National Key Lab of Coal Resource High Efficient Mining and Clean Utilization,Beijing 100013,China;
5.Mining College,Guizhou University,Guiyang Guizhou 550025,China)
关键词:
抽采钻孔; 封孔质量; 封孔方法; 瓦斯浓度; 抽采负压
Keywords:
drainage borehole;  sealing quality;  sealing method;  gas concentration;  drainage negative pressure
分类号:
X936;TD712
DOI:
10.11731/j.issn.1673-193x.2020.06.010
文献标志码:
A
摘要:
为优选出高位钻孔最佳的封孔方式，通过理论分析给出钻孔漏气6种表现形式，并推导出钻孔漏气量及漏风率的计算公式，进而基于不同钻孔深度瓦斯浓度及抽采负压的变化率确立钻孔漏气位置、漏气量、漏气率等封孔质量定量判定指标体系。结合封孔质量探测结果、操作难易程度及经济成本建立封孔方法优劣的多因素评价方法，并对聚氨酯式常压封孔（方法1）、囊袋式注浆带压封孔（方法2）、钻屑回填式注浆带压封孔（方法3）3种方法进行综合评价分析。研究结果表明：方法1～3的封孔段平均瓦斯浓度分别为5.6%，3.2%及8%，方法1对应的瓦斯浓度与抽采负压均出现突降，方法2对应的抽采负压在8～14 m出现突降，方法3则较稳定。故判定三者封孔质量为钻屑回填式＞囊袋式＞聚氨酯式，结合成本分析和操作难易综合分析确定高位钻孔的最优封孔方式为钻屑回填式注浆带压封孔。
Abstract:
In order to optimize the best sealing method for the highlevel borehole,six expression forms of borehole leakage were given through the theoretical analysis,and the calculation formulas of borehole leakage volume and air leakage rate were derived,then a quantitative evaluation index system of sealing quality such as the leakage position,leakage volume,and leakage rate of the borehole was established based on the change rates of gas concentration and drainage negative pressure under different borehole depths.A multifactor evaluation method for the advantages and disadvantages of the sealing method was established by combining with the detection results of sealing quality,difficulty level of operation,and economic cost,and the comprehensive evaluation analysis was conducted on three types of method including the polyurethane atmospheric pressure sealing (method 1),the capsular grouting with pressure sealing (method 2),and the drill cuttings backfill grouting with pressure sealing (method 3).The results showed that the average gas concentrations in the sealing sections by the methods 1-3 were 5.6%,3.2%,and 8%,respectively.Both the gas concentration and drainage negative pressure corresponding to the method 1 had the sudden drop,and the drainage negative pressure corresponding to the method 2 presented the sudden drop from 8 to 14 m,while the method 3 was more stable.Therefore,it was determined that the sealing quality of the three was method 3>method 2>method 1,and the optimal sealing method for highlevel borehole was the drilling cuttings backfill grouting with pressure sealing combined with the comprehensive analysis of cost analysis and operational difficulty.

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相似文献/References:

[1]张学博,高建良.深部开采松软煤层抽采钻孔变形特性研究[J].中国安全生产科学技术,2017,13(8):152.[doi:10.11731/j.issn.1673-193x.2017.08.024]
　ZHANG Xuebo,GAO Jianliang.Study on deformation characteristics of drainage borehole in soft coal seam with deep mining[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(6):152.[doi:10.11731/j.issn.1673-193x.2017.08.024]

备注/Memo

备注/Memo:
收稿日期： 2020-04-07
* 基金项目： 国家重点研发计划项目(2017YFC0804206-002)； 国家“十三五”重大专项项目(2016ZX05067005-005)；中央高校基本科研业务费项目（3142019005）
作者简介： 程志恒，博士，副研究员，主要研究方向为煤与瓦斯共采、矿山动力灾害预测与防控。
通信作者： 王宏冰，硕士研究生，工程师，主要研究方向为煤与瓦斯共采、矿山动力灾害预测与防控。
更新日期/Last Update: 2020-07-07