Calculation of fume-drainage time of tunnel after blasting

CAO Yang; JI Hongguang; ZHOU Qiming

doi:10.11918/j.issn.0367-6234.201605096

Chinese

您当前的位置：

首页 >

文章列表页 >

Calculation of fume-drainage time of tunnel after blasting

更新时间：2026-10-19

- Calculation of fume-drainage time of tunnel after blasting
- Vol. 49, Issue 8, Pages: 2017-8(2017)
- 作者机构：
  
  1. 北京科技大学土木与资源工程学院,北京,100083
  2. 山东黄金归来庄矿业有限公司,山东,临沂,273307
- 作者简介：
- 基金信息：
- DOI：10.11918/j.issn.0367-6234.201605096
  CLC： X9
- Published：2017
- 稿件说明：
移动端阅览
CAO Yang, JI Hongguang, ZHOU Qiming. Calculation of fume-drainage time of tunnel after blasting[J]. 2017, 49(8): 2017-8.
DOI：

CAO Yang, JI Hongguang, ZHOU Qiming. Calculation of fume-drainage time of tunnel after blasting[J]. 2017, 49(8): 2017-8. DOI： 10.11918/j.issn.0367-6234.201605096.

摘要

为研究掘进面爆破后排烟时间，推导掘进面炮烟运移规律公式，对排烟时间影响因素进行灰色关联度计算，得出主要影响因素的敏感性大小排序为：巷道出口到掘进面迎头的距离(0.827)＞风筒口到掘进面迎头的距离(0.738)＞风筒供风量(0.628)＞炮烟中CO初始体积分数(0.547).在归来庄金矿掘进巷道中进行炮烟监测试验，研究了压入式通风条件下，风筒口到掘进面迎头的距离LO分别为10、15、20、25、30 m时，巷道出口到掘进面迎头的距离LP分别为40、60、80、100、120 m的排烟时间.研究结果表明：排烟时间随巷道出口到掘进面迎头的距离增加而变长，两者拟合成线性关系；排烟时间随风筒口到掘进面迎头的距离增加而变长，成非线性增加；排烟系数c与LO拟合成线性关系，并推导出不同工况下排烟时间的计算式；在试验及相似巷道的5个工况下进行验证，相对误差为6.1%，3.8%，5.4%、8.8%，9.3%，具有较好的准确性和可靠性

Abstract

To research fume-drainage time of tunnel after blasting

the formula of removal law of blasting fume in tunnel is deduced. Through calculating the grey correlation degree of influential factors of fume-drainage time

the ranking results of sensitive degree of main influential factors are: distance of entrance to tunnel face (0.827) > distance of duct to tunnel face(0.738) > air flow in duct(0.628) > initial volumetric concentration of CO in blasting fume(0.547). Blasting fume monitoring tests were conducted in tunnel to study the fume-drainage time when the distance of duct to tunnel face LO are respectively 10

30 m and the distance of entrance to tunnel face LP are respectively 40

100

120 m under the condition of forced ventilation. Research findings reveal that: fume-drainage time increases with the longer distance of entrance to tunnel face. The fitting result of the both is linear relation; fume-drainage time shows nonlinear rise with the addition of the distance of duct to tunnel face. The fitting result of fume-drainage coefficient c and LO is linear relation

and calculation formulas of fume-drainage time in different working condition are concluded. Verification of equation is carried out in 5 tested similar tunnels. And relative errors are respectively 6.1%

3.8%

5.4%

8.8%

9.3%

which have remarkable accuracy and reliability

关键词

Keywords

references

Views

1043

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Correlation between ground surface deformation and influential factors in permafrost regions

Incremental intrusion detection mechanism considering cost-sensitive

MetaDAGAN-driven approach for multifunction radar and operating mode recognition

Diverse text-to-image synthesis based on word-level attention

An incremental intrusion detection method based on contrastive learning and relational distillation

Related Author

ZHAO Tao

ZHANG Mingyi

LU Jianguo

YAN Zhongrui

Related Institution

State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences

University of Chinese Academy of Sciences

AI问答

Postal code：100079
Tel：（010）53879206 Email：tmw@bjxintong.com.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09082226号-64 京公网安备11010602201714号
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰