第
44
卷第
3
期
2013
年
3
月
中南大学学报(自然科学版)
Journal
of
Central
South
University (Science
and
Technology)
Vo
l.44 No
.3
Mar.2013
巷道型采场
破粉尘质
浓度分布及变化规律的数值模拟
蒋伸安
l
,陈梅岭
1
,
2
,陈举师
1
(1.北京科技大学教育部金属矿山高效开采与安全重点实验室,北京,
100083;
2.
五矿安徽开发矿业有限公司,安徽六安,
237400)
摘要:为掌握来场爆破作业时粉尘质量浓度的分布及变化规律,获取通风除尘设计的合理参数,以李楼铁矿
-200
m
水平
44
号来场为研究背景,依据气固两相流理论,运用
Fluent
软件对巷道型来场爆破粉尘质量浓度分布规律
进行数值模拟,并与现场实测数据进行对比分析。研究结果表明:模拟结果与实测数据基本一致。在采场进路断
面方向,粉尘质量浓度呈由左至右、由下至上降低的分布规律:在轴线方向,粉尘质量浓度呈中间高,两侧低的
分布态势:当联络巷风速为
2
m1
s
时,采场空间内粉尘沉降及排出效果较好;此外,还可通过加强壁面洒水及安
装压入式通风等措施改善粉尘的沉降及排出效果。
关键词:巷道型来场:爆破粉尘:气固两相流:浓度分布:数值模拟
中图分类号:
TD714.2
文献标志码
:A
文章编号:
1
672-7207(20
13)03-11
90-07
Numerical simulation
of
dust concentration distribution
and
changing regularities in roadway stope blasting
JIANG
Zhongan
1
,
CHEN
Meiling
1
, 2,
CHEN
Jushi
1
(1.
The key laboratory
ofMinis
盯
I
of
Education for High
E
任
iciency
Exploitation and Safety
of
Metal Mine,
University
ofScience
and Technology Beijing, Beijing 100083, China;
2.
Anhui Mining Development Co.
Lt
d.
,
Liu'an
237400, China)
Abstract:
In order to master the regularities
of
dust concentration distribution and changing in stope blasting and obtain
rational parameters for the design
of
dust removal
by
ventilation, taking No
.4
4 stope
of
Lilou Iron Mine as the research
background
, based on the theory
of
gas-solid two-phase flow, the regularities
of
dust concentration distribution in
roadway stope blasting were simulated using Fluent
so
企
ware.
The simulation results were compared with field measured
data. The results indicate that the simulation results are essentially coincident with the measured data. In cross section
of
stope drift, dust
concen
仕
ation
will gradually decrease
radially
仕
om
left to right, and bottom to up. In the axis, dust
concentration among are higher than that on both sides.
When the velocity
of
wind is 2
m1
s, the dust settlement and
discharge effect is
be
忧
er
in stope space. In addition,
s
仕
engthening
watering to the stope wall and installation pressure
system
of
ventilation can improve the settlement and discharge effec
t.
Key
words:
roadway stope; blasting dust; gas-solid two-phase flow; concentration distribution; numerical simulation
随着工农业的快速发展,人口的剧增以及人类物
质生活水平的提高,社会对矿产资源的需求越来越大。
收稿日期:
2012-03-02;
修回日期:
2012
-0
5
一
12
基金项目:国家自然科学基金资助项目
(51274024)
在矿产资源的地下开采过程中,爆破作业是不可缺少
的工艺环节,爆破过程中会产生大量的烟尘,给现场
通信作者:蒋仲安
(1963-)
,男,浙江诸暨人,博士生导师,从事矿开通风安全及粉尘控制研究:电话:
010-62313972;
E-mail:
jzaI963@263.net
第
44
卷第
3
期
2013
年
3
月
中南大学学报(自然科学版)
Journal
of
Central
South
University (Science
and
Technology)
Vo
l.44 No
.3
Mar.2013
巷道型采场
破粉尘质
浓度分布及变化规律的数值模拟
蒋伸安
l
,陈梅岭
1
,
2
,陈举师
1
(1.北京科技大学教育部金属矿山高效开采与安全重点实验室,北京,
100083;
2.
五矿安徽开发矿业有限公司,安徽六安,
237400)
摘要:为掌握来场爆破作业时粉尘质量浓度的分布及变化规律,获取通风除尘设计的合理参数,以李楼铁矿
-200
m
水平
44
号来场为研究背景,依据气固两相流理论,运用
Fluent
软件对巷道型来场爆破粉尘质量浓度分布规律
进行数值模拟,并与现场实测数据进行对比分析。研究结果表明:模拟结果与实测数据基本一致。在采场进路断
面方向,粉尘质量浓度呈由左至右、由下至上降低的分布规律:在轴线方向,粉尘质量浓度呈中间高,两侧低的
分布态势:当联络巷风速为
2
m1
s
时,采场空间内粉尘沉降及排出效果较好;此外,还可通过加强壁面洒水及安
装压入式通风等措施改善粉尘的沉降及排出效果。
关键词:巷道型来场:爆破粉尘:气固两相流:浓度分布:数值模拟
中图分类号:
TD714.2
文献标志码
:A
文章编号:
1
672-7207(20
13)03-11
90-07
Numerical simulation
of
dust concentration distribution
and
changing regularities in roadway stope blasting
JIANG
Zhongan
1
,
CHEN
Meiling
1
, 2,
CHEN
Jushi
1
(1.
The key laboratory
ofMinis
盯
I
of
Education for High
E
任
iciency
Exploitation and Safety
of
Metal Mine,
University
ofScience
and Technology Beijing, Beijing 100083, China;
2.
Anhui Mining Development Co.
Lt
d.
,
Liu'an
237400, China)
Abstract:
In order to master the regularities
of
dust concentration distribution and changing in stope blasting and obtain
rational parameters for the design
of
dust removal
by
ventilation, taking No
.4
4 stope
of
Lilou Iron Mine as the research
background
, based on the theory
of
gas-solid two-phase flow, the regularities
of
dust concentration distribution in
roadway stope blasting were simulated using Fluent
so
企
ware.
The simulation results were compared with field measured
data. The results indicate that the simulation results are essentially coincident with the measured data. In cross section
of
stope drift, dust
concen
仕
ation
will gradually decrease
radially
仕
om
left to right, and bottom to up. In the axis, dust
concentration among are higher than that on both sides.
When the velocity
of
wind is 2
m1
s, the dust settlement and
discharge effect is
be
忧
er
in stope space. In addition,
s
仕
engthening
watering to the stope wall and installation pressure
system
of
ventilation can improve the settlement and discharge effec
t.
Key
words:
roadway stope; blasting dust; gas-solid two-phase flow; concentration distribution; numerical simulation
随着工农业的快速发展,人口的剧增以及人类物
质生活水平的提高,社会对矿产资源的需求越来越大。
收稿日期:
2012-03-02;
修回日期:
2012
-0
5
一
12
基金项目:国家自然科学基金资助项目
(51274024)
在矿产资源的地下开采过程中,爆破作业是不可缺少
的工艺环节,爆破过程中会产生大量的烟尘,给现场
通信作者:蒋仲安
(1963-)
,男,浙江诸暨人,博士生导师,从事矿开通风安全及粉尘控制研究:电话:
010-62313972;
E-mail:
jzaI963@263.net