1
24-039
Experimental Study on Position Evolution and Load Transfer
Law of Support in Large Dip Angle Stope Based on Digital Twin
Panshi Xie
Yan Chen
Shaogang Wu
Yang Hang
Key Laboratory of Western Mine Mining and
Disaster Prevention, Ministry of Education, Xi ‘an
University of Science and Technology, Xi ‘an,China
School of Energy, Xi ‘an University of Science and
Technology, Xi ‘an, China
ABSTRACT
In order to realize the intelligent mining of coal seam with
large dip Angle, this paper adopts the methods of large
proportion variable Angle loading threedimensional physi-
cal simulation experiment, numerical simulation and field
measurement with digital twin technology. The hydraulic
support with large dip Angle and large mining height is
used as the prototype to design the physical entity model
of 1:5 hydraulic support, combined with modeling and
graphics rendering technology. Angle, displacement and
load sensors were selected and placed to realize the data
channel between the lower machine and the upper com-
puter of the digital twin system, so that the position and
load data of the physical entity model and the twin model
of the laboratory hydraulic support could be shared in real
time. Moreover, the multi-dimensional dynamic and static
load transfer law and the position evolution characteristics
of the support and surrounding rock under different incli-
nation angles were analyzed. The results show that: with the
Supported by the National Natural Science Foundation
of China (Grant No.52174126 and 52104147), Shaanxi
Outstanding Youth Science Foundation Project (2023-JC-JQ-
42), Shaanxi University Youth Innovation Team Project
increase of the Angle of the working face, first, the initial
support force required by the support decreases, and the
damage degree of the roof increases When the roof is soft,
the lifting operation can avoid the instability of the support
to a certain extent. Second, under the action of positive
pressure, the load of the top beam under different angles
is balanced Under the backpushing action, the load in the
upper inclined area of the shield beam increases gradually,
while the load in the lower inclined area decreases gradu-
ally. Under the lateral push, the load changes periodically,
and the load in each cycle is increased compared with that
in the previous cycle. Third, the numerical simulation anal-
ysis shows that the load on the lower bracket is less than
that on the upper bracket, and the load on the bottom of all
the columns is greater than that on the middle and upper
brackets. In order to reduce the impact of the columns on
the bottom plate or the base, it is necessary to improve
the anti-subsidence ability of the base. Finally, according
to the research results, the improvement and optimization
measures of the support are put forward, and the field test
shows that these measures effectively solve the problems of
sinking, sliding and tipping of the support in the working
face with large inclination Angle, and obtain good applica-
tion results.
24-039
Experimental Study on Position Evolution and Load Transfer
Law of Support in Large Dip Angle Stope Based on Digital Twin
Panshi Xie
Yan Chen
Shaogang Wu
Yang Hang
Key Laboratory of Western Mine Mining and
Disaster Prevention, Ministry of Education, Xi ‘an
University of Science and Technology, Xi ‘an,China
School of Energy, Xi ‘an University of Science and
Technology, Xi ‘an, China
ABSTRACT
In order to realize the intelligent mining of coal seam with
large dip Angle, this paper adopts the methods of large
proportion variable Angle loading threedimensional physi-
cal simulation experiment, numerical simulation and field
measurement with digital twin technology. The hydraulic
support with large dip Angle and large mining height is
used as the prototype to design the physical entity model
of 1:5 hydraulic support, combined with modeling and
graphics rendering technology. Angle, displacement and
load sensors were selected and placed to realize the data
channel between the lower machine and the upper com-
puter of the digital twin system, so that the position and
load data of the physical entity model and the twin model
of the laboratory hydraulic support could be shared in real
time. Moreover, the multi-dimensional dynamic and static
load transfer law and the position evolution characteristics
of the support and surrounding rock under different incli-
nation angles were analyzed. The results show that: with the
Supported by the National Natural Science Foundation
of China (Grant No.52174126 and 52104147), Shaanxi
Outstanding Youth Science Foundation Project (2023-JC-JQ-
42), Shaanxi University Youth Innovation Team Project
increase of the Angle of the working face, first, the initial
support force required by the support decreases, and the
damage degree of the roof increases When the roof is soft,
the lifting operation can avoid the instability of the support
to a certain extent. Second, under the action of positive
pressure, the load of the top beam under different angles
is balanced Under the backpushing action, the load in the
upper inclined area of the shield beam increases gradually,
while the load in the lower inclined area decreases gradu-
ally. Under the lateral push, the load changes periodically,
and the load in each cycle is increased compared with that
in the previous cycle. Third, the numerical simulation anal-
ysis shows that the load on the lower bracket is less than
that on the upper bracket, and the load on the bottom of all
the columns is greater than that on the middle and upper
brackets. In order to reduce the impact of the columns on
the bottom plate or the base, it is necessary to improve
the anti-subsidence ability of the base. Finally, according
to the research results, the improvement and optimization
measures of the support are put forward, and the field test
shows that these measures effectively solve the problems of
sinking, sliding and tipping of the support in the working
face with large inclination Angle, and obtain good applica-
tion results.