Influence Analysis of Mining’s Effect on Failure Characteristics of a Coal Seam Floor with Faults: A Numerical Simulation Case Study in the Zhaolou Coal Mine

2018 ◽  
Vol 37 (4) ◽  
pp. 754-762 ◽  
Author(s):  
Xiangxi Meng ◽  
Weitao Liu ◽  
Dianrui Mu
Keyword(s):  
Numerical Simulation ◽  
Coal Seam ◽  
Coal Mine ◽  
Failure Characteristics ◽  
Influence Analysis

Reasonable Entry Layout of Lower Seam in Multi-Seam Mining Based on Numerical Simulation

2013 ◽  
Vol 295-298 ◽  
pp. 2980-2984
Author(s):  
Xiang Qian Wang ◽  
Da Fa Yin ◽  
Zhao Ning Gao ◽  
Qi Feng Zhao
Keyword(s):  
Numerical Simulation ◽  
Stress Distribution ◽  
Coal Seam ◽  
Coal Mine ◽  
Abutment Pressure ◽  
Surrounding Rock ◽  
Geological Conditions ◽  
Seam Mining

Based on the geological conditions of 6# coal seam and 8# coal seam in Xieqiao Coal Mine, to determine reasonable entry layout of lower seam in multi-seam mining, alternate internal entry layout, alternate exterior entry layout and overlapping entry layout were put forward and simulated by FLAC3D. Then stress distribution and displacement characteristics of surrounding rock were analyzed in the three ways of entry layout, leading to the conclusion that alternate internal entry layout is a better choice for multi-seam mining, for which makes the entry located in stress reduce zone and reduces the influence of abutment pressure of upper coal seam mining to a certain extent,. And the mining practice of Xieqiao Coal Mine tested the results, which will offer a beneficial reference for entry layout with similar geological conditions in multi-seam mining.

scholarly journals Research on the Mining Effect of Floor Strata in Deep Coal Seam Mining: A Case Study of #7 Coal Seam at Chazhuang Coal Mine

2020 ◽  
Vol 570 ◽  
pp. 052013
Author(s):  
Wenquan Zhang ◽  
Xintao Wu ◽  
Jianli Shao ◽  
Yanghui Ren ◽  
Zaiyong Wang
Keyword(s):  
Coal Seam ◽  
Coal Mine ◽  
Seam Mining

Improving the permeability of coal seam with pulsating hydraulic fracturing technique: A case study in Changping coal mine, China

2018 ◽  
Vol 117 ◽  
pp. 565-572 ◽  
Author(s):  
Ni Guanhua ◽  
Xie Hongchao ◽  
Li Zhao ◽  
Zhuansun Lingxun ◽  
Niu Yunyun
Keyword(s):  
Coal Seam ◽  
Hydraulic Fracturing ◽  
Coal Mine

The Parameter Optimization and Field Application of Truss Cable Support System in a Thick Fragmental Coal Seam Roadway

2012 ◽  
Vol 524-527 ◽  
pp. 382-386
Author(s):  
Xiao Kang Zhang ◽  
Hong Jun Jiang ◽  
Fu Lian He ◽  
Ming Yue Weng
Keyword(s):  
Numerical Simulation ◽  
Coal Seam ◽  
Parameter Optimization ◽  
Support System ◽  
Coal Mine ◽  
Field Application ◽  
Simulation Software ◽  
Surrounding Rock ◽  
Set Up ◽  
Main Support

For the support problem of set-up room to be 7.8m wide with thick and broken coal roof in Pangpangta coal mine, the truss cable support system is adopted to control the set-up room surrounding rock. The main support parameters, such as cable length, cable angle and distance between orifice and side of the truss cable support system are simulated and optimally designed by using numerical simulation software FLAC3D, by which the support scheme is designed reasonably. The support scheme is successfully tested at set-up room No. 10101 in Pangpangta mine. The set-up room deformation is small, and the support system is safe and reliable. This kind of support technology can be widely used in the similar set-up rooms.

Sign in / Sign up

Export Citation Format

Share Document