赵固二矿11020工作面安全煤(岩)柱留设研究

doi:10.11799/ce201606003

Abstract

Abstract: In order to improve the efficiency of mining as well as transfer slicing mining to large mining height of a fully mechanized in ZhaoGuⅡmine 11020 working face,Based on the hydro geological exploration,geotechnical test,point load strength test and dry saturated water absorption test,measures have been taken to study the water rich and water blocking characteristics in the overlying strata,and then demonstrate the possibility of sand control safety coal (rock) column in the working face,field measurement,empirical formula, numerical simulation and other measures are taken to expect the development height of “Two Zone”.The results show that the sand control safety coal (rock) column and large mining height of a fully mechanized can be used in the most area of 11020 working face, the area that borehole water inflow is higher than 15m3/h after dewatering should adopt the water control safety coal (rock) column,make use of the thickness of bedrock in this area to calculate the safe mining height.

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TD822+.3

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http://www.coale.com.cn/EN/Y2016/V48/I6/8

References

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Study on Safety Coal and Rock Pillar Designfor 11020 Coal Face in Zhaogu No.2 Mine

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