ZHANG Y B, CHEN P, YIN S X,et al.Inversion fitting of rock movement parameter and mining scheme optimization of working face in Zhaogu No.2 Coal Mine[J].Journal of Henan Polytechnic University(Natural Science) ,2023,42(4):47-54.

doi:10.16186/j.cnki.1673-9787.2022040063

Received:2022/04/25

Revised:2023/02/27

Published:2023/07/25

Inversion fitting of rock movement parameter and mining scheme optimization of working face in Zhaogu No.2 Coal Mine

ZHANG Yanbin1, CHEN Pan2, YIN Shixian1, ZHANG Wenzhi3

1.Safety Technology Training Center，Henan Polytechnic University，Jiaozuo  454000，Henan，China;2.Xinxiang Energy Co.，Ltd.，Jiaozuo Coal Mining Group，Xinxiang  453634，Henan，China;3.School of Surveying and Land Information Engineering，Henan Polytechnic University，Jiaozuo  454000，Henan，China

Abstract:In view of the lack of accurate surface rock movement parameters under the condition of thick loose bed and large mining depth in Zhaogu No.2 Coal Mine，firstly，the measured data were obtained by establishing a surface movement and deformation observation station，and the measured data were inversely analyzed by using the self-developed comprehensive evaluation and calculation program for predicting the degree of movement，deformation and damage，and the main surface rock movement parameters under this geological condition were obtained.Then，the probability integral method was used to predict the surface movement and deformation value of each mining plan of the 14030 working face.Finally，the damage level influence range of the surface villages was determined according to the prediction results，and the optimal mining plan was determined.The research showed that the mining surface reflected strongly under the deep conditions of thick unconsolidated layer，the influence range was far，the subsidence coefficient reached 1，the loose layer movement angle was 46°，the bedrock movement angle was 68°，the inflection point offset was smaller，the negative value was -33 m，the lithologic coefficient of mining time was 2.85，and the horizontal movement coefficient was 0.4 due to the water loss and consolidation settlement of the unconsolidated layer.The rock movement parameters obtained from the study had been used to guide production practice and achieved good results.The study had an important reference value to reasonably reserve village protection coal pillars for Zhaogu No.2 Coal Mine.

Key words:Zhaogu No.2 Coal Mine;thick loose bed;surface subsidence;rock movement parameter;inversion fitting

赵固二矿岩移参数反演拟合及工作面开采方案优化_张彦宾.pdf