赵楼煤矿1 000 m深孔水压致裂地应力测量及其应力场研究

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Abstract Zhaolou coal mine is one of the deepest mines in China. Its geological structure is more complex because it is located in Caoxian—Yuncheng active fault. In order to master the distribution law of in-situ stress field in the mine，the in-situ stress measurement is carried out by means of the hydraulic fracturing in-situ stress measurement technique. The stress states are obtained for 16 measuring sections in 2 holes. The measurement results show that the maximum principal stress increases linearly as the depth increases；and the in-situ stresses are varied around the depth of 800 m. The maximum horizontal principal stresses are 28.45–45.75 MPa；and their directions are NEE. It reflects that the horizontal stress is dominant in the stress field of the mine area. The proposed measurement results provide scientific basis for the mine construction and mining design.

Key words： mining engineering Zhaolou coal mine 1 000 m deep hole hydraulic fracturing technique in-situ stress measurement stress field

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http://www.rockmech.org/EN/Y2011/V30/I8/1638

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