盐膏岩DRA-Kaiser地应力测试方法初探

doi:10.13722/j.cnki.jrme.2014.0132

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Abstract Currently，existing geostress measurement methods are not suitable for salt-gypsum formation，while it needs geostress data to do drilling design for ensuring drilling safety in salt-gypsum formation. To alleviate this problem，geostress of rock salt-gypsum for the first time by DRA-Kaiser method is measured. It indicates that combining DRA and Kaiser method could increase the credibility of test data. When the stress-strain difference curve displays inflection point，and stress-acoustic emission intensity curve has significantly increased point，the stress which corresponds to axial compression is the stress that rock suffered. It avoids displaying several Kaiser points in previous Kaiser effect experiments.

Key words： rock mechanics rock salt-gypsum DRA-Kaiser method Kaiser effect geostress measurement

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2014.0132 OR http://www.rockmech.org/EN/Y2015/V34/Is1/3138

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