Based on the theory of overlying strata movement laws and rock burst,taking No.103 upwork face at ten mining block in Baodian Mine as the study object,the movement law of ultra thick overlying strata broken and the factors induced coal mine earthquakes were researched by computer numerical simulation and theoretical analysis.The relativity between overlying strata movement and mine earthquakes was verified through analyzing site micro-seismic data.The results showed that before the red sandstone broken,the ...