深井开采岩爆预测与防控措施研究
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摘要
选取某矿山深部岩体进行试验,利用岩爆危险性判据评价岩爆的倾向性,并分析岩爆试验特征.结果表明:含铜磁铁矿具有中等岩爆倾向,其它岩石无岩爆倾向;岩爆倾向性与岩石强度有关,同一岩性岩体,强度越大,弹性能指数越高,岩爆倾向越明显;动态破坏时间与强度无明显相关关系.针对矿山开采情况,提出岩爆防治措施,以降低岩爆发生的可能性,提高井下作业安全.
Based on criterion for rock burst risk,sets of rock samples in the deep mass that come from a mine are used to determine rock burst proneness and analyse on characteristics of the test. Then the test result shows moderate proneness of cupreous magnetite,and no proneness of others. Rock burst proneness is related to rock strength. The higher the strength is,the higher the elastic energy index and the greater the rock burst proneness is. However,there is no significant correlation between rock bust proneness and dynamic destruction time. Based on the actual situation of the mine,several measures of rock burst prevention are put forward to reduce the possibility of blasting and improve the safety of underground production.
Based on criterion for rock burst risk,sets of rock samples in the deep mass that come from a mine are used to determine rock burst proneness and analyse on characteristics of the test. Then the test result shows moderate proneness of cupreous magnetite,and no proneness of others. Rock burst proneness is related to rock strength. The higher the strength is,the higher the elastic energy index and the greater the rock burst proneness is. However,there is no significant correlation between rock bust proneness and dynamic destruction time. Based on the actual situation of the mine,several measures of rock burst prevention are put forward to reduce the possibility of blasting and improve the safety of underground production.
引文
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[2]张晓春.矿山岩爆防治机理[M].南京:东南大学出版社,2010.
[3]钱七虎.岩爆、冲击地压的定义、机制、分类及其定量预测模型[J].岩土力学,2014,35(1):1-6.
[4]何满潮,苗金丽,李德建,等.深部花岗岩试样岩爆过程实验研究[J].岩石力学与工程学报,2007,26(5):865-876.
[5]黄润秋,黄达.卸荷条件下花岗岩力学特性试验研究[J].岩石力学与工程学报,2008,27(11):2205-2213.
[6]王喜华,赵志明,尹建勋,等.雅鲁藏布江峡谷段盆因拉隧道岩爆预测[J].地球科学与环境学报,2013,35(2):115-119.
[7]张然,王金安,马海涛.米仓山深埋公路隧道岩爆预测与防治对策研究[J].地下空间与工程学报,2013,9(6):1406-1411.
[8]王学滨,潘一山,王玮.不同围压条件下的圆形巷道岩爆过程模拟[J].防灾减灾工程学报,2014,29(1):1-6.
[9]蔡美峰.岩石力学与工程[M].北京:科学出版社,2002.
[10]贾义鹏,吕庆,尚岳全,等.基于证据理论的岩爆预测[J].岩土工程学报,2014,36(6):1079-1086.
[11]汪新红,王明洋.岩爆与峰后岩石力学特性[J].岩土力学,2006,27(6):913-919.
[12]刘畅,张见,彭云,等.采场顶板安全厚度与跨度及暴露面积的关系研究[J].矿冶工程,2016,36(6):18-21.