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李彤彤(1996-),女,河北石家庄人,硕士研究生,从事岩石力学及地下工程深部灾害防治研究工作。Littong@csu.edu.cn |
收稿日期: 2020-01-19
修回日期: 2020-05-26
网络出版日期: 2020-08-27
基金资助
国家自然科学基金重点项目“深部资源开采诱发岩体动力灾害机理与防控方法研究”(41630642)
Research and Application of T-FME Rockburst Propensity Prediction Model Based on Combination Weighting
Received date: 2020-01-19
Revised date: 2020-05-26
Online published: 2020-08-27
为了提高岩爆倾向性预测模型的精度,确保岩爆多指标综合评价方法中指标赋权方式和关联度函数的选用更加全面合理,建立了基于组合赋权的T-FME岩爆倾向性预测模型。该模型在选取岩石脆性系数、切向应力指数和弹性应变能指数作为评价指标的基础上,由序关系分析法和Vague熵确定指标主、客观权重,引入最小鉴别信息原理对指标组合赋权,最后采用理想点法计算贴近度复合模糊物元得到岩爆倾向性等级。运用国内外15组工程岩爆实例对该模型进行测试,与其他模型预测结果进行对比,并将该模型应用于国内若干实际工程。结果表明:该模型预测精度更高,预测等级更加安全,对国内几项实际工程岩爆倾向性的预测等级与实际情况相符,说明该模型具有较强的适用性。
李彤彤 , 王玺 , 刘焕新 , 侯奎奎 , 李夕兵 . 基于组合赋权的T-FME岩爆倾向性预测模型研究及应用[J]. 黄金科学技术, 2020 , 28(4) : 565 -574 . DOI: 10.11872/j.issn.1005-2518.2020.04.040
Due to the limitations of its own operating conditions,many multi-index comprehensive evaluation methods of rockburst are liable to cause low accuracy,and there is currently no unified prediction standard.In order to improve the accuracy of rockburst tendency prediction model,we must ensure that the index weighting method and the selection of the correlation function are more comprehensive and reasonable then a prediction model of T-FME rockburst tendency was established.According to the mechanism and condition of rock ex-plosion,brittle coefficient,tangential stress index and elastic strain energy index were selected as the evaluation indexes from three aspects:Surrounding rock stress,lithological conditions and surrounding rock energy storage.On the one hand,the excessive subjectivity of subjective judgments will affect the objectivity of index weights,on the other hand,in the case of limitated information,entropy weight method excessively depends on the degree of index variation will lead to bias.In order to make up for these deficiencies,the principle of minimum discriminant information was introduced,and the indicators were combined and weighted by combining the subjective and objective weights that the subjective weight of the indicator is determined by the ordinal relationship analysis method and the objective weight of the indicator was determined by the conventional entropy weight method which has been modified by the vague entropy.The T-FME rockburst propensity pre-diction model is based on the fuzzy matter-element analysis method and combines the principles of the TOPSIS method to construct the ideal fuzzy matter-element.The concept of ideal difference-square compound fuzzy matter-element was proposed.Post progress calculation has been optimized,the closeness compound fuzzy matter element was calculated.Finally,the degree of rockburst tendency can be obtained through the closeness analysis.Using the data of 15 domestic and foreign engineering rockburst examples to test the T-FME model and other 4 rockburst propensity prediction models that use different weighting methods and correlation degree functions,and these rockburst propensity prediction models are the ideal fuzzy matter element method based on Vague entropy weight,the ideal fuzzy matter-element method based on expert experience method,the euclid approach degree fuzzy matter-element method based on combined weighting,and the gray favorably membership degree fuzzy matter-element method.By analyzing the results of this test of these models,it is known that the prediction accuracy of the T-FME rockburst tendency prediction model is as high as 93.3%.Compared with other models,the accuracy of the prediction is improved by 6.6%~10.0%,and the prediction of the rockburst propensity level which is biased is higher than actual,so the prediction result is safer.Finally,the model was applied to 5 domestic practical projects,and the prediction results are consistent with the actual rockburst propensity level,which proves that the model has strong feasibility and applicability.
自然资源部部署储量新老分类标准数据转换
2020年8月3日,自然资源部办公厅印发《关于做好矿产资源储量新老分类标准数据转换工作的通知》,部署新分类标准下矿产资源储量数据转换工作,要求在2021年3月底前完成数据转换。
通知明确,本次数据转换立足矿产资源勘查开采实际,遵循实事求是、简单可行、易于操作的原则,以2019年度矿产资源储量数据为基础,结合2020年矿产资源储量统计和矿山储量年报编制开展转换,具体包括:一是将老分类标准中的储量,按照地质可靠程度、可行性研究程度转换为新分类标准的证实储量和可信储量;二是将老分类标准中的基础储量,按照地质可靠程度转换为新分类标准的探明资源量和控制资源量;三是将老分类标准中的各类资源量,按照地质可靠程度转换为新分类标准的探明资源量、控制资源量和推断资源量;四是将老分类标准中预测的资源量纳入“潜在矿产资源”管理。
根据通知,本次数据转换的实现路径为:一是自然资源部按照对应关系将2019年度全国矿产资源储量数据直接转换后,下发至各省级自然资源主管部门;二是省级自然资源主管部门负责组织对矿业权许可证信息、生产状态以及已评审备案未登记的信息进行核实补录等;三是对于无矿业权人的,省级自然资源主管部门应组织开展核实,更正错误、补充遗漏、删除重复,并调整矿产资源储量数据库;四是省级自然资源主管部门负责将转换结果下发至矿山企业,采矿权人调整和确认转换结果;五是采矿权人完成调整确认后,如转换数据存在重大变化,应编制符合相关标准规范的矿产资源储量核实报告,于2021年2月底前完成评审备案申请。
关于数据转换的时限,通知要求,2021年1月底前矿业权人编制矿山储量年报并上报自然资源主管部门;2021年3月底前省级自然资源主管部门将审查后的矿产资源储量数据库报自然资源部,最终形成2020年度新分类标准下的矿产资源储量数据,完成数据转换。
(来源:中国自然资源报)
http://www.goldsci.ac.cn/article/2020/1005-2518/1005-2518-2020-28-4-565.shtml
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