| 基于充填体稳定性判定的等灰砂比充填可行性研究 |
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| 引用本文： | 闫冬飞,马凤山,张亚民,郭捷,郭慧高,王虎.基于充填体稳定性判定的等灰砂比充填可行性研究[J].金属矿山,2011,40(10):41. |
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| 作者姓名： | 闫冬飞 马凤山 张亚民 郭捷 郭慧高 王虎 |
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| 作者单位： | 1.中国科学院地质力学重点实验室；2.金川集团有限公司二矿区 |
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| 基金项目： | 国家自然科学基金项目，中国科学院知识创新工程重要方向项目 |
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| 摘 要： | 将压力拱理论与简支梁理论相结合分析了下向进路胶结充填体的稳定性，给出了充填体稳定性的简易判定公式；首次提出了等灰砂比充填的充填方案，并结合金川二矿区工程实例，对新方案的可行性进行了论证，使用的高浓度料浆胶结充填法若采用等灰砂比充填，灰砂比设为1∶6能满足强度要求，且每年能节约成本约140万元。
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| 关 键 词： | 充填体稳定性判定 压力拱理论 简支梁理论 等灰砂比充填 |
Feasibility Study on Equal Cement-sand Ratio Backfill based on Stability Judgment of the Filling Body |
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| Yan Dongfei,Ma Fengshan,Zhang Yamin,Guo Jie,Guo Huigao,Wang Hu.Feasibility Study on Equal Cement-sand Ratio Backfill based on Stability Judgment of the Filling Body[J].Metal Mine,2011,40(10):41. |
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| Authors: | Yan Dongfei Ma Fengshan Zhang Yamin Guo Jie Guo Huigao Wang Hu |
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| Affiliation: | 1.Key Laboratory of Engineering Geomechanics，Chinese Academy of Sciences；2.No.2 Mining Area，Jinchuan Non-ferrous Metal Corporation |
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| Abstract: | The stability of the underhand drift cemented filling body is analyzed by using stress arch theory and beam theory，and a simple judgment formula of the stability is obtained.A filling scheme with equal cement-sand ratio is firstly proposed，and the feasibility of the new scheme is proved in a case of Jinchuan No.2 mining area.The high concentration cement filling method with the equal cement-sand ratio of 1∶6 can meet the requirements on strength，and about RMB 1.4 million yuan of costs can be saved each year. |
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| Keywords: | Stability judgment of the filling body Stress arch theory Beam theory Equal cement-sand ratio backfill |
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