| 让压型锚索箱梁支护系统组合构件耦合性能分析及应用 |
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| 引用本文： | 王琦,李术才,李为腾,李智,江贝,苗素军,李海燕,王德超,王洪涛.让压型锚索箱梁支护系统组合构件耦合性能分析及应用[J].岩土力学,2012,33(11):3374-3384. |
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| 作者姓名： | 王琦 李术才 李为腾 李智 江贝 苗素军 李海燕 王德超 王洪涛 |
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| 作者单位： | 1. 山东大学 岩土与结构工程研究中心，济南 250061；2. 兖矿集团有限公司 博士后科研工作站，山东 邹城 273500 |
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| 基金项目： | 国家自然科学基金青年科学基金资助项目，教育部博士点基金，山东省自然科学基金面上项目 |
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| 摘 要： | 对锚索梁支护及组合构件耦合支护研究现状进行了总结分析，指出锚索梁支护系统组合构件耦合支护研究的必要性和意义。以“先控后让再抗”支护理念为指导，研发出高强让压型锚索箱梁支护系统。通过层次分析法得到支护系统各构件权重值，提出了支护系统构件整体性能利用率、耦合效率和围岩控制效果3个指标，进行的13种数值试验对比方案结果表明：Ⅱ12c+? 22锚索、Ⅱ12b+? 22锚索和Ⅱ12a+? 17.8锚索方案对应的支护系统均具有较高的耦合效率；锚索型号对支护系统耦合效率具有较为显著的影响；增大预紧力有助于进一步提高构件整体利用率、耦合效率，改善围岩控制效果。设计制作了测力箱梁，选择Ⅱ12b+? 22锚索方案对应的锚索梁支护系统进行了现场试验，测站监测结果显示，支护系统在掘巷期间的整体性能利用率为54.51%，构件耦合效率达到75.61%，系统各构件达到了同步承载的效果，巷道顶板沉降量和两帮移近量分别为148 mm和180 mm，较好地控制了巷道围岩变形。
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| 关 键 词： | 箱型支护梁 锚索让压环 组合构件 耦合性能 数值试验 现场试验 |
| 收稿时间： | 2011-11-14 |
Analysis of combination components coupling of pressure relief anchor box beam support system and application |
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| WANG Qi
,
LI Shu-cai
,
LI Wei-teng
,
LI Zhi
,
JIANG Bei
,
MIAO Su-jun
,
LI Hai-yan
,
WANG De-chao
,
WANG Hong-tao.Analysis of combination components coupling of pressure relief anchor box beam support system and application[J].Rock and Soil Mechanics,2012,33(11):3374-3384. |
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| Authors: | WANG Qi LI Shu-cai LI Wei-teng LI Zhi JIANG Bei MIAO Su-jun LI Hai-yan WANG De-chao WANG Hong-tao |
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| Institution: | 1. Research Center of Geotechnical and Structural Engineering , Shandong University, Jinan 250061, China; 2. Post-Doctoral Scientific Research Station, Yankuang Group Company Limited, Zoucheng, Shandong 273500, China |
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| Abstract: | The current research situations of anchor beam support system and composite members coupling support are summarized; and the necessity and significance of coupling support research of composite members in anchor beam support system are also researched. High strength pressure relief anchor box beam support system is developed, which is guided by the support idea: controlling at first, pressure yielding behind and then resistance. The coupling efficiency weights of composite members are obtained through the method of analytic hierarchy process; and utilization ratio of whole performance, coupling efficiency and control effect of surrounding rock of members in support system are put forward. The results of thirteen numerical test schemes show that coupling efficiency of Ⅱ12c+? 22 cable, Ⅱ12b+? 22 cable and Ⅱ12a+? 17.8 cable support system are good; the coupling efficiency of support system is markedly affected by cable type; increasing prestressing force is good for raising whole utilization ratio and coupling efficiency, and improving control effect of surrounding rock. The force measuring anchor box beams are designed and made; and the Ⅱ12b+? 22 anchor beam support system is applied to field test. Monitoring results show that the utilization ratio of whole performance is 54.51%; the coupling efficiency of members is 75.61%; members of system keep pace with each other in load supporting; roof settlement in coal roadway is 148 mm and walls displacement of roadway is 180 mm; and surrouding rock deformation is controlled well during roadway excavation. |
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| Keywords: | box supporting beam anchor yielding link composite members coupling efficiency numerical test field test |
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