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三峡工程岩锚加固技术现场试验论证 被引量:4
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作者 高锋 杨启贵 《人民长江》 北大核心 1998年第1期17-18,21,共3页
为了给三峡工程大规模的岩锚施工积累经验,在三峡永久船闸的南坡,对非预应力锚杆、预应力锚杆、有粘结与无粘结预应力锚索进行了现场试验。论证了锚杆材料和预应力锚索的设计参数;探索出了适应快速施工要求的早强浆材配比;证明了无... 为了给三峡工程大规模的岩锚施工积累经验,在三峡永久船闸的南坡,对非预应力锚杆、预应力锚杆、有粘结与无粘结预应力锚索进行了现场试验。论证了锚杆材料和预应力锚索的设计参数;探索出了适应快速施工要求的早强浆材配比;证明了无粘结预应力锚索在三峡边坡加固支护中使用是可行的。岩锚试验的成果对其它类似工程的施工具有普遍的指导意义。 展开更多
关键词 岩锚加固 多级船闸 三峡水利枢纽
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Study on mechanism of reinforcing sides to control floor heave of extraction opening
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作者 冯涛 《Journal of Coal Science & Engineering(China)》 2005年第1期1-3,共3页
Roadway surrounding rock is a compound structure consisted of roof, floor and sides. The sides of extraction opening is the weak coal mass, which affect immediately the stability of floor. It was simulated by numerica... Roadway surrounding rock is a compound structure consisted of roof, floor and sides. The sides of extraction opening is the weak coal mass, which affect immediately the stability of floor. It was simulated by numerical calculation for the strength of sides coal to affect the floor heave, the higher strength of sides coal is, the lower degree of floor heave was. So it was put forward reinforcing sides to control floor heave of extraction opening, and it was proved by engineering practice that the floor heave of deep extraction opening can be controlled to a certain degree by reinforcing sides of roadway. 展开更多
关键词 extraction opening floor heave reinforcing sides
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Test analysis of stress characteristics on reinforcing rock slope with group anchorage cable 被引量:1
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作者 ZHANG Liang-liang XIA Yuan-you +2 位作者 GU Jin-cai LI Qi-min CHEN Chen 《Journal of Coal Science & Engineering(China)》 2010年第1期23-28,共6页
To research the reinforcement effect of a rock slope with group anchorage cables and the stress characteristics of pre-stressed anchorage cables in the fractured surface, the rock slope calculated model of a wedge blo... To research the reinforcement effect of a rock slope with group anchorage cables and the stress characteristics of pre-stressed anchorage cables in the fractured surface, the rock slope calculated model of a wedge block within the double-slide face was established by using the finite difference software according to the actual slope project combined with indoor model test. The pre-stress loss rule of the anchorage cable and the distribution of axial force and the force-transferring mechanism of the anchorage cable were analyzed during simulation. Also, based on the displacement contour and the safety factor of the calculated results, the quantitative analysis for the reinforcement ef- fect of the rock slope with group pre-stressed anchorage cable was discovered. The results computed by the software conform with the data in the experiment, which can prove the effectiveness and correctness of parameter selection and model building. Keywords group anchorage reinforcement, rock slope, joint fissure, pre-stressed anchorage cable, stress characteristics 展开更多
关键词 group anchorage reinforcement rock slope joint fissure pre-stressed anchorage cable stress characteristics
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