| 复采条带煤柱沿空掘巷稳定性研究 |
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| 引用本文： | 曹忠,李秀山,常显东,陈绍杰.复采条带煤柱沿空掘巷稳定性研究[J].山东科技大学学报(自然科学版),2009,28(4):64-68. |
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| 作者姓名： | 曹忠 李秀山 常显东 陈绍杰 |
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| 作者单位： | 1. 淄博矿业集团,岱庄煤矿,山东,济宁,272175
2. 山东科技大学,矿山灾害预防控制教育部重点实验室,山东,青岛,266510 |
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| 基金项目： | 国家自然科学基金项目，教育部博士点基金项目，山东省自然科学基金项目 |
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| 摘 要： | 详细分析了条带煤柱复采时沿空掘巷的支护特点。预板锚杆对沿空掘巷的总体稳定性无法起到有效的控制作用，只有提高围岩的强度，发挥围岩的自承能力才能对巷道起到有效的支护作用。针对岱庄煤矿矿2351工作面的具体地质条件确定了具体的支护方式。通过对巷道的支护效果监测分析在该支护方式下，巷道两帮及预板在巷遭开挖初期变形明显，两帮变形尤其是非生产帮变形明显大于项板变形；由于采空区上方顶板跨落倾斜作用于非生产帮外侧，非生产帮2．2m处所受压力大于1．0m处所受压力；巷道掘进完成以后变形和压力仍然有所增加，但最终趋于稳定。研究表明采用高强度左旋连续螺纹锚杆加低松弛预应力错索的联合支护方式能够保证巷道两帮及顶板围岩的稳定性。
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| 关 键 词： | 条带煤柱 复采 沿空掘巷 联合支护 岱庄煤矿 |
Research on Stability of Roadways Driving along Next Goaf in Repeated Mining of Strip Pillar |
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| CAO Zhong,LI Xiu-shan,CHANG Xian-dong,CHEN Shao-jie.Research on Stability of Roadways Driving along Next Goaf in Repeated Mining of Strip Pillar[J].Journal of Shandong Univ of Sci and Technol: Nat Sci,2009,28(4):64-68. |
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| Authors: | CAO Zhong LI Xiu-shan CHANG Xian-dong CHEN Shao-jie |
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| Institution: | 1.Daizhuang Coalmine;Zibo Mining Group;Jining;Shandong 272175;China;2.Key Laboratory of Mining Disaster Prevention and Control;Ministry of Education;SUST;Qingdao;Shandong 266510;China |
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| Abstract: | The supporting characteristics of roadways driving along next goaf in repeated mining of strip pillar were analyzed.There is no effective action for roof bolt to control general stability of roadways driving along next goaf,and the only way to promote the supporting effect for roadways is to improve the strength of surrounding rock and develop its self-bearing ability.The specific support pattern of No.2351 Coalface was determined according to the actual geological conditions.The monitoring results of roadw... |
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| Keywords: | strip pillar repeated mining roadway driving along next goaf combined support Daizhuang Colliery |
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