典型留巷顶板条件下巷旁充填体支护阻力分析

›› 2011, Vol. 32 ›› Issue (9): 2778-2784.

典型留巷顶板条件下巷旁充填体支护阻力分析

阚甲广^{1, 2}，张农^{1, 2}，李宝玉^{1, 2}，司光耀^{1, 2}

1. 中国矿业大学矿业工程学院煤炭资源与安全开采国家重点实验室，江苏徐州 221116； 2. 淮南矿业（集团）有限责任公司，深部煤炭开采与环境保护国家重点实验室，安徽淮南 232001

收稿日期:2011-03-31 出版日期:2011-09-10 发布日期:2011-09-13
作者简介:阚甲广，男，1983年生，博士，主要从事巷道围岩控制研究及教学工作
基金资助:
国家重点基础研究发展计划资助(No. 2011CB201200)；江苏高校优势学科建设工程资助项目、中央高校基本科研业务费专项资金（No.2010QNA29）；煤炭资源与安全开采国家重点实验室（中国矿业大学）自主研究课题（No. SKLCRSM09X03）

Analysis of supporting resistance of backfilling wall for gob-side entry retaining under typical roof conditions

KAN Jia-guang^{1, 2}，ZHANG Nong^{1, 2}，LI Bao-yu^{1, 2}，SI Guang-yao^{1, 2}

1. School of Mining, State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China; 2. State Key Laboratory of Deep Coal Mining & Environment Protection, Huainan Mining Industry(Group) Co., Ltd., Huainan, Anhui 232001, China

Received:2011-03-31 Online:2011-09-10 Published:2011-09-13

摘要/Abstract

摘要： 将工程实践中接触到的留巷顶板分为厚层直接顶、薄层直接顶和无直接顶3种类型，利用叠加连续层板模型，考虑巷帮煤体承载作用和导致顶板垮落诱因，得出了3种顶板条件下的巷旁支护阻力计算公式。研究表明，巷帮煤体、充填区域顶板承载性能的提高有助于降低巷旁充填体支护阻力。随直接顶厚度的减小，充填体支护阻力反而增大。基本顶层位不同，顶板垮落诱因不同。厚层直接顶时，顶板垮落为自重引起；薄层直接顶时，顶板垮落为基本顶上位岩层作用所致

关键词: 沿空留巷, 顶板结构, 巷旁充填体, 支护阻力

Abstract: The common field gob-side entry retaining roofs are divided into three types, i.e. thick immediate roof, thin immediate roof and without immediate roof. Through utilizing the continuous laminate model and considering the factors of the support effect of the coal side in the roadway, the incentives of roof caving, etc., the calculation formulas of roadside support resistance under three kinds of roof conditions are obtained. According to the formulas, the increase bearing ability of coal side and the roof of filling areas benefit to decrease the support resistance of filling body beside roadways. With the decrease of the thickness of immediate roof, the support resistance of filling body increase.The roof collapse’s incentives would vary from different layers of immediate roof. Gravity causes the thick immediate roof’s collapses; and on the other hand, the movement of upper rock layers causes the thin immediate roof’s collapses.

Key words: gob-side entry retaining, roof structure, backfilling wall, support resistance

中图分类号:

TD 322

阚甲广，张农，李宝玉，司光耀. 典型留巷顶板条件下巷旁充填体支护阻力分析[J]. , 2011, 32(9): 2778-2784.

KAN Jia-guang ，ZHANG Nong ，LI Bao-yu ，SI Guang-yao. Analysis of supporting resistance of backfilling wall for gob-side entry retaining under typical roof conditions[J]. , 2011, 32(9): 2778-2784.

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