孤岛工作面沿空掘巷矿压特征研究及工程应用

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摘要孤岛工作面沿空掘巷矿压显现剧烈，支护难度大。若支护参数设计不当，巷道支护失败，必将极大影响工作面安全回采。以淮南潘三矿1251(3)孤岛工作面回风巷为工程背景，采用FLAC3D软件研究孤岛工作面沿空掘巷超前支承压力分布特征。通过建立孤岛工作面沿空掘巷基本顶的力学模型，推导出受动压影响时巷道顶板下沉量的计算公式。研究结果表明，孤岛工作面超前支承压力增加明显，孤岛工作面沿空掘巷围岩变形量剧增，其支护难度大大增加。在获得以上研究结果的基础上，分别对试验巷道掘进期间支护参数和回采期间加固参数进行设计。工程实践表明，锚网索和注浆加固联合支护可有效地控制孤岛工作面沿空掘巷围岩的变形，研究结果可在类似条件下推广应用。

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关键词 ：采矿工程, 孤岛工作面, 沿空掘巷, 矿压特征, 围岩变形

Abstract：Due to the severe strata pressure characteristic of the gob-side entry driving in the island mining face and the difficulty in supporting roadway，if supporting parameters of the gob-side entry driving are improperly designed，and roadway support fails，the mining safety will be greatly affected. Taking the return airway of No. 1251(3) island mining face as project background，3-dimensional fast Lagrange analysis of continua (FLAC3D) is adopted to study the distribution characteristics of advance abutment pressure in the island mining face. The mechanical model of main roof of the gob-side entry driving in the island mining face is established. By the mechanical model，the calculating formula of roof convergence affected by the dynamic pressure is derived. The study results show that when the advance abutment pressure of the island mining face increases obviously，the surrounding rock deformation of gob-side entry driving in the island mining face increases dramatically，which adds to the difficulty in supporting roadway. Based upon the above study results，the supporting parameters of roadway during the periods of roadway driving and mining are separately designed. The engineering practices show that the combining support of bolting，cable，wire mesh，and grouting can effectively control the surrounding rock deformation of the gob-side entry driving in the island mining face. The results can be generalized for roadway support under similar conditions.

Key words： mining engineering island mining face gob-side entry driving strata pressure characteristic surrounding rock deformation

收稿日期: 2010-12-29

引用本文:

华心祝1，刘淑2，刘增辉1，查文华1，李迎富1. 孤岛工作面沿空掘巷矿压特征研究及工程应用[J]. 岩石力学与工程学报, 2011, 30(8): 1646-1651.
HUA Xinzhu1，LIU Shu2，LIU Zenghui1，ZHA Wenhua1，LI Yingfu1. RESEARCH ON STRATA PRESSURE CHARACTERISTIC OF GOB-SIDE ENTRY DRIVING IN ISLAND MINING FACE AND ITS ENGINEERING APPLICATION. , 2011, 30(8): 1646-1651.

链接本文:

http://www.rockmech.org/CN/Y2011/V30/I8/1646

[1]	秦忠诚，王同旭. 深井孤岛综放工作面跨采软岩巷道合理支护技术[J]. 煤炭科学技术，2003，31(5)，7-10.(QIN Zhongcheng，WANG Tongxu. Rational support technology of soft rock gateway for cross mining of fully mechanized caving face in deep mine island[J]. Coal Science and Technology，2003，31(5)：7-10.(in Chinese)) " target="_blank">
[4]	王同旭，刘传孝，王小平. 孤岛煤柱侧向支承压力分布的数值模拟与雷达探测研究[J]. 岩石力学与工程学报，2002，21(增2)：2 484- 2 487.(WANG Tongxu，LIU Chuanxiao，WANG Xiaoping. FLAC3D numerical simulation and radar detection of lateral abutment pressure distribution of isolated coal pillar[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(Supp.2)：2 484-2 487.(in Chinese)) " target="_blank">
[6]	柏建彪. 沿空掘巷围岩控制[M]. 徐州：中国矿业大学出版社，2006：13-20.(BAI Jianbiao. Surrounding rock control of the gob-side entry driving[M]. Xuzhou：China University of Mining and Technology Press，2006：13-20.(in Chinese)) " target="_blank">
[2]	秦忠诚，王同旭. 深井孤岛综放面支承压力分布及其在底板中的传递规律[J]. 岩石力学与工程学报，2004，23(7)：1 127-1 131.(QIN Zhongcheng，WANG Tongxu. Abutment pressure distribution and its transfer law in floor of deep isolated fully-mechanized mining faces using sublevel caving[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(7)：1 127-1 131.(in Chinese)) " target="_blank">
[3]	刘长友，黄炳香，孟祥军，等. 超长孤岛综放工作面支承压力分布规律研究[J]. 岩石力学与工程学报，2007，26(增1)：2 761-2 766. (LIU Changyou，HUANG Bingxiang，MENG Xiangjun，et al. Research on abutment pressure distribution law of overlength isolated fully- mechanized top coal caving face[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(Supp.1)：2 761-2 766.(in Chinese)) " target="_blank">
[5]	李文峰，柏建彪，伊西锋，等. 孤岛煤柱下沿空掘巷底鼓机制及控制技术[J]. 煤炭科学技术，2010，38(4)：17-20.(LI Wenfeng，BAI Jianbiao，YI Xifeng，et al. Study on floor heave mechanism and control technology for goaf-side gateway driving under coal pillars of seam island[J]. Coal Science and Technology，2010，38(4)：17-20. (in Chinese)) " target="_blank">
[8]	侯朝炯，勾攀峰. 巷道锚杆支护围岩强度强化机制研究[J]. 岩石力学与工程学报，2000，19(3)：342-345.(HOU Chaojiong，GOU Panfeng. Mechanism study on strength enhancement for the rocks surrounding roadway supported by bolt[J]. Chinese Journal of Rock Mechanics and Engineering，2000，19(3)：342-345.(in Chinese))
[10]	钱鸣高，石平五. 矿山压力与岩层控制[M]. 徐州：中国矿业大学出版社，2003：243-244.(QIAN Minggao，SHI Pingwu. Mine stress and ground control[M]. Xuzhou：China University of Mining and Technology Press，2003：243-244.(in Chinese)) " target="_blank">
[7]	钱鸣高，缪协兴，许家林. 岩层控制的关键层理论[M]. 徐州：中国矿业大学出版社，2000：87-91.(QIAN Minggao，MIAO Xiexing，XU Jialin，et al. Key strata theory in ground control[M]. Xuzhou：China University of Mining and Technology Press，2000：87-91.(in Chinese)) " target="_blank">
[9]	柏建彪，张金亮，王龙芳. 孤岛综放面巷道支护机制和技术研究[J]. 矿山压力与顶板管理，2002，(4)：5-7.(BAI Jianbiao，ZHANG Jinliang，WANG Longfang. Roadway supporting mechanism and technology in fully mechanized caving island face[J]. Ground Pressure and Strata Control，2002，(4)：5-7.(in Chinese)) " target="_blank">
[11]	缪协兴，钱鸣高. 超长综放工作面覆岩关键层破断特征及对采场矿压的影响[J]. 岩石力学与工程学报，2003，22(1)：45-47.(MIAO Xiexing，QIAN Minggao. Broken feature of key strata and its influence on rock pressure in overlength fully-mechanized coal face[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(1)：45-47.(in Chinese))
[12]	曹胜根，缪协兴. 超长综放工作面采场矿山压力控制[J]. 煤炭学报，2001，26(6)：621-625.(CAO Shenggen，MIAO Xiexing. Ground pressure controlling on overlength fully mechanized mining face with top coal caving[J]. Journal of China Coal Society，2001，26(6)：621-625.(in Chinese)) " target="_blank">