饱水时间对千秋煤矿2#煤层冲击倾向性指标的影响

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摘要为分析饱水时间对煤体的力学性质与冲击倾向性指标的影响，对千秋煤矿2#煤层自然和饱水7～28 d处理后煤样，在RMT–150B岩石力学试验系统进行冲击倾向性指标测定。结果表明：在自然与饱水状态下，煤样的抗压强度与弹性模量、峰前积蓄能量和冲击能量指数均成正相关。饱水煤样的抗压强度、弹性模量、冲击能量指数以及峰前积蓄能量均有不同程度降低。饱水7～10 d后煤的力学性质和冲击倾向性指标变化显著，而后有所减缓。在自然含水状态下，2#煤层属于中等冲击类(II类)，饱水7～28 d后2#煤层的冲击倾向性指标有较大降低，由中等冲击类变为弱冲击类(弱II类)；建议千秋煤矿采煤工作面注水超前时间7～10 d，超前距离约30 m为宜。

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关键词 ：采矿工程, 冲击地压, 饱水, 冲击倾向性, 弹性能量, 冲击能量, 动态破坏时间

Abstract：To analyze the influence of saturation period on the mechanical properties and bursting liability indices of coal mass，the bursting liability indices were tested on the specimens of coal seam #2 in Qianqiu coal mine with natural water content and saturation for 7–28 d，respectively. The results show that，under natural and saturation states，the elastic modulus，impact energy index and pre-peak accumulated energy of the coal specimens are all positively correlated with the compression strength. Water saturation of the coal specimens can decrease their compression strength，elastic modulus，impact energy index and pre-peak accumulated energy in different degrees. The saturation period of 7–10 d for the coal specimens has a significant effect on their mechanical properties and bursting liability indices；after then，the influence degree would decrease. Under natural state，the bursting liability of coal seam #2 belongs to moderate impact type(type II). After the saturation period of 7–28 d，the bursting liability index decreases obviously，and becomes weak impact type(weak type II). Therefore，it is suggested that the water should be injected about 7–10 d in advance at the coal face of Qianqiu coal mine，and the distance in front of the face should be about 30 m.

Key words： mining engineering rockburst water saturation bursting liability elastic energy impact energy dynamic failure time

收稿日期: 2013-04-08

引用本文:

苏承东1，翟新献1，魏向志2，李宝富1. 饱水时间对千秋煤矿2#煤层冲击倾向性指标的影响[J]. 岩石力学与工程学报, 2014, 33(2): 235-242.
SU Chengdong1，ZHAI Xinxian1，WEI Xiangzhi2，LI Baofu1. INFLUENCE OF SATURATION PERIOD ON BURSTING LIABILITY INDICES FOR COAL SEAM #2 IN QIANQIU COAL MINE. , 2014, 33(2): 235-242.

链接本文:

http://www.rockmech.org/CN/Y2014/V33/I2/235

[1]	中华人民共和国行业标准编写组. GT/T25217.2—2010煤层冲击倾向性分类及指数的测定方法[S]. 北京：中国标准出版社，2010.(The Professional Standards Compilation Group of People¢s Republic of China. GT/T25217.2—2010. Classification and laboratory test method on bursting liability of coal[S]. Beijing：Standards Press of China，2010.(in Chinese)) " target="_blank">
[2]	潘结南. 煤岩单轴压缩变形破坏机制及与其冲击倾向性的关系[J].煤矿安全，2006，37(8)：1-4.(PAN Jienan. Relationship between deformation and failure of coal and its burst potential under uniaxial compression[J]. Safety in Coal Mines，2006，37(8)：1-4.(in Chinese))
[5]	齐庆新，彭永伟，李宏艳，等. 煤岩冲击倾向性研究[J]. 岩石力学与工程学报，2011，35(Supp.1)：2 736-2 742.(QI Qingxin，PENG Yongwei，LI Hongyan，et al. Study of bursting liability of coal and rock[J]. Chinese Journal of Rock Mechanics and Engineering，2011，35(Supp.1)：2 736-2 742.(in Chinese))
[6]	张绪言，康立勋，杨双锁. 煤岩冲击倾向性与剩余能量释放速度的关系[J]. 煤矿安全，2009，(2)：74-76.(ZHANG Xuyan，KANG Lixun，YANG Shuangsuo. Relation of residual energy delivery speed and bursting liability[J]. Safety in Coal Mines，2009，(2)：74-76.(in Chinese))
[8]	潘一山，耿琳，李忠华. 煤层冲击倾向性与危险性评价指标研究[J]. 煤炭学报，2010，35(12)：1 975-1 978.(PAN Yishan，GENG Lin，LI Zhonghua. Research on evaluation indices for impact tendency and danger of coal seam[J]. Journal of China Coal Society，2010，35(12)：1 975-1 978.(in Chinese))
[11]	孟召平，潘结南，刘亮亮，等. 含水量对沉积岩力学性质及其冲击倾向性的影响[J]. 岩石力学与工程学报，2009，28(增1)：2 637- 2 643.(MENG Zhaoping，PAN Jienan，LIU Liangliang，et al. Influence of moisture contents on mechanical properties of sedimentary rock and its bursting potential[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(Supp.1)：2 637-2 643.(in Chinese))
[14]	李宏艳. 煤岩物理力学性质与冲击倾向性关系[J]. 煤矿开采，2011，16(3)：43-46.(LI Hongyan. Physical and mechanical property of coal and rock and its relationship with rockburst liability[J]. Coal Mining Technology，2011，16(3)：43-46.(in Chinese))
[15]	刘剑，何鹏，王琛，等. 沉积岩岩石软化系数异常原因分析[J]. 西部探矿工程，2009，(11)：15-18.(LIU Jian，HE Peng，WANG Chen，et al. Sedimentary rocks of abnormal softening coefficient[J]. West-China Exploration Engineering，2009，(11)：15-18.(in Chinese)) " target="_blank">
[16]	刘忠锋，康天合，鲁伟，等. 煤层注水对煤体力学特性影响的试验[J]. 煤炭科学技术，2010，38(1)：17-19.(LIU Zhongfeng，KANG Tianhe，LU Wei，et al. Experiment on water injection affected on mechanics features of coal body[J]. Coal Science and Technology，2010，38(1)：17-19.(in Chinese))
[17]	潘俊锋，宁宇，蓝航，等. 基于千秋矿冲击性煤样浸水时间效应的煤层注水方法[J]. 煤炭学报，2012，37(增1)：19-25.(PAN Junfeng，NING Yu，LAN Hang，et al. Water injection methods in coal bed based on experiments of water immersion time effect of Qianqiu coal samples with burst trend[J]. Journal of China Coal Society，2012，37(Supp.1)：19-25.(in Chinese))
[9]	唐礼忠，王文星. 一种新的岩爆倾向性指数[J]. 岩石力学与工程学报，2002，21(6)：874-878.(TANG Lizhong，WANG Wenxing. New rockburst proneness index[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(6)：874-878.(in Chinese)) " target="_blank">
[12]	熊德国，赵忠明，苏承东，等. 饱水对煤系地层岩石力学性质影响的试验研究[J]. 岩石力学与工程学报，2011，30(5)：999-1 003. (XIONG Deguo，ZHAO Zhongming，SU Chengdong，et al. Experimental study of effect of water-saturated state on mechanical properties of rock in coal measure strata[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(5)：999-1 003.(in Chinese))
[3]	郭建卿，苏承东. 不同煤试样冲击倾向性试验结果分析[J]. 煤炭学报，2009，34(7)：898-902.(GUO Jianqing，SU Chengdong. Analysis of experimental results of rockburst tendency to different coal samples[J]. Journal of China Coal Society，2009，34(7)：898-902.(in Chinese))
[4]	祝方才，潘长良，郭然. 一个新的岩爆倾向性指标——有效冲击能指标[J]. 矿山压力与顶板管理，2002，19(3)：83-84.(ZHU Fangcai，PAN Changliang，GUO Ran. New rockburst index—effective impact energy index[J]. Ground Pressure and Strata Control，2002，19(3)：83-84.(in Chinese)) " target="_blank">
[13]	茅献彪，陈占清，徐思朋，等. 煤层冲击倾向性与含水率关系的试验研究[J]. 岩石力学与工程学报，2001，20(1)：49-52.(MAO Xianbiao，CHEN Zhanqing，XU Sipeng，et al. Experimental study on the relation between the burst tendency and water content in coal seam[J]. Chinese Journal of Rock Mechanics and Engineering，2001，20(1)：49-52.(in Chinese))
[7]	唐礼忠，潘长良，王文星. 用于分析岩爆倾向性的剩余能量指数[J]. 中南工业大学学报，2002，33(2)：129-132.(TANG Lizhong，PAN Changliang，WANG Wenxing. Surplus energy index for analyzing rockburst proneness[J]. Journal of Central South University of Technology，2002，33(2)：129-132.(in Chinese))
[10]	赵毅鑫，姜耀东，张雨. 冲击倾向性与煤体细观结构特征的相关规律[J]. 煤炭学报，2007，33(1)：64-68.(ZHAO Yixin，JIANG Yaodong，ZHANG Yu. The relationship between bump-prone property and microstructure characteristics of coal[J]. Journal of China Coal Society，2007，33(1)：64-68.(in Chinese))