矿井快速自建移动水闸墙实验
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摘要
为了阻止老空水害事故的发生和蔓延,开展了快速自建移动水闸墙的模拟实验研究。实验以1∶100的比例,分别用固体、液体材料对巷道中有无皮带架条件下进行了正交模拟水闸墙快速、自动建筑实验。利用固体材料的高度吸水快速膨胀性和液体A、B材料充分混合迅速膨胀,实现水闸墙的快速建筑。实验研究了水闸墙对不同条件下的定制设计方法和展开、悬挂、充填、固定、移动等一整套快速自建工艺,分析了实验效果和影响因素,探讨了该技术的适用条件。实验获得了液体充填材料的水闸墙生效时间36~185 s、膨胀压力1.03~1.2 MPa、堵水率78%~99%;固体充填材料的水闸墙生效时间185~240 s、膨胀压力0.52~0.65 MPa、堵水率70%~83%的重要数据。研究表明:以液体为充填材料的水闸墙堵水效果好于固体;无皮带架巷道水闸墙的堵水效果明显好于有皮带架的。
To stop accidents of goaf water inrush frequently happened in coal mine in China,the analogue experiments were conducted on instant and automatic construction of movable floodgate wall( MFW). Under the conditions with or without belt rack,the orthogonal simulation experiments with 1: 100 ratio of real conditions in the roadway were conducted by filling with solid or liquid materials. The instant constructions of MFW were realized by taking advantage of rapid expansion when the solid material absorb water and when liquid A mixed with B. Customization design styles of MFW under different conditions,and the their opening,hanging,filling,fixing,moving technology were studied. The influencing factors on the experimental results were analyzed and the applicable conditions of the technology were discussed. The experiments show that the MFW filled in the liquid material begins to take effect in 36-185 s,the expansion pressures are 1. 03—1. 2 MPa,the water plugging rates are 78%-99%. In contrast,the time that MFW filled in the solid material takes effect is 185—240 s,the expansion pressures are 0. 52-0. 65 MPa,the water plugging rates are 70%-83%. Comparison of the two groups of the data shows that MFW filled in liquid material is better in water plugging effect than that filled in solid material; water plugging effect of MFW under the condition without the belt rack is better than that with belt rack.
To stop accidents of goaf water inrush frequently happened in coal mine in China,the analogue experiments were conducted on instant and automatic construction of movable floodgate wall( MFW). Under the conditions with or without belt rack,the orthogonal simulation experiments with 1: 100 ratio of real conditions in the roadway were conducted by filling with solid or liquid materials. The instant constructions of MFW were realized by taking advantage of rapid expansion when the solid material absorb water and when liquid A mixed with B. Customization design styles of MFW under different conditions,and the their opening,hanging,filling,fixing,moving technology were studied. The influencing factors on the experimental results were analyzed and the applicable conditions of the technology were discussed. The experiments show that the MFW filled in the liquid material begins to take effect in 36-185 s,the expansion pressures are 1. 03—1. 2 MPa,the water plugging rates are 78%-99%. In contrast,the time that MFW filled in the solid material takes effect is 185—240 s,the expansion pressures are 0. 52-0. 65 MPa,the water plugging rates are 70%-83%. Comparison of the two groups of the data shows that MFW filled in liquid material is better in water plugging effect than that filled in solid material; water plugging effect of MFW under the condition without the belt rack is better than that with belt rack.
引文
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[3]卢潮陵.高吸水树脂的研究现状及其应用前景[J].能源与环境,2011(2):7-9.
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[5]许向彬.天固封孔材料在淮南谢家集一矿的应用效果[J].矿业安全与环保,2014,41(3):61-63.
[6]关永强.水闸墙在高承压松软煤巷特大突水治理中的应用[J].煤矿安全,2014,45(2):115-118.
[7]周金城.软弱岩体内快速构筑水闸墙技术应用[J].煤矿支护,2012(3):5-8.
[8]张周权,汪善好,郑永,等.大体积特高压水闸墙施工组织设计[J].煤炭科技,2004(1):45-46.
[9]宋彦波.一种快速构筑水闸墙的方法[P].中国专利:CN102121388A.2011-7-13.
[10]宋彦波,高京泽.软煤巷道高压涌水条件下快速构筑水闸墙的方法[P].中国专利:CN1858405.2006-11-8.
[11]栾玉华,张凤芹,张正彪.全自动防水闸门[P].中国专利:CN2750042.2006-1-4.
[12]刘德利,傅小敏,郭宝德,等.高压防水闸墙[P].中国专利:CN202081916U.2011-12-21.
[13]邢会安,卢全生,荆冰川.水闸墙在注浆堵水领域中的新应用[J].中国矿业,2009,18(2):91-93.
[14]杨思光,王继承,杨家华,等.煤层巷道高压水闸墙的设计与施工[J].煤炭科学技术,2004,32(5):1-4.
[15]王海.煤矿高压水闸墙抗水压安全性研究[J].煤矿安全,2013,44(12):7-10.
[16]高盛翔,吴圣林,马洪玉.基于FLAC3D的高压水闸墙数值模拟[J].煤矿安全,2014,45(7):166-168.