基于流态转换理论巷道前伏溶洞突水的流固耦合–强度折减法分析

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摘要引入承压溶洞突水的管道流折算渗透系数，构建耦合非线性渗流–管道流于一体的承压溶洞突水全过程分析模型，在此基础上建立巷道前伏溶洞突水过程的流固耦合–强度折减法联动分析方法，研究承压溶洞突水全过程的流态转换机制。以七一煤矿石坝井承压溶洞突水事故为例，探讨防水岩柱的力学失稳机制和突水演化过程。研究表明：防水岩柱失稳前岩溶水非线性渗流，随着岩柱折减系数的增加，工作面渗水量增大，防水岩柱失稳后，溶洞水体突出，涌入巷道形成管道流。采用管道流模拟得到突水量在较短时间内达到峰值，由于溶洞水体储量供给约束，突水量逐渐减少，由突水初期的粗糙紊流最终变为管道层流。引入防水岩柱安全系数的概念，研究防水岩柱安全系数与溶洞内压、岩柱厚度的关系，将安全系数为1.5的岩柱厚度作为防水岩柱的计算安全厚度，提出防水岩柱工程留设厚度等于炮眼深度、爆破扰动深度和防水岩柱计算安全厚度之和的设计方法。将岩体流–固耦合理论、流态转换理论和强度折减法结合起来研究承压溶洞突水的非线性力学响应，为研究承压溶洞突水全过程提供了一种新的研究方法。

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关键词 ：岩石力学, 溶洞突水, 防水岩柱, 流固耦合, 强度折减法

Abstract：With the introduction of the equivalent hydraulic conductivity of pipe flow for the water inrush of confined karst cave，a nonlinear model of coupled seepage-pipe flows was established to simulate the entire process of water inrush. The model was combined with the strength reduction method and solid mechanics to study the change of flow state of water inrush of confined karst cave. The instability of water blocking rock pillar and the water inrush occurred at Qiyi mine in south China were discussed. The water discharge from the working front increased with the increasing of the reduction factor of the strength of the water block rock pillar before the rock pillar losing its stability. After the failure of the rock pillar，water burst out from the confined karst cave to form pipe flow. The amount of the water irrupted reached the peak value in a short time then decreased slowly according to the simulation. The turbulent flow at the initial stage was changed into the laminar pipe flow finally due to the limited water reserve of the karst cave. The safety factor of water blocking rock pillar was introduced and the relations of the safety factor，the water pressure in the karst cave and the thickness of the water blocking rock pillar were studied. The thickness of the water blocking rock pillar with the safety factor of 1.5 was proposed to be the calculated safety thickness. The safety thickness of the water blocking rock pillar was proposed to be equal to the sum of the depth of blasting hole，the depth of blasting disturbance and the calculated safety thickness.

Key words： rock mechanics karst cave water inrush water blocking rock pillar solid-fluid coupling shear strength reduction method

收稿日期: 2014-04-28

引用本文:

赵延林1，2，3，张盛国1，2，万文1，2，王卫军1，2，蔡璐1，2，彭青阳1，2. 基于流态转换理论巷道前伏溶洞突水的流固耦合–强度折减法分析[J]. 岩石力学与工程学报, 2014, 33(09): 1852-1862.
ZHAO Yanlin1，2，3， ZHANG Shengguo1，2，WAN Wen1，2，WANG Weijun1，2，CAI Lu1，2，PENG Qingyang1，2. SOLID-FLUID COUPLING-STRENGTH REDUCTION METHOD FOR KARST CAVE WATER INRUSH BEFORE ROADWAY BASED ON FLOW STATE CONVERSION THEORY. , 2014, 33(09): 1852-1862.

链接本文:

http://www.rockmech.org/CN/Y2014/V33/I09/1852

[1]	HE K Q，YU Y J，FEI W. Overview of karst geo-environments and karst water resources in north and south China[J]. Environmental Earth Sciences，2011，64(11)：1 865-1 873. " target="_blank">
[2]	李敬敬，常聚才，陈阳. 厚松散含水层下特厚煤层综放开采相似模拟[J]. 矿业工程研究，2013，28(4)：47-50.(LI Jingjing，CHANG Jucai，CHEN Yang. Similar simulation research on caving mining of extra thick coal seam under thick loose aquifer[J]. Mineral Engineering Research，2013，28(4)：47-50.(in Chinese)) " target="_blank">
[4]	汪高举. 华蓥山矿区岩溶水害防治方法探讨[J]. 华北科技学院学报，2009，6(4)：96-100.(WANG Gaoju. The discussion of karst water damage prevention in Huayingshan mine area[J]. Journal of North China Institute of Science and Technology，2009，6(4)：96-100.(in Chinese)) " target="_blank">
[5]	巫锡勇，王鹰，罗健. 侵蚀性环境水形成与地下水运动特征的关系研究[J]. 铁道学报，1998，20(4)：106-112.(WU Xiyong，WANG Ying，LUO Jian. Study of relationship between formation of corrosive environment water and movement characteristics of groundwater[J]. Journal of the China Railway Society，1998，20(4)：106-112.(in Chinese)) " target="_blank">
[8]	GOH A T C，WONG K S，BROMS B. Estimation of lateral wall movements in braced excavations using neural networks[J]. Canadian Geotechnical Journal，1995，32(6)：1 059-1 064. " target="_blank">
[9]	KIM Y，AMADEI B，PAN E. Modeling the effect of water，excavation sequence and rock reinforcement with discontinuous deformation analysis[J]. International Journal of Rock Mechanics and Mining Sciences，1999，36(7)：949-970. " target="_blank">
[10]	毛邦燕. 复杂岩溶介质矿井涌水量的三维数值模拟研究[硕士论文][D]. 成都：成都理工大学，2005.(MAO Bangyan. 3D numerical simulation for the mine discharge of complex karst mediato[M. S. Thesis][D]. Chengdu：Chengdu University of Technology，2005.(in Chinese)) " target="_blank">
[12]	国家安全生产监督管理总局，国家煤矿生产安全煤矿监检局. 煤矿防治水规定[M]. 北京：煤炭工业出版社，2009：59-94.(National Safety Production Main Office，National Coal Mine Production Safety Supervision Main Office. Regulation of coal mine water control[M]. Beijing：China Coal Industry Press，2009：59-94.(in Chinese)) " target="_blank">
[13]	赵延林，王卫军，黄永恒，等. 裂隙岩体渗流-损伤-断裂耦合分析与工程应用[J]. 岩土工程学报，2010，32(1)：24-31.(ZHAO Yanlin，WANG Weijun，HUANG Yongheng，et al. Coupling analysis of seepage-damage-fracture in fractured rock mass and engineering application[J]. Chinese Journal of Geotechnical Engineering，2010，32(1)：24-31.(in Chinese))
[18]	张慧梅，杨更社. 水分及冻融环境下岩石抗拉力学特性[J]. 湖南科技大学学报：自然科学版，2013，28(3)：35-40.(ZHANG Huimei，YANG Gengshe. Anti-tensile mechanical characteristics of rock under moisture and freeze-thaw condition[J]. Journal of Hunan University of Science and Technology：Natural Science，2013，28(3)：35-40.(in Chinese))
[21]	莫阳春. 高水压充填型岩溶隧道稳定性研究[博士学位论文][D]. 成都：西南交通大学，2009.(MO Yangchun. Stability research on high water pressure filled karst caves tunnel[Ph. D. Thesis][D]. Chengdu：Southwest Jiaotong University，2009.(in Chinese)) " target="_blank">
[22]	赵延林，吴启红，王卫军，等. 基于突变理论的采空区重叠顶板稳定性强度折减法及应用[J]. 岩石力学与工程学报，2010，29(7)：1 424-1 434.(ZHAO Yanlin，WU Qihong，WANG Wenjin，et al. Strength reduction method to study stability of goaf overlapping roof based on catastrophe theory[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(7)：1 424-1 434.(in Chinese)) " target="_blank">
[24]	刘猛，白峰青，王斌. 受断层影响的水库下采煤可行性分析[J]. 矿业工程研究，2014，29(1)：74-77.(LIU Meng，BAI Fenqing，WANG Bin. The feasibility analysis of coal mining under reservoir affected by fault[J]. Mineral Engineering Research，2014，29(1)：74-77.(in Chinese))
[3]	周述和. 重庆松藻煤矿茅口灰岩岩溶水害与治理[J]. 中国煤田地质，2005，17(5)：65-67.(ZHOU Shuhe. Maokou limestone karstic water flooding and harnessing in Songzao coal mine，Chongqing[J]. Coal Geology of China，2005，17(5)：65-67.(in Chinese)) " target="_blank">
[6]	潘国营，邓清海，闫芙蓉. 预测矿坑突水量的广义三重空隙介质渗流模型[J]. 煤炭学报，2003，28(5)：509-512.(PAN Guoying，DENG Qinghai，YAN Furong. Generalized triple porosity media flow model for calculating mine karst fracture water bursting discharge[J]. Journal of China Coal Society，2003，28(5)：509-512.(in Chinese))
[7]	王建秀，杨立中，何静. 岩溶塌陷演化过程中的水-土-岩相互作用分析[J]. 西南交通大学学报，36(3)：314-317.(WANG Jianxiu，YANG Lizhong，HE Jing. The coupling interaction of groundwater- soil-rockmass in karst collapse evolution[J]. Journal of Southwest Jiaotong University，2001，36(3)：314-317.(in Chinese))
[11]	王卫军，赵延林，李青锋，等. 矿井岩溶突水灾变机制[J]. 煤炭学报，2010，35(3)：443-448.(WANG Weijun，ZHAO Yanlin，LI Qingfeng，et al. Disaster mechanism of karst water bursting in mine[J]. Journal of China Coal Society，2010，35(3)：443-448.(in Chinese)) " target="_blank">
[14]	赵延林，曹平，汪亦显，等. 裂隙岩体渗流-损伤-断裂耦合模型及应用[J]. 岩石力学与工程学报，2008，27(8)：1 634-1 643.(ZHAO Yanlin，CAO Ping，WANG Yixian，et al. Coupling model of seepage- damage-fracture in fractured rock masses and its application[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(8)：1 634-1 643.(in Chinese)) " target="_blank">
[15]	赵阳升. 矿山岩石流体力学[M]. 北京：煤炭工业出版社，1994：48-53.(ZHAO Yangsheng. Rock fluid mechanics in mine[M]. Beijing：China Coal Industry Publishing House，1994：48-53.(in Chinese)) " target="_blank">
[16]	陈崇希. 岩溶管道-裂隙-孔隙三重介质地下水流模型及模拟方法研究[J]. 地球科学，1995，20(4)：361-366.(CHEN Chongxi. Groundwater flow model and simulation method in triple media of karst tube- fissure-pore[J]. Earth Science，1995，20(4)：361-366.(in Chinese)) " target="_blank">
[17]	赵坚，赖苗，沈振中. 适于岩溶地区渗流场计算的改进折算渗透系数法和变渗透系数法[J]. 岩石力学与工程学报，2005，24(8)：1 341-1 347.(ZHAO Jian，LAI Miao，SHEN Zhenzhong. Improved converting permeability coefficient method and variable permeability cofficient method for seepage calculation in Karst region[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(8)：1 341-1 347. (in Chinese))
[19]	郑文翔，赵延林，王敏. 单轴压缩条件下预制裂隙类岩石材料实验研究[J]. 湖南科技大学学报：自然科学版，2013，28(4)：1-6. (ZHENG Wenxiang，ZHAO Yanlin，WANG Min. Experimental study on rock like material with crack under uniaxial compression[J]. Journal of Hunan University of Science and Technology：Natural Science，2013，28(4)：1-6.(in Chinese))
[20]	李利平. 高风险岩溶隧道突水灾变演化机制及其应用研究[博士学位论文][D]. 济南：山东大学，2009.(LI Liping. Study on catastrophe evolution mechanism of karst water inrush and its engineering application of high risk karst tunnel[Ph. D. Thesis][D]. Jinan：Shandong University，2009.(in Chinese)) " target="_blank">
[23]	齐景岳. 爆破方法对隧道围岩稳定性的影响[J]. 铁道建筑，1979，19(7)：4-7.(QI Jingyue. The influence of tunnel blasting method on stability of surrounding rock[J]. Railway Engineering，1979，19(7)：4-7.(in Chinese))