中国矿业
中國礦業
중국광업
CHINA MINING MAGAZINE
2015年
8期
92-95,100
,共5页
乔卫国%宋伟杰%林登阁%吴多华
喬衛國%宋偉傑%林登閣%吳多華
교위국%송위걸%림등각%오다화
高应力%锚网索喷%联合支护%数值模拟%定量分析
高應力%錨網索噴%聯閤支護%數值模擬%定量分析
고응력%묘망색분%연합지호%수치모의%정량분석
high stress%bolt-anchor-shotcrete-mesh%combined support%numerical simulation%quantitative analysis
针对九龙煤矿－890m进风行人大巷复杂的工程地质情况，巷道断面较大且高应力作用显著，现已发生严重变形破坏。通过FL AC3D数值模拟对巷道围岩的力学特征进行定量分析，获得深部高应力巷道应力、应变演化特征，结合巷道周边围岩的成分分析、力学实验结果，基于FLAC3D对比优化深部高应力巷道联合支护方案，探究支护结构、支护参数的可靠性，提出以锚杆、锚索为核心的锚网索喷联合支护方案。在巷道开挖后进行矿压观测，进一步验证支护方案以及数值模拟结果的合理性，并实时监测围岩的变化特征。工程实践表明，在深部高应力巷道中采用锚网索喷联合支护，巷道的整体性与稳定性得到有效改善，围岩受力更趋稳定，变形得到有力控制，为煤矿的安全高效生产提供了技术支持。
針對九龍煤礦－890m進風行人大巷複雜的工程地質情況，巷道斷麵較大且高應力作用顯著，現已髮生嚴重變形破壞。通過FL AC3D數值模擬對巷道圍巖的力學特徵進行定量分析，穫得深部高應力巷道應力、應變縯化特徵，結閤巷道週邊圍巖的成分分析、力學實驗結果，基于FLAC3D對比優化深部高應力巷道聯閤支護方案，探究支護結構、支護參數的可靠性，提齣以錨桿、錨索為覈心的錨網索噴聯閤支護方案。在巷道開挖後進行礦壓觀測，進一步驗證支護方案以及數值模擬結果的閤理性，併實時鑑測圍巖的變化特徵。工程實踐錶明，在深部高應力巷道中採用錨網索噴聯閤支護，巷道的整體性與穩定性得到有效改善，圍巖受力更趨穩定，變形得到有力控製，為煤礦的安全高效生產提供瞭技術支持。
침대구룡매광－890m진풍행인대항복잡적공정지질정황，항도단면교대차고응력작용현저，현이발생엄중변형파배。통과FL AC3D수치모의대항도위암적역학특정진행정량분석，획득심부고응력항도응력、응변연화특정，결합항도주변위암적성분분석、역학실험결과，기우FLAC3D대비우화심부고응력항도연합지호방안，탐구지호결구、지호삼수적가고성，제출이묘간、묘색위핵심적묘망색분연합지호방안。재항도개알후진행광압관측，진일보험증지호방안이급수치모의결과적합이성，병실시감측위암적변화특정。공정실천표명，재심부고응력항도중채용묘망색분연합지호，항도적정체성여은정성득도유효개선，위암수력경추은정，변형득도유력공제，위매광적안전고효생산제공료기술지지。
Specific to Jiulong Coal Mine - 890 meters air inlet pedestrian roadway has serious deformation and destruction due to its complicated engineering geological conditions ,large chamber cross section and significant effects of high stress .The paper carried out quantitative analysis of the mechanical characteristics of surrounding rocks of roadway through FLAC3D numerical simulation to obtain deep high‐stress roadway stress and strain evolution characteristics ,combining with composition analysis ,mechanical test results of surrounding rocks of roadway .Based FLAC3D contrast optimization deep and high stress roadway combination support programs ,explore supporting structure ,supporting the reliability parameters , the author proposed the wire rope combined supporting scheme taking the anchor bolt and anchor cable as the core .Making the mine pressure observation after the roadway excavation ,further verify the rationality of the supporting scheme and the result of numerical simulation ,and monitoring the variation characteristics of surrounding rock .Engineering practice shows that adopting the bolt‐anchor‐shotcrete‐mesh combined supporting scheme in the deep roadway under high stress ,to effectively improve the integrity and the stability of the roadway .The surrounding rock stress becomes more stability ,and the deformation gets more effective control ,providing the technical support for the safety and efficient production in the coal mine .
