铁路下综采放顶煤地表沉陷规律及其变形控制措施研究的开题报告摘要随着我国经济的不断发展和城市化进程的加快，对煤炭的需求日益增加。然而，目前我国的煤炭开采主要依赖于传统的地下采矿方式，这种方式存在安全风险、破坏环境等问题，严重限制了煤炭采掘的发展。因此，随着综合采矿技术的不断发展，煤炭开采方式也在不断改进和创新。本文针对铁路下综采放顶煤地表沉陷规律及其变形控制措施开展研究。首先，通过文献资料的分析，介绍了综合采矿的基本概念以及其在煤炭开采领域的应用情况。接着，介绍了综采放顶煤的采掘过程及其引起的地表沉陷和变形问题。然后，利用数学和物理模型，从有限元方法、构造力学等角度分析了地表沉陷的形成机制及规律。最后，针对综采放顶煤地表沉陷和变形问题，提出了相应的控制措施，以减少对周围环境的影响，确保安全生产。本研究的意义在于深入探究铁路下综采放顶煤地表沉陷规律及其变形控制措施，为煤炭开采技术的进一步完善提供了参考和依据。关键词：综合采矿；放顶煤；地表沉陷；有限元方法；构造力学；变形控制AbstractWiththecontinuousdevelopmentofChina'seconomyandtheaccelerationofurbanizationprocess,thedemandforcoalisincreasingdaybyday.However,thecurrentcoalmininginChinamainlyreliesontraditionalundergroundminingmethods,whichhassafetyrisksandenvironmentaldamageproblems,seriouslyrestrictingthedevelopmentofcoalmining.Therefore,withthecontinuousdevelopmentofintegratedminingtechnology,coalminingmethodsarealsoconstantlyimprovingandinnovating.Thispaperfocusesonthestudyofthelawofsurfacesubsidenceanddeformationcontrolmeasuresoftopcoalcavinginundergroundcomprehensiveminingunderrailways.Firstly,thebasicconceptofcomprehensivemininganditsapplicationincoalminingindustryareintroducedthroughliteratureanalysis.Then,thecoalminingprocessoftopcoalcavingandthesurfacesubsidenceanddeformationproblemscausedbyitareintroduced.Next,theformationmechanismandlawofsurfacesubsidenceareanalyzedfromtheperspectiveoffiniteelementmethodandstructuralmechanics.Finally,correspondingcontrolmeasuresareproposedforsurfacesubsidenceanddeformationproblemsoftopcoalcavingtominimizetheimpactonthesurroundingenvironmentandensuresafetyproduction.Thesignificanceofthisstudyistoexploreindepththelawofsurfacesubsidenceanddeformationcontrolmeasuresoftopcoalcavinginundergroundcomprehensiveminingunderrailways,andtoprovidereferenceandbasisforthefurtherimprovementofcoalminingtechnology.Keywords:integratedmining;topcoalcaving;surfacesubsidence;finiteelementmethod;structuralmechanics;deformationcontrol.