铁道工程学报
鐵道工程學報
철도공정학보
JOURNAL OF THE RAILWAY ENGINEERING SOCIETY
2013年
11期
23-26
,共4页
吴圣智%段宝福%朱应磊%李焕振
吳聖智%段寶福%硃應磊%李煥振
오골지%단보복%주응뢰%리환진
GM(1 ,1 )模型%背景值优化%小导管注浆%围岩收敛
GM(1 ,1 )模型%揹景值優化%小導管註漿%圍巖收斂
GM(1 ,1 )모형%배경치우화%소도관주장%위암수렴
GM(1,1 )model%optimization of background value%small duct grouting%the surrounding rock convergence
研究目的:小导管注浆能有效的提高围岩稳定性,但在现实施工中,导管注浆到围岩稳定往往存在一段时间差,因此提前预测围岩注浆效果有着十分重要的现实意义。GM(1,1)模型可以作为相对简洁的围岩变化时间函数应用于注浆后围岩敛散的预测,但传统的 GM(1,1)模型在地质条件复杂的围岩注浆效果预测中存在局限性。本文对传统灰色理论模型的背景值做了改进,力图通过改进后的模型更加准确的预测注浆后围岩变化趋势,从而指导后续施工。<br> 研究结论:(1)GM(1,1)模型可以比较准确的预测注浆后的注浆效果,模型预测的精确性与围岩影响因素、围岩的复杂程度有关;(2)基于背景值改进后的 GM(1,1)模型精确度的提高取决于与原模型的预测精度,改进后的模型适用于影响因素多,变化更加复杂的围岩;(3)本文结合工程实例,将计算值与实际值做了对照,验证了改进后灰色模型的精确性,可以为今后隧道围岩注浆效果的预测提供一定的参考。
研究目的:小導管註漿能有效的提高圍巖穩定性,但在現實施工中,導管註漿到圍巖穩定往往存在一段時間差,因此提前預測圍巖註漿效果有著十分重要的現實意義。GM(1,1)模型可以作為相對簡潔的圍巖變化時間函數應用于註漿後圍巖斂散的預測,但傳統的 GM(1,1)模型在地質條件複雜的圍巖註漿效果預測中存在跼限性。本文對傳統灰色理論模型的揹景值做瞭改進,力圖通過改進後的模型更加準確的預測註漿後圍巖變化趨勢,從而指導後續施工。<br> 研究結論:(1)GM(1,1)模型可以比較準確的預測註漿後的註漿效果,模型預測的精確性與圍巖影響因素、圍巖的複雜程度有關;(2)基于揹景值改進後的 GM(1,1)模型精確度的提高取決于與原模型的預測精度,改進後的模型適用于影響因素多,變化更加複雜的圍巖;(3)本文結閤工程實例,將計算值與實際值做瞭對照,驗證瞭改進後灰色模型的精確性,可以為今後隧道圍巖註漿效果的預測提供一定的參攷。
연구목적:소도관주장능유효적제고위암은정성,단재현실시공중,도관주장도위암은정왕왕존재일단시간차,인차제전예측위암주장효과유착십분중요적현실의의。GM(1,1)모형가이작위상대간길적위암변화시간함수응용우주장후위암렴산적예측,단전통적 GM(1,1)모형재지질조건복잡적위암주장효과예측중존재국한성。본문대전통회색이론모형적배경치주료개진,력도통과개진후적모형경가준학적예측주장후위암변화추세,종이지도후속시공。<br> 연구결론:(1)GM(1,1)모형가이비교준학적예측주장후적주장효과,모형예측적정학성여위암영향인소、위암적복잡정도유관;(2)기우배경치개진후적 GM(1,1)모형정학도적제고취결우여원모형적예측정도,개진후적모형괄용우영향인소다,변화경가복잡적위암;(3)본문결합공정실례,장계산치여실제치주료대조,험증료개진후회색모형적정학성,가이위금후수도위암주장효과적예측제공일정적삼고。
Research purposes:The advanced small pipe grouting can effectively improve the stability of surrounding rock,however,there is a long time to reach the stability of surrounding rock after grouting in actual construction,so predicting grouting effect of surrounding rock early is of great practical significance.GM(1 ,1 )model,as a relatively simple time function of surrounding rock variation,can be used to predict the divergence of surrounding rock.However, the traditional GM(1 ,1 )model has limitations in complex geological conditions.This paper changes the old model and makes it better ,which is helpful for guiding the follow -up construction. <br> Research conclusions:(1 )GM(1 ,1 )model can accurately predict the grouting effect,and its accuracy relates to the influence factors and complexity of surrounding rock.(2)The degree of improvement of GM (1 ,1 )model based on optimization of background value depends on the prediction accuracy of the model.The improved model is suitable for complex surrounding rock which has more influence factors.(3 ) This paper based the engineering example,the calculation was compared with the actual value to verify the accuracy of the improved grey model,which can provide some reference to predict the grouting effect of surrounding rock.