پیشبینی نرخ نفوذ دستگاه حفاری تونل (TBM) به کمک ویژگیهای زمین شناسی سنگهای مسیر تونل باعث توسعه مدلهای تجربی نرخ نفوذ شده است. در این پژوهش ارتباط بین فاکتورهای زمین شناسی تراشه شدن سنگها شامل: کانی شناسی، اندازه دانه، فابریک دانه با نرخ نفوذ و سیستمهای طبقهبندی تودهسنگ مورد بررسی قرار گرفته است. برای این هدف از دادههای واحدهای زمین شناسی مهندسی مسیر تونل انتقال آب گلاس در نزدیکی شهرستان نقده استفاده شده است. ارزیابی فاکتورهای تراشه شدن سنگها با روشهای آماری رگرسیون ساده، رگرسیون چندگانه خطی و غیرخطی انجام شده است. بهترین رابطه رگرسیونی چندگانه غیرخطی بین نرخ نفوذ با تراشه شدن (CP1) و شاخص کیفیت تودهسنگ (RQD)، با ضریب تعیین0.816 و درصد میانگین خطای مطلق (MAPE) برابر با 8.821 برقرار است. براساس حد و مرزهای ژئوتکنیکی پیشنهاد شده، بیشترین نرخ نفوذ (بیش از 8 میلی متر بر دور) در فاکتور تراشه شدن کمتر از 1500 و کمترین نرخ نفوذ (کمتر از 3 میلیمتر بر دور) در فاکتور تراشه شدن بیشتر از 4000 رخ داده است. نتایج بدست آمده در این پژوهش میتواند به پیشبینی دقیقتر نرخ نفوذ TBM و کاهش هزینه و زمان حفاری کمک کند.
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