Monitoring and air-driven fast-track drilling designed for emergent searching and rescuing operation in buried underground space

Abstract

如何以最快的速度搜救地下工程事故中的被困人員,是完成救援任務的關鍵,筆者提出了自動監測鉆孔過程的DPM方法。該方法在以高壓空氣作為動力的潛孔錘旋轉沖擊鉆孔中,能夠自動、連續地對鉆孔過程實時數字監測和記錄。這種智能型監測鉆孔可以實時建立沿鉆孔深度各點的巖土體力學強度與空間分布,從而準確地測定地下洞室或巷道的位置及范圍。該技術起到快速搜索以及輸送新鮮空氣的作用,鉆成的孔洞可以將食物和水傳遞給被困人員。十多年來,實際數字鉆孔監測結果表明,這項研究的確可以精確測定和給出地下巖土體的力學強度。該方法可以有效地、具體地應用到地下工程事故緊急搜救工作中。 This paper presents a brief idea for an effective searching and rescuing people trapped in sealed underground spaces such as caverns and tunnels due to collapse of surrounding rock and soil masses.The idea is based on the fast construction hole drilling and its automatic digital monitoring.The drilling device is the compressed air-flow driven percussive-rotary drilling associated with a down-the-hole hammer.The drilling process monitoring allows an accurate and effective delinearing of the soil and rock strength and quality along the drill hole in real time,thus making it possible to quickly determine the location of the buried underground space and reach the people in the underground space,with the result that the compressed air-flow can flow into the buried underground space through the holes in the bit of the hammer.It follows that the method can come into effective and practical use for emergent searching and rescuing people trapped in buried underground space.