TUNNEL NATURAL GROUND SEARCH METHOD

PROBLEM TO BE SOLVED: To provide a tunnel natural ground search method for estimating a condition of a natural ground around a tunnel more accurately and efficiently.SOLUTION: A tunnel natural ground search method is for estimating a condition of a natural ground in front of a work face and a natural ground around a tunnel. The natural ground is drilled by a drilling machine 1. Drilled position data and mechanical data at least on a drilling energy value at a time of drilling work by the drilling machine 1 are acquired automatically using a drilling angle sensor 2 and a drilling data acquisition system provided on the drilling machine 1. The drilling position data and the mechanical data are used for estimating the condition of the ground.SELECTED DRAWING: Figure 1 【課題】より正確且つ効率的にトンネル周辺地山の状況を予測できるトンネル地山探査方法を提供する。【解決手段】切羽前方地山及びトンネル周辺地山の状況を予測するためのトンネル地山探査方法であって、穿孔掘削機１で地山を穿孔掘削するとともに、穿孔掘削機１に設けた穿孔角度センサー２と穿孔データ取得システムによって穿孔位置データと穿孔掘削機１の穿孔作業時の少なくとも穿孔エネルギー値の機械データを自動的に取得し、穿孔位置データと機械データを用いて地山の状況を予測するようにした。【選択図】図１