Tunnel footing anchor pouring reinforcement anti bottom expanding method and construction technique

• Main Authors: CAO SHENGGEN, LI GUOFU, HOU SHOUHUI, CHEN HONG, WU TAO, LU HAIFENG, GAO XIANGYANG, DAI TIEDING
• Format: Patent
• Language: Chinese; English
• Published: 19.08.2009
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

The invention discloses a method for controlling floor heave of a laneway, in particular to a method for resisting floor heave by bolting and grouting reinforcement of footing of the laneway and a construction technique thereof. In the method, anchor rods are arranged at footings at the two sides of the laneways and cement mortar is used for reinforcing the anchor rods, controllability of the two footings of the laneway is used to resist pressure of a base plate and pressure form two sides, so as to resist floor heave of the laneways. The method of the invention has the following beneficial effect: bolting and grouting reinforcement of grouted anchors at both footings of the laneway is carried out to resist the stress of both sides and the base plate so as to realize the effect of weakening the floor heave on the base plate; the structure for resisting floor heave by reinforcing footing bolting of the laneways is simple, the construction is convenient, the cost is low and the construction speed is rapid, thus