In July, the fire city of Zhengzhou is already in full swing, and the high temperature is constantly going on. The shield construction site of the subway line 10, the huge shield machine is like a smashing, the light rotation is not going forward, the soil that is pulled out is a car and another car. According to experience, this is not a good sign. It may cause the ground to collapse and the nose will deviate from the normal forward trajectory. The site headquarters immediately organized relevant technical personnel, and together with the construction team and equipment supplier representatives, formed an emergency command. Our company sent Zhang Haiqing, an experienced teacher, to the scene for the first time. After understanding the actual status of the site, the general manager of the company told the on-site personnel based on years of on-site experience to propose our grouting plan. The company personnel at the scene actively cooperated with the construction team to operate the equipment, constantly changing the use mode of the grouting pump, and a tight and orderly underground and underground battle, quietly proceeding. Workers taking turns to rest, staring at the instrument with bloodshot eyes, strictly watching the grouting pressure, after 48 hours of continuous operation, through the shield hole in the shield machine, the flow consolidation in front of the machine head was successful, the surface exploration hole The inspection also met the requirements, and a rescue operation was perfectly finished. The company's dual slurry grouting injection pumpand field service experience beyond the scope of equipment were unanimously affirmed by the engineering headquarters.
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