The invention relates to an automatic descent control device for a high-pressure gas
impact hypocenter. The automatic descent control device comprises an air pressure chamber, an
airflow valve, a guide pull rod, an air pressure chamber base, an air pressure chamber bottom cover, an
airflow circulation valve block, a valve block baffle and a fixing bracket; the upper end of the air pressure chamber is opened, and the air pressure chamber bottom cover is mounted at the lower end of the air pressure chamber and mounted on the fixing bracket through the air pressure chamber base; the
airflow valve is matched and connected in the air pressure chamber, the lower end of the airflow valve is fixedly connected with the guide pull rod, the lower end of the guide pull rod penetrates through a center hole of the air pressure chamber bottom cover and is connected with a
hypocenter hammer body, and the guide pull rod is in sealing connection with the center hole of the air pressure chamber bottom cover; and the airflow circulation valve block and the valve block baffle are mounted on the lower end surface of the airflow valve. By means of the automatic descent control device, the
time difference produced when the
hypocenter hammer body impacts the ground for the first time can be effectively prolonged, so that energy of elastic
waves produced when the hypocenter hammer body impacts the ground for the second time can be reduced, and the elastic
waves can be prevented from influencing effective recording; and rigid collision of the hypocenter hammer body can be effectively reduced, the fatigue of part materials can be reduced, and the service life of the hypocenter hammer body is prolonged.