Long-term study of mine pressure, according to his theory of strata movement, is to prevent the occurrence of major mine accidents such as roof caving, coal and gas outburst, rock burst and floor outburst. He combined scientific research with production practice, established and developed a "practical mine pressure theory system" to guide field production practice, which greatly reduced major accidents such as coal mine roof; On the basis of a large number of on-site observations, we have mastered a wealth of ground pressure behavior laws, developed methods and various instruments for predicting mine roof accidents, including the monitoring system for working conditions of comprehensive mechanized coal mining supports, and ensured high yield, high efficiency and safe production in coal mines. Go deep into the front line of coal mine production, establish and improve the theory and research method system of ground pressure centered on strata movement. This theoretical system has promoted the study of stope ground pressure in China from qualitative to quantitative, and promoted the development of mine site ground pressure and strata control from relying mainly on statistical experience decision-making to quantitative analysis for specific coal seam conditions in the past. The first mine pressure research institute of China University was established, which presided over and completed the research tasks of more than 20 topics such as the "Sixth Five-Year Plan" and "Seventh Five-Year Plan" national key scientific research projects. The successful development of monitoring methods such as "dynamic observation research method of underground strata" and roof dynamic instrument, as well as computer systems and software such as roof prediction and roof control design have realized the unity of theory and method. Academician Song Zhenqi correctly pointed out that "ground pressure" and its "appearance" are constantly developing and changing, and this change is regular and determined by the movement of rock strata. Therefore, the theory of ground pressure and its control should focus on the study of overlying strata movement, and put the core position on revealing the relationship between ground pressure and its appearance and overlying strata movement. Under the guidance of this academic thought, through field measurement, laboratory similar materials, computer simulation and theoretical analysis, the relationship between ground pressure and its appearance and overlying strata, as well as their development and change law with stope advancement, are deeply studied and revealed, and the theory of "two stress fields" is put forward through a lot of practice. This theory provides a theoretical basis for observing the development and change law of abutment pressure, predicting the movement of stope roof (weighting), inferring the distribution of abutment pressure, and correctly establishing the structural mechanical model of stope ground pressure control design. Instruments are the eyes of scientific and technological personnel. Based on long-term underground engineering practice, Song Zhenqi deeply realized that it is impossible to truly understand the movement law of rock strata without mine pressure instruments.

The first modern mine in China (Fangezhuang Mine in Kailuan) has observed the strata movement caused by working face mining for four years. It is of great academic and practical significance to sort out and analyze the 654.38 million+strata movement data and deeply study and explain the overlying strata movement and ground pressure law in the mining area, led by Song Zhenqi. He also led the graduates to study the roof movement and ground pressure law of two fully mechanized mining faces equipped with foreign and domestic fully mechanized mining equipment, and their comparison with general coal mining faces.

1976 after the first pair of mines in Yanzhou (Nantun Coal Mine) was put into production, there were many major accidents in which nearly 100 meters of working face collapsed. After nearly a hundred days and nights of hard struggle, Song Zhenqi led the students and comrades at the scene to finally find out the law of roof movement, the range of rock strata to be controlled and the control methods, and then eliminated the corresponding roof accidents.

In the late 1970s, China's mine pressure instruments were still blank, but there was no place to buy them. "If not, do it yourself!" Song Zhenqi is pregnant with "mobilizing millions of workers and peasants, and Qi Xin will work together!" With lofty aspirations, we mobilized a large number of teachers and graduate students majoring in physics, electromechanical and computer to form a joint research group, and worked day and night to develop CH-50 pressure joint, KY-82 rock stratum dynamometer, DCC- 1 telemeter, DK-II pillar quality monitor, SY-50 and SY-60 pillar dynamometer. Since the 1980s, he has presided over more than one major project 10, such as "roof prediction and control".

During the period of 1980, under the threat of hard roof, Songshuzhen Coal Mine in Tonghua adopted the "knife pillar" mining method, which caused strong mine pressure and a large amount of gas accumulation, resulting in a major gas accident with nearly 100 casualties. Through actual measurement and analysis, Song Zhenqi has found out the law of roof activity and corresponding parameters, and boldly adopted longwall caving method to control the roof, thus avoiding floor heave, bottom coal damage, gas emission and other strong ground pressure, and excluding the possibility of similar accidents in this mine.

During the period of 1984, the caving face of Yutianbao Mine in Nantong Mining Bureau was more than 3,000 meters long, which seriously threatened production. Tens of thousands of cubic meters of wood are used to control the roof every year, resulting in economic losses of millions of yuan. Song Zhenqi and the comrades of the Institute led the graduates to go deep into the field survey and study, changed the supporting methods and means, and eliminated the long-term roof accident and heavy economic burden.

In the mid-1980s, the instrument factory headed by Song Zhenqi produced nearly 75% of mine pressure instruments in China.

By the early 1990s, with the large-scale popularization of the support, the automatic monitoring of the working state of the support has become one of the signs of modern management in coal mines. Therefore, he led the instrument researchers to develop the working condition monitoring system of fully mechanized support, and promoted it in more than ten local mines.

199 1 year1month, in order to develop the theory of mining engineering discipline and the "systematic" and "creative" work applied to engineering practice.

By 1999, the industry of mine pressure instruments is still one of the economic pillars of mine pressure research institute, and mine pressure instruments have also made important contributions to the development of mine pressure theory. He has published 6 monographs and more than 0/00 papers/kloc. Awards:

First prize of national coal science and technology progress.

The State Education Commission awarded 1 the second prize for scientific and technological progress.

Second prize of national scientific and technological progress 10 and many other awards.