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本文测算了煤炭安全投入和经济效益变量,选择2000—2011年中国18家煤炭上市公司安全投入和经济效益的面板数据进行实证分析,验证了安全投入对经济效益的非线性影响。结果表明:1安全投入对经济效益存在滞后效应,但滞后1期和滞后2期的影响比当期小。2安全投入对经济效益存在单门限效应,在门限值两侧,安全投入对经济效益都具有正向推动作用,但是影响程度有所不同,在门限值右侧的推动作用要比门限值左侧的推动作用略大一些。3就目前煤矿安全投入而言,煤炭上市公司安全投入值还没有达到会对经济效益产生负向作用的临界值,一段时间内,仍可以通过增加煤矿安全投入,提升安全投入项目的整体价值,提高安全投入资金使用效率,保障煤矿生产的安全进行,进而正向推动企业经济效益。
This paper estimates the input of coal safety and economic benefit variables, selects the panel data of safety input and economic benefit of 18 Chinese listed coal companies from 2000 to 2011, and verifies the nonlinear effect of safety investment on economic benefits. The results show that: (1) There is a lagging effect on economic benefits from the safety input, but the impact of lagged 1 and lagged 2 is less than that of the current period. 2 The safety investment has single-threshold effect on economic benefits. On both sides of the threshold, the safety investment has a positive effect on economic benefits, but the degree of impact is different, and the promotion on the right side of the threshold is better than the threshold The left side of the value of the role of promoting slightly larger. 3 For the current coal mine safety investment, the safety investment value of coal listed companies has not reached the critical value that will have a negative effect on economic benefits. For a certain period of time, the overall value of safety investment projects can still be increased by increasing coal mine safety investment, Improve safety and efficiency of the use of funds invested to protect the safety of coal production, and then promote the positive economic efficiency of enterprises.