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陕西煤田地质公司对1989年与1990年上半年已评级的124个钻孔进行复查后有12％的钻孔降了级,引起了公司的重视。分析原因有:①采用的煤厚或重量采取率计算数据不准,复查后计算的采取率降低;②质量不好但属应验收的煤层未参加验收;③原始记录不全、重抄、涂改或用铅笔填写;④未完成设计采样任务等。复查还发现;验收时只重视煤层、孔斜,对其他项目要求不严;当设计要求的质量标准高于部颁标准时,不按设计标准验收。特别是钻探与测井资料不符时,不能合理取值等等。钻孔评级与奖金挂钩,复查后降级的钻孔是否扣回奖金,甲级孔是否发奖金,做法也不一致。
Shaanxi Coalfield Geology Company re-examined 124 boreholes that had been rated in 1989 and the first half of 1990, and 12% of boreholes were downgraded, which aroused the company’s attention. The reasons for the analysis are as follows: 1 The adopted coal thickness or weight calculation rate calculation data is inaccurate, and the calculation rate adopted after the review is reduced; 2 The coal seam with poor quality but acceptable acceptance has not participated in the acceptance; 3 The original records are incomplete, reprinted, altered, or Fill in the pencil; 4 did not complete the design sampling task. The review also found that only acceptance of coal seams and hole deflection was required during inspection and acceptance, and other projects were not strictly required; when the quality standards for design requirements were higher than the ministerial standards, they were not accepted according to design standards. In particular, when drilling and logging data do not match, reasonable values cannot be obtained. The rating of the drill hole is tied to the bonus. Whether the hole drilled after degrading is deducted from the bonus and whether the class A hole is awarded bonus is not consistent.