AFFECTING FACTORS ON PERFORMANCE OF A DEVELOPED HOLE DIGGER
Yehia, I., Kabeel, M., Khalil, S. (2009). AFFECTING FACTORS ON PERFORMANCE OF A DEVELOPED HOLE DIGGER. EKB Journal Management System, 34(5), 5575-5591. doi: 10.21608/jssae.2009.93116
I. Yehia; M. H. Kabeel; S. K. Khalil. "AFFECTING FACTORS ON PERFORMANCE OF A DEVELOPED HOLE DIGGER". EKB Journal Management System, 34, 5, 2009, 5575-5591. doi: 10.21608/jssae.2009.93116
Yehia, I., Kabeel, M., Khalil, S. (2009). 'AFFECTING FACTORS ON PERFORMANCE OF A DEVELOPED HOLE DIGGER', EKB Journal Management System, 34(5), pp. 5575-5591. doi: 10.21608/jssae.2009.93116
Yehia, I., Kabeel, M., Khalil, S. AFFECTING FACTORS ON PERFORMANCE OF A DEVELOPED HOLE DIGGER. EKB Journal Management System, 2009; 34(5): 5575-5591. doi: 10.21608/jssae.2009.93116

AFFECTING FACTORS ON PERFORMANCE OF A DEVELOPED HOLE DIGGER

Journal of Soil Sciences and Agricultural Engineering
Article 7, Volume 34, Issue 5, May 2009, Page 5575-5591  XML PDF (1002.3 K)
Document Type: Original Article
DOI: 10.21608/jssae.2009.93116
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Authors
I. Yehia; M. H. Kabeel; S. K. Khalil
Ag. Eng. Res. Institute, ARC.
Abstract
The aim of this research was the studying of some factors affecting the development of a hole digger. The experiments were conducted in El Gemiza Research Station in Gharbia Governorate. Three auger diameters (150, 200 and  250  mm) of the developed hole-digger were tested at different auger–speeds (75, 100 and 150  rpm), auger pitches (10, 15 and 20 cm), hole–depths ( 20, 30 and 40 cm), hole–spacing (5 m) and soil type (clay) with moisture contents of 18, 22 and 26% and (bulk densities of 1.2, 1.1 and 1.05 g/cm3). 
The obtained results can be summarized as follows:
The maximum hole productivity was 324 hole/h obtained with auger speed of 150 rpm, hole diameter 15 cm, hole depth 20 cm, auger pitch 20 cm at moisture content 26%.  The penetration resistance of clay soil at 18 % moisture content increased by 35 and 45 % as compared with of clay soil at moisture content 22 % and 26 % respectively. The maximum fuel consumption was 0.69 L/h was obtained with auger speed of 150 rpm, hole diameter 25 cm, hole depth 40 cm, and auger pitch 10 cm.  The maximum power requirements (2.72 kW) was obtained with auger speed of 150 rpm, hole diameter 25 cm, hole depth 40 cm, auger pitch 10 cm and moisture content 18 %. The minimum operation cost was 0.05 L.E/hole at auger diameter 15 cm, auger pitch 15 cm and hole depth 20 cm. Whereas, the maximum operation cost was 0.23  L.E./hole  at auger diameter 25 cm, auger pitch 10 cm and hole depth 40 cm. The operational cost using a hole digger attached to a power tiller decreased by 500-950 % compared with manual digging.
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