Standard No.:	DL/T 5050-2000
English Name:	Code of Exploratory Adits Shafts and Trenches for Water Resources and Hydropower Project
Chinese Name:	水利水电工程坑探规程
Professional Classification:	DL    Professional Standard - Electricity
Source Content Issued by:	SETC
Implemented on:	2001-1-1
Status:	superseded
Superseded by:	DL/T 5050-2010 Code of exploratory adits shafts and trenches for hydropower and water resources
Superseded on:	2010-12-15
Target Language:	English
File Format:	PDF
Word Count:	22000 words
Translation Price(USD):	550.0
Delivery:	via email in 1 business day

This code specifies the technical requirements and construction quality of the exploratory adits, shafts and trenches for water resources and hydropower project, and it is applicable to the exploratory shafts, shallow shafts, exploratory trenches, adits, inclined shafts, vertical shafts and adits at river bed in the geologic examination of water resources and hydropower project.

Foreword I 1 Scope 2 Normative References 3 General Provisions 4 Mission Assignment and Construction Preparation 5 Quality of Tunnel Exploration Engineering 6 Basic Provisions on Safety Technology 7 Exploratory Adits, Shallow Shafts and Exploratory Trenches 8 Adits 9 Inclined Shaft, Vertical Shaft and Open Caisson 10 Adits at River Bottom 11 Mechanical Operation and Maintenance of Exploratory Adits, Shafts and Trenches Annex A (Informative) Transporting Power of Different Distances and Different Linear Diameters Annex B (Informative) Characteristics of Rock Drill Annex C (Informative) Pressure Loss of Air Pipe Annex D (Informative) Consumption of Explosives for per Cubic Meter of Solid Rock of Different Classes Annex E (Informative) Conversion of the Consumption of Different Explosives Annex F (Informative) Characteristics of Explosives Annex G (Informative) Explosive Load of Periphery Holes per Meter for Smooth Blasting