The main purpose of the field survey works is to develop a survey map of the area, preparation of meteorological datasheet, identify the hydrological and hydraulic condition of the river at proposed bridge sites, investigate probable seismic hazard of the proposed bridge and geotechnical investigation of 35# -39# Bridges and 1016.5m Subgrade is to investigate the subsurface geological conditions, presence of groundwater, the thickness of rock bands, depth of overburden, etc. The geotechnical investigation for the 35# - 39# bridge, the height of 72m from the riverbed, comprises of Soil Investigation of 30 Boreholes. The geotechnical investigation for 1016.5m of subgrade (road slope) comprises of Soil Investigation of 35 Boreholes. The maximum depth of drilling for slope analysis is 77 m.
Description of Actual Services Provided in the Assignment:
A. Seismic Hazard Assessment of Bridge and Project Area
B. 2 Nos of Microtremor Array Measurement (MAM) for shear wave velocity at tunnel up to 400m depth
Geotechnical Investigation (drilling works and laboratory tests) is to investigate the subsurface geological conditions, water pressure (Lugeon Test for permeability), presence of groundwater, the thickness of rock bands, depth of overburden, etc.

China Poly Group Corporation Ltd. is a large-scale central state-owned enterprise under the supervision and management of the State-owned Assets Supervision and Administration Commission of the State Council (SASAC). Upon the approval of the State Council and the Central Military Commission of the P.R.C., the Group was founded in February 1992. Over the past three decades, Poly Group has established a development pattern with main business in multiple fields, including international trade, real estate development, light industry R&D and engineering services, arts and crafts raw materials & products management services, culture and art business, civilian explosive materials and blasting service and financial services. Its business covers over 100 countries worldwide and over 100 cities in China.
In 2018, Poly Group's operating revenue exceeded RMB 300 billion yuan and total profit RMB 40 billion yuan. By the end of 2018, the group's total assets exceeded one trillion yuan, ranking 312th among the Fortune 500.
At present, Poly Group has 11 secondary subsidiaries and 6 listed holding companies. Poly Developments and Holdings Group Co., Ltd. (SH 600048), Poly Property Group Co., Ltd. (HK 00119), Poly Culture Group Co., Ltd. (HK 03636), Guizhou Jiulian Industrial Explosive Materials Development Co., Ltd. (SZ 002037), China Haisum Engineering Co. Ltd. (SZ 002116), Poly Property Services Co., Ltd.(H.K.06049).

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