Introduction of Ji Shen Expressway Project

Liaoning Caoshi (Liaoji Street)-Fushun (nanzamu) Expressway starts from Caoshi, Qingyuan County, Fushun City at the junction of Liaoning Province and Jilin Province, passes through Yin Ge Men Town, Qingyuan Town, Beisanjia Town, Nankouqian Town and Hongtoushan Town, and ends at the North Provincial Highway Railway Line (S202) in nanzamu Town, Xinbin County, Fushun City. nanzamu Hub Interchange is set here, which connects with Fushun (nanzamu)-Shenyang Expressway and Shenyang Expressway under construction.

Caoshi (Liaojijie)-Fushun (nanzamu) Expressway in Liaoning Province is an important section of Shenyang-Jilin connecting line of Hunchun-Wulanhaote Expressway in the national expressway network planning. Its completion will open up another fast lane for eastern Jilin and eastern Heilongjiang, and it will become an important inter-provincial traffic lane in the national highway network planning. Its construction is conducive to the formation of a large-scale, networked expressway network in Liaoning Province, the improvement of the national trunk network in our province, the strengthening of Liaoning's position as a transportation hub in Northeast China, the close economic exchanges within Northeast China, the important role of internal communication and external exchange, and the revitalization of the old industrial base in Northeast China. Strengthen the development of urban agglomerations in central and eastern Liaoning, and promote the development of regional natural and tourism resources and social and economic development. The starting point of this project is located at the junction of Liaoning Province and Jilin Province, 540 meters southeast of Friendship Bridge in Caoshi, National Highway G202. The original route plan has fully considered the future extension to Meihekou, Jilin Province, and has been agreed with the Jilin Provincial Communications Department.

The route passes through Dabanhe Village in the north of Liaoji Province, with main toll station (K 1+200 ~ K 1+460) and Caoshi service area (central station number: K1+600). Caoshi Interchange (K5+220) is located in the southwest of Caoshi after crossing Xiaobanhe Village in the north. The route is between Donggang Village and Changxing Village, passing through G202, south of Zhanniling Village, north of Dingjiajie Village, and crossing Yin Ge River in the upper reaches of Hunhe River. Cross Gushanzi Village South, Shimiaozi South and Yinggemen Town South, and set up Yinggemen Interchange (K24+246.044,19.026 km) in Changchun Tunnan; Stay away from Caoshi Interchange); Crossing the north of Mugou Village and the south of Changshanbao Village, Changshanbao Bridge is set up, which spans two national highways G202, two Yin Ge rivers in the upper reaches of Hunhe River and a special railway for military oil depots (bridge length from K30+750 to K32+5401790m); Qingyuan Interchange (K38+2 12.024, 13.966 km); From Yinggemen Interchange, it is located in Wayao Village North, Xiaoshancheng Village South, Gucheng Village North, Yaozhan Village North and Qingyuan County South. After crossing the inter-provincial Zhanghuan Line, the line crosses the Red River, passes through Douhutun and Zhongzhaizi Village to the south, and avoids the lime field in Douhutun Town. Zhongzhaizi Tunnel (left: K46+700 ~ K48+080, length1380m; ; Right YK46+635 ~ YK48+087.495, length1452.495m); Then two bridges (10-30m) will be erected in the south of Xiazhaizi and Gaojialazi Village to cross the Hunhe River. Shuanghe Village crosses south, crossing Hunhe River in parallel along the southern foothills of Hunhe River, Sanjia Town crosses Beijia Service Area in the south (central station number: K59+9 10), and Heishimucun Village crosses Hunhe River and Ji Shen Railway in the south (K62+682,10-40m); Go through the G202 line of Lingnan International Road (K65+732,392m), cross the military restricted zone north and Yaobao north, and set up the North Yaobao Interchange (K68+253.260,30.041km); Stay away from Qingyuan interchange); Crossing Shibadaoling Village, in the section of K68+600 ~ K69+820, in order to avoid excessive excavation on the right side, G202 National Road moves southward1253m; Crossing Shibadaoling Village and G202 line of off-road highway (the intersection angle at K7 1+789 is only 18 degrees, so the G202 national highway is moved to1230m for the convenience of bridge hole arrangement); K72+570 ~ K74+2 10 section, in order to avoid excessive excavation on the left side, G202 National Road moves northward 1645 meters; Cangshi North Hunhe Bridge will be built in CangShi Cun, which spans Hongtoushan Copper Mine, Hunhe River and its tributaries, and Ji Shen Railway (K75+602 ~ K76+922, length 1320m). The route passes through the south of Wangjiadagou, along Xiangwangdao, crosses Ji Shen Railway (K82+245,3-50m) for the third time, and ends at Tiechang Line of North Provincial Road, nanzamu Town, Xinbin County, Fushun City. nanzamu Hub Interchange (K83+66 1.284, 15.400) is set up.

The route crosses Shenji Railway 3 times, Hongtoushan Copper Mine local railway 1 time, military oil depot special railway 1 time, national highway G202 times, Hunhe River 7 times (including 3 times crossing Yin Ge River in the upper reaches of Hunhe River), parallel to 1.

* * * There are 5 interchanges along the line, namely Caoshi Interchange, Yingemen Interchange, Qingyuan Interchange, Beiyaobao Interchange and nanzamu Interchange.

* * There are/kloc-0 tunnels along the line, which are Zhongzhaizi tunnels (left width 1 .380m, right width1.452.495m); 2 extra-large bridges, namely Shanbao Hunhe Extra-large Bridge, with a length of 1790 m; Hunhe Bridge in Beicang Stone, length1320m. Rivers in this area are developed, mostly secondary and tertiary rivers.

Only the eastern Caoshi-Changxing section (K0 ~ K 10) is Baiyun River, which flows into Fuer River from west to east.

Groundwater occurrence condition

The line is located in the hilly area in the east of Fushun. The groundwater in the area is mainly quaternary loose rock pore water on the terrace of Hunhe River and its tributaries. Aquifers are stable and loose in structure, mostly distributed in sheets and strips with different thicknesses, which is a favorable area for storing groundwater. The Quaternary overburden in hilly area is thin, and bedrock is exposed in some areas, mainly including weathered cracks, structural cracks and joint fissure water, but the amount of water is not large.

Rivers and water bodies

Rivers in this area are relatively developed, mostly secondary and tertiary rivers. The secondary river is Hunhe River, which flows into Liaohe River from east to west. The third-class river is Baiyun River, which flows into Fuer River from west to east. The reservoirs near the design area mainly include Dongdaemun Reservoir, Dabanhe Reservoir, Xiaobanhe Reservoir, Shuangjinggou Reservoir, Dawopeng Reservoir, Liudafang Reservoir, Changxinggou Reservoir, Nandahu Reservoir and Honghe Power Station Reservoir, all of which are small reservoirs. 6. 1 engineering geological conditions

According to topography, landforms, geotechnical types, engineering geological characteristics and hydrogeological conditions, the design area can be divided into three engineering geological areas.

(1) exposed bedrock zoning in low mountains and hills

Widely distributed along the line, bedrock is exposed intermittently, and the lithology is mainly gneiss, migmatite, mixed granite, granulite, amphibole, sandstone and conglomerate. The rock mass is strongly weathered, joints and fissures are developed, and soft rocks such as mudstone, shale and clay rock are exposed locally, which are easy to disintegrate when meeting water, and the engineering geological characteristics are unstable. In addition, limestone is exposed from K45 to K50, and the structure in the karst cave development area is relatively developed. There are many faults with different scales and properties in the line, two of which are roughly parallel to the main line and longer than 10Km. The rocks in the belt are broken and the engineering geological conditions are poor.

(2) Subzone of alluvial-diluvial terrace dominated by gravel.

Widely distributed, continuous along the belt, mainly distributed between hills and valleys, on both sides of rivers. The main lithology is clay silt, gravel, medium-fine sand and gravel accumulated in the secondary terrace. The engineering geological conditions are good and suitable for road and bridge construction.

(3) Special soil engineering geological subregion

K5+500 ~ K6+600 and K7+800 ~ K8+700 (2km) have muddy clay (loam) with uneven thickness of 0.5 ~ 4.5m, and the organic matter content is 6. 1% ~ 12.7%, which is defined as peat.

K53+700 ~ K53+900 section is located in the piedmont slope, depression and gully mouth. The stratum in this section is mainly composed of clayey breccia, argillaceous clayey clay, clay, silty fine sand, medium sand, coarse sand, breccia and mixed granite (Mγ 1), and the engineering geological conditions are complex. Among them, the muddy clay has uneven properties and great thickness variation, containing 0.2 ~ 6.4% organic matter, and is in a fluid plastic state and a soft plastic state locally, belonging to soft soil foundation.

6.2 Geotechnical engineering geological types

Gravel soil: it is mainly distributed in the valleys on both sides of Hunhe River, and it is the Quaternary eluvial slope deposit. Including gravel and sand in river flood area, residual gravel soil at the foot of hillside slope, etc.

Clay: distributed in terraces and valleys on both sides of Hunhe River.

Limestone: distributed in Douhutun and Xiazhaizi in Qingyuan County, a mountainous area. It belongs to the pre-Sinian Wumishan Formation and can be produced and used by itself.

Sandstone: The Cretaceous Dayu Formation developed in this area contains a lot of conglomerate and sandstone. It is mainly distributed on the banks of Hunhe River between Qingyuan and Yinggemen.

Archaean granite gneiss: it is exposed in a large area in this area.

Metamorphic rocks, granulite and amphibole: mainly distributed in the area north of nanzamu-Qingyuan-Caoshi. There are sporadic outcrops in the granitic gneiss south of Hunhe River.

Volcanic rocks: The upper Jurassic Xiaoling Formation developed in the design area contains a large number of rhyolite and andesite, which are mainly distributed in nanzamu area. Quaternary lower Pleistocene basalts are mainly distributed in the south of Caoshi.

6.3 Engineering Geological Evaluation of Bridge Site

The landform units along the line are low mountains and hills, with developed water systems and valleys, and the route mostly passes through valleys and rivers. Therefore, there are many bridges across ditches and rivers and bridges across other roads and buildings, and the geological conditions of each proposed location are complex.

The eastern hilly area is relatively flat and flat along the line. The overlying lithology is mainly gravel formed by river alluvial and diluvial deposits, with uneven water abundance, great thickness variation and unstable and loose soil quality.

The alluvial and diluvial terraces and II-level accumulation terraces in the hilly areas of the central and western regions are mainly clayey silty gravel and gravel layers formed by accumulation, which still belong to unstable loose soil. Fault structures are developed in the area, but there are few crossing lines, which has little influence on bridge construction.

The underlying bedrock of each bridge site is mostly hard rock, with soft rock and extremely soft rock, such as peat, distributed locally. Shale is rarely distributed and suitable for bridge construction.

6.4 tunnel engineering geological evaluation

This project has a tunnel, Zhongzhaizi Tunnel, with a length of 1380 (left)/1452.495 m (right). The tunnel is located in hilly landform area, with developed vegetation and loose residual slope deposits along the slope. The surrounding rock of the tunnel is mainly hard layered rock mass, followed by massive rock mass, with undeveloped regional structure and basically good engineering geological conditions.

To sum up, the site landform of Fushun Caoshi (Liaoning boundary)-nanzamu Expressway can be divided into three landform units: erosion and erosion of low mountains and hills, alluvial valley landform and erosion and accumulation landform (secondary pedestal terrace). The terrain is high in the east and low in the west. The engineering geological conditions of the site are good, and only bad engineering geological phenomena such as soft soil, peat soil, karst caves and fault zones appear, which is suitable for bridge construction.

The engineering geological conditions of the line site are simple, and the main aquifer is pore phreatic water in the Quaternary unconsolidated layer, with small local pressure, and the groundwater is not corrosive to concrete. In the regional seismic zoning, Fushun belongs to the east survey of the Tan-Lu fault zone in the North China seismic belt, bordering on the Chifeng-Kaiyuan fault zone in the north and the Northeast seismic belt in the north. Since the establishment of 1969 Fushun Seismic Station, * * * has recorded more than 100 small earthquakes, most of which are distributed near both sides of Fushun-Shenyang and Hunhe fault zones. Historically, Dadongzhou in Fushun County experienced an earthquake with a seismic intensity of ⅴ-ⅵ in 1496, and an earthquake with a magnitude of 1.6 (Ms) occurred before1August 20, 985 in qingyuan county. In the 1975 Haicheng earthquake, the influence intensity of Fushun was ⅵ. Although there has never been a strong destructive earthquake in Fushun in history, this area has a geological structure background of moderate and strong earthquakes.

According to the regional seismic risk analysis, the Hunhe fault zone is a potential earthquake source area of magnitude 6 or so, and the earthquake disasters in this area mainly come from the influence of strong earthquakes in and around the earthquake zone. The basic earthquake intensity is ⅵ, and there are frequent small earthquakes and frequent earthquakes on the Hunhe fault zone.

According to China people's * * design area and national standard GB 50011-2001Code for Seismic Design of Buildings, the basic peak acceleration of the earthquake designed within the scope of this project is 0.05g, which is equivalent to the seismic intensity of 6 degrees. I like chips. This project * * * divides nine contract sections into serial number, contract section number, pile number and mileage range. The winning bidder is 1. The first contract section K0+000-K 15+800. Daqing oilfield road and bridge engineering co., ltd. Second contract section K 15+800-K29+000. Changsha Zhongnan Construction Engineering Group Corporation of Nuclear Industry. The third contract section K29+ 000-K34+000 China Railway 13th Bureau Group Corporation 4 the fourth contract section K34+000-K46+000 China Water Resources and Hydropower First Engineering Bureau 5 the fifth contract section K46+000-K52+400 China Railway 15th Bureau Group Fifth Engineering Co., Ltd. 6 the sixth contract section K52+400-K62+400 Liaoning Road and Bridge Construction.